Electrochemical energy storage station agvc testing method and system

Abstract

The application relates to an electrochemical energy storage station AGVC test method and system, preset test cases; a simulation master station issues active power and voltage target values to an AGVC system according to the test cases; simulation protection measurement and control equipment generates and uploads grid-connected point data and station protection action information to the AGVC system; a simulation PCS / BMS energy storage unit receives remote control and setting point instructions issued by the AGVC system, makes real-time responses, generates and uploads PCS / BMS operation information to the AGVC system and a test system; the test system judges AGVC system test results and generates a test report according to the instructions issued by the simulation master station, protection measurement and control information and operation information uploaded by the simulation energy storage unit; through standardized test cases, the AGVC system is tested and verified without interfering with the power system, and the problem that frequent tests on the AGVC during energy storage station debugging cause adverse effects on the safe and stable operation of the power system is solved.

Description

Technical Field

[0001] This invention relates to a testing method and system for AGVC (Automatic Guided Vehicle) in electrochemical energy storage stations, belonging to the field of power system technology. Background Technology

[0002] As the installed capacity of new energy power generation such as photovoltaics and wind power continues to increase, the volatility of the power grid is also increasing. Therefore, it is necessary to build more energy storage systems to improve the absorption of renewable energy. Electrochemical energy storage, as one of the various forms of energy storage, has the characteristics of mature technology, short construction period, fast adjustment speed and precise control, and can provide a variety of services such as grid peak shaving, frequency regulation and demand response support.

[0003] In power systems, AGVC (Automatic Generation Control) combines automatic generation control and automatic voltage control to work together to achieve stability and reliability. Through AGVC systems, the power system can monitor and adjust generator output power and voltage in real time to respond to changes in grid load and the dynamic adjustment needs of the power system.

[0004] Automatic generation control (AGC) can monitor load demand and generator output in a power system and automatically adjust the generator output power according to changes in the power system frequency in order to maintain grid frequency stability.

[0005] Automatic voltage control (AVC) monitors voltage changes in the power system and adjusts the voltage by regulating transformer taps or generator excitation control to maintain grid voltage stability.

[0006] However, during the commissioning of energy storage stations, the AGC / AVC function can only be integrated with the dispatch after power is supplied, and it is not advisable to conduct tests frequently. Problems that occur during the commissioning process require multiple modifications and corrections, which has an adverse impact on the safe and stable operation of the power system and also reduces the efficiency of commissioning.

[0007] For example, CN108958216B, "Automatic Testing System and Method for New Energy AGC or AVC Control Systems," reduces testing complexity and improves testing efficiency through closed-loop simulation testing of the system under test. However, AGVC, AGC, and AVC are three different control strategies that cannot be applied interchangeably or combined. Furthermore, this scheme does not consider the impact of protection and control equipment on AGVC during testing. Additionally, the scheme employs manual testing methods, resulting in significant human intervention and making it susceptible to errors caused by human factors. Summary of the Invention

[0008] The purpose of this invention is to provide a method and system for testing AGVC in electrochemical energy storage stations, so as to solve the problems mentioned in the background art.

[0009] The technical solution of the present invention is as follows:

[0010] An AGVC testing method for an electrochemical energy storage station includes the following steps:

[0011] Preset test cases;

[0012] The simulated master station sends active power and voltage target values ​​to the AGVC system based on the test cases;

[0013] The simulation protection and control equipment generates and uploads grid connection point data and station protection action information to the AGVC system;

[0014] The simulated PCS / BMS energy storage unit receives remote control and setting commands from the AGVC system, responds in real time, and generates and sends PCS / BMS operation information to the AGVC system and the test system.

[0015] The testing system determines the test results of the AGVC system and generates a test report based on the instructions issued by the simulated master station, the protection and control information, and the operation information sent by the simulated energy storage unit.

[0016] An AGVC testing system for an electrochemical energy storage station includes:

[0017] Simulate PCS / BMS energy storage units and simulate protection and control equipment; perform modeling of simulated PCS / BMS energy storage units and simulated protection and control equipment.

[0018] The simulated master station module is used to model the simulated master station.

[0019] The AGVC system also connects to the simulated PCS / BMS energy storage unit, simulated protection and control equipment, and simulated master station module for information exchange.

