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CN118054426B - Reactive power compensation device and energy storage coordination optimization configuration method and system - Google Patents

Reactive power compensation device and energy storage coordination optimization configuration method and system Download PDF

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Publication number
CN118054426B
CN118054426B CN202410311159.9A CN202410311159A CN118054426B CN 118054426 B CN118054426 B CN 118054426B CN 202410311159 A CN202410311159 A CN 202410311159A CN 118054426 B CN118054426 B CN 118054426B
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transformer substation
compensation device
reactive power
energy storage
substation
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CN118054426A (en
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张小元
殷实
张苏川
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Jiangsu Nengcheng Electric Co ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for AC mains or AC distribution networks
    • H02J3/18Arrangements for adjusting, eliminating or compensating reactive power in networks
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06QINFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for AC mains or AC distribution networks
    • H02J3/28Arrangements for balancing of the load in a network by storage of energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
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    • Y02E40/00Technologies for an efficient electrical power generation, transmission or distribution
    • Y02E40/30Reactive power compensation

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Abstract

The invention discloses a reactive power compensation device and energy storage coordination optimization configuration method and system, and relates to the technical field of electric power coordination, wherein the method comprises the following steps: the method comprises the steps of step one, substation information acquisition, step two, substation information analysis, step three, substation adding energy storage equipment analysis, step four, adding energy storage equipment test operation, step five, substation operation and maintenance analysis after substation adjustment and step six, and substation adjustment post-treatment.

Description

Reactive power compensation device and energy storage coordination optimization configuration method and system
Technical Field
The invention relates to the technical field of electric power coordination, in particular to a reactive power compensation device and energy storage coordination optimization configuration method and system.
Background
With the continuous development of power systems, the scale of a transformer substation is increasingly enlarged, the rapid growth of power load and the large-scale access of new energy source are faced with serious challenges for the stability and reliability of the transformer substation. The management of reactive power becomes one of the key factors to ensure stable operation of the power system. The reactive compensation device and the energy storage system are taken as two important components of the power system of the transformer substation, and the coordinated optimization configuration of the reactive compensation device and the energy storage system has important significance for guaranteeing the stable operation of the power grid, so that the coordinated optimization of the reactive compensation device and the energy storage equipment of the transformer substation is extremely important.
In the prior art, the coordination optimization of the reactive compensation device of the transformer substation and the energy storage equipment can meet the current requirements to a certain extent, but certain defects exist, and the coordination optimization is embodied in the following layers: (1) The working efficiency of the reactive power compensation device of the transformer substation is not high in the prior art, if the working efficiency of the reactive power compensation device of the transformer substation cannot meet the requirement of stable operation of the transformer substation, energy storage equipment construction can be conducted on the transformer substation, reactive power adjustment is conducted on the transformer substation, reactive power of the transformer substation is reduced, stable operation of the transformer substation is guaranteed, the reactive power adjustment of the transformer substation is unsuitable due to neglect of the layer in the prior art, stable operation of the transformer substation is affected, quality of power transmission and transmission of the transformer substation is not guaranteed, and therefore electricity quality of a user side of the transformer substation is difficult to guarantee.
(2) In the prior art, the analysis strength of the node suitable for layout of the energy storage equipment of the transformer substation is not deep enough, the operation efficiency value of each node of the transformer substation influences the selection of the node suitable for layout of the energy storage equipment to a certain extent, if the operation efficiency value of the node is lower, the layout requirement of the energy storage equipment at the node is higher, the suitability of the node suitable for layout of the energy storage equipment of the transformer substation is difficult to guarantee due to the neglect of the node in the prior art, the operation efficiency of each node of the transformer substation is difficult to guarantee, and the stability of a power grid system of the transformer substation is adversely affected.
Disclosure of Invention
The invention aims to provide a coordinated and optimized configuration method and system for reactive power compensation and energy storage, which solve the problems in the background technology.
In order to solve the technical problems, the invention adopts the following technical scheme: the first aspect of the invention provides a coordinated and optimized configuration method for reactive power compensation device and energy storage, comprising the following steps: step one, substation information acquisition: the method comprises the steps of obtaining historical operation information of a reactive power compensation device of a transformer substation from a transformer substation operation background, wherein the historical operation information comprises switching states and time points of each operation, and obtaining total assembly capacity of the transformer substation, operation and maintenance data before each operation and maintenance data after each operation of the reactive power compensation device from the transformer substation operation background, wherein the operation and maintenance data comprises voltage, current and reactive power of each node corresponding to each detection time point.
Step two, substation information analysis: and (3) analyzing the working efficiency evaluation index of the reactive power compensation device of the transformer substation, judging whether the reactive power adjustment of the transformer substation meets the standard, and executing the third step if the reactive power adjustment does not meet the standard.
Step three, analyzing energy storage equipment added to the transformer substation: and analyzing the proper layout quantity of the energy storage devices of the transformer substation, and analyzing the layout points of the energy storage devices of the transformer substation.
Step four, adding energy storage equipment for test operation: energy storage equipment is distributed at each energy storage equipment distribution point of the transformer substation, test operation is carried out on the transformer substation, and further operation and maintenance data of the transformer substation in the test operation and working state types corresponding to the energy storage equipment are obtained from a transformer substation operation background, wherein the working state types comprise absorption, release and silence.
Step five, operation and maintenance analysis after transformer substation adjustment: and acquiring operation and maintenance data of the transformer substation after adjustment from the operation background of the transformer substation, and further analyzing the effect evaluation coefficient of the adjustment strategy of the transformer substation.
Step six, substation adjustment post-treatment: and if the effect of the adjustment strategy of the transformer substation does not reach the standard, sending each energy storage equipment layout point of the transformer substation to an electric power reactive compensation expert, and re-layout each energy storage equipment layout point of the transformer substation.
