GW-level Energy Storage Power Station Battery Management System Verification Platform Based on Physical Parameters

Abstract

The present invention belongs to the technical field of battery energy storage systems, and particularly relates to a GW-level energy storage power station battery management system verification platform based on physical parameters. By using a physical battery energy storage unit system sample consistent with the target design and multiple BMS battery management systems that need to be verified for selection verification and consistent with the scale of the target energy storage power station, they are connected and installed in the operating environment of the sample physical energy storage unit system according to the connection method of the energy storage power station system. The sample system provides the parameters of the battery and the energy storage system during real-time operation. According to the working conditions, each simulated energy storage PCS and the battery cluster control unit of the simulated energy storage unit system generate the real-time operation data of the simulated battery and the battery cluster for the simulated charge and discharge of each battery string according to the preset parameter correction coefficient and method, and experimentally verify the applicability and effectiveness of the BMS battery management system to be verified in various working condition scenarios, providing an effective scientific basis for the design and construction of large-scale battery energy storage power stations and reducing blind construction and investment losses.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery energy storage systems, and particularly relates to a GW-level energy storage power station battery management system verification platform based on physical parameters. Background Art

[0002] The application of battery energy storage power stations in the power grid system is beneficial to the stable operation of the power grid and the improvement of the flexibility regulation of the power grid. Therefore, large-scale battery energy storage power station systems have emerged. Since the scale of the battery energy storage power station system is relatively large, it requires hundreds of thousands, millions, or even tens of millions of single cells. Currently, it is mainly composed of multiple energy storage unit systems that can be independently regulated and operated. The energy storage unit system is composed of batteries and connected battery strings, battery management units, battery cluster control units, a battery management system BMS, and energy storage PCSs through reasonable selection, configuration, and electrical connection. Through the real-time information interaction of each functional component and the implementation of effective operation strategies, charge and discharge regulation is controlled to achieve the target effect of the energy storage system. How to ensure that the monitoring equipment and control devices can meet the requirements of system operation for a large number of monitoring and control objects is a necessary condition for the system to achieve the target effect. At present, in the industry, before building a battery energy storage power station, especially a GW-level large-scale battery energy storage power station, it is impossible to know whether these devices and their connections can meet the requirements, and it is impossible to guarantee and determine the timeliness of the devices to process a large amount of data. Therefore, it is impossible to ensure the safe and normal operation of the energy storage power station project after completion, resulting in the inability of the project system to be put into operation as scheduled and losses to the investors.

[0003] The battery management system is a key technology and equipment in the energy storage power station system. There are no existing tools and means to conduct experiments and verifications on the physical battery management system in large-scale energy storage power stations. The effect of using pure software program simulation has a large gap with the actual system operation and cannot meet the requirements of the energy storage power station system design and the product selection of the battery management system. This makes the investment and construction of energy storage power stations lack a scientific basis and be blind, and it is inevitable that the investment effect cannot reach the expected goal. Summary of the Invention

[0004] To solve the dilemma that it is impossible to effectively experiment and verify key equipment and battery management systems in battery energy storage power stations, especially GW-level large-scale battery energy storage power stations, the present invention proposes a GW-level energy storage power station battery management system verification platform based on physical parameters. It is characterized in that the data processing and assignment module is connected to the physical energy storage PCS through the energy storage unit data communication line, and is respectively connected to each physical battery cluster control unit module through the BMS string communication line. And through the string communication line, it is respectively connected to the physical energy storage PCS and the physical BMS system of the battery management unit module through the sampling wire harness to obtain the real-time operating parameters of the batteries, battery strings and energy storage PCS in the energy storage unit system. The data processing and assignment module identifies and processes the real-time battery parameters and distributes them classified into components 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, the nth unit system simulated energy storage PCS and the nth unit system simulated battery cluster control unit module of multiple simulated energy storage unit systems that make up the GW-level energy storage power station through the assignment communication line, as the reference data for simulated operation. And with the preset operating error change coefficient, it is dynamically corrected by each simulated battery cluster control unit module to obtain the real-time synchronous sampling parameters of all batteries and battery strings in the real-time simulated operation GW energy storage power station. The verification battery management systems BMS of multiple simulated energy storage unit systems of the GW-level energy storage power station 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, the nth unit system simulated energy storage PCS and the nth unit system simulated battery cluster control unit module of their respective unit systems to form multiple energy storage unit systems for the real-time operation of the verification battery management system BMS. Then, the verification operation control module controls the physical energy storage PCS through the energy storage unit data communication line and controls the first unit system simulated energy storage PCS, the second unit system simulated energy storage PCS, and the nth unit system simulated energy storage PCS respectively through the GW simulation power station communication line to form different operating conditions and scenarios for testing and verifying the battery management system BMS and generate real-time experimental and verification data to analyze and determine the functional characteristics, time response characteristics of the verification battery management system BMS and whether the index parameters corresponding to relevant standards meet the system design and operation requirements.

