CN115940424A - Centralized monitoring and remote capacity checking method for substation direct-current power supply system on centralized control station side - Google Patents
Centralized monitoring and remote capacity checking method for substation direct-current power supply system on centralized control station side Download PDFInfo
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Abstract
The invention discloses a centralized monitoring and remote capacity checking method for a substation direct-current power supply system on a centralized control station side. The method comprises the steps of collecting and processing direct current system data, monitoring direct current system information in a centralized mode, carrying out remote capacity checking operation on a storage battery pack, capturing and matching charging and discharging events on line, carrying out internal resistance testing operation on the storage battery and carrying out remote capacity checking automatic reporting. According to the centralized monitoring and remote capacity checking method for the direct-current system of the transformer substation on the centralized control station side, operation and maintenance personnel do not need to go to field charge and discharge tests of all transformer substations regularly, the remote capacity checking tests of the storage battery pack can be realized on the centralized control station side as required, the health condition of direct-current equipment is evaluated by analyzing the capacity checking report, manpower, material resources and time are saved, and lean management and intensive operation and maintenance of direct-current system equipment are facilitated.
Description
Technical Field
The invention belongs to the technical field of electric power engineering, and particularly relates to a centralized monitoring and remote capacity checking method for a substation direct-current power supply system on a centralized control station side.
Background
Under the optimized background of the 'unattended operation and maintenance monitoring' power transformation operation and maintenance monitoring mode, the centralized monitoring and control of the direct current system of the transformer substation on the side of the centralized control station is a new technical trend. Along with the construction of a new generation of centralized control station equipment monitoring system and the optimization and transformation of substation end equipment, the substation direct current system online monitoring device has a four-remote function and can be connected into a centralized control station for centralized monitoring. The storage battery of the transformer substation is in a floating charge operation state for a long time, so that the internal resistance is increased, and the capacity is reduced. According to the operation and maintenance regulations of direct current equipment, a checking discharge test is required to be regularly carried out, the capacity defect of the storage battery is found, effective substances of a polar plate of the storage battery are activated, the capacity is recovered, and the service life of the equipment is prolonged. The prior patent publication conditions are searched and analyzed, technical documents are remote nuclear capacity of the storage battery online monitoring device at the transformer substation end, and direct current centralized monitoring and storage battery remote nuclear capacity operation are not reported in public.
Prior art document 1 (CN 115166558A) discloses an intelligent health management system and method for remote capacity checking of a storage battery, which includes a storage battery pack, a terminal operating platform, a central processing unit, a wireless communication module, a charge and discharge control module, an acquisition module, a data storage module, and a data transceiver module; the terminal operation platform is electrically connected with the central processing unit; the wireless communication module is electrically connected with the central processing unit through a communication interface; the wireless communication module is in wireless connection with the data transceiver module through 4G. As represented by the prior art document 1, a typical disadvantage is that the remote capacity checking of the storage battery online monitoring device is implemented only at the substation side, and centralized monitoring and storage battery pack remote capacity checking operations cannot be performed at the centralized control station.
Disclosure of Invention
In order to solve the defects in the prior art, the invention provides a centralized monitoring and remote capacity checking method for a substation direct-current power supply system on a centralized control station side. The centralized control station side is connected with a plurality of substation direct-current power supply online monitoring devices to realize centralized monitoring of a substation direct-current power supply system, and the centralized monitoring comprises direct-current system equipment modeling and data acquisition and processing, direct-current system information centralized monitoring, storage battery pack remote capacity checking operation, charging and discharging event online capturing matching correlation, storage battery internal resistance testing operation and remote capacity checking automatic reporting.
