Verification system for operation control of energy storage power station based on real energy storage unit
The verification system based on physical energy storage units has solved the verification challenge of the EMS (Energy Management System) for large-scale battery energy storage power stations, enabling the scientific design and efficient operation of energy storage power stations and reducing construction risks.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 周锡卫
- Filing Date
- 2020-07-16
- Publication Date
- 2026-07-28
AI Technical Summary
Existing technologies cannot effectively verify the operation and control system (EMS) of large-scale battery energy storage power stations, leading to blind spots and investment losses during the construction process.
A verification system based on physical energy storage units is adopted. By connecting the physical energy storage unit system with the simulated energy storage unit system, real-time operating parameters are obtained, and dynamic correction and strategy optimization are performed using the data processing module to verify the applicability and effectiveness of EMS.
It provides a scientific basis to ensure the successful integration and optimized control of energy storage power stations, reduce blind construction, and lower investment losses.
Smart Images
Figure CN113945850B_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of battery energy storage system technology, specifically relating to a verification system for the operation control of an energy storage power station based on physical energy storage units. Background Technology
[0002] The application of battery energy storage power stations in power grid systems is beneficial to the stable operation of the grid and improves its flexibility. This has led to the development of large-scale battery energy storage power station systems. Due to the large scale of these systems, requiring hundreds of thousands, millions, or even tens of millions of individual batteries, they are currently mainly constructed by forming multiple independently controllable energy storage unit systems. Each energy storage unit system consists of batteries and connected battery strings, battery management units, battery cluster control units, battery management systems (BMS), energy storage power station energy management systems (EMS), and energy storage PCS, all designed, configured, selected, and electrically connected. Through real-time information exchange among the functional components and under the effective control of the energy storage power station's operating strategy (EMS), charging and discharging are regulated to achieve the target effect of the energy storage system. However, facing massive amounts of real-time data and the monitoring and control of controlled objects, how to ensure the effectiveness and feasibility of the design scheme? How to ensure that the energy storage power station's operating control system (EMS) can meet the design requirements for stable and efficient system operation? These are necessary conditions for project investment and for the system to achieve its target effect. However, before constructing battery energy storage power stations, especially large-scale ones, the industry cannot know whether the design scheme, equipment configuration, and connection integration of the energy storage power station can operate stably and meet the design requirements. It is also impossible to determine whether the energy storage power station's operating control system (EMS) has the timeliness to process massive amounts of data in real time. As a result, it is impossible to guarantee that the energy storage power station project can achieve the design goals and operate safely and normally after completion. Therefore, it is inevitable that the project system cannot be put into operation on schedule and will cause losses to investors.
[0003] The Operation and Control System (EMS) of an energy storage power station is a key technology and equipment for energy storage power station systems. Currently, the industry lacks the tools and methods to conduct large-scale experiments and verifications of the EMS of energy storage power stations. The effect of pure software simulation is too far from the actual system operation, which cannot meet the needs of energy storage power station system design and EMS product selection and evaluation. This results in a lack of scientific basis for energy storage power station investment and construction, leading to blind investment and inevitably causing the investment results to fail to meet the expected goals. Summary of the Invention
[0004] To address the challenge of experimentally verifying the effectiveness of energy storage power station system design schemes and the operational control system (EMS) of energy storage power stations, especially large-scale GW-level systems, before construction, this invention proposes a verification system for the operation control of energy storage power stations based on physical energy storage units. The system is characterized by selecting a physical energy storage unit system from the energy storage power station design scheme to be verified and connecting it to a first simulated energy storage unit system, a second simulated energy storage unit system, and an nth simulated energy storage unit system according to the design scheme's connection method. A data processing, generation, and assignment module connects to the physical energy storage PCS and the physical BMS system respectively via energy storage unit data communication lines to acquire the real-time operating parameters of the batteries and battery strings of the physical energy storage unit system and the energy storage PCS. Simultaneously, the