CN114448348A - Distributed photovoltaic operation data acquisition system and data processing method - Google Patents
Distributed photovoltaic operation data acquisition system and data processing method Download PDFInfo
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00001—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by the display of information or by user interaction, e.g. supervisory control and data acquisition systems [SCADA] or graphical user interfaces [GUI]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
- H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/30—Electrical components
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV cells
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/10—Power transmission or distribution systems management focussing at grid-level, e.g. load flow analysis, node profile computation, meshed network optimisation, active network management or spinning reserve management
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2203/00—Indexing scheme relating to details of circuit arrangements for AC mains or AC distribution networks
- H02J2203/20—Simulating, e g planning, reliability check, modelling or computer assisted design [CAD]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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Abstract
The utility model provides a distributed photovoltaic operation data acquisition system and data processing method, including the following step: calculating the theoretical photovoltaic power generation capacity according to the acquired environmental data and the calculation model of the theoretical photovoltaic power generation capacity; rejecting abnormal data aiming at the acquired electrical parameter data of the distributed photovoltaic power generation unit, and calculating the actual photovoltaic power generation amount; drawing a power generation amount typical curve according to the theoretical power generation amount of the photovoltaic and the actual photovoltaic power generation amount obtained through calculation; and performing fault pre-judgment according to the drawn generating capacity typical curve, performing fault judgment according to the generating electrical parameter data based on a pre-judgment result, and determining an operation and maintenance scheme according to a judgment result. According to the method and the device, the time when the fault occurs can be preliminarily determined, and then the fault judgment result can be obtained by calculation and analysis according to the electrical parameter data at the time when the fault occurs, so that the accuracy of fault judgment can be improved, a corresponding operation and maintenance scheme is provided based on the evaluation result, and quick response and maintenance are realized.
Description
Technical Field
The disclosure relates to the technical field of new energy monitoring, in particular to a distributed photovoltaic operation data acquisition system and a data processing method.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Distributed photovoltaic power supply points are many-sided and wide, the scale is huge, and the number of dispatching objects is increased. The non-scheduled dominating distributed power supplies of 380/220 volt low voltage access are large in scale and continue to grow in number at a rapid pace. Grid connection conditions and operation information are difficult to timely and effectively master, load prediction and mode arrangement difficulty is increased, potential power supply points which cannot be mastered by a scheduling mechanism are more and more, and danger coefficients are increased.
The inventor finds that the distributed photovoltaic information access work is difficult and the data quality is poor. The problems of information acquisition loss of the distributed power supply, low quality of acquired information and the like exist, so that the regulation and control operation of the distribution network has no effective control and regulation means. For example, for a distributed power supply in an unscheduled jurisdiction of 380/220-volt low-voltage grid connection, a problem that a regulation and control mechanism cannot master grid connection conditions and operation information of the distributed power supply exists. If a large number of low-voltage distributed power supplies are connected to the grid, potential power supply points which cannot be mastered by a scheduling mechanism are increased, potential safety hazards of distribution network regulation and control operation are increased.
Disclosure of Invention
The utility model provides a solve above-mentioned problem, provide a distributed photovoltaic operation data acquisition system and data processing method, can tentatively confirm the moment that the trouble takes place, carry out calculation analysis according to the electric parameter data that the trouble takes place moment and obtain the fault judgement result, can improve the accuracy of fault judgement, thereby give corresponding operation and maintenance scheme based on this assessment result, realize quick response maintenance, simultaneously, considered the characteristic of photovoltaic power output, the operation risk to distributed photovoltaic access system under the multi-scene has carried out comprehensive evaluation, thereby generate the operation and maintenance scheme.
In order to achieve the purpose, the following technical scheme is adopted in the disclosure:
one or more embodiments provide a distributed photovoltaic operation data processing method, including the steps of:
calculating the theoretical photovoltaic power generation amount according to the acquired environmental data and the calculation model of the theoretical photovoltaic power generation amount;
rejecting abnormal data aiming at the acquired electrical parameter data of the distributed photovoltaic power generation unit, and calculating the actual photovoltaic power generation amount;
drawing a power generation amount typical curve according to the theoretical power generation amount of the photovoltaic and the actual photovoltaic power generation amount obtained through calculation;
and according to the drawn typical curve of the generated energy, carrying out fault pre-judgment on the distance between the curves of the theoretical photovoltaic generated energy and the actual photovoltaic generated energy, carrying out fault judgment according to the generated electrical parameter data based on the pre-judgment result, and determining an operation and maintenance scheme according to the judgment result.
