5MWH energy storage system integration test platform

Abstract

The utility model relates to a 5MWH energy storage system integration test platform relates to energy storage equipment technical field. Through adopting two sets of energy storage system to test, utilizes two bidirectional energy storage converters to cooperate with a three-winding dry-type transformer to realize charge -discharge quick conversion capacity, supports parallel operation mode, off -grid operation mode, and the accurate control charge -discharge power, reduces to the minimum with grid power consumption, and simultaneously integrates intelligent power distribution cabinet and control system to realize the operation of custom test procedure, effectively controls energy storage system and auxiliary energy storage system to carry out energy circulation test, and the work mode of intelligent switching both, improves test efficiency.

Description

Technical Field

[0001] This utility model relates to a 5MWH energy storage system integrated testing platform, and belongs to the field of energy storage equipment technology. Background Technology

[0002] Energy storage systems typically require multiple tests before being put into use to ensure that the system can function properly.

[0003] Existing energy storage system testing platforms perform various tests on energy storage systems through the cooperation of converters and transformers. Commonly used energy storage systems are mostly 5MWH energy storage systems, but they have high energy consumption and are dependent on grid capacity. Traditional testing platforms need to dissipate the energy of the energy storage system through resistive loads or directly draw power from the grid for charging, resulting in high grid power consumption and high grid capacity requirements (to match the test power). In addition, the overall integration of the equipment is low, all equipment needs to be installed separately on-site and wired and debugged, which also occupies a large area. The automation level of the platform is limited, and power adjustment requires a lot of manual intervention, which is prone to human error. Furthermore, due to the low integration of the platform, its overall equipment protection level is low, mostly IP30-IP40, resulting in poor environmental adaptability. Therefore, a 5MWH energy storage system integrated testing platform is proposed to solve the problems existing in the current technology. Utility Model Content

[0004] The purpose of this invention is to address the deficiencies or shortcomings in existing technologies by providing a 5MWH energy storage system integrated testing platform. This platform utilizes two sets of energy storage systems for comparative testing, employing two bidirectional energy storage converters in conjunction with a three-winding dry-type transformer to achieve rapid charge / discharge conversion capabilities. It supports both grid-connected and off-grid operation modes, precisely controls charge / discharge power, and minimizes grid power consumption. Simultaneously, it integrates an intelligent distribution cabinet and control system to enable customized test program operation, effectively controlling the energy cycle testing of the energy storage system and auxiliary energy storage system, intelligently switching their operating modes, and improving testing efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: It includes a protective chamber 1, an energy circulation unit, and a moisture-proof base plate 4. The energy circulation unit includes a first bidirectional energy storage converter 2, a second bidirectional energy storage converter 3, and a three-winding dry-type transformer 5. The first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 are symmetrically arranged on both sides of the protective chamber 1 and are both mounted on the moisture-proof base plate 4, and are interlocked by hard wire connection. The three-winding dry-type transformer 5 is located inside the protective chamber 1. An integrated control cabinet 6 is also installed inside the protective chamber 1. The DC terminals of the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 are connected to the integrated control cabinet 6 via DC cables. The AC terminals of the first bidirectional energy storage converter 2 are connected to the input winding of the three-winding dry-type transformer 5 via copper busbars. The AC terminals of the second bidirectional energy storage converter 3 are connected to the output winding of the three-winding dry-type transformer 5 via copper busbars. The input terminal of the integrated control cabinet 6 is connected to the neutral point winding of the three-winding dry-type transformer 5 via a cable.

[0006] Furthermore, the first bidirectional energy storage converter 2 is connected to an external energy storage system under test, and the second bidirectional energy storage converter 3 is connected to an external backup energy storage system. Both the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 are equipped with an emergency stop control module 9, a first temperature sensor 10 and a fault signal acquisition module 11, and the three-winding dry-type transformer 5 is equipped with a second temperature sensor 12.

