Energy storage system test method, electronic equipment and computer readable storage medium

Abstract

The invention discloses an energy storage system test method, electronic equipment and a computer readable storage medium. The energy storage system comprises a direct current cabin, a power conversion subsystem and an energy management subsystem, and the method comprises the steps that a basic test environment of the energy storage system is configured, the basic test environment comprises test voltage, and the voltage value of the test voltage is determined based on the power utilization voltage specification of a test place where the energy storage system is located. And under the condition that the configuration of the basic test environment is completed, adjusting the basic test environment according to the selected target test object, and determining a target test environment matched with the target test object. And testing the target test object of the energy storage system in the target test environment. Thus, by using the test voltage meeting the power utilization voltage specification of the test place where the energy storage system is located, the system does not need to depend on 10kV and 35kV high-voltage grid-connected points, and can avoid the high-voltage grid transformation of energy storage system test scenes such as factories, thereby reducing the test cost and shortening the test period.

Description

Technical Field

[0001] This invention relates to the field of energy storage system testing technology, and in particular to energy storage system testing methods, electronic devices, and computer-readable storage media. Background Technology

[0002] In related technologies, the commissioning of energy storage systems generally relies on high-voltage grid connection points such as 10kV and 35kV. This requires electrical connection and parameter adaptation with the high-voltage grid to complete performance testing of the energy storage system under grid-connected conditions. However, in actual testing scenarios such as factories, most are only equipped with low-voltage power supply systems and lack such high-voltage grid connection points. Therefore, actual testing scenarios such as factories require grid upgrades, leading to increased costs and time spent commissioning energy storage systems. Summary of the Invention

[0003] This application provides a test method for an energy storage system, an electronic device, and a computer-readable storage medium.

[0004] This application provides a testing method for an energy storage system, the method comprising:

[0005] Configure the basic test environment for the energy storage system, wherein the basic test environment includes a test voltage, and the voltage value of the test voltage is determined based on the power voltage specification of the test site where the energy storage system is located;

[0006] Once the basic test environment configuration is complete, the basic test environment is adjusted according to the selected target test object to determine the target test environment that matches the target test object.

[0007] The target test object of the energy storage system is tested under the target test environment.

[0008] Thus, a basic test environment for the energy storage system is configured. This basic test environment includes a test voltage, the value of which is determined based on the voltage specifications of the testing site where the energy storage system is located. Next, with the basic test environment configured, it is adjusted according to the selected target test object to determine a target test environment that matches the target test object. Finally, the target test object of the energy storage system is tested under the target test environment. By using a test voltage that meets the voltage specifications of the testing site where the energy storage system is located, it is not necessary to rely on 10kV or 35kV high-voltage grid connection points, avoiding the need for high-voltage grid modifications to energy storage system testing scenarios such as factories, thereby reducing testing costs and time. Furthermore, the test environment can be flexibly adjusted according to different target test objects, covering the commissioning phase of the energy storage system and meeting diverse testing needs. In addition, configuring the basic test environment based on the low-voltage power supply of the testing site where the energy storage system is located avoids the electrical risks associated with high-voltage operation, and targeted environmental adjustments ensure the safety and controllability of each testing phase.

[0009] In some embodiments, the energy storage system includes a DC module, a power conversion subsystem, and an energy management subsystem; the test voltage includes a first auxiliary power supply, a second auxiliary power supply, and a third auxiliary power supply; and the basic test environment for configuring the energy storage system includes:

[0010] The power conversion subsystem is connected to the first auxiliary power supply, which is determined based on the rated voltage range of the power conversion subsystem.

[0011] The DC compartment is connected to the second auxiliary power supply, which is determined based on the rated voltage range of the DC compartment.

[0012] The energy management subsystem is connected to the third auxiliary power supply, which is determined based on the rated voltage range of the energy management subsystem.

[0013] Thus, the power conversion subsystem is connected to the first auxiliary power supply, which is determined based on the rated voltage range of the power conversion subsystem. Next, the DC module is connected to the second auxiliary power supply, which is determined based on the rated voltage range of the DC module. Finally, the energy management subsystem is connected to the third auxiliary power supply, which is determined based on the rated voltage range of the energy management subsystem. By connecting different auxiliary power supplies to different modules of the energy storage system according to their rated voltage ranges, the test environment is made consistent with the real-world operating scenario, ensuring that subsequent test data accurately reflects the actual operating performance of the subsystem and improving the reliability of the test results.

[0014] In some implementations, the basic test environment further includes virtual local area network (VLAN) information, which includes a first VLAN, a second VLAN, and a third VLAN. The basic test environment for configuring the energy storage system includes:

[0015] The DC compartment, the power conversion subsystem, and the energy management subsystem are connected to different ports of the switch using pre-defined network cables.

[0016] Based on the switch, the DC compartment is assigned to the first virtual local area network;

[0017] Based on the switch, the power conversion subsystem is assigned to the second virtual local area network;

[0018] Based on the switch, the energy management subsystem is divided into the third virtual local area network (VLAN), and the first VLAN, the second VLAN, and the third VLAN are different.

[0019] Thus, using pre-configured network cables, the DC module, power conversion subsystem, and energy management subsystem are connected to different ports on the switch. Next, based on the switch, the DC module is assigned to the first virtual local area network (VLAN). Then, based on the switch, the power conversion subsystem is assigned to the second VLAN. Finally, based on the switch, the energy management subsystem is assigned to the third VLAN. The first, second, and third VLANs are distinct. By assigning the DC module, power conversion subsystem, and energy management subsystem to independent VLANs, mutual interference in data transmission between different modules can be prevented, ensuring network security and providing a foundation for stable network connections between the DC module, power conversion subsystem, and energy management subsystem.

[0020] In some embodiments, the basic test environment further includes network information, which includes network addresses and communication protocols. The network addresses include a first network address, a second network address, and a third network address, and the communication protocols include a first communication protocol, a second communication protocol, and a third communication protocol. The basic test environment for configuring the energy storage system includes:

[0021] Configure the first network address of the energy management subsystem, the second network address of the DC module, and the third network address of the power conversion subsystem;

[0022] Configure the first communication protocol between the energy management subsystem and the DC module, the second communication protocol between the energy management subsystem and the power conversion subsystem, and the third communication protocol between the power conversion subsystem and the DC module.

[0023] Thus, the first network address of the energy management subsystem, the second network address of the DC module, and the third network address of the power conversion subsystem are configured. Next, the first communication protocol between the energy management subsystem and the DC module, the second communication protocol between the energy management subsystem and the power conversion subsystem, and the third communication protocol between the power conversion subsystem and the DC module are configured. By configuring the network addresses of each module in the energy storage system and the communication protocols between them, it is ensured that each module has a unique identifier within the local area network and that data formats and transmission rules are consistent, thereby achieving a stable network connection between the DC module, the power conversion subsystem, and the energy management subsystem.

[0024] In some implementations, the target test object includes the communication status and operational performance status of the energy storage system. The step of adjusting the basic test environment according to the selected target test object, once the basic test environment configuration is complete, to determine a target test environment matching the target test object, includes:

[0025] When the target test object is in the communication state, the basic test environment is determined as the target test environment;

[0026] When the target test object is the operating performance state, the basic test environment is adjusted to determine the target test environment that matches the operating performance state.

[0027] Thus, when the target test object is in a communication state, the basic test environment is determined as the target test environment. Next, when the target test object is in a performance state, the basic test environment is adjusted to determine a target test environment that matches the performance state. In this way, configuring different target test environments for different test objects, and only adjusting the basic test environment when testing performance, can improve resource utilization and control testing costs.

[0028] In some implementations, adjusting the basic test environment to determine a target test environment that matches the operating performance state when the target test object is in that state includes:

[0029] A preset step-up transformer is connected between the first auxiliary power supply and the power conversion subsystem, wherein the preset step-up transformer is used to boost the voltage value of the first auxiliary power supply to the rated voltage value of the power conversion subsystem;

[0030] An electrical connection is established between the DC compartment and the power conversion subsystem based on a pre-defined cable specification.

[0031] Thus, a pre-set step-up transformer is connected between the first auxiliary power supply and the power conversion subsystem. This transformer boosts the voltage of the first auxiliary power supply to the rated voltage of the power conversion subsystem. Next, an electrical connection is established between the DC compartment and the power conversion subsystem using pre-set specification cables. This connection, through the pre-set specification cables and the pre-set step-up transformer, allows the use of existing low-voltage power supplies in scenarios such as factories to simulate the actual operating conditions of the energy storage system, thereby ensuring that the test results of the energy storage system's operational performance have practical reference value.