The invention adopts the following technical scheme. In a first aspect of the disclosure, a direct current system device modeling and data acquisition process. The direct current system equipment modeling comprises direct current equipment modeling and measurement modeling; the direct-current equipment modeling comprises the modeling of the affiliated relationship of types and levels of a transformer substation, a direct-current power supply, a storage battery pack, a storage battery monomer, an inverter power supply, a charging assembly, a charge and discharge switch and the like. The measurement modeling expands measurement types of a charging state, a discharging state, a single battery current, a single battery resistance, a single battery voltage, a storage battery pack current, a storage battery pack voltage and a storage battery pack capacity, and meets the data access requirement.
The centralized control station is communicated with the substation communication gateway machine or directly communicated with the direct-current power supply online monitoring device, and information processing of uplink and downlink data of the direct-current power supply system is achieved through a main substation protocol interface and a substation protocol interface.
Data acquisition and processing are carried out in the centralized control station based on a direct current system equipment model; the data acquisition and processing comprises the following steps: remote measurement acquisition quantity, remote signaling acquisition quantity, remote control quantity and remote regulation quantity.
The remote measurement acquisition quantity comprises parameters such as alternating current input voltage, direct current bus voltage, total load current, storage battery pack voltage, storage battery monomer current, storage battery monomer internal resistance, battery charging and discharging current and the like; the remote signaling acquisition quantity comprises signals of charging device faults, alternating voltage abnormity, control bus over/under voltage, direct current grounding, direct current air circuit breaker tripping, battery pack fuse fusing, insulation monitoring, other device faults and the like; the remote control quantity comprises the control of the on and off of the direct-current power supply device, the control of the on and off of the discharge switch and the control of the on and off of the charge switch; the remote regulation comprises remote setting of parameters of the direct-current power supply device.
In a second aspect of the present disclosure, the dc system information is monitored in a centralized manner, and the dc system device information is displayed in three dimensions, namely, a centralized control station layer, a substation layer, and a device component layer.
The centralized control station layer displays the direct current system equipment classification statistical information of each transformer substation, and the display content comprises an equipment statistical classification pie chart, a tree navigation menu, a charge and discharge event window and equipment alarm real-time information; monitoring the direct current equipment at the substation level, and displaying a main wiring diagram of a direct current system of the substation, real-time operation information of the direct current system, a charging and discharging event window and real-time equipment alarm information; the equipment component layer respectively displays the running information of elements of the direct current equipment, and the monitoring comprises storage battery pack intelligent discharge on-line monitoring, storage battery monomer voltage monitoring, storage battery monomer current monitoring, storage battery monomer internal resistance monitoring and storage battery pack insulation on-line monitoring.
The display means comprises a tree navigation menu, a main wiring diagram of a direct current system of the transformer substation, a charging and discharging event window, a charging and discharging curve diagram, real-time equipment alarm information and a direct current equipment classification statistical pie chart.
According to the second aspect of the method, the tree navigation menu comprises a hierarchy structure of a maintenance company, an operation and maintenance class and a transformer substation, and the tree navigation menu can be switched to each transformer substation. The main wiring diagram of the direct current system of the transformer substation visually reflects the wiring relation among various power supply devices, the charging and discharging process and displays the switch position and the direct current bus voltage in real time. And a charging and discharging event window is used for capturing the total number of the completed and ongoing charging and discharging events in a classified and counted mode on line, skipping to check the recording details of the charging/discharging events and displaying the content serial number, the operation and maintenance class, the transformer substation, the charging/discharging event, the starting time and the ending time. The charging and discharging curve chart shows charging and discharging events in a tabulated and graphic mode, and shows a current/voltage/capacity historical curve and a charging current/voltage/capacity historical curve in a discharging process in a comparison mode. The direct current equipment classification statistics pie chart comprises direct current control buses, a storage battery pack, a charging device, an inverter power supply, the total equipment number of a direct current switch and the equipment state. The equipment alarms in real time, and dynamically displays the real-time alarm, state change and out-of-limit information of the equipment.