data processing, generation, and assignment module identifies and processes the corresponding parameters and distributes them via assignment communication lines to the first unit system simulated energy storage PCS and the first unit system simulated battery cluster control unit module constituting the first simulated energy storage unit system, and the second unit system simulated energy storage PCS and the second unit system simulated battery cluster control unit module constituting the second simulated energy storage unit system. The battery cluster control unit module, the nth unit system simulated energy storage PCS constituting the nth simulated energy storage unit system, and the nth unit system simulated battery cluster control unit module serve as the benchmark reference data for simulation operation. Dynamic correction is performed using preset operating error variation coefficients to obtain synchronous simulation sampling data of all batteries and battery strings in the real-time simulated energy storage power station. The operating control system EMS to be verified is connected to the first battery management system (BMS), the second battery management system (BMS), the nth battery management system (BMS), and the first, second, and nth unit system simulated energy storage PCS via the simulated energy storage power station system communication line. Simultaneously, the operating control system EMS to be verified controls the charging and discharging of the physical energy storage PCS via the energy storage unit data communication line. This tests the benchmark real-time parameters of battery changes generated by the operating control strategies under different operating conditions, as well as the timeliness and energy management effect of the response and controlled operation of each device in the energy storage power station system. The results are compared with the design indicators of the design scheme to complete the evaluation and verification. Furthermore, the system scheme and operating control strategy are improved through strategy optimization and adjustment experiments.
[0005] The verification system for the operation control of the energy storage power station based on physical energy storage units is characterized in that the data processing, generation and assignment module is a functional module with embedded computer and program for data processing and communication management, and has data storage and multiple communication interfaces.
[0006] The verification system for the operation control of an energy storage power station based on physical energy storage units is characterized in that the first battery management system (BMS), the second battery management system (BMS), and the nth battery management system (BMS) are respectively connected to the first unit system simulated energy storage PCS and the first unit system simulated battery cluster control unit module, the second unit system simulated energy storage PCS and the second unit system simulated battery cluster control unit module, and the nth unit system simulated energy storage PCS and the nth unit system simulated battery cluster control unit module, respectively constituting the first simulated energy storage unit system, the second simulated energy storage unit system, and the nth simulated energy storage unit system.
[0007] The verification system for the operation control of an energy storage power station based on physical energy storage units is characterized in that the physical BMS system is connected to the physical energy storage PCS via a physical BMS communication line, and is respectively connected to the first physical battery cluster control unit module, the i-th physical battery cluster control unit module, and each physical battery cluster control unit module via a BMS string communication line. The first physical battery cluster control unit module is connected to the first battery management unit module of the first battery pack, which is connected to each battery in the first battery pack via a sampling harness, and the second battery management unit module of the second battery pack, which is connected to each battery in the second battery pack via a sampling harness via a first string communication line. The m-th battery management unit module and the i-th physical battery cluster control unit module are connected to each battery in the m-th battery pack via sampling harnesses. They are respectively connected to the i-th battery management unit module in the i-th battery pack via sampling harnesses, the i-th battery management unit module in the i-th battery pack via sampling harnesses, and the i-th battery management unit module in the i-th battery pack via sampling harnesses. This forms the real-time monitoring and sampling path of all cells in the physical energy storage unit system and constitutes the battery management system of the physical energy storage unit system.
[0008] The verification system for the operation control of an energy storage power station based on physical energy storage units is characterized in that the first unit system simulates energy storage PCS, the second unit system simulates energy storage PCS, and the nth unit system simulates energy storage PCS are equipped with embedded computers and program function modules, have conventional communication protocols, and respectively receive and execute charging and discharging control commands from the EMS to be verified operation control system, simulate the time cycle, power, and temperature characteristics of the actual energy storage PCS equipment of the design specifications, and generate and transmit the input and output electrical characteristic parameters of the energy storage PCS in real time.
