A multifunctional portable electrochemical energy storage system testing device

Abstract

This invention relates to a multifunctional portable electrochemical energy storage system testing device, comprising a power source module for converting external power into working power and supplying power to other modules; a communication interface module for communicating with the energy storage device under test; an input / output module for providing input / output interfaces to the device under test; a simulation module for simulating the operating environment of the device under test by parsing the model interface information of the corresponding device; and an automatic testing module for automatically issuing test commands, recording test data, and generating test reports based on edited test cases. It can perform simulation tests on various devices such as power management systems (PMS), energy storage power station energy management systems (EMS), power storage converters (PCS), and battery management systems (BMS). Automatic modeling is achieved by parsing SCD or ICD files or point tables, and multiple PCS and BMS devices can be simulated simultaneously, improving the efficiency of on-site testing.

Description

Technical Field

[0001] This invention relates to a multifunctional portable electrochemical energy storage system testing device, belonging to the field of energy storage technology. Background Technology

[0002] Safety has gradually become a primary concern in the construction and large-scale application of lithium-ion battery energy storage power stations. Related accident investigation reports indicate that incomplete or untimely information sharing among the Battery Management System (BMS), Power Conversion System (PCS), Energy Management System (EMS), and Coordination Controller; improper protection configuration and coordination between the PCS and batteries; battery anomalies after PCS repairs; and conflicts between measuring devices and the management system are among the key reasons why electrochemical energy storage system failures cannot be effectively and promptly controlled, escalating into accidents. Therefore, strengthening the testing and verification of key equipment in electrochemical energy storage systems, such as power conversion systems and coordination controllers, is of great practical significance.

[0003] For example, CN114137346B describes a test device for a battery management system of an energy storage power station based on a digital simulation platform. This device can test the battery management system of the energy storage power station under test without the need for a real battery. It can perform comprehensive detection and verification of the operational logic function of the battery management system of the energy storage power station under test by issuing various control quantities. It can be used not only in the automotive field but also in various energy storage power stations and other energy storage equipment application fields. However, this digital simulation platform simulates the battery system and the operating environment of the BMS, but it cannot achieve information interaction with various devices under test.

[0004] For example, CN114755518A describes a test method and test platform for the control logic of an energy storage system. This solution can accurately locate the problematic hardware in the energy storage system and improve the reliability of the energy storage system. However, the simulation module of this solution communicates with the device under test using the Modbu protocol and is manually configured and modeled using MATLAB, which cannot achieve automatic modeling and communication for different devices under test. Summary of the Invention

[0005] The purpose of this invention is to provide a multifunctional portable electrochemical energy storage system testing device to solve the problems mentioned in the background art.

[0006] The technical solution of the present invention is as follows:

[0007] A multifunctional portable electrochemical energy storage system testing device, comprising:

[0008] The power source module is used to convert external power into operating power and power other modules;

[0009] A communication interface module is used to communicate with the energy storage device under test.

[0010] The input / output module is used to provide input / output interfaces for the device under test;

[0011] The simulation module parses the model interface information of the corresponding device to realize the simulation function of the operating environment of the device under test;

[0012] The automated testing module automatically issues test commands based on the edited test cases, records test data, and generates test reports;

[0013] The human-computer interface module is used for human-computer interaction.

[0014] Preferably, the power source module is powered by AC220V or AC110V mains power, providing multiple AC voltage outputs of 0-280V, multiple AC current outputs of 0-30A, and at least one DC voltage output of 0-1500V.

[0015] Preferably, the communication interface module includes multiple RJ45 network ports, multiple optical network ports, multiple CAN ports, and multiple RS485 serial ports.

[0016] Preferably, the input / output module includes multiple DO contacts and multiple DI input contacts.

[0017] Preferably, the simulation module includes:

[0018] The PCS device is simulated by parsing its icd file and loading its information.

[0019] The BMS device is simulated by parsing the BMS communication point table, which simulates the BMS operating status, including stable operation simulation and fault simulation.

[0020] Simulate an energy storage EMS, import the model file, and implement IEC61850 / IEC104 client functions;

[0021] The simulation supports GOOSE control functions, imports scd files, automatically parses the gocb control block information, and sends it to the PCS device.

[0022] Preferably, the simulated energy storage EMS includes 61850 simulation and 104 simulation; the 61850 simulation uses SCD or ICD files, and 61850 simulation parses each data control block and communication parameter in the model file to establish MMS communication; the 104 simulation parses the four remote information, manually configures the communication parameters, and establishes 104 communication.

[0023] Preferably, the simulated PCS device includes:

[0024] Power output: Upon receiving a power command, it responds to the demand by outputting a corresponding analog power quantity.

[0025] Operational status, transmitting simulated real-time measurements, including remote signaling and telemetry;

[0026] Power regulation performance, simulating the regulation performance of real equipment, including flip time and response time;

[0027] Fault states, simulating various faults in real equipment.

[0028] Preferably, the simulated BMS device includes:

[0029] Operational status, transmitting simulated real-time measurements, including remote signaling and telemetry;

[0030] Fault states, simulating various faults in real equipment.