[0005] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the physical BMS system is connected to the physical energy storage PCS through the physical BMS communication line, and is respectively connected to each physical battery cluster control unit module of the first physical battery cluster control unit module and the i-th physical battery cluster control unit module through the BMS string communication line. The first physical battery cluster control unit module is respectively connected to the first battery management unit module of each battery in the first battery PACK through the sampling wire harness connected by the first string communication line, the second battery management unit module of each battery in the second battery PACK through the sampling wire harness, the m-th battery management unit module of each battery in the m-th battery PACK through the sampling wire harness, and the i-th physical battery cluster control unit module is respectively connected to the i1-th battery management unit module of each battery in the i1-th battery PACK through the sampling wire harness connected by the i-th string communication line, the i2-th battery management unit module of each battery in the i2-th battery PACK through the sampling wire harness, and the im-th battery management unit module of each battery in the im-th battery PACK through the sampling wire harness, thus forming the path of full-cell monitoring and sampling of the physical energy storage unit system.

[0006] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the first unit system simulation energy storage PCS, the second unit system simulation energy storage PCS, and the n-th unit system simulation energy storage PCS are functional modules that respectively have the capabilities of accepting and executing the charge and discharge control instructions of the verification operation control module, generating and transmitting the input and output electrical characteristic parameters of the real-time operation of the energy storage PCS, and the conventional communication protocol.

[0007] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the data processing and assignment module is a data processing functional module with an embedded computer and program, and has data storage and multiple communication interfaces.

[0008] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the first unit system simulation battery cluster control unit module, the second unit system simulation battery cluster control unit module, and the n-th unit system simulation battery cluster control unit module are respectively provided with parameter storage units corresponding to each physical battery cluster control unit module, battery management unit module, and each sampled battery, receive the battery parameters of the real-time operation of the physical energy storage unit system obtained through the data processing and assignment module, and perform dynamic correction in cooperation with the preset operation error change coefficient to obtain the personalized sampling data of all batteries and battery strings of the synchronous GW-level energy storage power station in real-time simulation operation, refresh and store the backup in real-time, and at the same time configure the communication protocol and communication interface consistent with the physical battery cluster control unit module.

[0009] The battery management system verification platform for GW-level energy storage power stations based on physical parameters is characterized in that the battery management system (BMS) for verification, the battery management system (BMS) for verification, and the battery management system (BMS) for verification adopt the actual configuration and connection method of a GW-level large-scale energy storage power station and are installed and connected in the operating environment of the physical energy storage unit system, constituting a monitoring platform for the experiment on the adaptability of the battery management system (BMS) operating environment and the verification working condition scenario.

[0010] The present invention belongs to the technical field of battery energy storage systems, and particularly relates to a battery management system verification platform for GW-level energy storage power stations based on physical parameters. By using a physical battery energy storage unit system sample consistent with the target design and multiple BMS battery management systems with the same scale as the target energy storage power station and required to be verified for type selection verification, they are connected and installed in the operating environment of the sample physical energy storage unit system according to the connection method of the energy storage power station system. Through the actual scenario operation of the sample energy storage unit system, real-time operating parameters of the battery and the energy storage system are provided. Each simulated energy storage PCS and the battery cluster control unit of the simulated energy storage unit system generate the simulated charge and discharge current of each battery string and the real-time operating data of the simulated battery and battery cluster according to the preset parameter correction coefficient and method, to experimentally and verify the applicability and effectiveness of the BMS battery management system to be verified under various working condition scenarios, build an experimental verification tool for the design and construction of large-scale battery energy storage power stations, provide an effective scientific basis, and reduce blind construction and investment losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a principle block diagram of a battery management system verification platform for GW-level energy storage power stations based on physical parameters and its composition. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0012] As an example of implementation, the battery management system verification platform for GW-level energy storage power stations based on physical parameters will be described in conjunction with the accompanying drawings. However, the described embodiments are only a part of the embodiments of the present invention applied to the battery management system verification platform for GW-level energy storage power stations based on physical parameters, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall 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 of implementation.

