Main transformer tripping matrix visual simulation test system and method capable of automatically generating graph model

Abstract

The invention discloses a visualized simulation test method for a main transformer tripping matrix with an automatic graph model generation function, and also discloses a visualized simulation test system for the main transformer tripping matrix with the automatic graph model generation function, so that the problem of testing the main transformer protection tripping matrix of a transformer substation is solved, and the modeling speed and the test efficiency are remarkably improved; according to the method, the primary equipment model of the transformer substation is automatically established by analyzing the SCD file and calling the typical power grid primary equipment model library, so that field debugging personnel can automatically establish a test model without professional simulation knowledge, and the use threshold of the testing personnel is remarkably reduced; typical fault points are set to correspond to various protection tripping logics of main transformer protection, tripping matrix outlets are associated to corresponding circuit breaker primitives, after simulation testing is started, all fault points and fault types can be traversed automatically, tripping process testing of various scenes is achieved in a full-automatic mode, testing comprehensiveness is improved, and testing efficiency is improved. And the damage to primary equipment is also avoided.

Description

Technical Field

[0001] This invention belongs to the field of intelligent substation operation and maintenance technology, specifically involving a visualization simulation test method for main transformer trip matrix automatically generated from graphical models, and a visualization simulation test system for main transformer trip matrix automatically generated from graphical models. Background Technology

[0002] Currently, the testing of the main transformer protection trip matrix is ​​frequently involved in the commissioning of substation relay protection. Although some technologies have solved the consistency test of the trip matrix outputs, the coordination process of the trip outputs of each protection logic is not tested. While actual substation switches can be used for trip coordination experiments, repeated testing is not feasible as it can damage the primary equipment and hinder comprehensive verification. Existing digital simulation tests can simulate primary models, but their model building process is too complex, with too many parameters, making them inefficient and inconvenient to use in the substation field.

[0003] Therefore, there is an urgent need for a test system and method that is suitable for testing the tripping matrix of the main transformer protection in substations, supports automatic modeling, can comprehensively test the tripping process of various fault points and fault locations, and displays the results visually. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the existing technology by providing a visualization simulation test method for automatically generating the main transformer trip matrix from the diagram, and also providing a visualization simulation test system for automatically generating the main transformer trip matrix from the diagram. This solves the problem of testing the main transformer protection trip matrix in substations and significantly improves modeling speed and testing efficiency.

[0005] The above-mentioned objectives of the present invention are achieved by the following technical means: The method for visual simulation testing of main transformer tripping matrix automatically generated from graphical models is characterized by the following steps: Step 1: Establish a primary equipment model library and a fault model library through the human-computer interaction module; Step 2: Establish the mapping relationship between the trip matrix settings, trip matrix positions, trip outputs, and GOOSE outputs of each protection function module of the main transformer protection device through the human-machine interaction module, and import them into the matrix verification module. Step 3: Construct an instantiated primary equipment model of the substation using the automatic modeling module; Step 4: Construct test items for each main transformer protection device through the test control module. The test items for the main transformer protection device include all test items for each protection function module corresponding to the main transformer protection device. Step 5: The test control module sequentially executes each test item of each protection function module of each main transformer protection device, obtains the test results corresponding to each test item, and outputs them to the human-machine interaction module for display.

[0006] As described above, step 3 specifically includes the following steps: Step 3.1: Import the SCD file into the automatic modeling module. The automatic modeling module parses the SCD file and extracts the SSD information, IED device information, and IED device communication parameters from the SCD file. Step 3.2: Extract the primary system topology of the substation, including the topological connection relationships of each primary device, and the association information between primary devices and IED devices from the SSD information; Step 3.3: Retrieve the primary equipment template corresponding to the primary equipment type from the primary equipment model library according to the primary equipment type, and connect the primary equipment templates according to the topology connection relationship of each primary equipment to draw the primary equipment model of the substation. Step 3.4: Establish MMS communication with each IED device based on its communication parameters; Step 3.5: Based on the association information between the primary equipment and the IED equipment, obtain the model parameters related to the corresponding primary equipment in each IED equipment through MMS communication; The model parameters related to the corresponding primary equipment in each IED device include line protection parameters and main transformer protection parameters. The line protection parameters include positive sequence capacitive reactance, zero sequence capacitive reactance, positive sequence impedance, zero sequence impedance, reactor impedance, small reactor impedance, line length, CT ratio, and PT ratio. The main transformer protection parameters include the rated capacity, rated voltage, CT ratio, and PT ratio of each side of the main transformer. Step 3.6: Instantiate the model parameters related to each primary device into the corresponding primary device template; Step 3.7: Based on the association information between the primary equipment and the IED equipment, extract the GOOSE output signal of the corresponding primary equipment, and establish an association with the circuit breaker equipment in the corresponding primary equipment bay to obtain the instantiated primary equipment model.