[0032] In some implementations, the communication state includes data reading state, communication connection state, command transmission state, and protocol adaptation state. The step of testing the target test object of the energy storage system under the target test environment includes:

[0033] When the target test object is in the communication state, the energy storage system is tested for its data reading state, communication connection state, command transmission state, and protocol adaptation state under the target test environment.

[0034] Thus, with the target test object in a communication state, the data reading state, communication connection state, command transmission state, and protocol adaptation state of the energy storage system are tested under the target test environment. This comprehensive testing of the energy storage system's communication functions across four dimensions—data reading state, communication connection state, command transmission state, and protocol adaptation state—ensures that the communication state meets the collaborative operation requirements of the energy storage system.

[0035] In some embodiments, the operating performance state includes the charge / discharge state of the energy storage system, and the testing of the target test object of the energy storage system under the target test environment includes:

[0036] When the target test object is in the charging / discharging state, the charging / discharging process is initiated by issuing a command through the power conversion subsystem;

[0037] Monitor and record the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery in the DC compartment;

[0038] Based on the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery, abnormal conditions of the charging and discharging state are determined.

[0039] Thus, when the target test object is in a charging / discharging state, the charging / discharging process is initiated by issuing commands through the power conversion subsystem. Next, the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery in the DC compartment, are monitored and recorded. Finally, based on the current and voltage of the power conversion subsystem, and the temperature and state of charge of the energy storage battery, any abnormal charging / discharging conditions are identified. In this way, by simulating real charging / discharging conditions under the target test environment, the test data for the charging / discharging state can accurately reflect the charging / discharging performance of the energy storage system.

[0040] In some implementations, determining abnormal charging / discharging states based on the current and voltage of the power conversion subsystem, and the temperature and state of charge of the energy storage battery, includes:

[0041] The current fluctuation amplitude is determined based on the current of the power conversion subsystem.

[0042] The voltage fluctuation amplitude is determined based on the voltage of the power conversion subsystem.

[0043] The state of charge fluctuation amplitude is determined based on the state of charge of the energy storage battery.

[0044] If at least one of the following conditions is met: the current fluctuation amplitude is greater than or equal to a preset current fluctuation threshold, the voltage fluctuation amplitude is greater than or equal to a preset voltage fluctuation threshold, the temperature of the energy storage battery is greater than or equal to a preset temperature threshold, and the state of charge fluctuation amplitude is greater than or equal to a preset state of charge fluctuation threshold, then the charging and discharging state is determined to be abnormal.

[0045] Thus, the current fluctuation amplitude is determined based on the current of the power conversion subsystem. Next, the voltage fluctuation amplitude is determined based on the voltage of the power conversion subsystem. Then, the state of charge (SOC) fluctuation amplitude is determined based on the SOC of the energy storage battery. Finally, if at least one of the following conditions is met—current fluctuation amplitude greater than or equal to a preset current fluctuation threshold, voltage fluctuation amplitude greater than or equal to a preset voltage fluctuation threshold, energy storage battery temperature greater than or equal to a preset temperature threshold, or SOC fluctuation amplitude greater than or equal to a preset SOC fluctuation threshold—an anomaly in the charging / discharging state is determined. In this way, by converting raw data such as current into quantifiable data and performing multi-dimensional judgments, misjudgments caused by single parameters can be avoided, and the risk points in the charging / discharging process of the energy storage system can be comprehensively covered, reducing the number of missed anomaly detections.

[0046] In some embodiments, the method further includes:

[0047] If an abnormality occurs in the charging / discharging state, the charging / discharging process is terminated, and an abnormality message is generated.

[0048] In this way, if an abnormality occurs during charging or discharging, the charging or discharging process is terminated, and an abnormality message is generated. This allows energy transfer to be cut off at the initial stage of an abnormality, preventing consequences such as overheating of the energy storage battery and insulation breakdown of the equipment, thus ensuring the safety of testing personnel and equipment.

[0049] In some implementations, the operating performance state includes the power regulation state of the energy storage system, and the testing of the target test object of the energy storage system under the target test environment includes:

[0050] When the target test object is in the power regulation state, the electrical parameter thresholds of the battery management subsystem in the DC compartment are modified.

[0051] Monitor and record the output power of the energy storage system;

[0052] If the output power meets the preset load requirements, the power regulation state is determined to be normal.

[0053] Thus, when the target test object is in a power regulation state, the electrical parameter thresholds of the battery management subsystem in the DC compartment are modified. Next, the output power of the energy storage system is monitored and recorded. Then, if the output power meets the preset load requirements, the power regulation state is determined to be normal. In this way, by monitoring the output power after the electrical parameter thresholds are modified, the speed and accuracy of power regulation can be quantitatively evaluated, ensuring that the energy storage system can quickly adapt to load changes or battery state fluctuations during actual operation.

[0054] In some embodiments, the method further includes:

[0055] A protection device is connected between the preset step-up transformer and the first auxiliary power supply to ensure that the operating voltage of the energy storage system is within the preset electrical parameter safety range.

[0056] Thus, a protection device is connected between the pre-set step-up transformer and the first auxiliary power supply to ensure that the operating voltage of the energy storage system remains within the preset safe range of electrical parameters. This allows for the timely interruption of dangerous currents, effectively preventing accidents such as electric shock and fire, and ensuring the personal safety of testing personnel.

[0057] This application provides an electronic device, which includes a processor and a memory. The memory stores a computer program, and the processor executes the computer program to implement the steps of the method described above.

[0058] This application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the steps of the method described above.

[0059] Additional aspects and advantages of embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of embodiments of this application. Attached Figure Description

[0060] The above and additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0061] Figure 1 This is one of the flowcharts illustrating the energy storage system testing method according to certain embodiments of this application;

[0062] Figure 2 This is a second schematic flowchart of a testing method for an energy storage system according to certain embodiments of this application;

[0063] Figure 3 This is the third flowchart illustrating the energy storage system testing method according to certain embodiments of this application;

[0064] Figure 4 This is the fourth flowchart illustrating the energy storage system testing method according to certain embodiments of this application;

[0065] Figure 5 This is the fifth flowchart illustrating the energy storage system testing method according to certain embodiments of this application;

[0066] Figure 6 This is the sixth flowchart illustrating the energy storage system testing method according to certain embodiments of this application;

[0067] Figure 7 This is one of the structural schematic diagrams of an energy storage system according to certain embodiments of this application;

[0068] Figure 8 This is the seventh flowchart illustrating the energy storage system testing method according to certain embodiments of this application;

[0069] Figure 9 This is a second schematic diagram of the energy storage system according to certain embodiments of this application;

[0070] Figure 10 This is the eighth flowchart illustrating the energy storage system testing method according to certain embodiments of this application;

[0071] Figure 11 This is the ninth flowchart illustrating the energy storage system testing method of certain embodiments of this application;

[0072] Figure 12 This is the tenth flowchart illustrating the energy storage system testing method according to certain embodiments of this application;

[0073] Figure 13This is eleventh of the flowcharts illustrating the energy storage system testing method according to certain embodiments of this application;

[0074] Figure 14 This is the twelfth flowchart of a testing method for an energy storage system according to certain embodiments of this application. Detailed Implementation

[0075] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the embodiments of this application, and should not be construed as limiting the embodiments of this application.

[0076] In the actual deployment and application of energy storage systems, the commissioning phase is a prerequisite for ensuring the subsequent stable and efficient operation of the system. The goal of commissioning is to verify the various performance indicators of the energy storage system under real grid-connected conditions. In related technologies, the commissioning of energy storage systems generally relies on high-voltage grid connection points such as 10kV and 35kV. This involves establishing a tight electrical connection between the energy storage system and the high-voltage grid to achieve precise adaptation of key parameters such as voltage, frequency, and phase between the system and the grid. This allows for comprehensive testing of the energy storage system's charging and discharging control accuracy and power regulation response speed. This requires not only that the energy storage system itself possess dedicated electrical interfaces and complex control logic compatible with the high-voltage grid, but also that it be equipped with high-precision parameter monitoring equipment and a professional high-voltage operation team to ensure the safety of the commissioning process and the accuracy of the test results.

[0077] However, in testing scenarios such as factories, the core design of the internal power supply system is to meet the basic power needs of daily production equipment operation, lighting, and office work. Their power supply configurations are mostly low-voltage systems based on 380V mains power, generally lacking the infrastructure for 10kV or 35kV high-voltage grid connection points. This power supply pattern is formed after comprehensive consideration of multiple factors such as the factory's production scale, equipment power requirements, and initial construction costs, and represents a long-term stable configuration mode, making it difficult to carry out large-scale grid upgrades during the energy storage system commissioning phase.

