An energy storage power station operation control system

Abstract

The present invention provides an energy storage power station operation control system, including: multiple energy storage distribution areas, information switches and battery control platform; multiple battery compartments, BMS modules and communication modules are arranged in the energy storage cabinet; the BMS modules are respectively connected to each battery monitoring module for communication to obtain working voltage and temperature information; the power supply monitoring terminal respectively obtains the distribution status information of the switch cabinet, ring network cabinet and distribution box, and is also connected to the BMS module for communication, and sends the obtained information to the battery control platform through the information switch; the battery control platform stores and displays the received working voltage, temperature information and distribution status information, and also compares the received information with the corresponding threshold value, and issues an alarm if abnormal information occurs. The system can effectively monitor the operating status of the energy storage distribution area, and ensure the stable operation of the energy storage power station based on data analysis.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy storage battery compartments, and in particular relates to an energy storage power station operation control system. Background Art

[0002] With the rapid development of renewable energy and the continuous growth of electricity demand, energy storage power stations, as an important part of the power grid, are expanding in construction and operation. By storing and releasing electrical energy, energy storage power stations can play a role in peak load shifting and valley filling when there is an imbalance in power supply and demand, and improve the stability and reliability of the power grid.

[0003] In the current operation and control of energy storage power stations, due to the large scale of energy storage power stations, including multiple energy storage distribution areas, each area contains multiple complex equipment and components, such as energy storage cabinets, switch cabinets, ring network cabinets, etc., which makes comprehensive monitoring of energy storage power stations particularly difficult. Traditional methods are difficult to capture changes in equipment status in real time, which can easily lead to untimely fault detection and affect the safe and stable operation of energy storage power stations. Moreover, as a core component, the working status of the battery pack in the energy storage power station directly affects the efficiency and safety of energy storage. However, the number of battery packs is large and scattered, and traditional monitoring methods often cannot achieve accurate monitoring of each battery module, resulting in the inability to timely detect and handle potential battery failures. Summary of the invention

[0004] The present invention provides an energy storage power station operation control system, which can effectively monitor the operation status of the energy storage distribution area and ensure the stable operation of the energy storage power station based on data analysis.

[0005] The system includes: multiple energy storage distribution areas, information switches and battery management and control platforms;

[0006] The energy storage and distribution area is equipped with energy storage cabinets, power supply monitoring terminals, switch cabinets, ring network cabinets and distribution boxes;

[0007] The energy storage cabinet is equipped with multiple battery compartments, BMS modules and communication modules;

[0008] The BMS module communicates with each battery monitoring module to obtain operating voltage and temperature information;

[0009] The power supply monitoring terminal obtains the power distribution status information of the switch cabinet, ring main cabinet and distribution box respectively, and also communicates with the BMS module, and sends the obtained information to the battery management and control platform through the information switch;

[0010] The battery management and control platform stores and displays the received operating voltage, temperature information and power distribution status information, and compares the received information with the corresponding threshold value. If abnormal information occurs, an alarm will be issued.

[0011] Preferably, the energy storage distribution area is also provided with a transformer, an energy storage converter and an AC switch cabinet;

[0012] The energy storage cabinet is connected to the power grid through the energy storage converter, AC switch cabinet, transformer and switch cabinet in sequence;

[0013] The energy storage converter adopts grid voltage-oriented vector control.

[0014] Preferably, the battery management and control platform is connected to the energy storage converter by communication to achieve closed-loop control of the converter output active power and closed-loop control of the output reactive power.

[0015] Preferably, the BMS module calculates the thermal load information of the energy storage cabinet based on the following formula, and uploads the thermal load information of the energy storage cabinet to the battery management and control platform;

[0016] Q=Q1-Q2-Q3+Q4-Q5;

[0017] Among them, Q1 is the heat generated by the battery, Q2 is the convection heat transfer of the container, Q3 is the radiation heat dissipation, Q4 is the solar radiation heat, and Q5 is the heat absorbed by the battery body.