Preferably, the working efficiency evaluation index of the reactive power compensation device of the analysis substation is specifically analyzed by the following steps: based on the capacity of a general assembly machine of the transformer substation and operation and maintenance data of the reactive power compensation device before each operation, the casting shear suitable value epsilon i of the reactive power compensation device of the transformer substation in each operation is analyzed, wherein i is the number of each operation, i=1, 2, n, n is any integer greater than 2, and the maximum casting shear suitable value epsilon max and the minimum casting shear suitable value epsilon min of the reactive power compensation device of the transformer substation are screened according to the casting shear suitable value epsilon i.
And analyzing the operation efficiency value eta of the reactive power compensation device of the transformer substation based on the capacity of the general assembly machine of the transformer substation, the operation and maintenance data before each operation and the operation and maintenance data after each operation of the reactive power compensation device.
Screening each proper operation of the reactive power compensation device of the transformer substation, counting the proper operation times M and the total operation times M' of the reactive power compensation device of the transformer substation, and comprehensively analyzing the working efficiency evaluation index of the reactive power compensation device of the transformer substationWherein lambda 1、λ2、λ3、λ4 is a weight influence factor corresponding to predefined proper value fluctuation of the shear conversion, proper value of the shear conversion, proper operation times and operation efficiency value respectively.
Preferably, the method for analyzing the shear suitable value epsilon i of the reactive power compensation device of the transformer substation in each operation specifically includes the following steps: and screening the scale grade of the transformer substation based on the capacity of the total assembly machine of the transformer substation and combining the capacity interval of the total assembly machine corresponding to each scale grade stored in the web database.
Extracting voltage U imj, current and reactive power of each node corresponding to each detection time point from operation and maintenance data of the transformer substation before each operation of the reactive compensation device, extracting rated voltage U', suitable current interval and suitable reactive power interval of the transformer substation from a web database, wherein m is the number of each detection time point, m=1, 2, i, l is any integer greater than 2, j is the number of each node, j=1, 2, i, k, k is any integer greater than 2, analyzing a current operation quality evaluation index B imj and a reactive power quality evaluation index D imj of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device, and further integrating the operation quality evaluation index of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation deviceAnd carrying out mean value processing on the reactive compensation device to obtain the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device.
Based on the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device, the average speed of the transformer substation at each detection time point before each operation of the reactive compensation device is analyzed, and compared with the average speed threshold value of the predefined reactive compensation value suitable operation, if the average speed of the transformer substation at a certain detection time point before a certain operation of the reactive compensation device is larger than or equal to the average speed threshold value of the reactive compensation value suitable operation, the detection time point is marked as the suitable time point of the reactive compensation device of the transformer substation at the time, and the suitable time point of the reactive compensation device of the transformer substation for each operation of the transformer substation is obtained.
The method comprises the steps of analyzing the proper switching state of each operation of a reactive power compensation device of a transformer substation, analyzing the proper switching state TQ i of the reactive power compensation device of the transformer substation in each operation based on the switching state and the proper switching state of the reactive power compensation device of the transformer substation in each operation, and comprehensively analyzing the proper switching value of the reactive power compensation device of the transformer substation in each operation by combining the time point TI i and the proper time point TI i' of the reactive power compensation device of the transformer substation in each operationWherein TI' is the allowable error time length of the predefined reactive compensation device corresponding to the switching variation.
Preferably, the method for analyzing the appropriate switching state of the transformer substation before each operation of the reactive compensation device specifically includes: analyzing operation quality evaluation indexes of the transformer substation at each detection time point before each operation of the reactive compensation deviceAnd constructing an operation quality evaluation index change curve graph of the transformer substation before each operation of the reactive compensation device according to the operation quality evaluation index change curve, obtaining the area S i of the operation quality evaluation index change curve of the transformer substation before each operation of the reactive compensation device, and further analyzing the proper switching state of the transformer substation before each operation of the reactive compensation deviceWherein the method comprises the steps ofThe state of the input is indicated,And the cut-off states are respectively the area threshold value of the running quality evaluation index change curve corresponding to the input state of the reactive power compensation device of the predefined transformer substation and the area threshold value of the running quality evaluation index change curve corresponding to the cut-off state.
Preferably, the operation efficiency value eta of the reactive power compensation device of the analysis substation is as follows: and extracting the voltage, current and reactive power of each node corresponding to each detection time point from the operation data of the reactive power compensation device of the transformer substation after each operation.
Operation quality evaluation indexes of corresponding nodes of each detection time point of the same transformer substation before each operation of the reactive power compensation deviceThe analysis method of the system is consistent, and the operation quality evaluation index theta ihj of each detection time point of the transformer substation after each operation of the reactive compensation device corresponds to each node is analyzed, wherein h is the number of each detection time point after the operation, h=1, 2, & gt, g is any integer greater than 2.
Analyzing operation efficiency values of all nodes of transformer substationAnd carrying out mean value processing on the reactive power compensation device to obtain an operation efficiency value eta of the reactive power compensation device of the transformer substation, wherein g is the number of detection time points after operation, and l is the number of detection time points before operation.
Preferably, the analyzing method is that: comparing the operation efficiency value of the reactive compensation device of the transformer substation with the operation efficiency value interval of the reactive compensation device corresponding to each proper layout quantity of the energy storage equipment of the transformer substation stored in the web database, and screening the proper layout quantity of the energy storage equipment of the transformer substation.
Preferably, each energy storage device of the analysis substation is provided with a point, and the specific analysis method comprises the following steps: based on the operation efficiency values of all the nodes of the transformer substation, sequencing all the nodes of the transformer substation according to the order from small to large of the operation efficiency values to obtain the sequenced all the nodes of the transformer substation, selecting all the nodes corresponding to the proper layout quantity of the energy storage devices of the transformer substation from top to bottom, and taking the nodes as the layout points of all the energy storage devices of the transformer substation.