[0020] The test execution module connects and interacts with the simulated PCS / BMS energy storage unit, simulated protection and control equipment, simulated master station module, and AGVC system. Based on the edited test cases, it automatically issues test commands, records test data, and generates test reports.

[0021] Preferably, the simulated PCS / BMS energy storage unit and the simulated protection and control equipment are simulated by parsing the SCD configuration file of the energy storage station.

[0022] Preferably, the simulated master station module is modeled by importing the master station's scheduling and forwarding point table.

[0023] Preferably, it also includes a human-machine interface module connected to the test execution module for configuring test cases.

[0024] Preferably, the simulated PCS / BMS energy storage unit and the simulated protection and control equipment also include GOOSE virtual terminal connection information with the AGVC system, as well as communication configuration information.

[0025] Preferably, the simulated master station records the communication forwarding information between itself and the AGVC system and configures the communication parameters; the simulated master station and the AGVC system adopt the IEC104 communication protocol.

[0026] Preferably, it also includes a report generation module connected to the test execution module, used to generate a test report in a specified format.

[0027] An electronic device includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement an AGVC testing method for an electrochemical energy storage station.

[0028] A computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a test method for an electrochemical energy storage station AGVC.

[0029] The present invention has the following beneficial effects:

[0030] By using standardized test cases, the AGVC system can be tested and verified without interfering with the power system, thus solving the problem that frequent testing during the commissioning of AGVC at energy storage stations can have an adverse impact on the safe and stable operation of the power system.

[0031] It integrates protection and control equipment, PCS and BMS closely related to AGVC, and can verify the quality of AGVC operation with a few tests, resulting in high debugging efficiency. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the method flow of the present invention;

[0033] Figure 2 This is a schematic diagram of the test information flow executed by the present invention;

[0034] Figure 3 This is a schematic diagram of the simulated PCS / BMS energy storage unit module of the present invention. Detailed Implementation

[0035] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0036] The system includes:

[0037] The system includes a human-machine interface module, a simulated PCS / BMS energy storage unit module, a simulated master station module, a simulated protection and control device module, a test execution module, and a report generation module.

[0038] The human-computer interface module allows users to edit, modify, save, retrieve, and import test cases; start tests; and view test reports.

[0039] Simulated PCS / BMS energy storage unit module (see attached manual) Figure 3 A simulated PCS / BMS energy storage unit module includes one PCS and one BMS. Each device includes a modeling module, a communication module, a simulation control module, and a human-machine interface module. The modeling module uses an SCD configuration file to parse the data control blocks and communication parameters in the model file and establish a GOOSE and MMS service communication model. The communication module simulates the communication of the energy storage unit model and interacts with the AGVC system. The simulation control module is responsible for the dynamic response logic calculation of the PCS and BMS and the data interaction within the PCS and BMS. The human-machine interface module sets and displays parameters and point table information.

[0040] The simulated master station module issues power and voltage target values ​​based on the test cases.

[0041] The simulation protection and control device module is similar in structure to the simulation PCS / BMS energy storage unit module, and mainly transmits grid connection point sampling data and protection action information.

[0042] The test execution module, after starting the test, automatically calls the simulated master station, simulated PCS / BMS energy storage unit module, and simulated protection and control device, and generates data and executes corresponding information output according to the test sequence.

[0043] The report generation module generates a test report in a specified format based on the verification data written in the test cases after the test sequence has been executed.

[0044] The method includes the following steps:

[0045] Import the SCD configuration file of the energy storage power station, parse the model information of PCS, BMS, and protection and control equipment, and generate simulated PCS / BMS energy storage unit equipment and simulated protection and control equipment. Import the master station's scheduling and forwarding point table to realize the test system's simulation of the master station's functions.

[0046] The simulation includes PCS / BMS energy storage unit equipment and protection and control equipment, containing GOOSE virtual terminal connection information with the AGVC system, as well as communication configuration information.

[0047] The simulated master station records the communication forwarding information between itself and the AGVC system and configures the communication parameters. The simulated master station and the AGVC system use the IEC104 communication protocol.

[0048] The test execution module of the test system calls the test case and simulates the master station to send the active power and voltage target values ​​to the AGVC system according to the settings of the test case;

[0049] The simulation protection and control equipment generates and uploads grid connection point data and station protection action information to the AGVC system based on the test case settings.