[0007] The test project described in step 4 above is constructed through the following steps: Step 4.1: Traverse each main transformer protection device in the SCD file and build a corresponding test project for each main transformer protection device; Step 4.2: Traverse each protection function module of the main transformer protection device and divide the test items into a first-level directory based on each protection function module; Step 4.3: Construct test entries for all fault point types under the first-level directory corresponding to the protection function type. The test entries include the fault point location, trip matrix setting, and test results. The test results include GOOSE output change signals, protection action events, and verification results. The protection function modules include a longitudinal differential protection module, a high-voltage side overcurrent protection module and a high-voltage side zero-sequence overcurrent protection module, a medium-voltage side overcurrent protection module and a medium-voltage side zero-sequence overcurrent protection module, a low-voltage side overcurrent protection module and a low-voltage side zero-sequence overcurrent protection module, a high-voltage side impedance protection module, and a medium-voltage side impedance protection module. The fault point types include single-phase ground fault model, two-phase short circuit model, two-phase short circuit to ground model, and three-phase short circuit model.

[0008] As mentioned above, the fault points corresponding to the longitudinal differential protection module are set on each side of the transformer, or respectively on the connection lines between each side of the transformer and the CT. The fault points corresponding to the high-voltage side overcurrent protection and the high-voltage side zero-sequence overcurrent protection are located on the high-voltage side of the transformer or on the line connected to the high-voltage side bus. The fault points corresponding to the medium-voltage side overcurrent protection module and the medium-voltage side zero-sequence overcurrent protection module are located on the medium-voltage side of the transformer or on the line connected to the medium-voltage side bus. The fault points corresponding to the low-voltage side overcurrent protection module and the low-voltage side zero-sequence overcurrent protection module are located on the low-voltage side of the transformer or on the line connected to the low-voltage side bus. The fault point corresponding to the high-voltage side impedance protection module is set on the line connected to the high-voltage side bus. The fault point corresponding to the medium-voltage side impedance protection module is set on the line connected to the medium-voltage side bus.

[0009] The location of the fault point is adjusted according to the protection settings of each protection function module, specifically as follows: When the protection setting is the impedance class setting of high voltage side impedance protection and medium voltage side impedance protection, the position of the fault point on the line is adjusted so that the line impedance at the fault point is greater than 80% of the impedance class setting and less than 90% of the impedance class setting. When the requirements cannot be met for the entire length of the line, the line impedance at the fault point is replaced with the total impedance after adding the fault point's overcurrent resistance and the line impedance. When the protection settings are overcurrent protection and zero-sequence overcurrent protection on the high-voltage side, overcurrent protection and zero-sequence overcurrent protection on the medium-voltage side, and overcurrent protection and zero-sequence overcurrent protection on the low-voltage side, the fault location of the Class I overcurrent protection settings is set at 50% of the total line length; the fault location of the Class II overcurrent protection settings is set at 90% of the total line length; and the fault location of the Class III overcurrent protection settings is set at 100% of the total line length, with an increased overcurrent resistance at the fault location.