[0013] Such as Figure 1As shown, a GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that a data processing and assignment module (8) is connected to a physical energy storage PCS (1) through an energy storage unit data communication line (6), and at the same time is respectively connected to each physical battery cluster control unit module by a BMS string communication line (7), and is respectively connected to a physical BMS system (5) of a battery management unit module (301) through a sampling wire harness via a string communication line (31), so as to obtain the real-time operation parameters of the batteries, battery strings and energy storage PCS of the energy storage unit system. The data processing and assignment module (8) identifies and processes the data, and classifies and distributes the real-time battery parameters 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) of multiple simulated energy storage unit systems constituting the GW-level energy storage power station through an assignment communication line (81). These parameters are used as the reference data for simulated operation and are dynamically corrected by each simulated battery cluster control unit module in cooperation with a preset operation error variation coefficient to obtain the real-time synchronous sampling parameters of all batteries and battery strings of the real-time simulated operation GW energy storage power station. The verification battery management systems BMS (51), verification battery management systems BMS (52), and verification battery management systems BMS (5n) of multiple simulated energy storage unit systems of the GW-level energy storage power station 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) of their respective unit systems, constituting multiple energy storage unit systems for the real-time operation of the verification battery management system BMS. Then, a verification operation control module (9) controls the physical energy storage PCS (1) through the energy storage unit data communication line (6) and controls 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) respectively through the GW simulation power station communication line, so as to constitute different operation conditions and scenarios of the test verification battery management system BMS and generate real-time experiment and verification data, for analyzing and judging the functional characteristics, time response characteristics of the verification battery management system BMS, and whether the index parameters corresponding to relevant standards meet the system design and operation requirements.

[0014] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the physical BMS system (5) is connected to the physical energy storage PCS (1) through the physical BMS communication line, and is respectively connected to each physical battery cluster control unit module of the first physical battery cluster control unit module (41) and the i-th physical battery cluster control unit module (4i) through the BMS string communication line (7). The first physical battery cluster control unit module (41) is respectively connected to the first battery management unit module (301) of each battery in the first battery PACK (201) connected through the sampling wire harness, the second battery management unit module (302) of each battery in the second battery PACK (202) connected through the sampling wire harness, the m-th battery management unit module (30m) of each battery in the m-th battery PACK (20m) connected through the sampling wire harness, and the i-th physical battery cluster control unit module (4i) is respectively connected to the i1-th battery management unit module (3i1) of each battery in the i1-th battery PACK (2i1) connected through the sampling wire harness, the i2-th battery management unit module (3i2) of each battery in the i2-th battery PACK (2i2) connected through the sampling wire harness, and the im-th battery management unit module (3im) of each battery in the im-th battery PACK (2im) connected through the sampling wire harness through the i-th string communication line (3i), thus forming the path for full-cell monitoring and sampling of the physical energy storage unit system.

[0015] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the first unit system simulation energy storage PCS (11), the second unit system simulation energy storage PCS (12), and the n-th unit system simulation energy storage PCS (1n) respectively receive and execute charge and discharge control instructions, and are functional modules with the ability to generate and transmit the input and output electrical characteristic parameters of the real-time operation of the energy storage PCS and the function of conventional communication protocols.

[0016] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the data processing and assignment module (8) is a data processing functional module with an embedded computer and program, and has data storage and multiple communication interfaces.

[0017] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the first unit system simulation battery cluster control unit module (411), the second unit system simulation battery cluster control unit module (421), and the nth unit system simulation battery cluster control unit module (4n1) are respectively provided with parameter storage units corresponding to each physical battery cluster control unit module, battery management unit module, and each sampled battery, receive the battery parameters of the real-time operation of the physical energy storage unit system obtained through the data processing and assignment module (8), and perform dynamic correction in cooperation with the preset operation error change coefficient to obtain personalized sampling data of all batteries and battery strings of the real-time simulation operation of the synchronous GW-level energy storage power station, refresh and store the backup in real time, and at the same time configure the communication protocol and communication interface consistent with the physical battery cluster control unit module.

[0018] The GW-level energy storage power station battery management system verification platform based on physical parameters is characterized in that the verification battery management systems BMS (51), BMS (52), and BMS (5n) adopt the actual configuration and connection mode of the GW-level large-scale energy storage power station and are installed and connected in the operating environment of the physical energy storage unit system, constituting a monitoring platform for the experimental verification of the adaptability of the verification battery management system BMS operating environment and the verification working condition scenario.

[0019] The present invention belongs to the technical field of battery energy storage systems, and specifically relates to a GW-level energy storage power station battery management system verification platform based on physical parameters. By adopting a physical battery energy storage unit system sample consistent with the target design and multiple BMS battery management systems that need to be verified for selection verification and are consistent with the scale of the target energy storage power station, they are connected and installed in the operating environment of the sample physical energy storage unit system according to the energy storage power station system connection mode. Through the actual scenario operation of the sample energy storage unit system, the battery and energy storage system parameters of the real-time operation are provided. The battery cluster control units of each simulated energy storage PCS and simulated energy storage unit system generate the simulated charge and discharge currents of each battery string and the real-time operation data of the simulated batteries and battery clusters according to the preset parameter correction coefficients and methods, experiment and verify the applicability and effectiveness of the BMS battery management systems that need to be verified in various working condition scenarios, build an experimental verification tool for the design and construction of large-scale battery energy storage power stations, and provide an effective scientific basis, reducing blind construction and investment losses.