[0078] If factories and other similar settings need to construct high-voltage grid connection points for energy storage system commissioning, it will require significant investment and a long timeframe. Furthermore, the construction of high-voltage grid connection points may be constrained by existing site space, power line layout, and other objective conditions in such settings, further increasing the difficulty and uncertainty of the modification.

[0079] Based on the above issues, please refer to Figure 1 This application provides a testing method for an energy storage system, the method comprising:

[0080] 01: Configure the basic test environment for the energy storage system;

[0081] 02: Once the basic test environment is configured, adjust the basic test environment according to the selected target test object to determine the target test environment that matches the target test object;

[0082] 03: Test the target test object of the energy storage system in the target test environment.

[0083] This application also provides an electronic device, including a memory and a processor. The energy storage system testing method of this application can be implemented by the electronic device of this application. Specifically, the memory stores a computer program, and the processor is used to configure the basic test environment of the energy storage system. After the basic test environment is configured, the basic test environment is adjusted according to the selected target test object to determine a target test environment that matches the target test object. And the target test object of the energy storage system is tested under the target test environment.

[0084] This application also provides an energy storage system testing apparatus. The energy storage system testing method of this application can be implemented by the energy storage system testing apparatus of this application. Specifically, the energy storage system testing apparatus includes a configuration module, a determination module, and a testing module. The configuration module is used to configure the basic test environment of the energy storage system. The determination module, after the basic test environment is configured, adjusts the basic test environment according to the selected target test object to determine a target test environment that matches the target test object. The testing module is used to test the target test object of the energy storage system under the target test environment.

[0085] Specifically, an energy storage system refers to a system capable of storing, converting, and managing electrical energy, including a DC module, a power conversion subsystem, and an energy management subsystem.

[0086] A DC compartment refers to a unit in an energy storage system that houses the energy storage battery pack and related battery management components. It integrates the energy storage battery pack and the Battery Management System (BMS), which is responsible for storing DC power and monitoring parameters such as battery voltage, temperature, and state of charge in real time to ensure the safe and stable operation of the battery.

[0087] The Power Conversion System (PCS) refers to the power conversion unit of an energy storage system, which is used to realize bidirectional conversion between DC and AC power, and also undertakes tasks such as charge and discharge control, power regulation and fault protection.

[0088] The Energy Management System (EMS) is responsible for coordinating the work of all modules, including the operation of the DC module and the power conversion subsystem. It acquires status data of each unit through the communication network and issues control commands such as start-up, shutdown, and charging / discharging power to ensure that the energy storage system operates according to the preset strategy.

[0089] The basic test environment refers to the set of basic configurations for conducting energy storage system tests, including the test voltages that power each subsystem, which serves as the baseline configuration for subsequent tests.

[0090] Test voltage refers to the voltage source that provides operating power to each subsystem of the energy storage system. Its value is not fixed, but is determined according to the power consumption standards of the actual deployment scenario of the system.

[0091] The voltage specifications of the testing site refer to the power supply voltage standards of energy storage system testing sites such as factories, including 380V mains power in industrial scenarios and 220V mains power in residential scenarios.

[0092] The target test object refers to the functions or performance indicators of the energy storage system that need to be verified, including communication connection reliability, charging and discharging efficiency, and power regulation accuracy.

[0093] The target test environment refers to the test configuration that is adjusted and optimized based on the basic test environment for a specific target test object, so as to ensure that the environmental conditions are accurately matched with the test requirements and to guarantee the validity of the test results.

[0094] Traditional energy storage system testing methods rely on high-voltage grid connection points such as 10kV and 35kV, requiring a tight electrical connection to the high-voltage grid to complete the performance verification of the energy storage batteries. The energy storage system testing method provided in this application first configures a basic test environment based on the voltage specifications of the energy storage system test site, then adjusts it to form a target test environment according to the specific target test object, and finally completes targeted testing in the adapted environment, achieving energy storage system performance verification without relying on a high-voltage grid connection point.

[0095] First, by checking the power supply voltage specifications of the actual test site for the energy storage system, test voltages compatible with these specifications are provided for the DC compartment, power conversion subsystem, and energy management subsystem. This eliminates the need to rely on 10kV or 35kV high-voltage grid connection points; testing can be conducted using the existing low-voltage power supply at the test site, saving the high costs and lengthy time required for grid upgrades.

[0096] Next, based on the testing requirements, a target test object is selected, and the basic testing environment is adjusted accordingly to determine a target testing environment that matches the target test object. In this way, the testing environment can be flexibly adjusted according to different target test objects to meet diverse testing needs.

[0097] Finally, in the target test environment, the selected target test object is comprehensively verified. The energy management subsystem acquires operational data from each subsystem of the energy storage system, monitors parameter changes during the test process, determines whether the energy storage system meets design requirements, and completes the test loop.

[0098] Virtual LAN information refers to logical network partitioning information created by switches. This allows different functional modules, namely the DC module, power conversion subsystem, and energy management subsystem, to be isolated in independent network areas, avoiding data conflicts and interference, and improving network security and stability.

[0099] Network information, including network addresses and communication protocols, is the fundamental parameter for data transmission and command interaction between various functional modules, ensuring normal network connectivity and compatible data exchange.

[0100] In summary, the energy storage system testing method and electronic equipment provided in this application configure a basic testing environment for the energy storage system. This basic testing environment includes a test voltage, the value of which is determined based on the voltage specifications of the testing location where the energy storage system is located. Next, after the basic testing environment is configured, it is adjusted according to the selected target test object to determine a target testing environment that matches the target test object. Finally, the target test object of the energy storage system is tested under the target testing environment. In this way, by using a test voltage that meets the voltage specifications of the testing location where the energy storage system is located, it is not necessary to rely on 10kV or 35kV high-voltage grid connection points, thus avoiding the need for high-voltage grid modifications to energy storage system testing scenarios such as factories, thereby reducing testing costs and testing cycles. Furthermore, the testing environment can be flexibly adjusted according to different target test objects, covering the energy storage system commissioning process and meeting diverse testing needs. In addition, configuring the basic testing environment based on the low-voltage power supply of the testing location where the energy storage system is located avoids the electrical risks associated with high-voltage operation, and through targeted environmental adjustments, ensures the safety and controllability of each testing stage.

[0101] Please see Figure 2 In some implementations, the energy storage system includes a DC module, a power conversion subsystem, and an energy management subsystem. The test voltage includes a first auxiliary power supply, a second auxiliary power supply, and a third auxiliary power supply. Step 01 (configuring the basic test environment for the energy storage system) includes:

[0102] 011: Connect the power conversion subsystem to the first auxiliary power supply;

[0103] 012: Connect the DC module to the second auxiliary power supply;

[0104] 013: Connect the energy management subsystem to the third auxiliary power supply.

[0105] In some implementations, the processor is also configured to connect the power conversion subsystem to a first auxiliary power supply, connect the DC module to a second auxiliary power supply, and connect the energy management subsystem to a third auxiliary power supply.

[0106] In some implementations, the configuration module is also used to connect the power conversion subsystem to a first auxiliary power source, the DC module to a second auxiliary power source, and the energy management subsystem to a third auxiliary power source.

[0107] Specifically, the first auxiliary power supply refers to the low-voltage power supply that provides working power to the power conversion subsystem. Its voltage value must strictly fall within the rated voltage range of the power conversion subsystem and meet the power voltage specifications of the test site. The voltage specification is usually 380V to ensure that the power conversion subsystem can start normally and perform energy conversion functions.

[0108] The second auxiliary power supply refers to the low-voltage power supply that provides working power to the DC compartment. Its voltage value must strictly fall within the rated voltage range of the DC compartment and meet the power voltage specifications of the test site. The voltage specification is usually 380V to ensure the stable realization of basic functions such as energy storage and status monitoring of the DC compartment.

[0109] The third auxiliary power supply refers to the low-voltage power supply that provides working power to the energy management subsystem. Its voltage value must strictly fall within the rated voltage range of the energy management subsystem and meet the power voltage specifications of the test site. The voltage specification is usually 220V.

[0110] Before testing, the rated voltage ranges of the DC module, power conversion subsystem, and energy management subsystem were obtained by consulting energy storage system design manuals or equipment nameplates. Then, based on the rated voltage ranges and the power supply specifications of the test site, the voltage values ​​of the first, second, and third auxiliary power supplies were determined. The power input terminal of the power conversion subsystem was connected to the first auxiliary power supply, the power interface of the DC module was connected to the second auxiliary power supply, and the power supply port of the energy management subsystem was connected to the third auxiliary power supply.