Preferably, the effect evaluation coefficient of the adjustment strategy of the analysis substation is specifically analyzed by the following steps: and acquiring voltage, current and reactive power of each node corresponding to each detection time point from operation and maintenance data of the substation in test operation from a substation operation background.
The method is consistent with an analysis method of the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device, and the operation quality evaluation index delta f of the transformer substation at each detection time point of the test operation is obtained through analysis, wherein f is the number of each detection time point of the test operation, f=1, 2, and t are any integers which are larger than 2, so that the comprehensive operation quality evaluation index of the transformer substation in the test operation is synthesizedWhere t is the number of test run detection time points.
And (3) the comprehensive operation quality evaluation index of the transformer substation in test operation and the comprehensive operation quality evaluation index range of the energy storage equipment stored in the web database corresponding to each working state type are selected, so that the proper working state type of the energy storage equipment of the transformer substation is screened.
And extracting the voltage, the current and the reactive power of each node corresponding to each detection time point from the adjusted operation and maintenance data of the transformer substation, and analyzing to obtain an adjusted comprehensive operation quality evaluation index psi of the transformer substation, wherein the voltage, the current and the reactive power are consistent with an analysis method of the comprehensive operation quality evaluation index of the transformer substation in test operation.
Based on the working state type corresponding to each energy storage device of the transformer substation, analyzing an I-shaped compliance value F b of the energy storage device of the transformer substation, b is the number of each energy storage device, b=1, 2, d is any integer greater than 2, and analyzing an effect evaluation coefficient of an adjustment strategy of the transformer substation
Preferably, the method for analyzing the engineering compliance value of the energy storage device of the transformer substation specifically includes: comparing the working state type corresponding to each energy storage device of the transformer substation with the proper working state type, if the working state type corresponding to one energy storage device of the transformer substation is successfully matched with the proper working state type, marking the working state compliance value of the energy storage device as H, otherwise marking the working state compliance value as H ', further counting to obtain the working state compliance value F b of each energy storage device of the transformer substation, wherein F b =H or H', and carrying out mean value processing on the working state compliance value F b to obtain the working state compliance value of the energy storage device of the transformer substation.
A second aspect of the present invention provides a coordinated optimization configuration system for executing the coordinated optimization configuration method of the reactive compensation device and the energy storage according to any one of the present invention, including: the transformer substation information acquisition module is used for acquiring historical operation information of the reactive power compensation device of the transformer substation from a transformer substation operation background, wherein the historical operation information comprises switching states and time points of each operation, and acquiring total assembly capacity of the transformer substation, operation and maintenance data before each operation and maintenance data after each operation of the reactive power compensation device from the transformer substation operation background, wherein the operation and maintenance data comprises voltage, current and reactive power of each node corresponding to each detection time point.
And the substation information analysis module is used for analyzing the working efficiency evaluation index of the reactive power compensation device of the substation, judging whether the reactive power adjustment of the substation meets the standard or not, and executing the third step if the reactive power adjustment does not meet the standard.
The transformer substation is added with an energy storage device analysis module which is used for analyzing the proper layout quantity of the energy storage devices of the transformer substation and analyzing the layout points of the energy storage devices of the transformer substation.
And adding an energy storage equipment commissioning module for distributing energy storage equipment at each energy storage equipment distribution point of the transformer substation, and performing commissioning on the transformer substation, so as to obtain operation and maintenance data of the transformer substation in the commissioning and the corresponding working state types of each energy storage equipment from a transformer substation operation background, wherein the working state types comprise absorption, release and silence.
The operation and maintenance analysis module is used for acquiring operation and maintenance data of the transformer substation after adjustment from the operation background of the transformer substation, and further analyzing the effect evaluation coefficient of the adjustment strategy of the transformer substation.
And the substation adjustment post-processing module is used for sending each energy storage equipment layout point of the substation to an electric reactive compensation expert if the effect of the adjustment strategy of the substation does not reach the standard, and re-layout each energy storage equipment layout point of the substation.
The invention has the beneficial effects that: (1) According to the method, the historical operation information of the reactive power compensation device of the transformer substation, the operation and maintenance data of the transformer substation before each operation and the operation and maintenance data after each operation are obtained in the first step, so that a foundation is laid for analysis of the reactive power compensation device of the subsequent transformer substation.
(2) In the second step, the invention analyzes the switching-over shear of the reactive compensation device of the transformer substation through the switching state and the switching time point of the reactive compensation device of the transformer substation, and analyzes the operation efficiency value of the reactive compensation device of the transformer substation through the capacity of the general assembly machine of the transformer substation, the operation data before each operation and the operation data after each operation of the reactive compensation device, thereby analyzing the working efficiency evaluation index of the reactive compensation device of the transformer substation, overcoming the defect of low attention on the aspect in the prior art, improving the suitability of the regulation of the reactive power of the transformer substation, ensuring the stable operation of the transformer substation, improving the quality of the power transmission and the power transmission of the transformer substation, and further ensuring the electricity utilization quality of the user side of the transformer substation.
(3) According to the method, in the step three, the arrangement points of the energy storage devices of the transformer substation are analyzed through the operation efficiency values of the nodes of the transformer substation, so that the defect that in the prior art, the analysis strength of the energy storage devices of the transformer substation is not deep enough is overcome, the suitability of the energy storage devices of the transformer substation for arranging the nodes is ensured, the operation efficiency of the nodes of the transformer substation is improved, and the adverse effect on the stability of a power grid system of the transformer substation is reduced.
(4) In the fourth step, the energy storage equipment is distributed at each energy storage equipment distribution point of the transformer substation, the transformer substation is subjected to test operation, and data support is provided for operation and maintenance analysis after adjustment of the subsequent transformer substation.