One or more embodiments provide a distributed photovoltaic operational data acquisition system, comprising: the system comprises an environmental parameter monitoring unit, a power generation electrical parameter data acquisition unit, a distributed photovoltaic operation data acquisition terminal and a remote operation and maintenance center, wherein the environmental parameter monitoring unit and the power generation electrical parameter data acquisition unit are respectively in wireless communication connection with the distributed photovoltaic operation data acquisition terminal, and the distributed photovoltaic operation data acquisition terminal is in communication connection with the remote operation and maintenance center; the distributed photovoltaic operation data acquisition terminal executes the distributed photovoltaic operation data processing method.
Compared with the prior art, the beneficial effect of this disclosure is:
according to the method, the fault pre-judgment is adopted, the fault occurrence time can be preliminarily determined, the fault judgment result is obtained by calculation and analysis according to the electrical parameter data at the fault occurrence time, the fault judgment accuracy can be improved, a corresponding operation and maintenance scheme is provided based on the evaluation result, the quick response maintenance is realized, and the system operation safety can be greatly improved.
Advantages of additional aspects of the disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the disclosure.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure.
Fig. 1 is a system block diagram of embodiment 1 of the present disclosure;
FIG. 2 is a flow chart of a method of embodiment 2 of the present disclosure;
the specific implementation mode is as follows:
the present disclosure is further described with reference to the following drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments in the present disclosure may be combined with each other. The embodiments will be described in detail below with reference to the accompanying drawings.
Example 1
In one or more embodiments, as shown in fig. 1, a distributed photovoltaic operation data acquisition system for acquiring data of a distributed photovoltaic power generation unit includes: the system comprises an environmental parameter monitoring unit, a power generation electrical parameter data acquisition unit, a distributed photovoltaic operation data acquisition terminal and a remote operation and maintenance center, wherein the environmental parameter monitoring unit and the power generation electrical parameter data acquisition unit are in wireless communication connection with the distributed photovoltaic operation data acquisition terminal respectively, and the distributed photovoltaic operation data acquisition terminal is in communication connection with the remote operation and maintenance center.
Optionally, the environmental parameter monitoring unit may be disposed at the distributed photovoltaic power generation unit, and specifically, may be disposed around the photovoltaic cell panel. The temperature and humidity information acquisition system can be used for acquiring temperature and humidity environment information of the solar cell panel, and can comprise solar irradiance, ambient temperature, ambient humidity and back plate temperature.
In some embodiments, the power generation electrical parameter data acquisition unit may be connected to the solar panel and the inverter, and is configured to acquire voltage, current, and switching state output by the solar panel and the inverter, respectively, and calculate output dc power, output ac power, and inverter conversion efficiency.
The number of the generated electrical parameter data acquisition units can be determined according to the number of specific power generation units.
Optionally, the distributed photovoltaic operation data acquisition terminal: the system comprises a data acquisition unit, a data processing unit and a data processing unit, wherein the data acquisition unit is used for acquiring data acquired by an environmental parameter monitoring unit and a power generation electrical parameter data acquisition unit; and after acquiring the data of the environmental parameter monitoring unit where the distributed photovoltaic power generation unit is located, calculating and analyzing to obtain the theoretical power generation power of the distributed photovoltaic power generation unit.
The environment parameter monitoring unit and the power generation electrical parameter data acquisition unit are respectively in wireless communication connection with the distributed photovoltaic operation data acquisition terminal, wherein the wireless communication mode can adopt a communication mode of combining a wireless ad hoc network and GPRS (or 4G or 5G).
Optionally, the wireless ad hoc network may be an LoRa wireless ad hoc network, a zigbee wireless ad hoc network, or the like, and may adopt a communication mode combining LoRa and GPRS (or 4G or 5G).
The communication mode of combining LoRa and GPRS (or 4G or 5G) is as follows: and dividing the subareas, arranging a central virtual substation in each subarea, wherein LoRa communication is adopted in each subarea, and the central virtual substation transmits signals between the subareas through GPRS (general packet radio service) or 4G or 5G or establishes communication with a remote operation and maintenance center through GPRS (general packet radio service) or 4G or 5G.