In the third aspect of the disclosure, a centralized control station side triggers remote capacity checking operation of a storage battery pack, a direct current system online monitoring device starts a capacity checking test, and a discharging process and a charging process are implemented; and manual triggering and automatic triggering of the remote core capacity of the storage battery pack are realized by utilizing the remote control operation and intelligent linkage functions of the centralized control station side.
The centralized control station side realizes the discharging control and charging control processes of remote core capacity step by step through a basic remote control function.
The remote signaling states of a charging switch and a discharging switch are monitored by a centralized control station side through an intelligent linkage module, and a linkage strategy is configured to realize the control process of remote core capacity.
The storage battery pack remote capacity checking operation comprises the following steps:
the centralized control station issues a remote nuclear capacity starting control instruction, and the direct current system online monitoring device starts a nuclear capacity test; the centralized control station side monitors the remote signaling state of the remote nuclear capacity signal in real time, and when the state is changed from a sub-position to a closed position, a discharge test starting instruction is issued to start the discharge of the direct current system; the centralized control station side monitors the remote signaling state of the discharge switch in real time, and when the state is changed from the closed position to the separated position, the representation discharge process is finished; and the centralized control station side issues a charging test starting instruction to start charging the direct-current system, monitors the remote signaling state of the charging switch in real time, and represents that the charging process is finished when the state is from a closed position to a separated position.
In the fourth aspect of the disclosure, the centralized control station side performs online capturing matching correlation of charge and discharge events during the core-capacity operation, and generates a storage battery remote core-capacity report after the core-capacity operation is finished; according to the characteristics of the first discharging and recharging events of the remote nuclear capacity, the position state change and the displacement time of a charging switch and a discharging switch of the direct current system are monitored in real time, and the complete remote nuclear capacity events are recorded and stored on the side of the centralized control station through the online capturing and matching association of the discharging process and the charging process, wherein the contents comprise equipment description, a transformer substation, the nuclear capacity starting time, the nuclear capacity ending time, the discharging starting time, the discharging ending time, the discharging duration, the charging starting time, the charging ending time and the charging duration.
The method comprises the steps of 1, performing storage battery pack remote capacity checking operation, reading a direct current system equipment model and real-time data, monitoring a discharge event in real time, judging the matching relation and recording the starting time and the ending time of the discharge event, monitoring the charge event in real time, matching the matching relation and recording the starting time and the ending time of the charge event, performing discharge event charging event correlation matching in a single remote capacity checking process, and correlating measured data in step (6) to automatically generate a storage battery pack remote capacity checking report.
In a fifth aspect of the disclosure, a remote kernel volume automatic statement. According to the method, the charging event and the discharging event of the remote capacity checking of the storage battery pack are captured on line according to the fourth aspect, the process data of the capacity checking test is automatically correlated, the discharging curve and the discharging curve are drawn according to the rule correlation data, the capacity checking report is automatically generated according to the report style template, the content of the capacity checking report comprises basic information, discharging chart data and charging chart data, and the method has the function of report export printing.
The discharge chart data comprises a storage battery pack terminal voltage curve in a discharge process, a storage battery pack current curve in the discharge process, a storage battery pack capacity curve in the discharge process, storage battery monomer voltage and current list data in the discharge process and a discharged battery voltage histogram.
The charging chart data comprises a storage battery pack terminal voltage curve in the charging process, a storage battery pack current curve in the charging process, a storage battery pack capacity curve in the charging process, storage battery single voltage and current list data in the charging process and a charged battery voltage histogram.
The first method, referred to as dc device manufacturer curve drawing, draws points by time and mutation rate, and takes the points every 30 seconds, if the data change rate between the two points is 5% (the value can be set). The second is plotted every six minutes one hour prior to discharge or charge, followed by one hour.
In a sixth aspect of the disclosure, remote operation and automatic reporting of battery internal resistance tests are provided. And the remote operation of the internal resistance test of the storage battery is realized by utilizing the basic remote control operation function of the centralized control station side, the events of the starting time and the ending time of the internal resistance test are recorded, and the internal resistance test report is automatically generated according to the associated test data and a report template. The internal resistance test report content comprises basic information and an internal resistance histogram and has a report export printing function.