Claims

1. A GW-level energy storage power station battery management system verification platform based on physical parameters, characterized in that The data processing and assignment module is connected to the physical energy storage PCS through the energy storage unit data communication line. At the same time, it is respectively connected to each physical battery cluster control unit module through the BMS string communication line, and is connected to the physical BMS system of the battery management unit module through the sampling wire harness via the string communication line, so as to obtain the real-time operation parameters of the batteries, battery strings and energy storage PCS in the energy storage unit system. The data processing and assignment module identifies and processes the data, and distributes the real-time battery parameters classified by components 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, the nth unit system simulated energy storage PCS and the nth unit system simulated battery cluster control unit module of multiple simulated energy storage unit systems that make up the GW-level energy storage power station through the assignment communication line. These parameters serve as the reference data for simulated operation and are dynamically corrected by each simulated battery cluster control unit module in cooperation with the preset operation error change coefficient, so as to obtain the real-time synchronous sampling parameters of all batteries and battery strings in the GW energy storage power station during real-time simulated operation. The multiple simulated energy storage unit systems of the GW-level energy storage power station 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, the nth unit system simulated energy storage PCS and the nth unit system simulated battery cluster control unit module of their respective unit systems by the corresponding verification battery management systems BMS, verification battery management systems BMS, verification battery management systems BMS, forming multiple energy storage unit systems for the real-time operation of the verification battery management system BMS. Then, the verification operation control module controls the physical energy storage PCS through the energy storage unit data communication line and controls the first unit system simulated energy storage PCS, the second unit system simulated energy storage PCS, the nth unit system simulated energy storage PCS respectively through the GW simulation power station communication line, so as to form different operation conditions and scenarios of the test verification battery management system BMS and generate real-time experimental and verification data, which are used to analyze and judge whether the functional characteristics, time response characteristics of the verification battery management system BMS and the index parameters corresponding to relevant standards meet the system design and operation requirements.

2. The GW-level energy storage power station battery management system verification platform based on physical parameters according to claim 1, characterized in that, The physical BMS system is connected to the physical energy storage PCS through the physical BMS communication line, and is respectively connected to each physical battery cluster control unit module of the first physical battery cluster control unit module and the i-th physical battery cluster control unit module through the BMS string communication line. The first physical battery cluster control unit module is respectively connected to the first battery management unit module of each battery in the first battery PACK through the sampling harness, the second battery management unit module of each battery in the second battery PACK through the sampling harness, the m-th battery management unit module of each battery in the m-th battery PACK through the sampling harness, and the i-th physical battery cluster control unit module is respectively connected to the i1-th battery management unit module of each battery in the i1-th battery PACK through the sampling harness, the i2-th battery management unit module of each battery in the i2-th battery PACK through the sampling harness, and the im-th battery management unit module of each battery in the im-th battery PACK through the sampling harness through the i-th string communication line, forming a path for full-cell monitoring and sampling of the physical energy storage unit system.

3. The GW-level energy storage power station battery management system verification platform based on physical parameters according to claim 1, characterized in that The first unit system simulated energy storage PCS, the second unit system simulated energy storage PCS, and the n-th unit system simulated energy storage PCS are functional modules that respectively have the capabilities of accepting and executing charge and discharge control instructions of the verification operation control module, generating and transmitting input and output electrical characteristic parameters of the real-time operation of the energy storage PCS, and conventional communication protocols.

4. The GW-level energy storage power station battery management system verification platform based on physical parameters according to claim 1, characterized in that, The data processing and assignment module is a data processing functional module with an embedded computer and program, and has data storage and multiple communication interfaces.

5. The verification platform for the GW-level energy storage power station battery management system based on physical parameters according to claim 1, 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 n-th unit system simulated battery cluster control unit module are respectively provided with parameter storage units corresponding to each physical battery cluster control unit module, battery management unit module, and each sampled battery, receive the battery parameters of the real-time operation of the physical energy storage unit system obtained through the data processing and assignment module, and perform dynamic correction in cooperation with the preset operation error change coefficient to obtain personalized sampling data of all batteries and battery strings of the real-time simulated operation synchronous GW-level energy storage power station, and refresh and store the backup in real time. At the same time, it is configured with the same communication protocol and communication interface as the physical battery cluster control unit module.

6. The GW-level energy storage power station battery management system verification platform based on physical parameters according to claim 1, wherein The verification battery management system BMS, the verification battery management system BMS, and the verification battery management system BMS adopt the actual configuration and connection method of the GW-level large-scale energy storage power station and are installed and connected in the operating environment of the physical energy storage unit system, forming a monitoring platform for the verification of the adaptability experiment and verification working condition scenario of the verification battery management system BMS.

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