A central virtual substation is arranged in a parcel, and particularly, a place with good signal of a third-party operator (mobile, communication or telecommunication and the like) is selected in the parcel for establishment. GPRS or 4G or 5G is adopted in the interval, and LoRa communication is adopted in the interval, so that the dependence on third-party operators can be reduced, and the wireless communication charge is greatly reduced.
Meanwhile, as the virtual substations are established in the partition areas for data acquisition and management, great convenience is brought to the management and data analysis of the remote operation and maintenance center.
The technical scheme is that the system further comprises a client side, wherein the client side is arranged on a mobile terminal, and the mobile terminal is a computer or a mobile phone, such as a mobile phone of an operation and maintenance worker. And the mobile terminal is in communication connection with the operation and maintenance center or the distributed photovoltaic operation data acquisition terminal.
And the remote operation and maintenance center receives the data analysis result of the distributed photovoltaic operation data acquisition terminal, and transmits corresponding data to corresponding operation and maintenance personnel to realize rapid scheduling and maintenance.
Example 2
Based on the system of embodiment 1, this embodiment provides a distributed photovoltaic operation data processing method, which can be implemented in a distributed photovoltaic operation data acquisition terminal, and can also be implemented in a remote operation and maintenance center, and includes the following steps:
step 1, calculating the theoretical photovoltaic power generation capacity according to the acquired environmental data and a calculation model of the theoretical photovoltaic power generation capacity;
step 2, eliminating abnormal data aiming at the acquired electrical parameter data of the distributed photovoltaic power generation units, and calculating the actual photovoltaic power generation amount;
step 3, drawing a power generation amount typical curve according to the photovoltaic theoretical power generation amount and the actual photovoltaic power generation amount obtained through calculation;
and 4, performing fault pre-judgment according to the distance between the photovoltaic theoretical power generation amount curve and the photovoltaic actual power generation amount curve in the drawn power generation amount typical curve, performing fault judgment according to power generation electrical parameter data based on a pre-judgment result, and determining an operation and maintenance scheme according to the judgment result.
According to the fault pre-judgment method, the fault occurrence time can be preliminarily determined, the fault judgment result is obtained by calculation and analysis according to the electrical parameter data at the fault occurrence time, the fault judgment accuracy can be improved, a corresponding operation and maintenance scheme is given based on the evaluation result, quick response maintenance is achieved, and the system operation safety can be greatly improved.
Still include the step 5 of assessing the distribution network operation risk, it is specific: the method comprises the steps of determining different types of photovoltaic output according to collected environmental data and electrical parameter data, obtaining the photovoltaic output through Monte Carlo sampling according to typical photovoltaic output of different types, carrying out comprehensive calculation on operation risks of the power distribution network in different scenes, and carrying out comprehensive evaluation on the operation risks of the distributed photovoltaic access power distribution network in multiple scenes.
In the step 1, the environmental data comprise environmental factors such as solar irradiance, temperature, humidity, longitude and latitude of the position where the power generation unit is located, installation inclination angle of the photovoltaic cell panel, weather conditions and the like. The calculation model of the photovoltaic theoretical power generation is the existing model.
In step 2, the electrical parameter data of the distributed photovoltaic power generation unit comprises: the voltage, the current and the switching state output by the solar cell panel and the inverter, as well as the output direct current power, the output alternating current power and the inverter conversion efficiency obtained by calculation; due to the reliability of the photovoltaic power generation equipment and the environmental impact, abnormal data may exist.
Optionally, the method for removing abnormal data specifically includes: and setting normal range data of the electrical parameter data according to historical operating data, and removing data beyond the normal range. The abnormal data are eliminated, so that fluctuation of an actual photovoltaic power generation capacity curve can be reduced, and an obtained evaluation result is more accurate.
And step 2, calculating the actual photovoltaic power generation amount. On the basis of obtaining the electrical parameters of the distributed photovoltaic power generation units, after abnormal data are removed, the actual photovoltaic power generation amount is calculated according to the voltage and current data output by the inverter, the conversion efficiency of the inverter is referred, and the photovoltaic power generation amount is converted and solved.