[0018] Preferably, the battery management and control platform supports remote signal control of the on / off actions of switch cabinets, ring network cabinets and distribution boxes;

[0019] Define the switch state quantity to be represented by binary numbers, and display the corresponding wiring diagrams of the switch cabinet, ring network cabinet and distribution box on the display interface;

[0020] After the control command is issued, determine whether the feedback information after the action is received within the preset time;

[0021] The battery management and control platform supports pre-defining the locking conditions for remote control operation for each control object in the database;

[0022] Analyze the equipment operation status through network topology to constrain the dispatcher's safe operation; it has an anti-mistaken locking function for switch operation.

[0023] Preferably, the battery management and control platform is equipped with a system fault recall human-machine interface, which supports the selection of any time period as the start time of the inversion and supports fast forward and slow forward of the inversion process;

[0024] The battery management and control platform is equipped with an information query operation human-machine interface, which displays system historical information in the form of curves or reports;

[0025] Support querying historical information, real-time statistics, and historical statistics by date, type, and power equipment hierarchy in the form of tables and curves;

[0026] Supports users to add, delete and modify historical instantaneous information and historical event information.

[0027] Preferably, the switch cabinet has built-in contactors, circuit breakers, and fast fuses;

[0028] A contactor is provided in the battery cluster power supply circuit, and the BMS module is electrically connected to the coil of the contactor to cut off the battery cluster circuit under an emergency cut-off command.

[0029] Preferably, the battery management and control platform defines the working modes of each energy storage distribution area to include: remote control operation mode, local mode, planned value operation mode, and exit operation mode;

[0030] In remote control operation mode, the power supply monitoring terminal responds to the dispatching instructions of the battery management and control platform and reasonably distributes the active power target value according to the instructions of the battery management and control platform;

[0031] When the dispatching timeout or disconnection occurs, it will automatically switch to temporary local mode;

[0032] When executing the planned value operation mode, the energy storage distribution area is controlled by reading and entering the preset planned values ​​of the system.

[0033] Preferably, the battery management and control platform is configured with a manual entry interface for planned values, and the manual entry interface for planned values ​​is configured with a dialog box for selecting energy storage distribution areas, a dialog box for setting time periods, a dialog box for the length of time corresponding to the planned values, and a dialog box for data of the type of planned values;

[0034] The battery management and control platform sends the planned value file to the power supply monitoring terminal corresponding to the energy storage distribution area through the 104 protocol file connection method.

[0035] Preferably, the battery management and control platform is configured with an alarm customization interface, an alarm identifier is defined based on the alarm customization interface, and the distinction between alarms and general information is identified based on the alarm identifier;

[0036] Define the alarm type, alarm display information and voice information, storage location of the alarm information, and priority of the alarm information.

[0037] It can be seen from the above technical solutions that the present invention has the following advantages:

[0038] The energy storage power station operation control system provided by the present invention can collect the operating voltage and temperature information of each battery in the energy storage cabinet in real time, as well as the power distribution status information of the switch cabinet, ring network cabinet and distribution box. It ensures the accuracy and timeliness of the data, and guarantees the stable operation of the energy storage power station based on data analysis.

[0039] The battery management and control platform not only stores and displays all kinds of information received, but also performs intelligent analysis of the information. By comparing the actual data with the preset threshold, the system can promptly detect abnormal information, such as excessive battery voltage, abnormal temperature, or abnormal power distribution status. Problems can be discovered and solved in advance to avoid the expansion of faults and reduce operation and maintenance costs.

[0040] The present invention can significantly improve the operation and maintenance efficiency by centrally monitoring and managing the operation status of the energy storage power station. The operation and maintenance personnel can understand the operation status of the power station in real time, quickly locate and handle faults. It can also reduce the occurrence of human operation errors and safety accidents to a certain extent, and improve the overall safety of the power station. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solution of the present invention, the accompanying drawings required for use in the description will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0042] Figure 1 This is a schematic diagram of the energy storage power station operation control system;

[0043] Figure 2 This is a schematic diagram of an implementation example of an energy storage power station operation control system. DETAILED DESCRIPTION

[0044] In the following, various embodiments of the present disclosure will be described more fully. The present disclosure may have various embodiments, and adjustments and changes may be made therein. However, it should be understood that there is no intention to limit the various embodiments of the present disclosure to the specific embodiments disclosed herein, but rather the present disclosure should be understood to cover all adjustments, equivalents and / or alternatives that fall within the spirit and scope of the various embodiments of the present disclosure.