[0111] Thus, the power conversion subsystem is connected to the first auxiliary power supply, which is determined based on the rated voltage range of the power conversion subsystem. Next, the DC module is connected to the second auxiliary power supply, which is determined based on the rated voltage range of the DC module. Finally, the energy management subsystem is connected to the third auxiliary power supply, which is determined based on the rated voltage range of the energy management subsystem. By connecting different auxiliary power supplies to different modules of the energy storage system according to their rated voltage ranges, the test environment is made consistent with the real-world operating scenario, ensuring that subsequent test data accurately reflects the actual operating performance of the subsystem and improving the reliability of the test results.

[0112] Please see Figure 3In some implementations, the basic test environment also includes virtual local area network (VLAN) information, which includes a first VLAN, a second VLAN, and a third VLAN. Step 01 (configuring the basic test environment for the energy storage system) includes:

[0113] 014: Connect the DC compartment, power conversion subsystem, and energy management subsystem to different ports of the switch using pre-defined network cables;

[0114] 015: Based on the switch, assign the DC compartment to the first virtual local area network;

[0115] 016: Based on the switch, the power conversion subsystem is assigned to the second virtual local area network;

[0116] 017: Based on the switch, the energy management subsystem is divided into a third virtual local area network.

[0117] In some implementations, the processor is also configured to connect the DC module, power conversion subsystem, and energy management subsystem to different ports of a switch via pre-defined network cables. And, based on the switch, to assign the DC module to a first virtual local area network (VLAN). The processor is also configured to assign the power conversion subsystem to a second VLAN based on the switch. And, based on the switch, to assign the energy management subsystem to a third VLAN.

[0118] In some implementations, the configuration module is further configured to connect the DC module, power conversion subsystem, and energy management subsystem to different ports of a switch via pre-defined network cables. It also configures the DC module to be assigned to a first virtual local area network (VLAN) based on the switch. The configuration module is further configured to assign the power conversion subsystem to a second VLAN based on the switch. Finally, it configures the energy management subsystem to a third VLAN based on the switch.

[0119] Specifically, a pre-defined specification network cable refers to a network cable that conforms to specific transmission standards and can meet the data transmission requirements of energy storage system testing. It needs to have characteristics such as low signal attenuation and strong anti-interference capabilities. In some implementations, the pre-defined specification network cable is typically a Category 5e or Category 6a cable, and its length needs to be controlled within a reasonable range, such as within 50 meters, to ensure transmission quality.

[0120] As a connection device for the energy storage system test network, the switch can aggregate network signals from the DC compartment, power conversion subsystem, and energy management subsystem, realize data forwarding and distribution, support virtual LAN partitioning function, and is a key hardware for building an isolated network.

[0121] Different ports refer to physically independent network interfaces on a switch. Each port corresponds to a unique connection channel. By connecting different subsystems to different ports, a physical basis is provided for the subsequent division of independent virtual LANs.

[0122] A Virtual Local Area Network (VLAN) is a logically independent network created by configuring switches on top of a physical network. Devices within the same VLAN can communicate freely, while communication between different VLANs requires specific authorization, thus achieving network isolation and security control.

[0123] The first virtual local area network refers to the logical network area allocated to the DC module, which is used to carry dedicated data interaction between the DC module and other subsystems, ensuring the independence of data such as battery status monitoring and battery protection command transmission.

[0124] The second virtual local area network refers to the logical network area partitioned for the power conversion subsystem, focusing on the transmission of power conversion-related data, including charging and discharging control commands and power parameter feedback.

[0125] The third virtual local area network refers to the logical network area allocated for the energy management subsystem. As the core network area for data processing and command issuance, it carries the transmission of data related to overall coordination.

[0126] Furthermore, the fact that the first, second, and third virtual LANs are different indicates that the virtual LANs cannot directly exchange data. Limited communication can only be achieved through the routing configuration or authorization rules of the switch to achieve the effect of physical isolation.

[0127] First, the DC module, power conversion subsystem, and energy management subsystem are connected to different ports of the switch using pre-specified network cables. This enhances data transmission speed and interference immunity, reducing signal attenuation and data loss during testing and ensuring the integrity of the original data transmission. Furthermore, connecting these three subsystems to different ports on the switch avoids physical interference between their signals, and allocating an independent transmission channel for each subsystem ensures smooth data transmission.

[0128] Next, using the virtual LAN (VLAN) partitioning function of the switch, the DC module, power conversion subsystem, and energy management subsystem are respectively divided into the first VLAN, the second VLAN, and the third VLAN. This logically isolates the network environments of the three subsystems, ensuring that data transmission within each VLAN is unaffected by other VLANs, thus avoiding data conflicts and network congestion.

[0129] Thus, using pre-configured network cables, the DC module, power conversion subsystem, and energy management subsystem are connected to different ports on the switch. Next, based on the switch, the DC module is assigned to the first virtual local area network (VLAN). Then, based on the switch, the power conversion subsystem is assigned to the second VLAN. Finally, based on the switch, the energy management subsystem is assigned to the third VLAN. The first, second, and third VLANs are distinct. By assigning the DC module, power conversion subsystem, and energy management subsystem to independent VLANs, mutual interference in data transmission between different modules can be prevented, ensuring network security and providing a foundation for stable network connections between the DC module, power conversion subsystem, and energy management subsystem.

[0130] Please see Figure 4 In some implementations, the basic test environment also includes network information, which includes network addresses and communication protocols. The network addresses include a first network address, a second network address, and a third network address, and the communication protocols include a first communication protocol, a second communication protocol, and a third communication protocol. Step 01 (Configuring the basic test environment for the energy storage system) includes:

[0131] 018: Configure the first network address of the energy management subsystem, the second network address of the DC module, and the third network address of the power conversion subsystem;

[0132] 019: Configure the first communication protocol between the energy management subsystem and the DC module, the second communication protocol between the energy management subsystem and the power conversion subsystem, and the third communication protocol between the power conversion subsystem and the DC module.

[0133] In some embodiments, the processor is also configured to configure a first network address for the energy management subsystem, a second network address for the DC module, and a third network address for the power conversion subsystem; and to configure a first communication protocol between the energy management subsystem and the DC module, a second communication protocol between the energy management subsystem and the power conversion subsystem, and a third communication protocol between the power conversion subsystem and the DC module.

[0134] In some embodiments, the configuration module is also used to configure a first network address of the energy management subsystem, a second network address of the DC module, and a third network address of the power conversion subsystem. It also configures a first communication protocol between the energy management subsystem and the DC module, a second communication protocol between the energy management subsystem and the power conversion subsystem, and a third communication protocol between the power conversion subsystem and the DC module.

[0135] Specifically, the first network address refers to the unique network identifier assigned to the energy management subsystem, usually an IP address, used to accurately locate the energy management subsystem in the test network.

[0136] The second network address refers to the unique network identifier assigned to the DC module. It is the communication address used by other subsystems to interact with the DC module. It can accurately locate the DC module in the test network and ensure the transmission of battery-related data.

[0137] The third network address refers to the unique network identifier assigned to the power conversion subsystem, which can identify the location of the power conversion subsystem in the network and ensure the transmission of data such as charging and discharging control commands and power parameters.

[0138] The first communication protocol refers to the rules and standards for data interaction between the energy management subsystem and the DC module, including data format, transmission rate and verification method, which can ensure the transmission and parsing of data such as battery status monitoring and protection command issuance between the two.

[0139] The second communication protocol refers to the interaction rules between the energy management subsystem and the power conversion subsystem. It adapts to the transmission requirements of power control-related data and can ensure the transmission and parsing of charging and discharging commands, power feedback information, etc.

[0140] The third communication protocol refers to the interaction rules between the power conversion subsystem and the DC module, including data format, transmission rate, and verification method, which can ensure the transmission and parsing of data such as battery voltage and current signals between the two.

[0141] For example, the first network address could be 192.168.10.1, the second network address could be 192.168.20.1, and the third network address could be 192.168.30.1. The first communication protocol could be ModbusTCP, the second communication protocol could be IEC61850, and the third communication protocol could be CANopen.

[0142] Thus, the first network address of the energy management subsystem, the second network address of the DC module, and the third network address of the power conversion subsystem are configured. Next, the first communication protocol between the energy management subsystem and the DC module, the second communication protocol between the energy management subsystem and the power conversion subsystem, and the third communication protocol between the power conversion subsystem and the DC module are configured. By configuring the network addresses of each module in the energy storage system and the communication protocols between them, it is ensured that each module has a unique identifier within the local area network and that data formats and transmission rules are consistent, thereby achieving a stable network connection between the DC module, the power conversion subsystem, and the energy management subsystem.