In step 3, the power generation amount typical curve comprises a daily power generation amount curve and a monthly power generation amount curve.
Establishing a daily and monthly power generation capacity curve, specifically: and drawing a daily power generation amount typical curve by adopting a statistical method according to daily photovoltaic theoretical power generation amount and photovoltaic actual power generation amount data, and drawing a monthly power generation amount curve on the basis of daily statistical data.
In step 4, the specific method of pre-judging may be to compare the theoretical photovoltaic power generation amount calculated in real time with the actual power generation amount, and preliminarily determine whether the photovoltaic inverter is in a normal operating state.
In consideration of the universality of the data sample, the pre-judging method can also be as follows: and selecting the photovoltaic theoretical generating capacity and the photovoltaic actual generating capacity curves of the day and the month for comparison, wherein the date with the large deviation error of the two curves indicates that the photovoltaic generating unit is poor in operation state on the same day.
The method for judging the fault according to the power generation electrical parameter data based on the pre-judgment result specifically comprises the following steps: according to the time point of the pre-judged fault, selecting inverter data and photovoltaic irradiance data of the fault time point to determine whether the photovoltaic inverter and the photovoltaic assembly have faults or not; if a fault occurs, the power generation system needs to be replaced in time, so that the loss of the power generation amount of a user is reduced.
Further, the method also comprises the following steps: and transmitting the data analysis result to a remote operation and maintenance center and a client APP of on-site operation and maintenance personnel in real time, and formulating an equipment operation and maintenance scheme.
Specifically, the obtained photovoltaic power generation operation information, health state information and the like can be sent to a client APP of a remote operation and maintenance center and on-site operation and maintenance personnel in a wireless communication mode;
the remote operation and maintenance center analyzes information such as photovoltaic power generation capacity and equipment state faults according to daily, monthly and annual statistics and comprehensively evaluates the comprehensive efficiency of photovoltaic power generation;
photovoltaic power generation data is looked over through APP to on-spot operation and maintenance personnel in time receive the equipment health status prompt message that distributed photovoltaic operation data acquisition terminal sent, thereby check abnormal equipment fast, further promote staff's work efficiency.
According to the embodiment, the monitoring of the low-voltage distributed photovoltaic real-time running state of the power grid is realized, and when an emergency occurs, the fault is quickly positioned and the operation, maintenance and repair are carried out quickly in time, so that the waste of electric energy is effectively reduced, and the damage to a person, a power grid and equipment caused by reverse power transmission can be avoided. Meanwhile, LoRa is the technology with the most technical characteristics and competitive advantages in the low-power-consumption wide area network technology, the receiving sensitivity of the system reaches-148 dBm, the remote communication exceeding 15km is supported, the receiving current of the equipment is only 10mA, the dormant current is less than 200nA, the service life of the equipment battery can be prolonged, the network frequency band is free completely in the practical application scene, the networking is flexible, and the monitoring efficiency is greatly improved.
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. A distributed photovoltaic operation data processing method is characterized by comprising the following steps:
calculating the theoretical photovoltaic power generation capacity according to the acquired environmental data and the calculation model of the theoretical photovoltaic power generation capacity;
the method comprises the steps of eliminating abnormal data aiming at the obtained electric parameter data of the distributed photovoltaic power generation units, and calculating the actual photovoltaic power generation amount;
drawing a power generation amount typical curve according to the theoretical power generation amount of the photovoltaic and the actual photovoltaic power generation amount obtained through calculation;
and according to the drawn typical curve of the generated energy, carrying out fault pre-judgment on the distance between the curves of the theoretical photovoltaic generated energy and the actual photovoltaic generated energy, carrying out fault judgment according to the generated electrical parameter data based on the pre-judgment result, and determining an operation and maintenance scheme according to the judgment result.
2. The distributed photovoltaic operation data processing method according to claim 1, characterized by: still include the step of assessing the distribution network operation risk, it is specific: the method comprises the steps of determining different types of photovoltaic output according to collected environmental data and electrical parameter data, obtaining the photovoltaic output through Monte Carlo sampling according to typical photovoltaic output of different types, carrying out comprehensive calculation on operation risks of the power distribution network in different scenes, and carrying out comprehensive evaluation on the operation risks of the distributed photovoltaic access power distribution network in multiple scenes.