[0009] The verification system for the operation control of an energy storage power station based on physical energy storage units is characterized in that the first unit system simulated battery cluster control unit module, the second unit system simulated battery cluster control unit module, and the nth unit system simulated battery cluster control unit module are equipped with embedded computers and programs, and each has a corresponding physical battery cluster control unit module, a battery management unit module, and a parameter storage unit corresponding to each sampled battery. They receive the battery parameters of the physical energy storage unit system in real time obtained through the data processing and generation and assignment module, and perform dynamic correction with the preset operation error change coefficient to obtain personalized synchronous sampling parameters of all batteries and battery strings of the energy storage power station in real time simulation. The parameters are refreshed and stored in real time according to the set time rhythm, and the system is configured with the same communication protocol and communication interface as the physical battery cluster control unit module.
[0010] The verification system for the operation control of an energy storage power station based on physical energy storage units is characterized in that the operation control system EMS to be verified, as well as the first battery management system (BMS), the second battery management system (BMS), and the nth battery management system (BMS), adopt the design configuration and connection method of the energy storage power station design scheme, and are installed and connected to be integrated in the operating environment of the physical energy storage unit system, thus forming an energy storage power station empirical platform system for the operational environment adaptability test and verification working condition scenario of the operation control system EMS and the battery management system BMS to be verified.
[0011] This invention employs a prototype physical battery energy storage unit system consistent with the design scheme and multiple simulated energy storage unit systems of the same scale as the target energy storage power station, all connected and installed in the operating environment of the prototype physical energy storage unit system according to the design scheme. Through the control and operation of the prototype physical energy storage unit system under different scenarios, real-time battery and energy storage system parameters are obtained during operation. The invention verifies the control strategy designed by the operation control system (EMS) based on application requirements to regulate the charging and discharging of each energy storage unit system. This experiment verifies the feasibility of the design scheme and the applicability and effectiveness of the EMS under various operating conditions, providing a valid scientific basis for the design and construction of large-scale battery energy storage power stations. It also provides experimental verification tools for the successful integration and optimized control of energy storage power stations, reducing the blind spots in energy storage power station construction and minimizing investment losses. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of an energy storage power station operation control verification system based on physical energy storage units and its structure. Detailed Implementation
[0013] As an example, a verification system for the operation control of an energy storage power station based on physical energy storage units is described in conjunction with the accompanying drawings. However, the described embodiments are only a portion, not all, of the embodiments of the present invention applied to the verification system for the operation control of an energy storage power station based on physical energy storage units. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. The technology and solutions of the present invention are not limited to the content given in this example.
[0014] like Figure 1As shown, the verification system for the operation control of an energy storage power station based on physical energy storage units is characterized in that, in the configuration of the energy storage power station design scheme to be verified, a physical energy storage unit system (1) is selected and connected with the first simulated energy storage unit system (110), the second simulated energy storage unit system (120), and the nth simulated energy storage unit system (1n0) according to the connection method of the design scheme. The data processing, generation and assignment module (8) is connected to the physical energy storage PCS (10) and the physical BMS system (5) respectively through the energy storage unit data communication line (6) to obtain the battery and battery of the energy storage unit system. The real-time operating parameters of the string and energy storage PCS are simultaneously processed by the data processing and generation and assignment module (8), which identifies and distributes the corresponding parameters through the assignment communication line (81) to the first unit system simulated energy storage PCS (11) and the first unit system simulated battery cluster control module (411) constituting the first simulated energy storage unit system (110), the second unit system simulated energy storage PCS (12) and the second unit system simulated battery cluster control module (421) constituting the second simulated energy storage unit system (120), and the nth unit system constituting the nth simulated energy storage unit system (1n0). The simulated energy storage PCS (1n) and the nth unit system simulated battery cluster control unit module (4n1) serve as the reference data for simulation operation and are dynamically corrected in conjunction with the preset operating error variation coefficient to obtain the synchronous simulation sampling data of all batteries and battery strings of the energy storage power station in real-time simulation operation. The operation control system EMS (9) to be verified is connected to the first battery management system BMS (51), the second battery management system BMS (52), the nth battery management system BMS (5n), and the first unit system simulated energy storage PC through the simulated energy storage power station system communication line (91). S(11), the second unit system simulated energy storage PCS(12), the nth unit system simulated energy storage PCS(1n), and the operation control system EMS(9) to be verified control the physical energy storage PCS(10) to charge and discharge through the energy storage unit data communication line(6), test the benchmark real-time parameters of battery changes generated by the operation control strategy under different working conditions, as well as the timeliness of response and controlled operation of each device in the energy storage power station system and the energy management effect, and compare them with the design indicators of the design scheme to complete the evaluation and verification. At the same time, the system scheme and operation control strategy are improved through strategy optimization and adjustment tests.