Compared with the prior art, the centralized monitoring and remote capacity checking method for the direct-current system of the substation at the centralized control station side has the advantages that operation and maintenance personnel do not need to go to field charge and discharge tests of all substations regularly, the remote capacity checking test of the storage battery pack can be realized at the centralized control station side as required, the health condition of the direct-current equipment is analyzed and evaluated through the capacity checking report, labor, material resources and time are saved, and lean management and intensive operation and maintenance of the direct-current system equipment are facilitated.
Drawings
Fig. 1 is a functional block diagram of a centralized monitoring and remote capacity checking method for a centralized control station-side dc system according to an embodiment of the present disclosure;
fig. 2 is an algorithm flowchart of a method for remote capacity checking of a storage battery pack on the side of a central control station according to an embodiment of the disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. The embodiments described herein are only some embodiments of the invention, and not all embodiments. All other embodiments obtained by a person skilled in the art without any inventive step based on the spirit of the present invention are within the scope of the present invention.
The invention provides a centralized monitoring and remote capacity checking method for a substation direct-current power supply system on a centralized control station side. The centralized control station side is connected with a plurality of substation direct-current power supply online monitoring devices, and centralized monitoring of a substation direct-current power supply system is achieved, and the centralized monitoring comprises direct-current system equipment modeling and data acquisition and processing, direct-current system information centralized monitoring, storage battery pack remote capacity checking operation, charging and discharging event online capturing matching correlation, storage battery internal resistance testing operation and remote capacity checking automatic reporting.
Specifically, as shown in fig. 1, embodiment 1 of the present invention provides a centralized monitoring and remote capacity checking method for a substation dc power supply system on a centralized control station side, including:
and connecting a plurality of on-line monitoring devices of the direct-current power supply of the transformer substation to a centralized control station side for centralized monitoring of the direct-current power supply system of the transformer substation.
And performing direct-current system equipment modeling, including direct-current equipment modeling and measurement modeling.
In a preferred but non-limiting embodiment, the modeling of the direct current equipment comprises modeling of the belongings of types and hierarchies of a transformer substation, a direct current power supply, a storage battery pack, a storage battery monomer, an inverter power supply, a charging assembly, a charging and discharging switch and the like. The measurement modeling expands measurement types of a charging state, a discharging state, a single battery current, a single battery resistance, a single battery voltage, a storage battery current, a storage battery voltage and a storage battery capacity, and meets the data access requirement.
And data acquisition and processing are carried out, the centralized control station is communicated with a communication gateway of a transformer substation or directly communicated with the direct-current power supply online monitoring device, and the information processing of the uplink and downlink data of the direct-current power supply system is carried out through a protocol interface of the main substation and the substation. The data acquisition and processing comprises the following steps: remote measurement acquisition quantity, remote signaling acquisition quantity, remote control quantity and remote regulation quantity. The centralized control station comprises a data acquisition module, and the function of the data acquisition module comprises communication with a substation communication gateway machine or direct communication with a direct-current power supply online monitoring device.
In a preferred but non-limiting embodiment, the telemetric acquisition amount comprises parameters such as alternating current input voltage, direct current bus voltage, total load current, storage battery pack voltage, storage battery cell current, storage battery cell internal resistance, battery charging and discharging current and the like; the remote signaling acquisition quantity comprises signals of charging device faults, alternating voltage abnormity, control bus over/under voltage, direct current grounding, direct current air circuit breaker tripping, battery pack fuse fusing, insulation monitoring, other device faults and the like; the remote control quantity comprises the control of the on and off of the direct-current power supply device, the control of the on and off of the discharge switch and the control of the on and off of the charge switch; the remote regulation comprises remote setting of parameters of the direct-current power supply device.