[0045] Hereinafter, the terms "include" or "may include" used in various embodiments of the present disclosure indicate the presence of disclosed functions, operations, or elements, and do not limit the addition of one or more functions, operations, or elements. In addition, as used in various embodiments of the present disclosure, the terms "include", "have", and their cognates are intended only to indicate specific features, numbers, steps, operations, elements, components, or a combination of the foregoing, and should not be understood as first excluding the presence of one or more other features, numbers, steps, operations, elements, components, or a combination of the foregoing or the possibility of adding one or more features, numbers, steps, operations, elements, components, or a combination of the foregoing.

[0046] In various embodiments of the present disclosure, the expression "or" or "at least one of A or / and B" includes any combination or all combinations of the words listed at the same time. For example, the expression "A or B" or "at least one of A or / and B" may include A, may include B, or may include both A and B.

[0047] The term "user" used in various embodiments of the present disclosure may refer to a monitoring personnel, an operator, etc. who uses the energy storage power station operation management and control system of the present application.

[0048] The terms used in the various embodiments of the present disclosure are only used for the purpose of describing specific embodiments and are not intended to limit the various embodiments of the present disclosure. As used herein, the singular form is intended to also include the plural form, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as the meanings commonly understood by ordinary technicians in the field to which the various embodiments of the present disclosure belong. The terms (such as the terms defined in the generally used dictionary) will be interpreted as having the same meaning as the contextual meaning in the relevant technical field and will not be interpreted as having an idealized meaning or an overly formal meaning, unless clearly defined in the various embodiments of the present disclosure.

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] See also Figure 1 The figure is a schematic diagram of an energy storage power station operation control system in a specific embodiment, the system includes: multiple energy storage distribution areas, an information switch and a battery control platform.

[0051] The battery management and control platform involved in this embodiment is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the embodiments of the present application described and / or required herein.

[0052] The energy storage and distribution area is equipped with energy storage cabinets, power supply monitoring terminals, switch cabinets, ring network cabinets and distribution boxes.

[0053] The energy storage cabinet is equipped with multiple battery compartments, BMS modules and communication modules; the BMS modules are respectively connected to each battery monitoring module to obtain the working voltage and temperature information; the power supply monitoring terminal respectively obtains the power distribution status information of the switch cabinet, ring network cabinet and distribution box, and is also connected to the BMS module, and sends the obtained information to the battery management and control platform through the information switch; the battery management and control platform stores and displays the received working voltage, temperature information and power distribution status information, and compares the received information with the corresponding threshold value. If abnormal information is found, an alarm prompt is issued.

[0054] It should be noted that the wireless Internet access technologies involved in the battery management and control platform, information switch, BMS module and power supply monitoring terminal may include wireless local area networks (Wi-Fi, WLAN, Wireless Local Area Networks), wireless broadband (Wibro), Worldwide Interoperability for Microwave Access (Wimax), High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access), etc.

[0055] The system also supports information access and forwarding functions of dispatching data networks, optical fibers, carriers, wireless private networks, and multiple communication methods such as GPRS, CDMA, and 5G. It supports various transmission protocols to communicate with energy storage station equipment. The protocol library includes: IEC101 / 104, 61850, MODBUS, etc. The data format includes analog quantity, digital quantity, electric energy, SOE and other information.

[0056] In some embodiments, the BMS module is a bridge between the battery compartment and external equipment, real-time acquisition, processing, and storage of important information during the operation of the battery pack, and external information exchange with the energy storage converter and energy management system to achieve real-time alarm and protection in the battery operation project. A UPS power supply is installed in the energy storage cabinet, which can maintain the system monitoring operation for a period of time when the power grid is out of power.

[0057] For example, the parameters of the battery cluster are shown in Table 1.

[0058] Table 1

[0059]

[0060] In some embodiments, in order to monitor the battery compartment data in an all-round manner, the battery cluster has a separate voltage collection sensor, multiple temperature collection points can be set, and the BMS module can collect voltage, temperature and other data.

[0061] In an exemplary embodiment, the battery compartment generates heat during operation. If the heat is not dissipated in time or the heat dissipation consistency is poor, it will cause heat accumulation or excessive temperature difference in the battery cell, thereby affecting the battery operation safety and accelerating the battery capacity decay.