[0010] The test control module executes test entries by following these steps: Step 5.1: The test control module calls the primary equipment model and sets the fault point in the primary equipment model according to the location of the fault point; Step 5.2: The test control module calls the fault calculation model to calculate the fault simulation quantity of the current test item, and outputs the fault simulation quantity through the SV transceiver module; Step 5.2: After the protection function module performs the protection action, the main transformer protection device sends a GOOSE message including the GOOSE output change signal and an MMS message including the protection action event. The MMS communication module receives the MMS message including the protection action event sent by the main transformer protection device and outputs the protection action event to the test control module. The GOOSE transceiver module receives the GOOSE message including the GOOSE output change signal sent by the main transformer protection device and sends the GOOSE output change signal to the matrix verification module and the test control module. Step 5.3: The matrix verification module verifies the trip matrix setting based on the change signal of the GOOSE output: Based on the mapping relationship between the trip matrix setting, trip matrix position, trip output, and GOOSE output of the protection function module imported in Step 2, the trip matrix test setting is calculated according to the change signal of the GOOSE output. The trip matrix test setting is checked against the trip matrix setting of the test item, and the check result is generated and output to the test control module. Step 5.4: The test control module records the displacement signal, protection action event, and verification result of the GOOSE output into the corresponding test results.

[0011] A computer device includes a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps of the main transformer trip matrix visualization simulation test method as described above, which automatically generates a graphical model.

[0012] A computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, it implements the steps of the main transformer trip matrix visualization simulation test method as described above, which automatically generates a graphical model.

[0013] A computer program product includes a computer program that, when executed by a processor, implements the steps of a visualization simulation test method for automatically generating a main transformer tripping matrix as described above.

[0014] Compared with the prior art, the present invention has the following advantages: (1) Significantly improved modeling efficiency: By parsing the SCD file and calling the typical power grid primary equipment model library, the primary equipment model of the substation is automatically built, so that the on-site commissioning personnel do not need professional simulation knowledge to automatically build the test model, which significantly reduces the threshold for test personnel to use.

[0015] (2) Automatic Trip Matrix Test: By setting up typical fault points to correspond to various protection tripping logics of the main transformer protection, and by associating the output of the trip matrix with the corresponding circuit breaker element, after starting the simulation test, it can automatically traverse all fault points and fault types, and fully automatically realize the tripping process test of various scenarios, which not only improves the comprehensiveness of the test, but also avoids damage to the primary equipment. Attached Figure Description

[0016] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0017] To facilitate understanding and implementation of the present invention by those skilled in the art, the present invention will be further described in detail below with reference to embodiments. The embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Example 1: like Figure 1 As shown, the visualization simulation test method for the main transformer tripping matrix automatically generated by the graphical model includes the following steps: Step 1: Establish a primary equipment model library and a fault model library through the human-computer interaction module; Step 2: Establish the mapping relationship between the trip matrix settings, trip matrix positions, trip outputs, and GOOSE outputs of each protection function module of the main transformer protection device through the human-machine interaction module, and import them into the matrix verification module. In this embodiment, the protection function modules include a longitudinal differential protection module, a high-voltage side overcurrent protection module and a high-voltage side zero-sequence overcurrent protection module, a medium-voltage side overcurrent protection module and a medium-voltage side zero-sequence overcurrent protection module, a low-voltage side overcurrent protection module and a low-voltage side zero-sequence overcurrent protection module, a high-voltage side impedance protection module, and a medium-voltage side impedance protection module. Step 3: Construct an instantiated primary equipment model of the substation using the automatic modeling module, specifically including the following steps: Step 3.1: Import the SCD file into the automatic modeling module. The automatic modeling module parses the SCD file and extracts the SSD information, IED device information, and IED device communication parameters from the SCD file. Step 3.2: Extract the primary system topology of the substation, including the topological connection relationships of each primary device, and the association information between primary devices and IED devices from the SSD information; Step 3.3: Retrieve the primary equipment template corresponding to the primary equipment type from the primary equipment model library according to the primary equipment type, and connect the primary equipment templates according to the topology connection relationship of each primary equipment to draw the primary equipment model of the substation. Step 3.4: Establish MMS communication with each IED device based on its communication parameters; Step 3.5: Based on the association information between the primary equipment and the IED equipment, obtain the model parameters related to the corresponding primary equipment in each IED equipment through MMS communication; The model parameters related to the corresponding primary equipment in each IED device include line protection parameters and main transformer protection parameters. The line protection parameters include positive sequence capacitive reactance, zero sequence capacitive reactance, positive sequence impedance, zero sequence impedance, reactor impedance, small reactor impedance, line length, CT ratio, and PT ratio. The main transformer protection parameters include the rated capacity, rated voltage, CT ratio, and PT ratio of each side of the main transformer. Step 3.6: Instantiate the model parameters related to each primary device into the corresponding primary device template; Step 3.7: Based on the association information between the primary equipment and the IED equipment, extract the GOOSE output signal of the corresponding primary equipment, and establish an association with the circuit breaker equipment in the corresponding primary equipment bay to obtain the instantiated primary equipment model.