[0015] The verification system for the operation control of the energy storage power station based on physical energy storage units is characterized in that the data processing, generation and assignment module (8) is a data processing and communication management functional module with an embedded computer and program, and has data storage and multiple communication interfaces.
[0016] The verification system for the operation control of the energy storage power station based on physical energy storage units is characterized in that the first battery management system (BMS) (51), the second battery management system (BMS) (52), and the nth battery management system (BMS) (5n) are respectively connected to the first unit system simulated energy storage PCS (11) and the first unit system simulated battery cluster control unit module (411), the second unit system simulated energy storage PCS (12) and the second unit system simulated battery cluster control unit module (421), and the nth unit system simulated energy storage PCS (1n) and the nth unit system simulated battery cluster control unit module (4n1) of their respective unit systems, thereby constituting the first simulated energy storage unit system (110), the second simulated energy storage unit system (120), and the nth simulated energy storage unit system (1n0).
[0017] The verification system for the operation control of the energy storage power station based on physical energy storage units is characterized in that the physical BMS system (5) is connected to the physical energy storage PCS (10) through a physical BMS communication line, and is connected to the first physical battery cluster control unit module (41) and the i-th physical battery cluster control unit module (4i) through a BMS string communication line (7). The first physical battery cluster control unit module (41) is connected to the first battery management unit module (301) of the first battery PACK (201) and the second battery management unit module (302) of the second battery PACK (202) through a sampling harness via a first string communication line (31). The m-th battery management unit module (30m) and the i-th physical battery cluster control unit module (4i) of each battery in the m-th battery PACK (20m) are connected via sampling harnesses. They are then connected via the i-th serial communication line (3i) to the i1-th battery management unit module (3i1) of each battery in the i1-th battery PACK (2i1), the i2-th battery management unit module (3i2) of each battery in the i2-th battery PACK (2i2), and the im-th battery management unit module (3im) of each battery in the im-th battery PACK (2im). This forms the path for real-time monitoring and sampling of all cells in the physical energy storage unit system and constitutes the battery management system of the physical energy storage unit system.
[0018] The verification system for the operation control of the energy storage power station based on physical energy storage units is characterized in that the first unit system simulated energy storage PCS (11), the second unit system simulated energy storage PCS (12), and the nth unit system simulated energy storage PCS (1n) are equipped with embedded computers and program function modules, have conventional communication protocols, and respectively accept and execute the charging and discharging control commands of the operation control system EMS (9) to be verified, simulate the time cycle and power and temperature characteristics of the actual energy storage PCS equipment of the design specifications, and generate and transmit the input and output electrical characteristic parameters of the energy storage PCS in real time.
[0019] The verification system for the operation control of the energy storage power station based on physical energy storage units is characterized in that the first unit system simulated battery cluster control unit module (411), the second unit system simulated battery cluster control unit module (421), and the nth unit system simulated battery cluster control unit module (4n1) are equipped with embedded computers and programs and respectively have corresponding physical battery cluster control unit modules and battery management unit modules (301) and parameter storage units corresponding to each sampled battery. They receive the battery parameters of the physical energy storage unit system in real time obtained through the data processing and generation and assignment module (8), and perform dynamic correction with the preset operation error change coefficient to obtain personalized synchronous sampling parameters of all batteries and battery strings of the energy storage power station in real time simulation operation. They are refreshed and stored in real time according to the set time rhythm, and are configured with the same communication protocol and communication interface as the physical battery cluster control unit module.