[0031] Preferably, it also includes a communication service bus module that is connected to the power source module, communication interface module, input / output module, simulation module, automatic test module, and human-machine interface module simultaneously.

[0032] Preferably, the communication service bus module incorporates IEC61850, IEC104, MODBUS, and CAN2.0 communication protocols.

[0033] The present invention has the following beneficial effects:

[0034] It can perform simulation tests on various devices such as power management system (PMS), energy storage power station energy management system (EMS), energy storage converter (PCS), and battery management system (BMS); and it integrates multiple communication protocols, allowing communication with the device under test using the protocols supported by the device under test.

[0035] Automatic modeling is achieved by parsing SCD or ICD files or point tables, and multiple PCS, BMS and other equipment can be simulated simultaneously, improving the efficiency of on-site testing in projects.

[0036] By connecting to the device under test through different communication interfaces, information is collected, measured, and controlled for the BMS, energy storage converter, and coordinating controller. The test results can be automatically saved, achieving standardized, centralized, and closed-loop testing. The test is scalable and easy to operate for different functions. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the system structure of the present invention;

[0038] Figure 2 This is the test architecture for the coordinating controller of the present invention.

[0039] The reference numerals in the figure are as follows:

[0040] 101. Power source module; 102. Communication interface module; 103. Input / output module; 104. Simulation module; 105. Automatic test module; 106. Human-machine interface module; 107. Communication service bus module. Detailed Implementation

[0041] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0042] like Figure 1 As shown, it includes a power source module 101, a communication interface module 102, an input / output module 103, a simulation module 104, a human-machine interface module 106, an automatic test module 105, and a communication service bus module 107.

[0043] The power source module 101 is powered by AC220V or AC110V mains power and can provide 6 channels of AC voltage output from 0 to 280V, 6 channels of AC current output from 0 to 30A, and 1 channel of DC voltage output from 0 to 1500V. It can provide a stable AC / DC voltage source and AC current source to simulate the operating environment of equipment such as co-control and PCS.

[0044] The communication interface module 102 provides communication interfaces such as network port, serial port, and CAN port to realize communication with systems such as co-control, PCS, BMS, and energy storage EMS. It provides 6 RJ45 network ports, 2 optical network ports, 2 CAN ports, and 2 RS485 serial ports. The device integrates the communication interfaces and functions of EMS, PCS, BMS, and co-control, and can communicate with the energy storage device under test.

[0045] The input / output module 103 can connect to hard contact signals to acquire hard contact output signals from devices such as the control unit, PCS, and BMS; it also provides hard contact outputs and hard contact inputs required for testing control units, PCS, and other devices. It provides 4 DO contacts and 8 DI input contacts, supporting DC 220V high-voltage input.

[0046] The simulation module 104 includes a PCS simulation module, a BMS simulation module, and an energy storage EMS simulation module. By parsing the model interface information of the corresponding devices, it realizes the simulation function of the operating environment of the device under test.

[0047] 1) Simulate the PCS device. The test device loads the PCS device information by parsing the PCS device's icd file.

[0048] It can simulate the stable operating state of a PCS, and its electrical characteristics mainly include the following:

[0049] Power output: When a power command is received, it can respond correctly to the demand and output the corresponding analog power quantity.

[0050] Operating status: It can correctly send simulated real-time measurements, including remote signaling and telemetry.

[0051] Power regulation performance: It can simulate the regulation performance of real equipment, such as flip time and response time.

[0052] It can simulate the fault states of PCS, including the following aspects:

[0053] It can set various faults for PCS, such as overfrequency, overvoltage, overcurrent, overload, overtemperature, and insulation faults.

[0054] It can simulate various fault responses and synchronously update the corresponding system operating status, including power output and measurement transmission.

[0055] It can set various alarms for PCS, such as equipment underfrequency, overfrequency, undervoltage, overvoltage, overload, and high temperature alarms.

[0056] It can simulate various alarm responses and synchronously update the corresponding system operating status, including power output and measurement transmission.

[0057] 2) Simulate the BMS device by parsing the BMS communication point table to simulate the BMS operating status, including stable operation simulation and fault simulation.

[0058] BMS stable operation simulation mainly includes:

[0059] Operating status: It can correctly send simulated real-time measurements, including remote signaling and telemetry.

[0060] BMS fault state simulation mainly includes:

[0061] It can set various faults for BMS and single-cell clusters, such as overvoltage, overcurrent, overtemperature, and insulation faults. It also simulates various fault responses and synchronously updates the corresponding system operating status, including power output and measurement transmission.

[0062] It can set various alarms for BMS and single-cell clusters, such as overvoltage, overcurrent, and high temperature alarms. It also simulates various alarm responses and synchronously updates the corresponding system operating status, including power output and measurement transmission.

[0063] It can set no-charging and no-discharging signs, simulate responses, and synchronously update the corresponding system operating status, including power output and measurement transmission.

[0064] It can configure internal communication faults in the BMS and simulate responses, synchronously updating the corresponding system operating status, including power output and measurement transmission.