[0062] When the battery compartment is in a low temperature environment, the low temperature will reduce the power and capacity of charging and discharging. Therefore, it is necessary to carry out thermal management design of the energy storage system so that the energy storage system can operate within a certain temperature range.

[0063] In some embodiments, the BMS module calculates the thermal load information of the energy storage cabinet based on the following formula, and uploads the thermal load information of the energy storage cabinet to the battery management and control platform; Q=Q1-Q2-Q3+Q4-Q5.

[0064] Among them, Q1 is the heat generated by the battery, Q2 is the convection heat transfer of the container, Q3 is the radiation heat dissipation, Q4 is the solar radiation heat, and Q5 is the heat absorbed by the battery body.

[0065] In some specific embodiments, a battery liquid cooling device is provided in the energy storage distribution area, and the battery liquid cooling device includes: a liquid cooling unit and a liquid cooling pipeline, which are distributed inside the battery compartment. In order to ensure that the operation of the battery liquid cooling device meets the actual requirements on site, the functional parameters of the battery liquid cooling device are described, mainly as follows: The battery liquid cooling device has a refrigeration function, and can achieve constant temperature control of the coolant through self-regulation. The temperature adjustment range is 18°C~23°C, and the temperature control accuracy is ±2°C. The battery liquid cooling device also has a heating function, and can achieve coolant control through self-regulation. The temperature adjustment range is 18°C~30°C, and the temperature control accuracy is ±2°C.

[0066] It should be noted that a 50% ethylene glycol deionized water solution can be used to ensure that freezing does not occur at the designed ambient temperature.

[0067] The battery liquid cooling device adopts CAN communication protocol and BMS module, and the battery liquid cooling device control directly receives the BMS signal; in the event of BMS signal interruption, the liquid cooling system is automatically controlled to ensure that the coolant temperature is maintained within the preset temperature threshold range.

[0068] In some embodiments, the BMS module controls the charging and discharging process of the battery cluster by collecting and monitoring parameters such as voltage, current, temperature, and SOC, thereby protecting the battery cluster and improving the comprehensive application efficiency of the battery cluster.

[0069] It should be noted that the battery compartment is also equipped with a battery monitoring circuit (BMU), a battery management unit (BCU), a high-voltage line control unit, an energy storage cabinet pre-charging circuit, a high-voltage detection unit, a thermal management unit, a current detection unit, an emergency stop unit, etc.

[0070] The BMS module communicates with the battery monitoring circuit (BMU), battery management unit (BCU), high-voltage line control unit, energy storage cabinet pre-charging circuit, high-voltage detection unit, thermal management unit, current detection unit, and emergency stop unit through the CAN bus to monitor the battery operating status and send alarm information to the battery management and control platform, and receive the operation instructions issued by the battery management and control platform in real time. It can automatically perform high-voltage and thermal management, and coordinate the automatic balancing function of the entire battery cabinet.

[0071] According to the embodiment of the present application, the battery monitoring circuit (BMU) is used to detect the single cell voltage and temperature of the battery in the battery module, alarm the abnormal voltage and temperature status of the single cell, and send the relevant voltage information, temperature information and alarm information to the BMS module. When the voltage of each battery in the battery module is inconsistent, the BMS module can use the internal balancing circuit to balance the single cell or discharge the single cell to keep the voltage of the entire battery pack consistent, thereby improving the output energy and cycle life of the battery pack.

[0072] According to the embodiments of the present application, the switch cabinet has built-in contactors, circuit breakers, and fast fuses. A contactor is equipped in the battery cluster power supply circuit to ensure that under the emergency cut-off command of the BMS module, the live circuit of the battery cluster can be safely and quickly cut off during charging or discharging to ensure the safety of the battery cluster. The circuit breaker can be directly disconnected manually in an emergency and during later maintenance, playing the role of a switch circuit, with good simplicity and safety; the fast fuse can ensure that the ground circuit is quickly cut off when a short circuit or high current occurs in the battery cluster circuit, ensuring the safety of the battery cluster.