[0020] The verification system for the operation control of the energy storage power station based on physical energy storage units is characterized in that the operation control system EMS (9) to be verified, as well as the first battery management system BMS (51), the second battery management system BMS (52), and the nth battery management system BMS (5n), adopt the design configuration and connection method of the energy storage power station design scheme, and are installed and connected to be integrated in the operating environment of the physical energy storage unit system, thus forming an energy storage power station empirical platform system for the operating environment adaptability test and verification working condition scenario of the operation control system EMS and the battery management system BMS to be verified.
[0021] This invention employs a prototype physical battery energy storage unit system consistent with the design scheme and multiple simulated energy storage unit systems of the same scale as the target energy storage power station, all connected and installed in the operating environment of the prototype physical energy storage unit system according to the design scheme. By controlling the operation of the prototype physical energy storage unit system under different scenarios, the operating control system (EMS) to be verified acquires the battery and energy storage system parameters provided in real time during the operation of the energy storage system, and controls and regulates the charging and discharging of each energy storage unit system according to the control strategy designed according to application requirements. This experiment verifies the feasibility of the design scheme and the applicability and effectiveness of the operating control system (EMS) under various operating conditions, providing effective scientific basis for the design and construction of large-scale battery energy storage power stations, providing experimental verification tools for the successful integration and optimized control of energy storage power stations, reducing the blind spots in energy storage power station construction and reducing investment losses.
Claims
1. A verification system for the operation control of an energy storage power station based on physical energy storage units, characterized in that, In the energy storage power station design configuration to be verified, a physical energy storage unit system (1) is selected and connected to the first simulated energy storage unit system (110), the second simulated energy storage unit system (120), and the nth simulated energy storage unit system (1n0) according to the connection method of the design scheme. The data processing and generation and assignment module (8) is connected to the physical energy storage PCS (10) and the physical BMS system (5) respectively through the energy storage unit data communication line (6) to obtain the real-time operating parameters of the battery and battery string of the energy storage unit system and the energy storage PCS. At the same time, the data processing and generation module (8) is used to obtain the real-time operating parameters of the battery and battery string of the energy storage unit system and the energy storage PCS. The assignment module (8) identifies and processes the corresponding parameters and distributes them via the assignment communication line (81) to the first unit system simulation energy storage PCS (11) and the first unit system simulation battery cluster control unit module (411) constituting the first simulation energy storage unit system (110), the second unit system simulation energy storage PCS (12) and the second unit system simulation battery cluster control unit module (421) constituting the second simulation energy storage unit system (120), and the nth unit system simulation energy storage PCS (1n) and the nth unit system simulation battery cluster control unit module (421) constituting the nth simulation energy storage unit system (1n0). The battery cluster control unit module (4n1) of the subsystem is used as the reference data for simulation operation and is dynamically corrected in conjunction with the preset operation error change coefficient to obtain the synchronous simulation sampling data of all batteries and battery strings of the energy storage power station in real-time simulation operation. The operation control system (9) to be verified is connected to the first battery management system (BMS) (51), the second battery management system (BMS) (52), the nth battery management system (BMS) (5n), and the first unit system simulation energy storage PCS (11) and the second unit system simulation energy storage PCS (12) through the simulated energy storage power station system communication line (91). The system simulates the energy storage PCS (12) of the 2nd unit system and the energy storage PCS (1n) of the nth unit system. At the same time, the operation control system EMS (9) to be verified controls the physical energy storage PCS (10) to charge and discharge through the energy storage unit data communication line (6). The system tests the benchmark real-time parameters of battery changes caused by the operation control strategy under different working conditions, as well as the timeliness of response and controlled operation of each device in the energy storage power station system and the energy management effect. The system is evaluated and verified by comparing with the design indicators of the design scheme. At the same time, the system scheme and operation control strategy are improved through strategy optimization and adjustment tests.