(5) In the fifth step, the effect evaluation coefficient of the adjustment strategy of the transformer substation is comprehensively analyzed through the operation and maintenance data of the transformer substation in test operation, the adjusted operation and maintenance data and the working state types of the energy storage devices, so that the adjusted operation efficiency of the transformer substation is ensured, and the operation risk of the transformer substation in direct use is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a schematic diagram of the system structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a first aspect of the present invention provides a coordinated optimization configuration method for a reactive compensation device and energy storage, including: step one, substation information acquisition: the method comprises the steps of obtaining historical operation information of a reactive power compensation device of a transformer substation from a transformer substation operation background, wherein the historical operation information comprises switching states and time points of each operation, and obtaining total assembly capacity of the transformer substation, operation and maintenance data before each operation and maintenance data after each operation of the reactive power compensation device from the transformer substation operation background, wherein the operation and maintenance data comprises voltage, current and reactive power of each node corresponding to each detection time point.
According to the method, the historical operation information of the reactive power compensation device of the transformer substation, the operation and maintenance data of the transformer substation before each operation and the operation and maintenance data after each operation are obtained in the first step, so that a foundation is laid for analysis of the reactive power compensation device of the subsequent transformer substation.
Step two, substation information analysis: and (3) analyzing the working efficiency evaluation index of the reactive power compensation device of the transformer substation, judging whether the reactive power adjustment of the transformer substation meets the standard, and executing the third step if the reactive power adjustment does not meet the standard.
In a specific embodiment of the present invention, the method for analyzing the working efficiency evaluation index of the reactive power compensation device of the transformer substation specifically includes: based on the capacity of a general assembly machine of the transformer substation and operation and maintenance data of the reactive power compensation device before each operation, the casting shear suitable value epsilon i of the reactive power compensation device of the transformer substation in each operation is analyzed, wherein i is the number of each operation, i=1, 2, n, n is any integer greater than 2, and the maximum casting shear suitable value epsilon max and the minimum casting shear suitable value epsilon min of the reactive power compensation device of the transformer substation are screened according to the casting shear suitable value epsilon i.
And analyzing the operation efficiency value eta of the reactive power compensation device of the transformer substation based on the capacity of the general assembly machine of the transformer substation, the operation and maintenance data before each operation and the operation and maintenance data after each operation of the reactive power compensation device.
Screening each proper operation of the reactive power compensation device of the transformer substation, counting the proper operation times M and the total operation times M' of the reactive power compensation device of the transformer substation, and comprehensively analyzing the working efficiency evaluation index of the reactive power compensation device of the transformer substationWherein lambda 1、λ2、λ3、λ4 is a weight influence factor corresponding to predefined proper value fluctuation of the shear conversion, proper value of the shear conversion, proper operation times and operation efficiency value respectively.
The reactive power compensation device of the screening transformer substation is suitable for running each time, and the specific screening method comprises the following steps: comparing the proper value of the reactive compensation device of the transformer substation in the casting shear of each operation with a predefined proper threshold value of the casting shear, if the proper value of the reactive compensation device of the transformer substation in the casting shear of each operation is larger than or equal to the proper threshold value of the casting shear, recording the operation as proper operation, and further counting to obtain each proper operation of the reactive compensation device of the transformer substation.
It should be further noted that the range of values of λ 1、λ2、λ3、λ4 is 0 to 1.
In a specific embodiment of the invention, the method for analyzing the shear suitable value epsilon i of the reactive power compensation device of the transformer substation in each operation specifically comprises the following steps: and screening the scale grade of the transformer substation based on the capacity of the total assembly machine of the transformer substation and combining the capacity interval of the total assembly machine corresponding to each scale grade stored in the web database.
Extracting voltage U imj, current and reactive power of each node corresponding to each detection time point from operation and maintenance data of the transformer substation before each operation of the reactive compensation device, extracting rated voltage U', suitable current interval and suitable reactive power interval of the transformer substation from a web database, wherein m is the number of each detection time point, m=1, 2, i, l is any integer greater than 2, j is the number of each node, j=1, 2, i, k, k is any integer greater than 2, analyzing a current operation quality evaluation index B imj and a reactive power quality evaluation index D imj of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device, and further integrating the operation quality evaluation index of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation deviceAnd carrying out mean value processing on the reactive compensation device to obtain the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device.
It should be noted that, each detection time point of the transformer substation before each operation of the reactive compensation device corresponds to the current operation quality evaluation index B imj of each node, and the specific analysis method thereof is as follows: comparing the current of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device with an appropriate current interval, if the current of each node corresponding to a detection time point of the transformer substation before a certain operation of the reactive compensation device is in the appropriate current interval, marking the current operation quality evaluation index of each node corresponding to the detection time point of the transformer substation before the certain operation of the reactive compensation device as alpha, otherwise marking the current operation quality evaluation index as alpha ', and counting the current operation quality evaluation index B imj of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device, wherein B imj = alpha or alpha'.
It should also be noted that, the reactive power quality evaluation index D imj of each node corresponding to each detection time point of the transformer substation before each operation of the reactive power compensation device, the specific analysis method is as follows: comparing the reactive power of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device with a proper reactive power interval, if the reactive power of a certain node corresponding to a certain detection time point of the transformer substation before a certain operation of the reactive compensation device is in the proper reactive power interval, marking the reactive power quality evaluation index of the corresponding node of the transformer substation before the certain operation of the reactive compensation device at the detection time point as beta, otherwise marking the reactive power quality evaluation index as beta ', and counting the reactive power quality evaluation index D imj of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device, wherein D imj =beta or beta'.
Based on the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device, the average speed of the transformer substation at each detection time point before each operation of the reactive compensation device is analyzed, and compared with the average speed threshold value of the predefined reactive compensation value suitable operation, if the average speed of the transformer substation at a certain detection time point before a certain operation of the reactive compensation device is larger than or equal to the average speed threshold value of the reactive compensation value suitable operation, the detection time point is marked as the suitable time point of the reactive compensation device of the transformer substation at the time, and the suitable time point of the reactive compensation device of the transformer substation for each operation of the transformer substation is obtained.