[0007] Furthermore, the integrated control cabinet 6 is equipped with, from top to bottom, a human-machine interface terminal 61, a communication management layer 62, an EMS energy management module 63, a signal processing layer 64, and a power distribution layer 65. The human-machine interface terminal 61 is connected to the communication management layer 62 via a network cable. The human-machine interface terminal 61 is equipped with a main control system 611, which is connected to the EMS energy management module 63 and the signal processing layer 64 via a CAN bus. The communication management layer 62 is connected to the EMS energy management module 63 via a shielded twisted pair cable. The signal processing layer 64 is connected to the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3. The human-machine interface terminal 61, the communication management layer 62, the EMS energy management module 63, and the signal processing layer 64 are all electrically connected to the power distribution layer 65.

[0008] Furthermore, the communication management layer 62 includes an Ethernet switch and an optical transceiver module, the EMS energy management module 63 has a CAN bus interface and status indicator lights on its front-end panel, the signal processing layer 64 centrally arranges IO acquisition modules and protocol conversion gateways, and the power distribution layer 65 integrates a UPS power supply and an intelligent power distribution unit.

[0009] Furthermore, a signal control board 641 is provided on the signal processing layer 64, a hard-wired interlock circuit 642 is provided on the signal control board, and an interlock relay 643 is also provided on the signal control board 641 and electrically connected to the hard-wired interlock circuit 642. The hard-wired interlock circuit 642 is electrically connected to the fault signal acquisition module 11. The interlock relay 643 is connected to the emergency stop control module 9 on the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 through shielded twisted pair cables.

[0010] Furthermore, the protective chamber 1 is provided with a first waterproof cover 7 and a second waterproof cover 8 on both sides, which are respectively sealed to the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 to protect the connecting lines.

[0011] After adopting the above technical solution, the beneficial effects of this utility model are as follows: by using two sets of energy storage systems for testing, two bidirectional energy storage converters are used in conjunction with a three-winding dry-type transformer to achieve rapid charging and discharging conversion capability, support grid-connected and off-grid operation modes, accurately control charging and discharging power, minimize grid power consumption, and integrate intelligent distribution cabinet and control system to realize customized test program operation, effectively control the energy storage system and auxiliary energy storage system to perform energy cycle testing, intelligently switch the working modes of the two, and improve test efficiency. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 The second angle view;

[0015] Figure 3 yes Figure 1 The third-angle view;

[0016] Figure 4 This is a schematic diagram of the internal structure of the protective compartment 1 of this utility model;

[0017] Figure 5 This is a schematic diagram of the integrated control cabinet 6 in this utility model;

[0018] Figure 6 This is a schematic diagram of the testing process of this utility model;

[0019] Figure 7 This is a schematic diagram illustrating the working principle of this utility model;

[0020] Figure 8 This is a schematic diagram of the power loading logic in this utility model.

[0021] Explanation of reference numerals in the attached diagram: 1. Protective compartment; 2. First bidirectional energy storage converter; 3. Second bidirectional energy storage converter; 4. Moisture-proof base plate; 5. Three-winding dry-type transformer; 6. Integrated control cabinet; 7. First waterproof cover; 8. Second waterproof cover; 9. Emergency stop control module; 10. First temperature sensor; 11. Fault signal acquisition module; 12. Second temperature sensor; 61. Human-machine interface terminal; 62. Communication management layer; 63. EMS energy management module; 64. Signal processing layer; 65. Power distribution layer; 641. Signal control board; 642. Hard-wired interlock circuit; 643. Interlock relay. Detailed Implementation