2. The verification system for operation control of an energy storage power station based on physical energy storage units according to claim 1, characterized in that, The data processing, generation and assignment module (8) is a functional module with embedded computer and program data processing and communication management, and has data storage and multiple communication interfaces.
3. The verification system for operation control of an energy storage power station based on physical energy storage units according to claim 1, characterized in that, The first battery management system (BMS) (51), the second battery management system (BMS) (52), and the nth battery management system (BMS) (5n) are respectively connected to the first unit system simulated energy storage PCS (11) and the first unit system simulated battery cluster control unit module (411), the second unit system simulated energy storage PCS (12) and the second unit system simulated battery cluster control unit module (421), the nth unit system simulated energy storage PCS (1n) and the nth unit system simulated battery cluster control unit module (4n1), respectively, forming the first simulated energy storage unit system (110), the second simulated energy storage unit system (120), and the nth simulated energy storage unit system (1n0).
4. The verification system for operation control of an energy storage power station based on physical energy storage units according to claim 1, characterized in that, The physical BMS system (5) is connected to the physical energy storage PCS (10) via the physical BMS communication line, and is connected to the first physical battery cluster control unit module (41) and the i-th physical battery cluster control unit module (4i) via the BMS string communication line (7). The first physical battery cluster control unit module (41) is connected to the first battery management unit module (301) of the first battery PACK (201) via the first string communication line (31), the second battery management unit module (302) of the second battery PACK (202) via the sampling wire harness, and the m-th battery PACK via the sampling wire harness. The m-th battery management unit module (30m) of each battery in (20m) and the i-th physical battery cluster control unit module (4i) are respectively connected to the i1-th battery management unit module (3i1) of each battery in the i1-th battery PACK (2i1) via the sampling harness, the i2-th battery management unit module (3i2) of each battery in the i2-th battery PACK (2i2) via the sampling harness, and the im-th battery management unit module (3im) of each battery in the im-th battery PACK (2im) via the sampling harness. This constitutes the real-time monitoring and sampling path of the entire cell of the physical energy storage unit system and forms the battery management system of the physical energy storage unit system.
5. The verification system for operation control of an energy storage power station based on a physical energy storage unit according to claim 1, characterized in that, Unit 1 system simulates energy storage PCS (11), Unit 2 system simulates energy storage PCS (12), and Unit n system simulates energy storage PCS (1n). The PCS is equipped with an embedded computer and program function module, has conventional communication protocol, and accepts and executes the charging and discharging control commands of the EMS (9) operation control system to be verified. It simulates the time cycle, power and temperature characteristics of the actual energy storage PCS equipment in the design specifications, and generates and transmits the input and output electrical characteristic parameters of the energy storage PCS in real time.
6. The verification system for operation control of an energy storage power station based on physical energy storage units according to claim 1, characterized in that, The first unit system simulated battery cluster control unit module (411), the second unit system simulated battery cluster control unit module (421), and the nth unit system simulated battery cluster control unit module (4n1) are equipped with embedded computers and programs, and each has a corresponding physical battery cluster control unit module and battery management unit module (301) and a parameter storage unit corresponding to each sampled battery. They receive the battery parameters of the physical energy storage unit system in real time obtained through the data processing and generation and assignment module (8), and dynamically correct them with the preset operating error change coefficient to obtain the personalized synchronous sampling parameters of all batteries and battery strings of the energy storage power station in real time simulation. They are refreshed and stored in real time according to the set time rhythm, and are configured with the same communication protocol and communication interface as the physical battery cluster control unit module.
7. The verification system for operation control of an energy storage power station based on a physical energy storage unit according to claim 1, characterized in that, The operating control system EMS (9) to be verified, as well as the first battery management system BMS (51), the second battery management system BMS (52), and the nth battery management system BMS (5n), adopt the design configuration and connection method of the energy storage power station design scheme and are installed and connected to be integrated in the operating environment of the physical energy storage unit system. This constitutes the energy storage power station empirical platform system for the operating environment adaptability test and verification working condition scenario of the operating control system EMS and the battery management system BMS to be verified.