The average speed of the analysis transformer substation at each detection time point before each operation of the reactive compensation device is described, and the specific analysis method is as follows: taking the average speed of the transformer substation at a certain detection time point before a certain operation of the reactive compensation device as an example, acquiring an operation quality evaluation index of the transformer substation at the detection time point before the certain operation of the reactive compensation device and an operation quality evaluation index of all detection time points before the detection time point, and recording the operation quality evaluation indexes as an operation quality evaluation index sigma p of the transformer substation at each detection time point to be analyzed before the certain operation of the reactive compensation device, wherein p is the number of each detection time point to be analyzed, p=1, 2.
Analyzing the average speed of the transformer substation at the detection time point before the operation of the reactive compensation deviceWherein sigma p-1 is an operation quality evaluation index of the transformer substation at the p-1 th detection time point to be analyzed before the operation of the reactive compensation device, T is the duration of the adjacent detection time points, and the average speed of the transformer substation at each detection time point before each operation of the reactive compensation device is analyzed in a similar way.
The method comprises the steps of analyzing the proper switching state of each operation of a reactive power compensation device of a transformer substation, analyzing the proper switching state TQ i of the reactive power compensation device of the transformer substation in each operation based on the switching state and the proper switching state of the reactive power compensation device of the transformer substation in each operation, and comprehensively analyzing the proper switching value of the reactive power compensation device of the transformer substation in each operation by combining the time point TI i and the proper time point TI i' of the reactive power compensation device of the transformer substation in each operationWherein TI' is the allowable error time length of the predefined reactive compensation device corresponding to the switching variation.
It should be noted that, the appropriate value TQ i of the reactive power compensation device of the analysis substation in each running is as follows: comparing the switching state of the reactive power compensation device of the transformer substation in each operation with the suitable switching state, if the switching state of the reactive power compensation device of the transformer substation in a certain operation is the same as the suitable switching state, marking the suitable switching state of the reactive power compensation device of the transformer substation in the operation as IQ, otherwise marking the suitable switching state as IQ ', and further counting the suitable switching state TQ i of the reactive power compensation device of the transformer substation in each operation, wherein TQ i =IQ or IQ'.
In a specific embodiment of the invention, the method for analyzing the appropriate switching state of the transformer substation before each operation of the reactive compensation device comprises the following steps: analyzing operation quality evaluation indexes of the transformer substation at each detection time point before each operation of the reactive compensation deviceAnd constructing an operation quality evaluation index change curve graph of the transformer substation before each operation of the reactive compensation device according to the operation quality evaluation index change curve, obtaining the area S i of the operation quality evaluation index change curve of the transformer substation before each operation of the reactive compensation device, and further analyzing the proper switching state of the transformer substation before each operation of the reactive compensation deviceWherein the method comprises the steps ofThe state of the input is indicated,And the cut-off states are respectively the area threshold value of the running quality evaluation index change curve corresponding to the input state of the reactive power compensation device of the predefined transformer substation and the area threshold value of the running quality evaluation index change curve corresponding to the cut-off state.
The method for setting the reactive power compensation device of the predefined transformer substation specifically comprises the following steps of: the method comprises the steps of obtaining the area threshold value of the operation quality evaluation index change curve corresponding to the input state and the area threshold value of the operation quality evaluation index change curve corresponding to the cut-off state of the reactive power compensation device of each scale transformer substation from a web database, and screening the area threshold value of the operation quality evaluation index change curve corresponding to the input state and the area threshold value of the operation quality evaluation index change curve corresponding to the cut-off state of the reactive power compensation device of the transformer substation according to the scale of the transformer substation.
In a specific embodiment of the present invention, the operation efficiency value η of the reactive power compensation device of the transformer substation is analyzed by a specific analysis method: and extracting the voltage, current and reactive power of each node corresponding to each detection time point from the operation data of the reactive power compensation device of the transformer substation after each operation.
Operation quality evaluation indexes of corresponding nodes of each detection time point of the same transformer substation before each operation of the reactive power compensation deviceThe analysis method of the system is consistent, and the operation quality evaluation index theta ihj of each detection time point of the transformer substation after each operation of the reactive compensation device corresponds to each node is analyzed, wherein h is the number of each detection time point after the operation, h=1, 2, & gt, g is any integer greater than 2.
Analyzing operation efficiency values of all nodes of transformer substationAnd carrying out mean value processing on the reactive power compensation device to obtain an operation efficiency value eta of the reactive power compensation device of the transformer substation, wherein g is the number of detection time points after operation, and l is the number of detection time points before operation.
The method for judging whether the reactive power adjustment of the transformer substation reaches the standard or not comprises the following specific judging method of: comparing the working efficiency evaluation index of the reactive power compensation device of the transformer substation with a predefined working efficiency evaluation index threshold, if the working efficiency evaluation index of the reactive power compensation device of the transformer substation is larger than or equal to the working efficiency evaluation index threshold, judging that the reactive power adjustment of the transformer substation meets the standard, otherwise, judging that the reactive power adjustment of the transformer substation does not meet the standard.
In the second step, the invention analyzes the switching-over shear of the reactive compensation device of the transformer substation through the switching state and the switching time point of the reactive compensation device of the transformer substation, and analyzes the operation efficiency value of the reactive compensation device of the transformer substation through the capacity of the general assembly machine of the transformer substation, the operation data before each operation and the operation data after each operation of the reactive compensation device, thereby analyzing the working efficiency evaluation index of the reactive compensation device of the transformer substation, overcoming the defect of low attention on the aspect in the prior art, improving the suitability of the regulation of the reactive power of the transformer substation, ensuring the stable operation of the transformer substation, improving the quality of the power transmission and the power transmission of the transformer substation, and further ensuring the electricity utilization quality of the user side of the transformer substation.
Step three, analyzing energy storage equipment added to the transformer substation: and analyzing the proper layout quantity of the energy storage devices of the transformer substation, and analyzing the layout points of the energy storage devices of the transformer substation.