[0022] See Figures 1-8As shown, the technical solution adopted in this specific embodiment is as follows: It includes a protective chamber 1, an energy circulation unit, and a moisture-proof base plate 4. The energy circulation unit includes a first bidirectional energy storage converter 2, a second bidirectional energy storage converter 3, and a three-winding dry-type transformer 5. The first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 are symmetrically arranged on both sides of the protective chamber 1, both mounted on the moisture-proof base plate 4, and interlocked by hard wiring. The three-winding dry-type transformer 5 is located inside the protective chamber 1. In this embodiment, a counter-type test platform structure is adopted, with the two sets of bidirectional energy storage converters mounted on... On both sides of the three-winding dry-type transformer, there are two sets of 2.5MW bidirectional energy storage converters (hereinafter referred to as the first PCS and the second PCS). The DC side operating voltage range is 1000-1500V, and the AC side rated voltage is 690V. They have fast charge and discharge conversion capability (conversion response time <100ms) and support both grid-connected and off-grid operation modes. Electrical isolation between the two PCS AC sides is achieved through the three-winding dry-type transformer. The voltage conversion specification is 0.69 / 0.69kV, ensuring the safe operation of the system. The first bidirectional energy storage converter... The first bidirectional energy storage converter 2 is connected to the external energy storage system under test, and the second bidirectional energy storage converter 3 is connected to the external backup energy storage system. Both the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 are equipped with an emergency stop control module 9, a first temperature sensor 10, and a fault signal acquisition module 11. The three-winding dry-type transformer 5 is equipped with a second temperature sensor 12. Under the unified control of the control system, the working modes of the two PCSs are coordinated. When the system under test (hereinafter referred to as SPB1) is in a discharging state, the auxiliary unit (hereinafter referred to as SPB2) is in a synchronous charging state. When SPB1 is charging, SPB2 is synchronously discharging, allowing energy to flow internally between the two systems. The actual input / output function of the power grid is reduced to less than 20% of that of traditional test system solutions, thereby reducing dependence on grid energy and reducing energy consumption. The integrated structure design only requires connecting the grid and the two energy storage systems during field testing, shortening the installation and commissioning cycle to one day. In contrast, traditional platform installation and commissioning requires at least 72 hours due to the need for converter group assembly and power matching with the grid, thus effectively improving installation and commissioning efficiency.

[0023] The protective compartment 1 also houses an integrated control cabinet 6. The DC terminals of the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 are connected to the integrated control cabinet 6 via DC cables. The AC terminals of the first bidirectional energy storage converter 2 are connected to the input winding of the three-winding dry-type transformer 5 via copper busbars. The AC terminals of the second bidirectional energy storage converter 3 are connected to the output winding of the three-winding dry-type transformer 5 via copper busbars. The input terminal of the integrated control cabinet 6 is connected to the neutral point winding of the three-winding dry-type transformer 5 via a cable. In this embodiment, the integrated control cabinet is a control system and communication, energy management, and power distribution integrated unit, housed within the protective compartment along with the three-winding dry-type transformer. This integrated design effectively… Reducing the length of the connection lines greatly improves the speed of equipment operation and reduces the difficulty of equipment installation and commissioning. At the same time, the integrated design is also conducive to waterproof and dustproof treatment. In addition, the two PCS are connected by hard wires for interlocking and are detected and controlled by the integrated control cabinet. Temperature sensors monitor the temperature of the PCS and transformer. When one PCS fails, the emergency stop control module will trigger an emergency stop signal, and the other PCS will respond within 10 seconds and stop working simultaneously. The integrated control cabinet provides unified control of the equipment and cuts off the power to all equipment. Specifically, 1. Emergency stop: triggered by IO signal, the PCS, transformer, low voltage cabinet and BMS are all de-energized and stop working.

[0024] 2. Cell protection: When the cell voltage is ≥3.55V, a slight warning is issued; when the cell voltage is ≥3.6V, charging and discharging are prohibited; when the cell voltage is ≥3.65V, the main circuit breaker of the DC compartment combiner cabinet trips, and the entire testing unit is powered off and stops working.