[0143] Please see Figure 5 In some implementations, the target test object includes the communication status and operational performance status of the energy storage system. Step 02 (assuming the basic test environment configuration is complete, adjusting the basic test environment according to the selected target test object to determine the target test environment matching the target test object) includes:

[0144] 021: When the target test object is in a communication state, the basic test environment is determined as the target test environment;

[0145] 022: When the target test object is in its running performance state, adjust the basic test environment to determine the target test environment that matches the running performance state.

[0146] In some implementations, the processor is further configured to determine the basic test environment as the target test environment when the target test object is in a communication state, and to adjust the basic test environment to determine a target test environment that matches the operation performance state when the target test object is in an operation performance state.

[0147] In some implementations, the determining module is further configured to determine the basic test environment as the target test environment when the target test object is in a communication state, and to adjust the basic test environment to determine a target test environment that matches the operation performance state when the target test object is in an operation performance state.

[0148] Specifically, communication status refers to the reliability and effectiveness of data interaction and command transmission between the DC module, power conversion subsystem, and energy management subsystem in the energy storage system.

[0149] Operational performance status refers to the performance of an energy storage system during energy conversion, storage, and scheduling, and it needs to be tested through actual energy interaction processes.

[0150] Adjusting the basic test environment refers to adding hardware devices, optimizing connection methods, or supplementing parameter configurations based on the existing configuration of the basic test environment to meet the testing requirements of the operating performance status, so that the environment has the conditions for energy interaction testing.

[0151] First, clearly define the target test object of the energy storage system. Then, based on the already configured basic test environment, flexibly handle the different needs of the test object: if the target test object is in a communication state, directly use the basic test environment. If the target test object is in an operational performance state, make targeted adjustments to the basic environment to form a target test environment that precisely matches the test object.

[0152] Thus, when the target test object is in a communication state, the basic test environment is determined as the target test environment. Next, when the target test object is in a performance state, the basic test environment is adjusted to determine a target test environment that matches the performance state. In this way, configuring different target test environments for different test objects, and only adjusting the basic test environment when testing performance, can improve resource utilization and control testing costs.

[0153] Please see Figure 6 In some implementations, step 022 (adjusting the basic test environment to determine a target test environment that matches the operating performance state when the target test object is in a running performance state) includes:

[0154] 0221: A pre-set step-up transformer is connected between the first auxiliary power supply and the power conversion subsystem;

[0155] 0222: Establish an electrical connection between the DC compartment and the power conversion subsystem based on the preset cable specifications.

[0156] In some implementations, the configuration module is also used to connect a preset step-up transformer between the first auxiliary power supply and the power conversion subsystem, and to establish an electrical connection between the DC compartment and the power conversion subsystem based on preset specification cables.

[0157] In some implementations, the processor is also used to connect a preset step-up transformer between the first auxiliary power supply and the power conversion subsystem, and to establish an electrical connection between the DC compartment and the power conversion subsystem based on preset specification cables.

[0158] Specifically, the preset step-up transformer refers to a voltage conversion device designed for power testing. Its input voltage is adapted to the primary auxiliary power supply of the test site, and its output provides a high voltage sufficient to meet the operational requirements of the power conversion subsystem. It can boost the low-voltage power supply of the test site to the rated voltage of the power conversion subsystem, thereby simulating the low-power operating environment of an energy storage battery. In some embodiments, the high voltage at the output of the preset step-up transformer can be 690V.

[0159] Pre-defined specification cables refer to cables that meet the high-power power transmission requirements of energy storage systems. They are characterized by low resistance, high insulation, and high temperature resistance. Their cross-sectional specifications, withstand voltage ratings, and other parameters are matched to ensure the stability and safety of power transmission.

[0160] Electrical connection refers to the physical conductive path established between the DC compartment and the power conversion subsystem through a cable of preset specifications, providing a basis for subsequent testing.

[0161] While the basic test environment can meet the requirements for communication status testing, it cannot support operational performance status testing because the voltage of the primary auxiliary power supply is usually lower than the rated voltage of the power conversion subsystem, and there is no energy transfer path between the DC compartment and the power conversion subsystem. Forcing operational performance testing in the basic environment could damage the power conversion subsystem control module due to voltage mismatch, posing a safety risk.

[0162] Please see Figure 7 , Figure 7This is a schematic diagram of the energy storage system under operating performance conditions as the target test object. First, based on the rated voltage of the power conversion subsystem and the voltage of the first auxiliary power supply, a preset step-up transformer with matching turns ratio is selected to ensure that its output voltage meets the rated voltage of the power conversion subsystem. Then, the low-voltage input terminal of the preset step-up transformer is connected to the power supply line of the first auxiliary power supply, and the high-voltage output terminal of the preset step-up transformer is connected to the power input terminal of the power conversion subsystem.

[0163] Simultaneously, based on the transmission power and voltage level between the DC compartment and the power conversion subsystem, a pre-defined cable specification is selected. One end of the pre-defined cable is connected to the positive and negative output terminals of the DC compartment, and the other end is connected to the positive and negative input terminals of the power conversion subsystem.

[0164] Subsequently, the target test environment was integrated. After completing the transformer access and electrical connection setup, the virtual LAN configuration, network information configuration, and auxiliary power supply of each subsystem in the basic test environment were retained.

[0165] Finally, the operational performance of the energy storage system is tested. This is achieved by receiving control commands from the energy management subsystem through the power conversion subsystem under high voltage conditions, enabling bidirectional conversion between DC and AC power, and collecting battery status data from the DC compartment, thus completing the test of the energy storage system's operational performance.

[0166] Thus, a pre-set step-up transformer is connected between the first auxiliary power supply and the power conversion subsystem. This transformer boosts the voltage of the first auxiliary power supply to the rated voltage of the power conversion subsystem. Next, an electrical connection is established between the DC compartment and the power conversion subsystem using pre-set specification cables. This connection, through the pre-set specification cables and the pre-set step-up transformer, allows the use of existing low-voltage power supplies in scenarios such as factories to simulate the actual operating conditions of the energy storage system, thereby ensuring that the test results of the energy storage system's operational performance have practical reference value.

[0167] Please see Figure 8 In some implementations, the communication status includes data reading status, communication connection status, command transmission status, and protocol adaptation status. Step 03 (testing the target test object of the energy storage system under the target test environment) includes:

[0168] 031: When the target test object is in a communication state, test the data reading status, communication connection status, command transmission status and protocol adaptation status of the energy storage system under the target test environment.

[0169] In some implementations, the test module is also used to test the data reading status, communication connection status, command transmission status, and protocol adaptation status of the energy storage system under the target test environment when the target test object is in a communication state.

[0170] In some implementations, the processor is also used to test the data reading status, communication connection status, instruction transmission status, and protocol adaptation status of the energy storage system under the target test environment when the target test object is in a communication state.

[0171] Specifically, the data reading status refers to the smoothness and accuracy of the energy management subsystem's acquisition of operating data from the DC module and power conversion subsystem, including whether the data is complete and whether there is any delay / loss.

[0172] Communication connection status refers to the stability of the connection established by the DC module, power conversion subsystem, and energy management subsystem through the network, including whether the connection is continuous and whether it is frequently disconnected and reconnected.

[0173] Command transmission status refers to the state of whether the control commands issued by the energy management subsystem can be accurately and timely transmitted to the DC module and power conversion subsystem.

[0174] Protocol compatibility status refers to whether the communication protocols configured between the subsystems are compatible and whether data can be encoded and decoded normally.

[0175] Please see Figure 9 , Figure 9 This is a schematic diagram of the energy storage system when the target test object is in a communication state. After completing power supply access, virtual LAN information configuration, and network information configuration, if the target test object is determined to be in a communication state, the communication state information test should be carried out according to the following procedure:

[0176] Conduct communication connectivity tests: Activate the network modules of the DC module, power conversion subsystem, and energy management subsystem. Monitor the connection status between the three subsystems through the switch's management interface or network testing tools. Continuously observe the connection stability over a certain period, recording data such as the number of connection drops and reconnection success rate to determine if there are any connection anomalies caused by improper network configuration or hardware interface problems.

[0177] Conduct protocol adaptation status testing: Based on the configured first, second, and third communication protocols, perform cross-subsystem protocol interaction tests. The energy management subsystem sends a protocol adaptation request to the DC module, verifying whether the encoded data can be correctly decoded by the DC module and a response can be provided. Similarly, test the protocol compatibility between the energy management subsystem and the power conversion subsystem, and between the power conversion subsystem and the DC module, checking for issues such as data parsing errors and abnormal response formats.