The centralized monitoring transformer substation direct current power supply system comprises: and based on the direct current system equipment model, displaying direct current system equipment information according to three dimensions of a centralized control station layer, a transformer substation layer and an equipment component layer.
In a preferred but non-limiting embodiment, the dc system device information is presented using a tree navigation menu, a substation dc system main wiring diagram, a charge and discharge event window, a charge and discharge curve diagram, device alarm real-time information, and/or a dc device classification statistics pie chart.
In a further preferred but non-limiting embodiment, the centralized control station layer displays the dc system device classification statistical information of each substation, and the display content includes a device statistical classification pie chart, a tree navigation menu, a charging and discharging event window, and device alarm real-time information. Monitoring the direct current equipment at the substation level, and displaying a main wiring diagram of a direct current system of the substation, real-time operation information of the direct current system, a charging and discharging event window and real-time equipment alarm information. The equipment component layer respectively displays the running information of elements of the direct current equipment, and the monitoring comprises storage battery pack intelligent discharge online monitoring, storage battery monomer voltage monitoring, storage battery monomer current monitoring, storage battery monomer internal resistance monitoring, storage battery pack insulation online monitoring and the like.
In a further preferred but non-limiting embodiment, the tree navigation menu comprises a hierarchy of service companies, operation and maintenance classes, and substations, and can jump to each substation. A main wiring diagram of a direct current system of a transformer substation visually reflects the wiring relation and the charging and discharging process among various power supply devices and displays the switch position and the direct current bus voltage in real time. And a charging and discharging event window is used for capturing the total number of the completed and ongoing charging and discharging events in a classified and counted mode on line, skipping to check the recording details of the charging/discharging events and displaying the content serial number, the operation and maintenance class, the transformer substation, the charging/discharging event, the starting time and the ending time. And the charging and discharging curve chart shows charging and discharging events in a tabulated and graphic mode, and shows a current/voltage/capacity historical curve and a charging current/voltage/capacity historical curve in a discharging process in a comparison mode. The direct current equipment classification statistics pie chart comprises direct current control buses, a storage battery pack, a charging device, an inverter power supply, the total equipment number of a direct current switch and the equipment state. The equipment alarms in real time and dynamically displays real-time alarm, state change and out-of-limit information of the equipment.
The method comprises the steps that a centralized control station side triggers remote capacity checking operation of a storage battery pack, for example, but not limited to, a direct-current system online monitoring device starts a capacity checking test, a discharging process and a charging process are implemented, and the remote control operation and intelligent linkage function of the centralized control station side is utilized for manual triggering and automatic triggering of the remote capacity checking of the storage battery pack.
Specifically, the on-line monitoring device of the direct current system for realizing the discharge control and the charge control of the direct current system aiming at a plurality of remote control points, and the centralized control station side realizes the discharge control and the charge control process of remote core capacity by step operation through a basic remote control function. The on-line monitoring device of the direct current system aims at a single remote control point to realize remote core capacity starting, discharging control and charging control of the direct current system, the centralized control station side monitors remote signaling states of a charging switch and a discharging switch through an intelligent linkage module, and a linkage strategy is configured to realize a control process of remote core capacity.
In a preferred but non-limiting embodiment, the battery pack remote capacity checking operation comprises the following steps:
the centralized control station issues a remote nuclear capacity starting control instruction, and the direct current system online monitoring device starts a nuclear capacity test; the centralized control station side monitors the remote signaling state of the remote nuclear capacity signal in real time, and when the state is changed from a sub-position to a closed position, a discharge test starting instruction is issued to start the discharge of the direct current system; the centralized control station side monitors the remote signaling state of the discharge switch in real time, and when the state is changed from the closed position to the separated position, the representation discharge process is finished; and the centralized control station side issues a charging test starting instruction to start charging of the direct-current system, monitors the remote signaling state of the charging switch in real time, and represents that the charging process is finished when the state is from the closed position to the separated position. And ending the control starting, the discharging process and the charging process of the remote core capacitor.