[0025] 3. Transformer temperature: Tmax≥150 PCS shutdown and tripping, Tmax≥130 alarm prompt, Tmax≥60 cooling fan starts to prevent equipment damage;

[0026] The protective chamber is constructed of galvanized steel sheet, 1.5mm thick, with an epoxy resin coating (80μm thick). It withstands a salt spray test of ≥500h. All metal plate joints are constructed using continuous welding, with a weld height ≥3mm. After welding, the surface is ground smooth and coated with sealant (silicone weather-resistant sealant, 10mm wide). The chamber has a door and lock on the front. The door is surrounded by EPDM rubber sealing strips (20×15mm cross-section), with a compression deformation rate of 30%-40%. The lock uses a multi-point clamping handle. The cable inlets and outlets use IP67-rated waterproof glands, internally filled with flame-retardant sealant. These protective measures achieve an IP54 rating, enhancing environmental adaptability and making the chamber more suitable for various environments.

[0027] More specifically, the integrated control cabinet 6 is equipped with, from top to bottom, a human-machine interface terminal 61, a communication management layer 62, an EMS energy management module 63, a signal processing layer 64, and a power distribution layer 65. The human-machine interface terminal 61 is connected to the communication management layer 62 via a network cable. The human-machine interface terminal 61 contains a main control system 611, which is connected to the EMS energy management module 63 and the signal processing layer 64 via a CAN bus. The communication management layer 62 is connected to the EMS energy management module 63 via a shielded twisted pair cable. The signal processing layer 64 is connected to the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3. The human-machine interface terminal 61, the communication management layer 62, the EMS energy management module 63, and the signal processing layer 64 are all electrically connected to the power distribution layer 65. In this embodiment, the human-machine interface terminal is the operating terminal, which contains the main control system to centrally display and control the parameters of the other devices, and is directly connected to the lower communication management layer via a network cable.

[0028] The communications management layer is primarily responsible for network communications, ensuring the efficiency and effectiveness of signal transmission.

[0029] The EMS energy management module serves as the core control layer, enabling full monitoring and control of energy flow testing.

[0030] The signal processing layer mainly collects the signals fed back by various devices in the system, and it is also the processing layer for the hardwired interlocking mechanism.

[0031] The power distribution layer acts as a power distribution cabinet, providing intelligent power supply strategies for equipment operation;

[0032] Through integrated design, functional modules are vertically partitioned and isolated to avoid signal interference. At the same time, direct wiring reduces cable length and effectively reduces command latency. With a cable length of less than 0.5m, the command latency is reduced to 50ms.

[0033] More specifically, the communication management layer 62 includes an Ethernet switch and a fiber optic transceiver module. The Ethernet switch serves as the local data exchange hub of the entire system, responsible for connecting various intelligent units (such as EMS modules and human-machine interaction terminals) within the cabinet with external networks, constructing a high-speed and stable local area network (LAN) to ensure the smooth transmission of monitoring data and control commands.

[0034] Fiber optic transceiver module: Used to realize long-distance, interference-resistant communication. It converts electrical signals into optical signals and exchanges data with remote dispatch centers, cloud platforms or other systems through optical fibers. It effectively avoids the signal attenuation and electromagnetic interference problems in long-distance copper cable transmission. This layer is the "transportation hub" of internal and external information of the system, laying the foundation for the networking and remote controllability of the entire platform.

[0035] The EMS energy management module 63 front panel is equipped with a CAN bus interface and status indicator lights. As the "brain" of the entire test platform, this module runs the core algorithm and is responsible for executing energy scheduling strategies, coordinating the working modes of the two PCS in real time (such as charging / discharging switching), performing system status analysis and advanced application calculations (such as SOC calibration and efficiency analysis).

[0036] CAN bus interface: Controller Area Network (CAN) is a highly reliable, real-time fieldbus. Through this interface, the EMS module can perform high-speed, stable, bidirectional data communication with key devices such as PCS and BMS (Battery Management System), send control commands, and collect real-time operating data.