[0178] Conduct data acquisition status tests: Initiate data acquisition commands through the energy management subsystem to read parameters such as battery voltage, temperature, and state of charge of the DC module, as well as operating status parameters of the power conversion subsystem, such as standby status and fault codes. Record data transmission delay, data integrity, and accuracy to evaluate the reliability of the data acquisition function.

[0179] Conduct command transmission status testing: The energy management subsystem sends status query commands to the DC module and standby start commands to the power conversion subsystem, monitoring the real-time performance and execution effectiveness of the command transmission. Check whether the DC module can promptly provide status information and whether the power conversion subsystem can switch operating modes according to the commands. Simultaneously record command transmission failures or execution anomalies to investigate for command coding errors or transmission link interference.

[0180] It should be noted that during the testing process, all kinds of abnormal situations need to be marked and recorded, and the scenarios, frequencies and manifestations of the abnormalities should be clearly identified to provide a basis for subsequent troubleshooting.

[0181] Thus, with the target test object in a communication state, the data reading state, communication connection state, command transmission state, and protocol adaptation state of the energy storage system are tested under the target test environment. This comprehensive testing of the energy storage system's communication functions across four dimensions—data reading state, communication connection state, command transmission state, and protocol adaptation state—ensures that the communication state meets the collaborative operation requirements of the energy storage system.

[0182] Please see Figure 10 In some implementations, the operating performance state includes the charge / discharge state. Step 03 (testing the target test object of the energy storage system under the target test environment) includes:

[0183] 032: When the target test object is in a charging / discharging state, the charging / discharging process is initiated by issuing a command through the power conversion subsystem;

[0184] 033: Monitor and record the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage batteries in the DC compartment;

[0185] 034: Determine abnormal charging and discharging conditions based on the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery.

[0186] In some implementations, the test module is also used to initiate the charging and discharging process by issuing commands through the power conversion subsystem when the target test object is in a charging and discharging state. It also monitors and records the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery in the DC compartment. Furthermore, it determines any abnormalities in the charging and discharging state based on the current and voltage of the power conversion subsystem and the temperature and state of charge of the energy storage battery.

[0187] In some implementations, the processor is also used to initiate the charging / discharging process by issuing commands through the power conversion subsystem when the target test object is in a charging / discharging state. It also monitors and records the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery in the DC compartment. Furthermore, it determines any abnormalities in the charging / discharging state based on the current and voltage of the power conversion subsystem and the temperature and state of charge of the energy storage battery.

[0188] Specifically, the charging and discharging process refers to the energy interaction process of an energy storage system. The charging process is the process of converting external electrical energy into chemical energy and storing it in the energy storage battery, while the discharging process is the process of converting the battery's chemical energy into electrical energy for output.

[0189] The current and voltage of the power conversion subsystem can be understood as the electrical parameters of the subsystem during charging and discharging. Current reflects the rate of energy transfer, while voltage reflects the intensity of energy transfer; both together determine the power conversion efficiency and safety.

[0190] An energy storage battery is a component within a DC compartment used to store electrical energy; it is the energy carrier during the charging and discharging process. The performance of the energy storage battery directly affects the charging and discharging efficiency of the energy storage system.

[0191] Temperature refers to the heat generated by an energy storage battery during operation; it is a physical parameter reflecting the battery's working state. Excessively high temperatures can accelerate battery degradation and even trigger thermal runaway.

[0192] State of charge (SOC) refers to the proportion of the remaining electrical energy of an energy storage battery to its rated capacity. It directly reflects the remaining battery capacity and serves as a basis for judging whether the battery is fully charged or over-discharged.

[0193] Abnormal conditions refer to states that deviate from the normal operating range during charging and discharging, including excessive current fluctuations, unstable voltage, excessive battery temperature, and abnormal rates of increase / decrease in state of charge, which may affect the safety or performance of the energy storage system.

[0194] Based on the established stable communication link in the target test environment, the power conversion subsystem issues commands to initiate the charging and discharging process. After the command is issued, the power conversion subsystem establishes real-time linkage with the DC compartment through a preset communication protocol, initiating the energy conversion logic: during charging, it converts the stable high voltage output from the transformer into a DC voltage suitable for the energy storage battery. During discharging, it converts the DC energy from the energy storage battery into AC energy.

[0195] Subsequently, the monitoring module built into the power conversion subsystem collects real-time current and voltage data during charging or discharging, recording the real-time values ​​and trends of the data. Temperature data and the state of charge of each energy storage battery are also collected via temperature sensors in the DC battery management subsystem.

[0196] Finally, based on the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery, a comprehensive analysis logic is used to determine whether the charging and discharging state is normal.

[0197] Thus, when the target test object is in a charging / discharging state, the charging / discharging process is initiated by issuing commands through the power conversion subsystem. Next, the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery in the DC compartment, are monitored and recorded. Finally, based on the current and voltage of the power conversion subsystem, and the temperature and state of charge of the energy storage battery, any abnormal charging / discharging conditions are identified. In this way, by simulating real charging / discharging conditions under the target test environment, the test data for the charging / discharging state can accurately reflect the charging / discharging performance of the energy storage system.

[0198] Please see Figure 11 In some implementations, step 034 (determining abnormal charging / discharging conditions based on the current and voltage of the power conversion subsystem, and the temperature and state of charge of the energy storage battery) includes:

[0199] 0341: Determine the current fluctuation amplitude based on the current of the power conversion subsystem;

[0200] 0342: Determine the voltage fluctuation amplitude based on the voltage of the power conversion subsystem;

[0201] 0343: Determine the fluctuation range of the state of charge based on the state of charge of the energy storage battery;

[0202] 0344: If at least one of the following conditions exists, the charging / discharging state is determined to be abnormal: the current fluctuation amplitude is greater than or equal to the preset current fluctuation threshold, the voltage fluctuation amplitude is greater than or equal to the preset voltage fluctuation threshold, the energy storage battery temperature is greater than or equal to the preset temperature threshold, and the state of charge fluctuation amplitude is greater than or equal to the preset state of charge fluctuation threshold.

[0203] In some implementations, the test module is further configured to determine the current fluctuation amplitude based on the current of the power conversion subsystem, and the voltage fluctuation amplitude based on the voltage of the power conversion subsystem. The test module is also configured to determine the state of charge (SOC) fluctuation amplitude based on the SOC of the energy storage battery. If at least one of the following conditions is met: the current fluctuation amplitude is greater than or equal to a preset current fluctuation threshold, the voltage fluctuation amplitude is greater than or equal to a preset voltage fluctuation threshold, the temperature of the energy storage battery is greater than or equal to a preset temperature threshold, and the SOC fluctuation amplitude is greater than or equal to a preset SOC fluctuation threshold, an abnormality in the charge / discharge state is determined.

[0204] In some implementations, the processor is further configured to determine the current fluctuation amplitude based on the current of the power conversion subsystem, and the voltage fluctuation amplitude based on the voltage of the power conversion subsystem. The processor is also configured to determine the state of charge (SOC) fluctuation amplitude based on the SOC of the energy storage battery, and to determine an anomaly in the charge / discharge state if at least one of the following conditions is met: the current fluctuation amplitude is greater than or equal to a preset current fluctuation threshold, the voltage fluctuation amplitude is greater than or equal to a preset voltage fluctuation threshold, the temperature of the energy storage battery is greater than or equal to a preset temperature threshold, and the SOC fluctuation amplitude is greater than or equal to a preset SOC fluctuation threshold.

[0205] Specifically, current fluctuation amplitude refers to the range of current change in the power conversion subsystem per unit time during the charging and discharging process. It is obtained by calculating the difference between the maximum and minimum current values ​​during the test period, which can reflect the stability of current transmission. Excessive current fluctuation amplitude indicates that there is an impact on power transmission.

[0206] Voltage fluctuation amplitude refers to the range of voltage change of the power conversion subsystem per unit time. It is calculated by the difference between the maximum and minimum voltage values ​​during the test period to reflect the stability of voltage output / input. Excessive voltage fluctuation may affect the normal operation of the equipment or battery life.

[0207] State of charge (SOC) fluctuation refers to the increase in SOC of an energy storage battery per unit time during charging (or decrease during discharging). It is calculated by the ratio of the SOC difference at different time points to the time interval, which directly reflects whether the charging efficiency or discharging rate meets the design expectations.