[0073] In some embodiments, Figure 2 As shown, the energy storage distribution area is also provided with a transformer 4, an energy storage converter 2 and a switch cabinet 5; the energy storage cabinet 1 is connected to the power grid 6 through the energy storage converter 2, the AC switch cabinet 3, the transformer 4 and the switch cabinet 5 in sequence; the energy storage converter 2 adopts grid voltage-oriented vector control.

[0074] Optionally, the energy storage converter realizes bidirectional charging and discharging functions, and can work in active inverter mode to realize DC to AC conversion and transmit electric energy to the grid; it can also work in active rectification mode to realize AC to DC conversion and absorb electric energy from the grid and store it in the battery.

[0075] The energy storage converter adopts grid voltage-oriented vector control to achieve orthogonal decoupling of active and reactive power and decoupling control of power. At the same time, according to the instantaneous power theory, instantaneous control of active and reactive power is also achieved. The output and absorption of active / reactive power can be automatically adjusted according to signals such as the operation control instructions of the energy storage power station monitoring system, and respond quickly and accurately. The energy storage converter has an independent inverter function in the off-grid system, which can output a constant voltage and frequency to provide a stable AC voltage to various load devices. After receiving background or local instructions, the energy storage converter can convert between the grid-connected operation state and the off-grid operation state.

[0076] In some specific embodiments, the battery management and control platform has functions such as real-time data collection and monitoring, automatic charge and discharge control and planning, and system protection, to achieve control and management of local equipment.

[0077] The battery management and control platform is designed in an integrated manner according to the unmanned management mode, and has the characteristics of dual-network monitoring and distributed system structure. On the basis of a unified support platform, it can flexibly expand, integrate and integrate application functions such as energy storage monitoring AGC / AVC control, operation statistics analysis, etc. The realization and use of various application functions have a unified database model, human-computer interaction interface, and can be uniformly maintained.

[0078] Optionally, the battery management and control platform can collect and monitor energy storage cabinets, substations, switch stations, ring network cabinets, distribution boxes and other equipment, and can collect information and monitor and control the entire station energy storage system.

[0079] In some embodiments, the battery management and control platform receives real-time data sent by the energy storage distribution area to achieve complete, high-performance real-time data monitoring and processing. Data processing mainly includes digital quantity processing and analog quantity processing.

[0080] Optionally, analog measurement is to collect and process the voltage, current, active power, reactive power, power factor, main transformer temperature, and even frequency and phase of major equipment such as energy storage stations, substations, switch stations, and distributed power sources.

[0081] The state quantity measurement is based on the position information of access switches, circuit breakers, transformer taps, etc.; small current grounding line selection action signals, synchronous detection position status, DC system fault signals, equipment operation alarm signals, such as low pressure, high oil temperature, low oil level, etc., and feeder fault signals detected by FTU.

[0082] Optionally, remote signaling processing includes:

[0083] 1) The state quantity is represented by a 1-bit binary number, 1 represents closing (action / entry), and 0 represents opening (reset / exit);

[0084] 2) Supports dual-bit remote signal processing and can mark suspicious status for illegal status;

[0085] 3) Supports false remote signal processing and marks the status of jitter remote signals as suspicious;

[0086] 4) Support maintenance status processing, and do not alarm for remote signal changes when the status is maintenance;

[0087] 5) Support manual setting of state quantity;

[0088] 6) All manually set status quantities should be automatically displayed in a list and the corresponding wiring diagram should be called up;

[0089] 7) Supports timing processing of protection signal action. If the protection action fails to reset within a period of time, a timeout alarm will be given.

[0090] As an example, the battery management and control platform also has telemetry capabilities. Telemetry processing includes:

[0091] 1) Provide data validity checking and data filtering;

[0092] 2) Provide zero drift processing function, and the zero drift parameters of analog quantity can be set;

[0093] 3) Provide limit checking function and support different limit values ​​for different time periods;

[0094] 4) Provides a limit check function for the data change rate. When the analog quantity changes over a specified period of time and exceeds a specified threshold, an alarm is given;

[0095] 5) Define and count the real-time maximum, minimum and average values ​​of certain quantities, as well as the time of occurrence, according to user requirements.