[0037] Status indicator lights: Provide users with intuitive indications of the module's operating status (such as running, fault, communication interruption, etc.), and serve as the first-line human-machine interaction window for rapid fault diagnosis and maintenance;

[0038] This layer is the core of the platform's intelligent control, enabling complex energy flow management and serving as a key differentiator from simple testing equipment.

[0039] The signal processing layer 64 centrally arranges IO acquisition modules and protocol conversion gateways. The IO acquisition module is responsible for acquiring and processing analog and digital signals. For example, it acquires analog signals from various sensors (such as temperature, voltage, and current sensors) and receives status digital signals from circuit breakers and relays to provide raw data for system monitoring and protection.

[0040] Protocol Conversion Gateway: In industrial environments, different devices often use different communication protocols (such as Modbus, Profibus, DeviceNet, etc.). This gateway acts as a "translator" to convert between different protocols, enabling third-party devices using non-CAN protocols (such as certain models of transformer monitoring units and environmental sensors) to seamlessly access the system and interact with the EMS module.

[0041] This layer is key to the system's ability to perceive external states and expand compatibility. It converts signals from the physical world into digital information and solves the problem of interconnectivity between devices.

[0042] The power distribution layer 65 integrates UPS power supply and intelligent power distribution unit. UPS power supply (uninterruptible power supply): provides clean, stable and uninterrupted power supply for key equipment (such as EMS module, switch and controller) in the entire control cabinet. In the event of mains power failure or abnormality, UPS can immediately switch to battery power supply to ensure that the control system is not powered, prevent data loss and abnormal equipment shutdown, and greatly improve the reliability of the system.

[0043] Intelligent power distribution unit: responsible for the distribution, protection and management of input power. It distributes safe voltages for different circuits to each layer and module in the cabinet, and integrates protective devices such as fuses and circuit breakers to prevent overload and short circuit faults. Its "intelligence" is reflected in its ability to monitor the current and voltage parameters of each circuit and upload power distribution information to the EMS or monitoring system through the communication interface.

[0044] More specifically, the signal processing layer 64 is provided with a signal control board 641, which is provided with a hard-wired interlock circuit 642. The signal control board 641 is also provided with an interlock relay 643 electrically connected to the hard-wired interlock circuit 642. The hard-wired interlock circuit is the "brain" or "logic judgment center" of the system. It is usually composed of basic logic gate circuits or a safety PLC. It receives signals from the fault acquisition module, makes judgments according to preset safety logic (such as "a fault signal at any end is true"), and outputs a drive signal to control the action of the interlock relay. Its core feature is that the judgment is implemented by hardware circuit, which is extremely fast (microsecond level) and has a reliability far higher than that of software program judgment.

[0045] The interlocked relay is a key "execution switch" in the system. It is a relay directly driven by the hard-wired interlock circuit (642). When it receives the drive signal from the hard-wired interlock circuit (642), the relay will immediately act (close or open), thereby changing the state of its output contacts (normally open contacts close, normally closed contacts open).

[0046] The hard-wire interlock circuit 642 is electrically connected to the fault signal acquisition module 11. The interlock relay 643 is connected to the emergency stop control module 9 on the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 through shielded twisted pair cables. The fault signal acquisition module is the "sensory nerve" of the system. It is responsible for real-time acquisition of fault signals (such as overvoltage, overcurrent, overtemperature, insulation fault, etc.) from various sensors (such as voltage and current sensors) or intelligent devices (such as battery management system BMS). Once a preset dangerous condition is detected, the module will immediately output a fault status signal (usually a passive dry contact or level signal).

[0047] The emergency stop control module is the "final actuator" installed on two PCS. It directly controls the enable of the main power circuit of the converter. When a stop signal is received from the interlock relay through the shielded twisted pair, the module will immediately act to forcibly cut off the drive signal of the power switching device (such as IGBT) of the converter, or directly disconnect its DC side contactor, so that the converter stops working.