[0208] The preset current fluctuation threshold refers to the upper limit of current fluctuation set in advance according to the design standards, equipment tolerance and industry specifications of the energy storage system. It is a quantitative benchmark for judging whether the current is abnormal. Exceeding this value indicates that the current fluctuation exceeds the safe range.

[0209] The preset voltage fluctuation threshold refers to the pre-set upper limit standard for voltage fluctuation, similar to the current fluctuation threshold, used to determine whether voltage fluctuation is within the allowable range.

[0210] The preset temperature threshold refers to the upper limit of the safe operating temperature set for energy storage batteries. It is determined based on factors such as battery material and heat dissipation capacity. Exceeding the preset temperature threshold may lead to accelerated battery degradation or thermal runaway risk.

[0211] The preset state of charge fluctuation threshold refers to a reasonable range of the rate of increase or decrease of the state of charge, which is predetermined based on the design charging and discharging efficiency of the energy storage system. If the rate exceeds the preset state of charge fluctuation threshold, it indicates that the charging and discharging efficiency is abnormal.

[0212] The collected raw data, including current, voltage, temperature, and state of charge, are processed according to a preset algorithm to obtain calculation results, including current fluctuation amplitude, voltage fluctuation amplitude, and state of charge fluctuation amplitude. The calculation results are then compared with corresponding thresholds one by one to generate comparison results. If any item fails to meet the normal standard, an abnormal charging / discharging status is output, and a corresponding prompt is triggered.

[0213] Thus, the current fluctuation amplitude is determined based on the current of the power conversion subsystem. Next, the voltage fluctuation amplitude is determined based on the voltage of the power conversion subsystem. Then, the state of charge (SOC) fluctuation amplitude is determined based on the SOC of the energy storage battery. Finally, if at least one of the following conditions is met—current fluctuation amplitude greater than or equal to a preset current fluctuation threshold, voltage fluctuation amplitude greater than or equal to a preset voltage fluctuation threshold, energy storage battery temperature greater than or equal to a preset temperature threshold, or SOC fluctuation amplitude greater than or equal to a preset SOC fluctuation threshold—an anomaly in the charging / discharging state is determined. In this way, by converting raw data such as current into quantifiable data and performing multi-dimensional judgments, misjudgments caused by single parameters can be avoided, and the risk points in the charging / discharging process of the energy storage system can be comprehensively covered, reducing the number of missed anomaly detections.

[0214] Please see Figure 12 In some implementations, the method further includes:

[0215] 035: If there is an abnormality in the charging / discharging state, terminate the charging / discharging process and generate abnormal information.

[0216] In some implementations, the test module is also used to terminate the charging and discharging process and generate abnormal information if there is an abnormality in the charging and discharging state.

[0217] In some implementations, the processor is also configured to terminate the charging / discharging process and generate abnormal information in the event of an anomaly in the charging / discharging state.

[0218] Specifically, an abnormal charging / discharging state refers to the situation where, through the aforementioned judgment logic, one or more of the following occurs during the charging / discharging process: excessive current fluctuation, excessive voltage fluctuation, excessive battery temperature, or excessive state of charge fluctuation. This indicates that the energy storage system has deviated from the safe and normal operating range.

[0219] Terminating the charging / discharging process refers to quickly cutting off the power transmission of the charging / discharging circuit through control commands after an anomaly is detected, so that the energy storage system switches from the charging / discharging operation state to the shutdown standby state. It is an emergency measure to prevent the anomaly from escalating.

[0220] Abnormal information refers to a standardized set of information that records key data related to the occurrence of an anomaly. It usually includes the time of the anomaly, the type of anomaly such as abnormal current fluctuation or excessive temperature, the specific parameter values ​​that triggered the anomaly such as current, voltage and temperature data at the time of the anomaly, and the basis for anomaly judgment, so as to provide a complete basis for subsequent troubleshooting.

[0221] In this way, if an abnormality occurs during charging or discharging, the charging or discharging process is terminated, and an abnormality message is generated. This allows energy transfer to be cut off at the initial stage of an abnormality, preventing consequences such as overheating of the energy storage battery and insulation breakdown of the equipment, thus ensuring the safety of testing personnel and equipment.

[0222] Please see Figure 13 In some implementations, the operating performance status includes the power regulation status of the energy storage system. Step 03 (testing the target test object of the energy storage system under the target test environment) includes:

[0223] 036: When the target test object is in a power regulation state, modify the electrical parameter thresholds of the battery management subsystem in the DC compartment;

[0224] 037: Monitor and record the output power of the energy storage system;

[0225] 038: If the output power meets the preset load requirements, the power regulation status is confirmed to be normal.

[0226] In some implementations, the test module is also used to determine that the power regulation status is normal when the output power meets the preset load requirements, and to monitor and record the output power of the energy storage system.

[0227] In some implementations, the processor is also configured to determine that the power regulation status is normal when the output power meets the preset load requirements, and to monitor and record the output power of the energy storage system.

[0228] Specifically, power regulation status refers to the operating state of an energy storage system, which adjusts its output power and stabilizes its output accuracy based on changes in external demand or internal parameters. Power regulation status measures the dynamic adaptability of the energy storage system, which directly affects power supply stability and load adaptability.

[0229] The battery management subsystem refers to the control unit in the DC compartment responsible for monitoring the status and managing the operation of the energy storage battery. It can collect data such as battery voltage, current, and temperature, and implement overcharge, over-discharge, and over-temperature protection through preset electrical parameter thresholds, while providing decision-making basis for power regulation.

[0230] Electrical parameter thresholds refer to the preset critical values ​​of electrical parameters in the battery management subsystem, including upper / lower voltage limits, upper / lower current limits, and state of charge thresholds, which directly determine the response boundaries of power regulation.

[0231] Output power refers to the electrical power output by an energy storage system to an external load or power grid through a power conversion subsystem. It is a direct indicator of power regulation performance, and the stability, response speed, and regulation accuracy of output power can all reflect the power regulation performance of an energy storage system.

[0232] Preset load requirements refer to the set of output power requirements pre-defined based on the energy storage system's design purpose, target testing scenario, and industry standards. These requirements include indicators such as power range, power stability threshold, and response time requirements, and serve as the core benchmark for determining the effectiveness of regulation. Specifically, the power range refers to the interval between the minimum and maximum power required by the load. The power stability threshold refers to the allowable power fluctuation range. The response time requirement refers to the longest permissible time from triggering regulation to reaching the target power.

[0233] Normal power regulation status means that after the energy storage system modifies the threshold values ​​of the electrical parameters of the battery management subsystem, the output power not only falls within the preset power range of the load demand, but also the power fluctuation amplitude, response time and other indicators meet the preset standards during the regulation process. This indicates that the system has the ability to stably regulate to meet the load demand under dynamic operating conditions.

[0234] After the electrical parameter thresholds are modified, the battery management subsystem will feed back the new threshold parameters to the energy management subsystem in real time via the configured communication protocol. The energy management subsystem generates a power adjustment command based on the new thresholds and sends it to the power conversion subsystem. The power conversion subsystem responds to the command by adjusting the output power and simultaneously feeds back the real-time output power data to the monitoring device. The monitoring device records the data and transmits it to the control terminal. The control terminal compares the actual power change with the expected standard and ultimately determines whether the power adjustment status is abnormal.

[0235] The collected real-time output power data is processed according to a preset algorithm, extracting features such as response speed, power magnitude, and power range. Then, these features are compared one by one with the corresponding indicators of the preset load requirements, generating comparison results. If all indicators meet the preset load requirements, the output power regulation status is normal; otherwise, it is marked as abnormal.

[0236] Thus, when the target test object is in a power regulation state, the electrical parameter thresholds of the battery management subsystem in the DC compartment are modified. Next, the output power of the energy storage system is monitored and recorded. Then, if the output power meets the preset load requirements, the power regulation state is determined to be normal. In this way, by monitoring the output power after the electrical parameter thresholds are modified, the speed and accuracy of power regulation can be quantitatively evaluated, ensuring that the energy storage system can quickly adapt to load changes or battery state fluctuations during actual operation.

[0237] Please see Figure 14 In some implementations, the method further includes:

[0238] 0223: Connect the protection device between the preset step-up transformer and the first auxiliary power supply to ensure that the operating voltage of the energy storage system is within the preset electrical parameter safety range.

[0239] In some implementations, the configuration module is also used to connect a protection device between the preset step-up transformer and the first auxiliary power supply to ensure that the operating voltage of the energy storage system is within the preset electrical parameter safety range.