[0065] 3) Simulate the energy storage EMS. Import the model file into the test device. For the 61850 simulation, use an SCD or ICD file, and for the 104 simulation, use a TXT point table file. The 61850 simulation analyzes the data control blocks and communication parameters in the model file and establishes MMS communication. The 104 simulation analyzes the four remote information, manually configures the communication parameters, establishes 104 communication, and realizes the IEC61850 / IEC104 client function.

[0066] 4) Simulates GOOSE control function, imports SCD files, automatically parses GOCB control block information such as MAC address, GOCB Ref and other communication parameters, and can automatically associate signal points. Active power setpoints and reactive power setpoints can be flexibly set and sent to PCS devices.

[0067] The automatic testing module 105 can automatically issue test instructions based on the edited test cases and output test reports based on the collected data.

[0068] The human-machine interface module 106 enables the setting of parameters for each module and the configuration of test cases. It allows for the editing, modification, saving, and importing of test cases, and the setting of parameters for the simulation module.

[0069] The communication service bus module 107 provides support for data interaction between various modules of the test device; completes the data interaction function of each sub-module; integrates multiple communication protocols such as IEC61850 (MMS / GOOSE), IEC104, MODBUS, and CAN2.0 to realize communication services between the simulation system and the device under test.

[0070] Example 1

[0071] like Figure 2 As shown, the testing apparatus of the present invention is used for sampling testing and power control strategy testing of energy storage coordination controller devices, including the following steps (the work of completing network wiring, cable wiring, etc. will not be described in detail):

[0072] S1. Import the SCD configuration file into the test device;

[0073] S2. Configure the AC current, voltage channels and increment sequence of the power source module 101 through the human-machine interface module 106 to provide AC sampling input for the co-control.

[0074] S3. Configure the energy storage simulation EMS sampling channel of the simulation module 104 to collect AC current and voltage samples sent by the co-control system.

[0075] S4. Configure sampling error limit values;

[0076] S5. Configure the power control strategy activation / deactivation sequence and power setting value;

[0077] S6. Save the test cases;

[0078] S6. Enable automatic testing.

[0079] After the test sequence is completed, the automatic test module 105 will output a sampling test report based on the set sampling error limit and the sampled values; and output a power control strategy test report based on the set control strategy sequence, power setpoint, and the sampled simulated PCS output power value.

[0080] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A multifunctional portable electrochemical energy storage system testing device, characterized in that: include: The power source module (101) is used to convert external power into working power and to power other modules; The communication interface module (102) is used to communicate with the energy storage device under test; The input / output module (103) is used to provide input / output interfaces for the device under test; The simulation module (104) realizes the simulation function of the operating environment of the device under test by parsing the model interface information of the corresponding device; The automatic testing module (105) automatically issues test instructions based on the edited test cases, records test data, and generates test reports; Human-computer interface module (106), used for human-computer interaction; The communication interface module (102) includes multiple RJ45 network ports, multiple optical network ports, multiple CAN ports, and multiple RS485 serial ports; The input / output module (103) includes multiple DO contacts and multiple DI input contacts; The simulation module (104) includes: The PCS device is simulated by parsing its icd file and loading its information. The BMS device is simulated by parsing the BMS communication point table, which simulates the BMS operating status, including stable operation simulation and fault simulation. Simulate an energy storage EMS, import the model file, and implement IEC61850 / IEC104 client functions; Simulate the collaborative control function of GOOSE, import the scd file, automatically parse the gocb control block information, and send it to the PCS device; The simulated energy storage EMS includes 61850 simulation and 104 simulation; the 61850 simulation uses scd or icd files, and 61850 simulation parses each data control block and communication parameter in the model file to establish MMS communication; the 104 simulation parses the four remote information, manually configures the communication parameters, and establishes 104 communication. The simulation PCS device includes: Power output: Upon receiving a power command, the corresponding analog power quantity is output in response to the demand. Operational status, transmitting simulated real-time measurements, including remote signaling and telemetry; Power regulation performance, simulating the regulation performance of real equipment, including flip time and response time; Fault states, simulating various faults in real equipment; The simulated BMS device includes: Operational status, transmitting simulated real-time measurements, including remote signaling and telemetry; Fault states, simulating various faults in real equipment.

2. The multifunctional portable electrochemical energy storage system testing device as described in claim 1, characterized in that: The power source module (101) is powered by AC220V or AC110V mains power, providing multiple AC voltage outputs of 0~280V, multiple AC current outputs of 0~30A, and at least one DC voltage output of 0~1500V.

3. The multifunctional portable electrochemical energy storage system testing device as described in claim 1, characterized in that: It also includes a communication service bus module (107) that is connected to the power source module (101), communication interface module (102), input / output module (103), simulation module (104), automatic test module (105), and human-machine interface module (106) at the same time.

4. The multifunctional portable electrochemical energy storage system testing device as described in claim 3, characterized in that: The communication service bus module (107) incorporates IEC61850, IEC104, MODBUS and CAN2.0 communication protocols.

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