In a specific embodiment of the present invention, the analyzing method is that: comparing the operation efficiency value of the reactive compensation device of the transformer substation with the operation efficiency value interval of the reactive compensation device corresponding to each proper layout quantity of the energy storage equipment of the transformer substation stored in the web database, and screening the proper layout quantity of the energy storage equipment of the transformer substation.
In a specific embodiment of the present invention, the specific analysis method for analyzing each energy storage device deployment point of the transformer substation includes: based on the operation efficiency values of all the nodes of the transformer substation, sequencing all the nodes of the transformer substation according to the order from small to large of the operation efficiency values to obtain the sequenced all the nodes of the transformer substation, selecting all the nodes corresponding to the proper layout quantity of the energy storage devices of the transformer substation from top to bottom, and taking the nodes as the layout points of all the energy storage devices of the transformer substation.
According to the method, in the step three, the arrangement points of the energy storage devices of the transformer substation are analyzed through the operation efficiency values of the nodes of the transformer substation, so that the defect that in the prior art, the analysis strength of the energy storage devices of the transformer substation is not deep enough is overcome, the suitability of the energy storage devices of the transformer substation for arranging the nodes is ensured, the operation efficiency of the nodes of the transformer substation is improved, and the adverse effect on the stability of a power grid system of the transformer substation is reduced.
Step four, adding energy storage equipment for test operation: energy storage equipment is distributed at each energy storage equipment distribution point of the transformer substation, test operation is carried out on the transformer substation, and further operation and maintenance data of the transformer substation in the test operation and working state types corresponding to the energy storage equipment are obtained from a transformer substation operation background, wherein the working state types comprise absorption, release and silence.
In the fourth step, the energy storage equipment is distributed at each energy storage equipment distribution point of the transformer substation, the transformer substation is subjected to test operation, and data support is provided for operation and maintenance analysis after adjustment of the subsequent transformer substation.
Step five, operation and maintenance analysis after transformer substation adjustment: and acquiring operation and maintenance data of the transformer substation after adjustment from the operation background of the transformer substation, and further analyzing the effect evaluation coefficient of the adjustment strategy of the transformer substation.
In a specific embodiment of the present invention, the effect evaluation coefficient of the adjustment strategy of the transformer substation is analyzed, and the specific analysis method thereof is as follows: and acquiring voltage, current and reactive power of each node corresponding to each detection time point from operation and maintenance data of the substation in test operation from a substation operation background.
The method is consistent with an analysis method of the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device, and the operation quality evaluation index delta f of the transformer substation at each detection time point of the test operation is obtained through analysis, wherein f is the number of each detection time point of the test operation, f=1, 2, and t are any integers which are larger than 2, so that the comprehensive operation quality evaluation index of the transformer substation in the test operation is synthesizedWhere t is the number of test run detection time points.
And (3) the comprehensive operation quality evaluation index of the transformer substation in test operation and the comprehensive operation quality evaluation index range of the energy storage equipment stored in the web database corresponding to each working state type are selected, so that the proper working state type of the energy storage equipment of the transformer substation is screened.
And extracting the voltage, the current and the reactive power of each node corresponding to each detection time point from the adjusted operation and maintenance data of the transformer substation, and analyzing to obtain an adjusted comprehensive operation quality evaluation index psi of the transformer substation, wherein the voltage, the current and the reactive power are consistent with an analysis method of the comprehensive operation quality evaluation index of the transformer substation in test operation.
Based on the working state type corresponding to each energy storage device of the transformer substation, analyzing an I-shaped compliance value F b of the energy storage device of the transformer substation, b is the number of each energy storage device, b=1, 2, d is any integer greater than 2, and analyzing an effect evaluation coefficient of an adjustment strategy of the transformer substation
In a specific embodiment of the present invention, the method for analyzing the engineering compliance value of the energy storage device of the substation includes: comparing the working state type corresponding to each energy storage device of the transformer substation with the proper working state type, if the working state type corresponding to one energy storage device of the transformer substation is successfully matched with the proper working state type, marking the working state compliance value of the energy storage device as H, otherwise marking the working state compliance value as H ', further counting to obtain the working state compliance value F b of each energy storage device of the transformer substation, wherein F b =H or H', and carrying out mean value processing on the working state compliance value F b to obtain the working state compliance value of the energy storage device of the transformer substation.
In the fifth step, the effect evaluation coefficient of the adjustment strategy of the transformer substation is comprehensively analyzed through the operation and maintenance data of the transformer substation in test operation, the adjusted operation and maintenance data and the working state types of the energy storage devices, so that the adjusted operation efficiency of the transformer substation is ensured, and the operation risk of the transformer substation in direct use is reduced.
Step six, substation adjustment post-treatment: and if the effect of the adjustment strategy of the transformer substation does not reach the standard, sending each energy storage equipment layout point of the transformer substation to an electric power reactive compensation expert, and re-layout each energy storage equipment layout point of the transformer substation.
It should be noted that, the effect of the adjustment strategy of the substation does not reach the standard, and the specific judgment method is as follows: comparing the effect evaluation coefficient of the adjustment strategy of the transformer substation with a predefined effect evaluation coefficient threshold, and if the effect evaluation coefficient of the adjustment strategy of the transformer substation is smaller than the effect evaluation coefficient threshold, judging that the effect of the adjustment strategy of the transformer substation does not reach the standard.
A second aspect of the present invention provides a coordinated optimization configuration system for executing the coordinated optimization configuration method of the reactive compensation device and the energy storage according to any one of the present invention, including: the transformer substation information acquisition module is used for acquiring historical operation information of the reactive power compensation device of the transformer substation from a transformer substation operation background, wherein the historical operation information comprises switching states and time points of each operation, and acquiring total assembly capacity of the transformer substation, operation and maintenance data before each operation and maintenance data after each operation of the reactive power compensation device from the transformer substation operation background, wherein the operation and maintenance data comprises voltage, current and reactive power of each node corresponding to each detection time point.