3. The distributed photovoltaic operation data processing method according to claim 1, characterized by: the environmental data comprise solar irradiance, temperature, humidity, longitude and latitude of the position where the power generation unit is located, a photovoltaic cell panel installation inclination angle and weather conditions;
alternatively, the electrical parameter data comprises: the voltage, the current and the switch state output by the solar cell panel and the inverter, and the output direct current power, the output alternating current power and the inverter conversion efficiency obtained through calculation.
4. The distributed photovoltaic operation data processing method according to claim 1, characterized by: the method for eliminating the abnormal data specifically comprises the following steps: and setting normal range data of the electrical parameter data according to historical operating data, and removing data beyond the normal range.
5. The distributed photovoltaic operation data processing method according to claim 1, characterized by: the pre-judging method comprises the steps of comparing the photovoltaic theoretical generated energy calculated in real time with the actual generated energy, and primarily judging whether the photovoltaic inverter is in a normal working state;
or
The pre-judging method comprises the following steps: and selecting curves of the photovoltaic theoretical generated energy and the photovoltaic actual generated energy for comparison, wherein the section with large deviation error of the two curves is a time period with poor operation state of the photovoltaic power generation unit.
6. The distributed photovoltaic operation data processing method according to claim 1, characterized by: and transmitting the data analysis result to a remote operation and maintenance center and a client of an on-site operation and maintenance worker in real time, and formulating an equipment operation and maintenance scheme.
7. The utility model provides a distributing type photovoltaic operation data acquisition system which characterized by: the method comprises the following steps: the system comprises an environmental parameter monitoring unit, a power generation electrical parameter data acquisition unit, a distributed photovoltaic operation data acquisition terminal and a remote operation and maintenance center, wherein the environmental parameter monitoring unit and the power generation electrical parameter data acquisition unit are respectively in wireless communication connection with the distributed photovoltaic operation data acquisition terminal, and the distributed photovoltaic operation data acquisition terminal is in communication connection with the remote operation and maintenance center; the distributed photovoltaic operation data acquisition terminal executes a distributed photovoltaic operation data processing method as claimed in any one of claims 1 to 6.
8. The distributed photovoltaic operational data collection system of claim 7, wherein: the environment parameter monitoring unit is arranged at the distributed photovoltaic power generation unit;
or the environment parameter monitoring unit and the power generation electrical parameter data acquisition unit are respectively in wireless communication connection with the distributed photovoltaic operation data acquisition terminal, wherein the wireless communication mode adopts a communication mode of combining a wireless ad hoc network with GPRS (general packet radio service) or 4G or 5G.
9. The distributed photovoltaic operational data collection system of claim 8, wherein: the wireless ad hoc network is a LoRa wireless ad hoc network or a zigbee wireless ad hoc network.
10. The distributed photovoltaic operational data collection system of claim 8, wherein: the wireless communication mode is as follows: and dividing the subareas, arranging a central virtual substation in each subarea, wherein LoRa communication is adopted in each subarea, and the central virtual substation transmits signals between the subareas through GPRS (general packet radio service) or 4G or 5G, or establishes communication with a remote operation and maintenance center through GPRS (general packet radio service) or 4G or 5G.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116111951A (en) * | 2023-04-13 | 2023-05-12 | 山东中科泰阳光电科技有限公司 | Data monitoring system based on photovoltaic power generation |
| CN116827264A (en) * | 2023-08-29 | 2023-09-29 | 广东阳硕绿建科技股份有限公司 | Early warning system for photovoltaic power generation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116111951A (en) * | 2023-04-13 | 2023-05-12 | 山东中科泰阳光电科技有限公司 | Data monitoring system based on photovoltaic power generation |
| CN116111951B (en) * | 2023-04-13 | 2023-08-18 | 山东理工职业学院 | Data monitoring system based on photovoltaic power generation |
| CN116827264A (en) * | 2023-08-29 | 2023-09-29 | 广东阳硕绿建科技股份有限公司 | Early warning system for photovoltaic power generation |
| CN116827264B (en) * | 2023-08-29 | 2023-10-31 | 广东阳硕绿建科技股份有限公司 | Early warning system for photovoltaic power generation |
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