[0240] In some implementations, the processor is also used to connect a protection device between the preset step-up transformer and the first auxiliary power supply to ensure that the operating voltage of the energy storage system is within the preset electrical parameter safety range.

[0241] Specifically, a protection device refers to equipment used to monitor the operating status of a circuit and prevent electrical risks. It can detect parameters such as voltage and current in real time and automatically trigger protective actions, such as cutting off the circuit, when an abnormality occurs, thus preventing the fault from escalating. In the embodiment of this application, the protection device is a circuit breaker.

[0242] Circuit breakers have functions such as overload protection, short circuit protection, and undervoltage protection. When abnormal voltage or excessive current is detected in the circuit, the circuit breaker can quickly disconnect the circuit, cut off the power transmission, and ensure circuit safety.

[0243] The preset electrical parameter safety range refers to the safe range of the first auxiliary power supply voltage that is pre-defined based on the withstand voltage level of the energy storage system, industry electrical safety standards, and test scenario requirements. Exceeding this preset electrical parameter safety range is considered an abnormal voltage.

[0244] The section between the preset step-up transformer and the first auxiliary power supply refers to the circuit connection section where the first auxiliary power supply provides power to the input terminal of the preset step-up transformer. Connecting the protection device to this location can intercept risks before the voltage enters the preset step-up transformer, preventing abnormal voltage from entering the subsequent test circuit.

[0245] The protection device has a built-in voltage monitoring module that can collect data such as the voltage of the first auxiliary power input in real time. The energy storage system then compares the collected voltage data with the upper and lower limits of a preset safety range in real time. When the voltage exceeds the threshold, the actuator inside the protection device quickly activates, triggering the circuit breaker to trip and disconnect the circuit. Simultaneously, a fault signal is sent to the monitoring module of the energy storage system.

[0246] In some implementations, the upper and lower thresholds of the preset safety range can be as shown in Table 1 below:

[0247] Table 1

[0248]

[0249] Thus, a protection device is connected between the pre-set step-up transformer and the first auxiliary power supply to ensure that the operating voltage of the energy storage system remains within the preset safe range of electrical parameters. This allows for the timely interruption of dangerous currents, effectively preventing accidents such as electric shock and fire, and ensuring the personal safety of testing personnel.

[0250] This application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, it implements the steps of the energy storage system testing method described above.

[0251] It is understood that a computer program includes computer program code. Computer program code can be in the form of source code, object code, executable files, or some intermediate form. Computer-readable storage media can include: any entity or device capable of carrying computer program code, recording media, USB flash drives, external hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), and software distribution media, etc.

[0252] This application also provides a computer program product, including a computer program / instructions that, when executed by a processor, implement the above-described method.

[0253] In this specification, the terms "specifically," "furthermore," "particularly," "understandably," etc., refer to specific features, structures, materials, or characteristics described in connection with embodiments or examples that are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0254] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of executable request code comprising one or more steps for implementing a particular logical function or process, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order according to the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.

[0255] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A testing method for an energy storage system, characterized in that, The method includes: Configure the basic test environment for the energy storage system, wherein the basic test environment includes a test voltage, and the voltage value of the test voltage is determined based on the power voltage specification of the test site where the energy storage system is located; Once the basic test environment configuration is complete, the basic test environment is adjusted according to the selected target test object to determine the target test environment that matches the target test object. The target test object of the energy storage system is tested under the target test environment.

2. The method according to claim 1, characterized in that, The energy storage system includes a DC module, a power conversion subsystem, and an energy management subsystem. The test voltage includes a first auxiliary power supply, a second auxiliary power supply, and a third auxiliary power supply. The basic test environment for configuring the energy storage system includes: The power conversion subsystem is connected to the first auxiliary power supply, which is determined based on the rated voltage range of the power conversion subsystem. The DC compartment is connected to the second auxiliary power supply, which is determined based on the rated voltage range of the DC compartment. The energy management subsystem is connected to the third auxiliary power supply, which is determined based on the rated voltage range of the energy management subsystem.

3. The method according to claim 2, characterized in that, The basic test environment also includes virtual local area network (VLAN) information, which includes a first VLAN, a second VLAN, and a third VLAN. The basic test environment for configuring the energy storage system includes: The DC module, the power conversion subsystem, and the energy management subsystem are connected to different ports of the switch using pre-defined network cables. Based on the switch, the DC compartment is assigned to the first virtual local area network; Based on the switch, the power conversion subsystem is assigned to the second virtual local area network; Based on the switch, the energy management subsystem is divided into the third virtual local area network (VLAN), and the first VLAN, the second VLAN, and the third VLAN are different.

4. The method according to claim 3, characterized in that, The basic test environment also includes network information, which includes network addresses and communication protocols. The network addresses include a first network address, a second network address, and a third network address. The communication protocols include a first communication protocol, a second communication protocol, and a third communication protocol. The basic test environment for configuring the energy storage system includes: Configure the first network address of the energy management subsystem, the second network address of the DC module, and the third network address of the power conversion subsystem; Configure the first communication protocol between the energy management subsystem and the DC module, the second communication protocol between the energy management subsystem and the power conversion subsystem, and the third communication protocol between the power conversion subsystem and the DC module.

5. The method according to any one of claims 2-4, characterized in that, The target test object includes the communication status and operational performance status of the energy storage system. The step of adjusting the basic test environment according to the selected target test object, after the basic test environment configuration is completed, to determine the target test environment matching the target test object, includes: When the target test object is in the communication state, the basic test environment is determined as the target test environment; When the target test object is the operating performance state, the basic test environment is adjusted to determine the target test environment that matches the operating performance state.

6. The method according to claim 5, characterized in that, When the target test object is in the aforementioned operating performance state, adjusting the basic test environment to determine a target test environment that matches the operating performance state includes: A preset step-up transformer is connected between the first auxiliary power supply and the power conversion subsystem, wherein the preset step-up transformer is used to boost the voltage value of the first auxiliary power supply to the rated voltage value of the power conversion subsystem; An electrical connection is established between the DC compartment and the power conversion subsystem based on a pre-defined cable specification.

7. The method according to claim 5, characterized in that, The communication status includes data reading status, communication connection status, command transmission status, and protocol adaptation status. The testing of the target test object of the energy storage system under the target test environment includes: When the target test object is in the communication state, the energy storage system is tested for its data reading state, communication connection state, command transmission state, and protocol adaptation state under the target test environment.

8. The method according to claim 6, characterized in that, The operational performance status includes the charge and discharge status of the energy storage system. The testing of the target test object of the energy storage system under the target test environment includes: When the target test object is in the charging / discharging state, the charging / discharging process is initiated by issuing a command through the power conversion subsystem; Monitor and record the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery in the DC compartment; Based on the current and voltage of the power conversion subsystem, as well as the temperature and state of charge of the energy storage battery, abnormal conditions of the charging and discharging state are determined.

9. The method according to claim 8, characterized in that, The step of determining abnormal charging and discharging states based on the current and voltage of the power conversion subsystem, and the temperature and state of charge of the energy storage battery, includes: The current fluctuation amplitude is determined based on the current of the power conversion subsystem. The voltage fluctuation amplitude is determined based on the voltage of the power conversion subsystem. The state of charge fluctuation amplitude is determined based on the state of charge of the energy storage battery. If at least one of the following conditions is met: the current fluctuation amplitude is greater than or equal to a preset current fluctuation threshold, the voltage fluctuation amplitude is greater than or equal to a preset voltage fluctuation threshold, the temperature of the energy storage battery is greater than or equal to a preset temperature threshold, and the state of charge fluctuation amplitude is greater than or equal to a preset state of charge fluctuation threshold, then the charging and discharging state is determined to be abnormal.

10. The method according to claim 9, characterized in that, The method further includes: If an abnormality occurs in the charging / discharging state, the charging / discharging process is terminated, and an abnormality message is generated.

11. The method according to claim 6, characterized in that, The operating performance status includes the power regulation status of the energy storage system, and the testing of the target test object of the energy storage system under the target test environment includes: When the target test object is in the power regulation state, the electrical parameter thresholds of the battery management subsystem in the DC compartment are modified. Monitor and record the output power of the energy storage system; If the output power meets the preset load requirements, the power regulation state is determined to be normal.

12. The method according to claim 6, characterized in that, The method further includes: A protection device is connected between the preset step-up transformer and the first auxiliary power supply to ensure that the operating voltage of the energy storage system is within the preset electrical parameter safety range.

13. An electronic device, characterized in that, It includes a processor and a memory, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of any one of claims 1-12.

14. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program that, when executed by a processor, implements the steps of the method according to any one of claims 1-12.

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