In a further preferred but non-limiting embodiment, during the battery pack remote capacity checking operation, charge and discharge events are subjected to online capture matching correlation.
Specifically, according to the characteristics of the discharging and recharging events of the remote core capacity, the position state change and the displacement time of a charging switch and a discharging switch of the direct current system are monitored in real time, and the completely stored remote core capacity events are recorded and stored on the centralized control station side through the online capturing and matching correlation of the discharging process and the charging process, wherein the contents comprise equipment description, a transformer substation, core capacity starting time, core capacity ending time, discharging starting time, discharging ending time, discharging duration, charging starting time, charging ending time and charging duration.
In a preferred but non-limiting embodiment, for online capture and matching correlation of charge and discharge events in a single remote capacity check process, a typical implementation method is shown in fig. 2, and includes the following steps:
step (1): the centralized control station issues a remote core capacity starting control instruction to perform storage battery pack remote core capacity operation;
step (2): reading a direct current system equipment model and real-time data;
and (3): monitoring a discharge event in real time, comparing the position state of a discharge switch, and recording the discharge starting time when the position is changed from a separated position to a closed position; when the position is changed from closed to open, the end time of the discharge is recorded, and the start time and the end time of the discharge event are matched and associated and recorded.
Monitoring a charging event in real time, comparing the position state of a charging switch in real time, and recording the charging starting time when the position is changed from open position to closed position; when the position is changed from closed to open, the end time of charging is recorded, and the start time and the end time of the charging event are matched and associated and recorded.
And (5): and the discharging event and charging event correlation of the remote core-capacitance process is matched. According to the process characteristics of the discharging and recharging events of the single remote core-capacitor, the discharging switch is changed from open position to open position, the discharging switch is changed from closed position to open position, the charging switch is changed from open position to open position, and the charging switch is changed from closed position to open position, the charging events and the discharging events in the single core-capacitor process are automatically matched and associated. If the event characteristics are not met, the event is not recorded as a single remote kernel-content event.
And (6): and (4) correlating the measurement data, and automatically generating a storage battery pack remote capacity checking report.
In a preferred but non-limiting embodiment, in step (6), the remote kernel volume automatic report. According to the charge event and the discharge event of the online captured storage battery pack remote capacity checking process, the process data of the capacity checking test is automatically correlated, the discharge curve and the discharge curve are drawn according to the rule correlation data, the capacity checking report is automatically generated according to the report style template, the content of the capacity checking report comprises basic information, discharge chart data and charge chart data, and the capacity checking report has a report export printing function.
In a preferred but non-limiting embodiment, in step (6), the core content reporting basic information content item includes: the method comprises the following steps of unit name, substation name, battery pack number, battery section number, nominal capacity, single rated voltage, battery pack manufacturer, battery type, operation life, test department, tester, test start time, test end time, discharge start time, discharge end time, discharge duration, charge start time, charge end time, charge duration, termination reason, pack voltage conclusion, pack capacity conclusion and storage battery whole pack conclusion.
In a further preferred but non-limiting embodiment, in step (6), the discharge graph data includes a battery terminal voltage curve during discharge, a battery pack current curve during discharge, a battery capacity curve during discharge, battery cell voltage current tabulation data during discharge, and a battery voltage histogram after discharge. The charging chart data comprises a storage battery pack terminal voltage curve in the charging process, a storage battery pack current curve in the charging process, a storage battery pack capacity curve in the charging process, storage battery single body voltage and current list data in the charging process and a charged battery voltage histogram.
In a further preferred but non-limiting embodiment, there are two discharge curves and discharge curve plotting methods, the first one, referred to as dc plant manufacturer's curve plotting by time and mutation rate, taken every 30 seconds if the rate of change of data between two points is 5% (this value can be set). The second method is to take points every six minutes one hour before discharging or charging, and then take points one hour after discharging or charging.