[0048] More specifically, the protective chamber 1 is equipped with a first waterproof cover 7 and a second waterproof cover 8 on both sides, which are respectively sealed to the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 to protect the connecting lines. Since the two PCS devices are set up independently of the protective chamber, the connecting lines between them and the transformer are sealed and protected by the waterproof covers, which can effectively improve the protection performance of the entire test platform.

[0049] This embodiment also provides a testing method for a 5MWH energy storage system integrated test platform, including the following steps:

[0050] Step 1: Connect the two systems by connecting the energy storage system under test and the auxiliary energy storage system to the DC side of the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3, respectively. Step 2: Parameter setting. Set the charging and discharging parameters through the centralized control system: set the SOC range to 10%-90%, the stepped power loading method, and the shutdown temperature threshold to 55℃.

[0051] Step 3: Self-test to confirm that the first bidirectional energy storage converter 2, the second bidirectional energy storage converter 3, the three-winding dry-type transformer 5, and the communication link are in normal condition, and the initial SOC of the energy storage system under test and the auxiliary energy storage system is 50%; Step 4: Start the energy internal circulation test to make the auxiliary energy storage system charge synchronously when the energy storage system under test discharges; Step 5: Mode switching. When the SOC of the energy storage system under test drops to 10%, the charging and discharging roles between the system and the auxiliary energy storage system are automatically switched.

[0052] Step 6: Abnormal handling. When the energy storage system under test sends an over-temperature discharge prohibition signal, the control system immediately sends a command to reduce the power of the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3 to 0 at a rate of 500kW / 30 seconds and shut them down. At the same time, the voltage, current and temperature data at the time of the fault are recorded.

[0053] Step 7: Generate a test report. The control system stores data such as voltage, current, power, and SOC in real time. After the cycle is completed, a test report containing charge and discharge efficiency and capacity decay rate is automatically generated.

[0054] More specifically, in step 2, the power loading method is a stepped adjustment, with charging and discharging performed using a stepped power adjustment logic of 0→500kW→1000kW→2500kW.

[0055] More specifically, in step 4, the energy internal circulation test is initiated, and temperature sensor 11 is used to detect the temperature of the first bidirectional energy storage converter 2 and the second bidirectional energy storage converter 3. When the detected temperature is ≥70℃, the charging and discharging power is automatically reduced by 50%.

[0056] The above description is only used to illustrate the technical solution of this utility model and is not intended to limit it. Any other modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model, as long as they do not depart from the spirit and scope of the technical solution of this utility model, should be covered within the scope of the claims of this utility model.

Claims

1. A 5MWH energy storage system integrated test platform, characterized in that: It includes a protective chamber (1), an energy circulation unit, and a moisture-proof base plate (4). The energy circulation unit includes a first bidirectional energy storage converter (2), a second bidirectional energy storage converter (3), and a three-winding dry-type transformer (5). The first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3) are symmetrically arranged on both sides of the protective chamber (1) and are both installed on the moisture-proof base plate (4), and are interlocked by hard wire connection. The three-winding dry-type transformer (5) is installed inside the protective chamber (1). An integrated control system is also installed inside the protective chamber (1). The DC terminals of the first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3) are connected to the integrated control cabinet (6) via DC cables. The AC terminals of the first bidirectional energy storage converter (2) are connected to the input winding of the three-winding dry-type transformer (5) via copper busbars. The AC terminals of the second bidirectional energy storage converter (3) are connected to the output winding of the three-winding dry-type transformer (5) via copper busbars. The input terminal of the integrated control cabinet (6) is connected to the neutral point winding of the three-winding dry-type transformer (5) via a cable.

2. The 5MWH energy storage system integration test platform according to claim 1, characterized in that: The first bidirectional energy storage converter (2) is connected to an external energy storage system to be tested, and the second bidirectional energy storage converter (3) is connected to an external backup energy storage system. Both the first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3) are equipped with an emergency stop control module (9), a first temperature sensor (10) and a fault signal acquisition module (11). The three-winding dry-type transformer (5) is equipped with a second temperature sensor (12).