And the substation information analysis module is used for analyzing the working efficiency evaluation index of the reactive power compensation device of the substation, judging whether the reactive power adjustment of the substation meets the standard or not, and executing the third step if the reactive power adjustment does not meet the standard.
The transformer substation is added with an energy storage device analysis module which is used for analyzing the proper layout quantity of the energy storage devices of the transformer substation and analyzing the layout points of the energy storage devices of the transformer substation.
And adding an energy storage equipment commissioning module for distributing energy storage equipment at each energy storage equipment distribution point of the transformer substation, and performing commissioning on the transformer substation, so as to obtain operation and maintenance data of the transformer substation in the commissioning and the corresponding working state types of each energy storage equipment from a transformer substation operation background, wherein the working state types comprise absorption, release and silence.
The operation and maintenance analysis module is used for acquiring operation and maintenance data of the transformer substation after adjustment from the operation background of the transformer substation, and further analyzing the effect evaluation coefficient of the adjustment strategy of the transformer substation.
And the substation adjustment post-processing module is used for sending each energy storage equipment layout point of the substation to an electric reactive compensation expert if the effect of the adjustment strategy of the substation does not reach the standard, and re-layout each energy storage equipment layout point of the substation.
It should be noted that the invention further comprises a web database, which is used for storing the capacity interval of the general assembly machine corresponding to each scale level, storing the rated voltage, the proper current interval and the proper reactive power interval of the transformer substation, storing the area threshold value of the operation quality evaluation index change curve corresponding to the input state and the area threshold value of the operation quality evaluation index change curve corresponding to the cut-off state of the reactive power compensation device of each scale level transformer substation, storing the operation efficiency value interval of the reactive power compensation device corresponding to each proper arrangement quantity of the energy storage device of the transformer substation, and storing the comprehensive operation quality evaluation index range corresponding to the energy storage device in each working state type.
The foregoing is merely illustrative and explanatory of the principles of this invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of this invention or beyond the scope of this invention as defined in the claims.

Claims (2)

1. The coordinated and optimized configuration method for the reactive power compensation device and the energy storage is characterized by comprising the following steps:
Step one, substation information acquisition: the method comprises the steps of obtaining historical operation information of a reactive power compensation device of a transformer substation from a transformer substation operation background, wherein the historical operation information comprises switching states and time points of each operation, and obtaining total assembly capacity of the transformer substation, operation and maintenance data before each operation and maintenance data after each operation of the reactive power compensation device from the transformer substation operation background, wherein the operation and maintenance data comprises voltage, current and reactive power of each node corresponding to each detection time point;
Step two, substation information analysis: analyzing the working efficiency evaluation index of the reactive power compensation device of the transformer substation, judging whether the reactive power adjustment of the transformer substation meets the standard, and executing the third step if the reactive power adjustment of the transformer substation does not meet the standard;
the working efficiency evaluation index of the reactive power compensation device of the analysis substation comprises the following specific analysis methods:
Based on the capacity of a general assembly machine of the transformer substation and operation and maintenance data of the reactive power compensation device before each operation, analyzing a proper casting shear value epsilon i of the reactive power compensation device of the transformer substation in each operation, wherein i is the number of each operation, i=1, 2, n, n is any integer greater than 2, and screening the proper maximum casting shear value epsilon max and the proper minimum casting shear value epsilon min of the reactive power compensation device of the transformer substation according to the proper casting shear value epsilon i;
Analyzing the operation efficiency value eta of the reactive power compensation device of the transformer substation based on the capacity of the general assembly machine of the transformer substation, the operation and maintenance data before each operation and the operation and maintenance data after each operation of the reactive power compensation device;
Screening each proper operation of the reactive power compensation device of the transformer substation, counting the proper operation times M and the total operation times M' of the reactive power compensation device of the transformer substation, and comprehensively analyzing the working efficiency evaluation index of the reactive power compensation device of the transformer substation Wherein lambda 1、λ2、λ3、λ4 is a weight influence factor corresponding to predefined proper value fluctuation of the shear transformation, proper value of the shear transformation, proper operation times and operation efficiency value respectively;
The method for analyzing the shear suitable value epsilon i of the reactive power compensation device of the transformer substation in each operation comprises the following steps:
Screening the scale grade of the transformer substation based on the capacity of the total assembly machine of the transformer substation and combining the capacity interval of the total assembly machine corresponding to each scale grade stored in the web database;
Extracting voltage U imj, current and reactive power of each node corresponding to each detection time point from operation and maintenance data of the transformer substation before each operation of the reactive compensation device, extracting rated voltage U', suitable current interval and suitable reactive power interval of the transformer substation from a web database, wherein m is the number of each detection time point, m=1, 2, i, l is any integer greater than 2, j is the number of each node, j=1, 2, i, k, k is any integer greater than 2, analyzing a current operation quality evaluation index B imj and a reactive power quality evaluation index D imj of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device, and further integrating the operation quality evaluation index of each node corresponding to each detection time point of the transformer substation before each operation of the reactive compensation device The average value is processed to obtain the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device;
Based on the operation quality evaluation index of the transformer substation at each detection time point before each operation of the reactive compensation device, analyzing the average speed of the transformer substation at each detection time point before each operation of the reactive compensation device, comparing the average speed with a predefined average speed threshold value of the reactive compensation value, and if the average speed of the transformer substation at a certain detection time point before a certain operation of the reactive compensation device is greater than or equal to the average speed threshold value of the reactive compensation device, marking the detection time point as the suitable time point of the reactive compensation device of the transformer substation at the time, and further obtaining the suitable time point of each operation of the reactive compensation device of the transformer substation;