[0096] The battery management and control platform judges the collected voltage, current, main transformer temperature, etc., and issues an alarm signal if there is an over-limit; monitors the location information of switches, knife switches, transformer taps, etc.; accesses and displays SOE information, protection signals, anti-theft signals, fire alarm signals, etc. It supports automatic printing and voice output of event information.

[0097] In some embodiments, the battery management and control platform has a control authority function. The operator must have the corresponding operation authority; during the double-seat operation verification, the supervisor must confirm; there are prompts for each step during the operation, and the results of each step have corresponding responses; the operation status of the channel is monitored during the operation; detailed archive information is provided, and the operations are recorded in the history library, including the operator's name, operation object, operation content, operation time, operation results, etc., which can be retrieved and printed.

[0098] In some specific embodiments, the battery management and control platform supports pre-defining locking conditions for remote control operations for each control object in the database, such as the status of related state quantities, the measured values ​​of related analog quantities, etc., and supports a combination of multiple locking conditions; during actual operation, anti-error verification is performed according to the predefined locking conditions. If the verification fails, the operation is prohibited and the cause of the error is prompted.

[0099] In this embodiment, it has a topology anti-error locking function, which does not rely on manual definition. It analyzes the equipment operation status through the network topology to constrain the dispatcher's safe operation; it has the anti-error locking function of switch operation: it has a ring closing prompt, a signboard prompt, a load power failure prompt, a switch closing prompt with grounding, etc.; it has the anti-error locking function of grounding knife switch operation: it has a prompt for closing the grounding knife switch with power on, a prompt for closing the grounding knife switch with the knife switch on, etc.; it has a signboard locking function.

[0100] In an exemplary embodiment, the battery management and control platform is configured with an alarm customization interface, an alarm identifier is defined based on the alarm customization interface, and the distinction between alarms and general information is identified based on the alarm identifier; the alarm type, alarm display information and voice information, the storage location of the alarm information, and the priority of the alarm information are defined.

[0101] Specifically, the distinction between alarms and events can be defined by the user according to actual conditions. Alarms are both displayed in the alarm window and written as events. Events are not displayed in the alarm window, but only written as events. At the same time, alarms are provided with alarm confirmation and alarm suppression mechanisms.

[0102] The battery management and control platform supports users to group alarm display information and alarm voice information according to their habits. For alarm events, they can be stored in separate tables in the real-time database and processed separately in the display interface without affecting each other.

[0103] The alarm / event display window of the battery management and control platform is relatively independent from the graphic screen and can be displayed in split screens. It can be linked according to the alarm object, making it convenient for dispatchers to monitor the alarm and the screen at the same time. The alarm can be used to quickly locate the corresponding equipment object on the graphic, thereby improving the speed of accident handling.

[0104] The alarm types of this embodiment are divided into: stream alarm and replacement alarm. Stream alarm sends and receives alarms in a time sequence in the form of a running account. Replacement alarm generates only one alarm for the same type of alarm for the same object, and the time of the new alarm replaces the time of the previous alarm, that is, only the latest alarm is retained for the same object, avoiding a large number of alarm outputs affecting the attention of important alarms.

[0105] This embodiment can define different display colors and fonts for alarms of different priorities. The colors include foreground color, background color, and flashing foreground color. The colors of alarms of different levels can be different, the colors of abnormal alarms and recovery alarms can also be different, and the colors of unconfirmed and confirmed can also be different. Different display processing is performed on alarms according to their different status and whether they are confirmed or not, so that the most important and most concerned alarms are the most conspicuous.

[0106] As an example, users can choose menus or toolbars according to their operating habits, and toolbars can be displayed / hidden. The system provides a rich human-machine interface, supports the completion of manual setting, listing and delisting, and alarm management operations in human-machine interface mode; supports wiring diagrams, operating diagrams, protection equipment configuration diagrams, telemetering meters, telesignaling meters and other screens. Supports display of all measurement information in different screens; supports flow, coloring, animation, flashing and text alarms; supports historical and real-time trend curves; supports multiple display modes such as bar charts, pie charts, and digital meters.

[0107] The operator interface of the system provides a convenient and fast screen viewing function, mainly including navigation window, magnification window, etc. Clicking the button can easily switch the graphic screen, and the display style of the screen can be flexibly set. The system provides functions such as zoom in, zoom out, and move.