[0050] The AGVC system receives active power, target voltage, grid connection point data, and in-station protection action information and executes corresponding actions.

[0051] The simulated PCS / BMS energy storage unit receives remote control and setting commands from the AGVC system, responds in real time, and generates and sends PCS / BMS operation information to the AGVC system and the test system.

[0052] The test execution module of the test system judges the test results of the AGVC system based on the instructions issued by the simulated master station, the protection and control information, and the operation information sent by the simulated energy storage unit, and automatically generates a test report.

[0053] Example 1:

[0054] like Figure 1 As shown, this invention discloses a method for testing an AGVC system in an electrochemical energy storage power station, comprising the following steps:

[0055] Step S1: Parse the SCD configuration file and perform simulation modeling of the PCS / BMS energy storage unit.

[0056] Step S2: Parse the SCD configuration file and model the simulation protection and control device.

[0057] Step S3: Import the scheduling and forwarding point table and perform simulation master station modeling.

[0058] Step S4: Write test cases, edit test sequences, verification data, and test report formats.

[0059] Step S5: Connect to the AGVC system, execute the test, and complete the initiation, management, and data generation of the test process.

[0060] Step S6: Collect verification data, perform data verification, and generate a test report.

[0061] 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 method for testing AGVC in an electrochemical energy storage station, characterized in that: Includes the following steps: The SCD configuration file of the energy storage station is pre-parsed to construct a simulated PCS / BMS energy storage unit and simulated protection and control equipment; A simulated master station is constructed by importing the master station's scheduling and forwarding point table; Preset test cases; The simulated master station sends active power and voltage target values ​​to the AGVC system based on the test cases; The simulation protection and control equipment generates and uploads network point data and station protection action information to the AGVC system; The simulated PCS / BMS energy storage unit receives remote control and setting commands from the AGVC system, responds in real time, and generates and sends PCS / BMS operation information to the AGVC system and the test system. The testing system judges the test results of the AGVC system and generates a test report based on the instructions issued by the simulated master station, the protection and control information, and the operation information sent by the simulated energy storage unit. The simulated PCS / BMS energy storage unit and simulated protection and control equipment are modeled by parsing the SCD configuration file of the energy storage station. The simulated master station is modeled by importing the master station's scheduling and forwarding point table; The simulated PCS / BMS energy storage unit and simulated protection and control equipment also include GOOSE virtual terminal connection information with the AGVC system, as well as communication configuration information; The simulated master station records the communication forwarding information between itself and the AGVC system and configures the communication parameters; the simulated master station and the AGVC system use the IEC104 communication protocol.

2. An AGVC testing system for an electrochemical energy storage station, characterized in that: include: Simulate PCS / BMS energy storage units and simulate protection and control equipment; perform modeling of simulated PCS / BMS energy storage units and simulated protection and control equipment. The simulated master station module is used to model the simulated master station. The AGVC system also connects to the simulated PCS / BMS energy storage unit, simulated protection and control equipment, and simulated master station module for information exchange. The test execution module connects and interacts with the simulated PCS / BMS energy storage unit, simulated protection and control equipment, simulated master station module, and AGVC system. Based on the edited test cases, it automatically issues test instructions, records test data, and generates test reports. The simulated PCS / BMS energy storage unit and simulated protection and control equipment are modeled by parsing the SCD configuration file of the energy storage station. The simulated master station module is modeled by importing the master station's scheduling and forwarding point table; The simulated PCS / BMS energy storage unit and simulated protection and control equipment also include GOOSE virtual terminal connection information with the AGVC system, as well as communication configuration information; The simulated master station module records the communication forwarding information between itself and the AGVC system and configures the communication parameters; the simulated master station module and the AGVC system adopt the IEC104 communication protocol.

3. The AGVC testing system for an electrochemical energy storage station as described in claim 2, characterized in that: It also includes a human-machine interface module that connects to the test execution module for configuring test cases.

4. The AGVC testing system for an electrochemical energy storage station as described in claim 2, characterized in that: It also includes a report generation module connected to the test execution module, used to generate test reports in a specified format.

5. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the program, it implements the AGVC testing method for an electrochemical energy storage station as described in claim 1.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the AGVC testing method for an electrochemical energy storage station as described in claim 1.

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