The method comprises the steps of analyzing the proper switching state of each operation of a reactive power compensation device of a transformer substation, analyzing the proper switching state TQ i of the reactive power compensation device of the transformer substation in each operation based on the switching state and the proper switching state of the reactive power compensation device of the transformer substation in each operation, and comprehensively analyzing the proper switching value of the reactive power compensation device of the transformer substation in each operation by combining the time point TI i and the proper time point TI i' of the reactive power compensation device of the transformer substation in each operation Wherein TI' is a predefined allowable error duration of the reactive compensation device corresponding to the throw shear;
the method for analyzing the proper switching state of the transformer substation before each operation of the reactive compensation device comprises the following steps:
Analyzing operation quality evaluation indexes of the transformer substation at each detection time point before each operation of the reactive compensation device And constructing an operation quality evaluation index change curve graph of the transformer substation before each operation of the reactive compensation device according to the operation quality evaluation index change curve, obtaining the area S i of the operation quality evaluation index change curve of the transformer substation before each operation of the reactive compensation device, and further analyzing the proper switching state of the transformer substation before each operation of the reactive compensation deviceWherein the method comprises the steps ofThe state of the input is indicated,Representing a cut-off state, wherein S 'and S' are respectively the area threshold value of the running quality evaluation index change curve corresponding to the input state of the reactive power compensation device of the predefined transformer substation and the area threshold value of the running quality evaluation index change curve corresponding to the cut-off state;
the operation efficiency value eta of the reactive power compensation device of the analysis substation comprises the following specific analysis methods:
extracting voltage, current and reactive power of each node corresponding to each detection time point from the operation data of the reactive power compensation device of the transformer substation after each operation;
operation quality evaluation indexes of corresponding nodes of each detection time point of the same transformer substation before each operation of the reactive power compensation device The analysis method of the system is consistent, and the operation quality evaluation index theta ihj of each detection time point of the transformer substation after each operation of the reactive compensation device corresponds to each node is analyzed, wherein h is the number of each detection time point after the operation, h=1, 2, & gt, g is any integer greater than 2;
Analyzing operation efficiency values of all nodes of transformer substation The average value is processed to obtain the operation efficiency value eta of the reactive power compensation device of the transformer substation, wherein g is the number of detection time points after operation, and l is the number of detection time points before operation;
Step three, analyzing energy storage equipment added to the transformer substation: analyzing the proper layout quantity of the energy storage devices of the transformer substation, and analyzing the layout points of the energy storage devices of the transformer substation;
The method for analyzing the proper layout quantity of the energy storage equipment of the transformer substation comprises the following steps of:
Comparing the operation efficiency value of the reactive compensation device of the transformer substation with the operation efficiency value interval of the reactive compensation device corresponding to each proper layout quantity of the energy storage equipment of the transformer substation stored in the web database, and screening the proper layout quantity of the energy storage equipment of the transformer substation;
the specific analysis method of the energy storage equipment arrangement points of the analysis transformer substation comprises the following steps:
Based on the operation efficiency values of all the nodes of the transformer substation, sequencing all the nodes of the transformer substation according to the order from small to large of the operation efficiency values to obtain sequenced all the nodes of the transformer substation, selecting all the nodes corresponding to the proper layout quantity of the energy storage devices of the transformer substation from top to bottom, and taking the nodes as the layout points of all the energy storage devices of the transformer substation;
Step four, adding energy storage equipment for test operation: arranging energy storage equipment at each energy storage equipment arrangement point of a transformer substation, performing test operation on the transformer substation, and further acquiring operation and maintenance data of the transformer substation in the test operation and working state types corresponding to the energy storage equipment from a transformer substation operation background, wherein the working state types comprise absorption, release and silence;
Step five, operation and maintenance analysis after transformer substation adjustment: acquiring operation and maintenance data of the transformer substation after adjustment from a transformer substation operation background, and further analyzing an effect evaluation coefficient of an adjustment strategy of the transformer substation;
Step six, substation adjustment post-treatment: and if the effect of the adjustment strategy of the transformer substation does not reach the standard, sending each energy storage equipment layout point of the transformer substation to an electric power reactive compensation expert, and re-layout each energy storage equipment layout point of the transformer substation.
2. A coordinated optimization configuration system for performing the reactive power compensation device and energy storage coordinated optimization configuration method of claim 1, comprising:
The system comprises a transformer substation information acquisition module, a power supply module and a power supply module, wherein the transformer substation information acquisition module is used for acquiring historical operation information of a reactive compensation device of a transformer substation from a transformer substation operation background, the historical operation information comprises switching states and time points of each operation, and acquiring total assembly capacity of the transformer substation, operation and maintenance data before each operation and maintenance data after each operation of the reactive compensation device from the transformer substation operation background, wherein the operation and maintenance data comprises voltage, current and reactive power of each node corresponding to each detection time point;
The substation information analysis module is used for analyzing the working efficiency evaluation index of the reactive power compensation device of the substation, judging whether reactive power adjustment of the substation meets the standard or not, and executing the third step if the reactive power adjustment does not meet the standard;
The transformer substation is added with an energy storage device analysis module which is used for analyzing the proper layout quantity of energy storage devices of the transformer substation and analyzing the layout points of the energy storage devices of the transformer substation;
The energy storage equipment test operation module is added and used for distributing energy storage equipment at each energy storage equipment distribution point of the transformer substation, performing test operation on the transformer substation, and further acquiring operation and maintenance data of the transformer substation in the test operation and corresponding working state types of the energy storage equipment from a transformer substation operation background, wherein the working state types comprise absorption, release and silence;
the operation and maintenance analysis module is used for acquiring operation and maintenance data of the transformer substation after adjustment from the operation background of the transformer substation, and further analyzing the effect evaluation coefficient of the adjustment strategy of the transformer substation;
and the substation adjustment post-processing module is used for sending each energy storage equipment layout point of the substation to an electric reactive compensation expert if the effect of the adjustment strategy of the substation does not reach the standard, and re-layout each energy storage equipment layout point of the substation.
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