[0108] In some embodiments, the battery management and control platform can display the system status through a graphic browser, and can display real-time data and equipment status: on the screen, the telemeter and telesignal quantities are refreshed once a second. Telesignal position changes and accident position changes are reflected immediately, and the different states of each telemeter or device are distinguished according to the colors in the system color configuration table.

[0109] In the graphic browser, you can query historical data and call out historical data of any period of time. You can also call out the accident section of any accident and perform inversion.

[0110] For network topology, the system can be divided into several disconnected parts according to the status of switches and switches in the diagram, and each part (island) is displayed with a different background color. For the main electrical island, color configuration can be performed for abnormal devices and status. For normal devices in the main electrical island, different voltage levels are displayed in different colors. The network topology function has high requirements for the wiring diagram. Often, the wrong connection when the user draws the diagram can cause the network topology function to fail to reason normally, so users can also use the network topology function to verify the correctness of the wiring diagram.

[0111] This embodiment can classify and statistically display the data, and use intuitive and visual forms such as pie charts, bar charts, graphs, curves, renderings, etc. to display the data.

[0112] The battery management and control platform also has a historical alarm query function, providing queries by type and object. The query results can be printed out and saved as files.

[0113] In some embodiments, when a short circuit or grounding fault occurs in the main equipment of the substation, such as the lines, busbars, switches, etc., or a fault occurs in the main transformer, capacitor, reactor, or other body, or a fault occurs in the feeder, interconnecting switch, distribution transformer, etc., causing the protection and automatic devices to operate, the switch to trip, and the FTU to report fault information, the battery management and control platform can complete the accident record based on the total accident signal and protection action information, FTU, DTU and other fault detection information, and can invert the accident data recorded by the protection device, fault recorder, and FTU / DTU in a single wiring diagram.

[0114] The battery management and control platform can provide a friendly human-machine interface, support the selection of any moment as the start time of the inversion, and support fast forward and slow forward of the inversion process. The battery management and control platform supports the suspension of ongoing accident replays at any time, and can continue or restart other accident replays. System accident recall can be triggered manually, or different analog quantities, digital quantities or their combinations can be selected to form different trigger conditions.

[0115] The battery management and control platform can export historical data as compressed text files for permanent storage, or dump them into a backup database. It supports users to manually delete historical data in batches and manually dump historical data. It supports automatic monitoring, dumping or cleaning of the storage of historical data. The battery management and control platform provides a friendly and convenient human-machine interface to complete the query and display of historical curves or report data and historical event information. It supports querying historical instantaneous data records, real-time statistical data, and historical statistical data in tables and curves by date, type, and hierarchical relationship of power equipment; it supports querying historical event data by category, time, plant station, and object; it supports users to add, delete, and modify historical instantaneous data and historical event information. The modification of historical data is carried out in the form of tables and curves, and strict permission checks and records are required.

[0116] Optionally, the battery management and control platform is a general framework developed based on the characteristics of the energy storage model. The framework uses equipment and measurement as basic objects, and compiles different types of statistical requirements into result tables by day, month, and year. The statistical type is generally a single, easily defined result type data, such as: online power, offline power, power consumption, energy storage power generation rate, etc. Other applications then calculate the final statistical value by sorting, combining, and accumulating the statistical results of the equipment.

[0117] In some specific embodiments, the battery management and control platform has a manual entry interface for planned values, where you can select the corresponding energy storage power station, select different time periods, and enter different types of planned value data according to the time length corresponding to the planned value points. At the same time, the data entry interface can query the planned value according to the selected time period and display it in the form of a curve.

[0118] Optionally, the planned value types include: active power, reactive power, and voltage.

[0119] When importing planned data by the planned value file import method, the file can receive the planned value file through the 104 protocol file connection method. After the planned value file is received, the corresponding energy storage power station can be selected through the planned value file import interface, and the file data to be imported can be parsed according to the time length corresponding to the planned value points, and the data can be parsed and imported according to the selected planned value type.