3. The 5MWH energy storage system integration test platform according to claim 1, characterized in that: The integrated control cabinet (6) is equipped with a human-machine interaction terminal (61), a communication management layer (62), an EMS energy management module (63), a signal processing layer (64), and a power distribution layer (65) in sequence from top to bottom. The human-machine interaction terminal (61) is connected to the communication management layer (62) via a network cable. The human-machine interaction terminal (61) is equipped with a main control system (611) and is connected to the EMS energy management module (63) and the signal processing layer (64) via a CAN bus. The communication management layer (62) is connected to the EMS energy management module (63) via a shielded twisted pair cable. The signal processing layer (64) is connected to the first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3). The human-machine interaction terminal (61), the communication management layer (62), the EMS energy management module (63), and the signal processing layer (64) are all electrically connected to the power distribution layer (65).

4. The 5MWH energy storage system integration test platform according to claim 3, characterized in that: The communication management layer (62) includes an Ethernet switch and a fiber optic transceiver module. The front panel of the EMS energy management module (63) is configured with a CAN bus interface and status indicator lights. The signal processing layer (64) centrally arranges IO acquisition modules and protocol conversion gateways. The power distribution layer (65) integrates UPS power supply and intelligent power distribution unit.

5. The 5MWH energy storage system integration test platform according to claim 3, characterized in that: The signal processing layer (64) is provided with a signal control board (641), and the signal control board is provided with a hard-wired interlock circuit (642). The signal control board (641) is also provided with an interlock relay (643) electrically connected to the hard-wired interlock circuit (642). The hard-wired interlock circuit (642) is electrically connected to the fault signal acquisition module (11). The interlock relay (643) is connected to the emergency stop control module (9) on the first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3) through a shielded twisted pair cable.

6. The 5MWH energy storage system integration test platform according to claim 1, characterized in that: The integrated control cabinet (6) is equipped with a human-machine interaction terminal (61), a communication management layer (62), an EMS energy management module (63), a signal processing layer (64), and a power distribution layer (65) in sequence from top to bottom. The human-machine interaction terminal (61) is connected to the communication management layer (62) via a network cable. The human-machine interaction terminal (61) is equipped with a main control system (611) and is connected to the EMS energy management module (63) and the signal processing layer (64) via a CAN bus. The communication management layer (62) is connected to the EMS energy management module (63) via a shielded twisted pair cable. The signal processing layer (64) is connected to the first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3). The human-machine interaction terminal (61), the communication management layer (62), the EMS energy management module (63), and the signal processing layer (64) are all electrically connected to the power distribution layer (65).

7. The 5MWH energy storage system integration test platform according to claim 3, characterized in that: The communication management layer (62) includes an Ethernet switch and a fiber optic transceiver module. The front panel of the EMS energy management module (63) is configured with a CAN bus interface and status indicator lights. The signal processing layer (64) centrally arranges IO acquisition modules and protocol conversion gateways. The power distribution layer (65) integrates UPS power supply and intelligent power distribution unit.

8. The 5MWH energy storage system integration test platform according to claim 3, characterized in that: The signal processing layer (64) is provided with a signal control board (641), and the signal control board is provided with a hard-wired interlock circuit (642). The signal control board (641) is also provided with an interlock relay (643) electrically connected to the hard-wired interlock circuit (642). The hard-wired interlock circuit (642) is electrically connected to the fault signal acquisition module (11). The interlock relay (643) is connected to the emergency stop control module (9) on the first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3) through a shielded twisted pair cable.

9. The 5MWH energy storage system integration test platform according to claim 1, characterized in that: The protective chamber (1) is provided with a first waterproof cover (7) and a second waterproof cover (8) on both sides, which are respectively sealed to the first bidirectional energy storage converter (2) and the second bidirectional energy storage converter (3) to protect the connecting lines.

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