The centralized monitoring and remote capacity checking method for the substation direct-current power supply system at the centralized control station side provided by the invention can also comprise the following steps: remote operation and automatic report of the storage battery internal resistance test. Specifically, the remote operation of the internal resistance test of the storage battery is realized by utilizing the basic remote control operation function of the centralized control station side, the starting time and the ending time of the internal resistance test are recorded, and the internal resistance test report is automatically generated according to the associated test data and a report template. The internal resistance test report content comprises basic information and an internal resistance histogram and has a report export printing function. The basic information items comprise unit names, transformer station names, battery pack manufacturers, battery pack numbers, battery section numbers, test time, monomer internal resistance average values, internal resistance maximum values, maximum internal resistance battery numbers, internal resistance minimum values and minimum internal resistance battery numbers. The internal resistance value of each single body of the storage battery is visually displayed by an internal resistance bar chart in a chart mode.
Compared with the prior art, the centralized monitoring and remote capacity checking method for the direct-current system of the substation at the centralized control station side has the advantages that operation and maintenance personnel do not need to go to field charge and discharge tests of all substations regularly, the remote capacity checking test of the storage battery pack can be realized at the centralized control station side as required, the health condition of the direct-current equipment is analyzed and evaluated through the capacity checking report, labor, material resources and time are saved, and lean management and intensive operation and maintenance of the direct-current system equipment are facilitated.
The present disclosure may be systems, methods, and/or computer program products. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied thereon for causing a processor to implement various aspects of the present disclosure.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be interpreted as a transitory signal per se, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or an electrical signal transmitted through an electrical wire.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or edge servers. The network adapter card or network interface in each computing/processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present disclosure may be assembler instructions, instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source or object code written in any combination of one or more programming languages, including an object oriented programming language such as Smalltalk, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, the electronic circuitry that can execute the computer-readable program instructions implements aspects of the present disclosure by utilizing the state information of the computer-readable program instructions to personalize the electronic circuitry, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA).
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A centralized monitoring and remote capacity checking method for a substation direct-current power supply system on a centralized control station side is characterized by comprising the following steps:
connecting a plurality of transformer substation direct-current power supply online monitoring devices to a centralized control station side, and performing direct-current system equipment modeling, including direct-current equipment modeling and measurement modeling;
based on a direct current system equipment model, data acquisition and processing are carried out, a direct current power supply system of a transformer substation is monitored in a centralized mode, and direct current system equipment information is displayed according to three dimensions of a centralized control station layer, a transformer substation layer and an equipment component layer;
the centralized control station side triggers the remote capacity checking operation of the storage battery pack, the direct current system online monitoring device starts a capacity checking test, and a discharging process and a charging process are implemented; and the centralized control station side carries out online capturing matching correlation of the charging and discharging events during the core-capacity operation, and generates a storage battery pack remote core-capacity report after the core-capacity operation is finished.
2. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 1, characterized in that:
the centralized control station is communicated with a substation communication gateway machine, or the centralized control station is directly communicated with the direct-current power supply on-line monitoring device, and is used for information processing of uplink and downlink data of the direct-current power supply system through a main substation protocol interface.
3. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 2, characterized in that:
the data acquisition and processing comprises the following steps: remote measurement acquisition quantity, remote signaling acquisition quantity, remote control quantity and remote regulation quantity.
4. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 1, characterized in that:
the centralized control station layer displays the statistical information of the DC system equipment classification of each transformer substation, and the display content comprises an equipment statistical classification pie chart, a tree navigation menu, a charging and discharging event window and equipment alarm real-time information;
monitoring the direct current equipment at the substation level, and displaying a main wiring diagram of a direct current system of the substation, real-time operation information of the direct current system, a charging and discharging event window and real-time equipment alarm information;
the equipment component layer respectively displays the running information of elements of the direct current equipment, and the monitoring comprises storage battery pack intelligent discharge on-line monitoring, storage battery monomer voltage monitoring, storage battery monomer current monitoring, storage battery monomer internal resistance monitoring and storage battery pack insulation on-line monitoring.
5. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 1, characterized in that:
the integrated control station side realizes the discharging control and charging control process of remote core capacity by step operation through a basic remote control function;
the on-line monitoring device of the direct current system aims at a single remote control point to realize remote core capacity starting, discharging control and charging control of the direct current system, the centralized control station side monitors remote signaling states of a charging switch and a discharging switch through an intelligent linkage module, and a linkage strategy is configured to realize a control process of remote core capacity.
6. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 1 or 5, characterized in that:
the remote capacity checking operation of the storage battery pack comprises the following steps:
the centralized control station issues a remote nuclear capacity starting control instruction, and the direct current system online monitoring device starts a nuclear capacity test; the centralized control station side monitors the remote signaling state of the remote nuclear capacity signal in real time, and when the state is changed from a sub-position to a closed position, a discharge test starting instruction is issued to start the discharge of the direct current system; the centralized control station side monitors the remote signaling state of the discharge switch in real time, and when the state is changed from the closed position to the separated position, the representation discharge process is finished; and the centralized control station side issues a charging test starting instruction to start charging the direct-current system, monitors the remote signaling state of the charging switch in real time, and represents that the charging process is finished when the state is from a closed position to a separated position.
7. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 6, characterized in that:
according to the characteristics of the first discharging and recharging events of the remote nuclear capacity, the position state change and the displacement time of a charging switch and a discharging switch of the direct current system are monitored in real time, and the complete remote nuclear capacity events are recorded and stored on the side of the centralized control station through the online capturing and matching association of the discharging process and the charging process, wherein the contents comprise equipment description, a transformer substation, the nuclear capacity starting time, the nuclear capacity ending time, the discharging starting time, the discharging ending time, the discharging duration, the charging starting time, the charging ending time and the charging duration.
8. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 7, characterized in that:
the on-line capturing and matching association steps of the charge and discharge events comprise (1) storage battery pack remote capacity checking operation, (2) reading a direct current system equipment model and real-time data, (3) monitoring the discharge events in real time, judging the matching association and recording the starting time and the ending time of the discharge events, (4) monitoring the charge events in real time, matching association and recording the starting time and the ending time of the charge events, (5) performing the discharge event charging event correlation matching in a single remote capacity checking process, if the discharge event charging event correlation matching does not meet the event characteristics, not recording the single remote capacity checking event, (6) associating measurement data, and automatically generating a storage battery pack remote capacity checking report.
9. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 1 or 8, characterized in that:
the remote kernel-content automatic report comprises the following steps: according to the charge event and the discharge event of the on-line captured storage battery pack remote capacity checking process, the process data of the capacity checking test is automatically correlated, the discharge curve and the discharge curve are drawn according to the rule correlation data, the capacity checking report is automatically generated according to the report style template, the content of the capacity checking report comprises basic information, discharge chart data and charge chart data, the chart data comprises a storage battery pack terminal voltage curve, a storage battery pack current curve, a storage battery pack capacity curve, storage battery monomer voltage and current list data and a battery voltage histogram, and the method has the function of report export printing.
10. The centralized monitoring and remote capacity checking method for the substation direct-current power supply system on the centralized control station side according to claim 1, characterized in that:
further comprising: the remote operation and automatic report form of the storage battery internal resistance test are realized by utilizing the basic remote operation function of the centralized control station side, the remote operation of the storage battery internal resistance test is realized, the starting time and the ending time events of the internal resistance test are recorded, the internal resistance test report is automatically generated by associating test data according to a report template, the internal resistance test report content comprises basic information and an internal resistance histogram, and the report export and printing function is realized.
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| CN118112437A (en) * | 2024-03-07 | 2024-05-31 | 铁塔能源有限公司 | Nuclear capacity assessment method and device for storage battery, electronic equipment and storage medium |
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