[0120] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An energy storage power station operation control system, characterized in that: include: Multiple energy storage distribution areas, information switches, and battery management and control platforms; The energy storage and distribution area is equipped with energy storage cabinets, power supply monitoring terminals, switch cabinets, ring network cabinets and distribution boxes; The energy storage cabinet is equipped with multiple battery compartments, BMS modules and communication modules; The BMS module communicates with each battery monitoring module to obtain operating voltage and temperature information; The power supply monitoring terminal obtains the power distribution status information of the switch cabinet, ring main cabinet and distribution box respectively, and also communicates with the BMS module, and sends the obtained information to the battery management and control platform through the information switch; The battery management and control platform stores and displays the received operating voltage, temperature information, and power distribution status information. It also compares the received information with the corresponding thresholds. If abnormal information is found, an alarm will be issued. The battery management and control platform supports remote signal control of switch cabinets, ring network cabinets and distribution boxes. Define the switch state quantity to be represented by binary numbers, and display the corresponding wiring diagrams of the switch cabinet, ring network cabinet and distribution box on the display interface; After the control command is issued, determine whether the feedback information after the action is received within the preset time; The battery management and control platform supports pre-defining the locking conditions for remote control operation for each control object in the database; Analyze the equipment operation status through network topology to constrain the dispatcher's safe operation; have the function of preventing wrong locking of switch operation; The battery management and control platform defines the working modes of each energy storage distribution area, including remote control operation mode, local mode, planned value operation mode, and exit operation mode; In remote control operation mode, the power supply monitoring terminal responds to the dispatching instructions of the battery management and control platform and reasonably distributes the active power target value according to the instructions of the battery management and control platform; When the dispatching timeout or disconnection occurs, it will automatically switch to temporary local mode; When executing the planned value operation mode, the energy storage distribution area is controlled by reading the preset planned values ​​entered into the system; The battery management and control platform is equipped with a manual entry interface for planned values. The manual entry interface for planned values ​​is equipped with a dialog box for selecting energy storage distribution areas, a dialog box for setting time periods, a dialog box for the length of time corresponding to the planned value, and a dialog box for the data type of the planned value. The battery management and control platform sends the planned value file to the power supply monitoring terminal corresponding to the energy storage distribution area through the 104 protocol file connection method.

2. The energy storage power station operation control system according to claim 1, characterized in that: The energy storage distribution area is also equipped with transformers, energy storage converters and AC switch cabinets; The energy storage cabinet is connected to the power grid through the energy storage converter, AC switch cabinet, transformer and switch cabinet in sequence; The energy storage converter adopts grid voltage-oriented vector control.

3. The energy storage power station operation control system according to claim 2, characterized in that: The battery management and control platform communicates with the energy storage inverter to achieve closed-loop control of the inverter output active power and closed-loop control of the output reactive power.

4. The energy storage power station operation control system according to claim 1, characterized in that: The BMS module calculates the thermal load information of the energy storage cabinet based on the following formula, and uploads the thermal load information of the energy storage cabinet to the battery management and control platform; Q=Q1-Q2-Q3+Q4-Q5; Among them, Q1 is the heat generated by the battery, Q2 is the convection heat transfer of the container, Q3 is the radiation heat dissipation, Q4 is the solar radiation heat, and Q5 is the heat absorbed by the battery body.

5. The energy storage power station operation control system according to claim 1, characterized in that: The battery management and control platform is equipped with a system fault recall human-machine interface, which supports the selection of any time period as the start time of the inversion, and supports fast forward and slow forward of the inversion process; The battery management and control platform is equipped with an information query operation human-machine interface, which displays system historical information in the form of curves or reports; Support querying historical information, real-time statistics, and historical statistics by date, type, and power equipment hierarchy in the form of tables and curves; Supports users to add, delete and modify historical instantaneous information and historical event information.

6. The energy storage power station operation control system according to claim 1, characterized in that: The switch cabinet has built-in contactors, circuit breakers, and fast fuses; A contactor is provided in the battery cluster power supply circuit, and the BMS module is electrically connected to the coil of the contactor to cut off the battery cluster circuit under an emergency cut-off command.

7. The energy storage power station operation control system according to claim 1, characterized in that: The battery management and control platform is equipped with an alarm customization interface, based on which the alarm identifier is defined, and the distinction between alarms and general information is identified based on the alarm identifier; Define the alarm type, alarm display information and voice information, storage location of the alarm information, and priority of the alarm information.

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