[0019] The automatic modeling module of this invention automatically builds a substation primary model by parsing SCD files and calling the primary equipment model library, enabling on-site commissioning personnel to automatically build test models without professional simulation knowledge, significantly reducing the usage threshold for test personnel.

[0020] Step 4: Construct test items for each main transformer protection device through the test control module. The test items for the main transformer protection device include all test items for each protection function module corresponding to the main transformer protection device, specifically including the following steps: Step 4.1: Traverse each main transformer protection device in the SCD file and build a corresponding test project for each main transformer protection device; Step 4.2: Traverse each protection function module of the main transformer protection device and divide the test items into a first-level directory based on each protection function module; Step 4.3: Construct test entries for all fault point types under the first-level directory corresponding to the protection function type. The test entries include the fault point location, trip matrix setting, and test results. The test results include GOOSE output change signals, protection action events, and verification results.

[0021] As one possible implementation method, the fault point types include single-phase ground fault model, two-phase short circuit model, two-phase short-circuit ground fault model, and three-phase short circuit model.

[0022] As one possible implementation, the location of the fault point corresponding to the longitudinal differential protection module is set on each side of the transformer, or respectively set on the connection line between each side of the transformer and the CT. The fault points corresponding to the high-voltage side overcurrent protection and the high-voltage side zero-sequence overcurrent protection can be set on the high-voltage side of the transformer or on the line connected to the high-voltage side bus. The fault points corresponding to the medium-voltage side overcurrent protection module and the medium-voltage side zero-sequence overcurrent protection module can be set on the medium-voltage side of the transformer or on the line connected to the medium-voltage side bus. The fault points corresponding to the low-voltage side overcurrent protection module and the low-voltage side zero-sequence overcurrent protection module can be set on the low-voltage side of the transformer or on the line connected to the low-voltage side bus. The location of the fault point corresponding to the high-voltage side impedance protection module is set on the line connected to the high-voltage side bus. The fault point corresponding to the medium-voltage side impedance protection module is located on the line connected to the medium-voltage side bus.

[0023] This invention also adjusts the location of the fault point according to the protection settings of each protection function module, specifically: When the protection setting is the impedance-type setting of high-voltage side impedance protection and medium-voltage side impedance protection, the location of the fault point on the line is adjusted so that the line impedance at the fault point location is greater than 80% of the impedance-type setting and less than 90% of the impedance-type setting. When the requirements cannot be met for the entire line length, the line impedance at the fault point location is replaced with the total impedance after adding the transition resistance of the fault point and the line impedance.

[0024] When the protection settings are overcurrent protection and zero-sequence overcurrent protection on the high-voltage side, overcurrent protection and zero-sequence overcurrent protection on the medium-voltage side, and overcurrent protection and zero-sequence overcurrent protection on the low-voltage side, the fault location of the Class I overcurrent protection settings is set at 50% of the total line length; the fault location of the Class II overcurrent protection settings is set at 90% of the total line length; and the fault location of the Class III overcurrent protection settings is set at 100% of the total line length, with an increased overcurrent resistance at the fault location.

[0025] Step 5: The test control module sequentially executes each test item of each protection function module of each main transformer protection device, obtains the test results corresponding to each test item, and outputs them to the human-machine interaction module for display. The execution of each test item by the test control module specifically includes the following steps: Step 5.1: The test control module calls the primary equipment model and sets the fault point in the primary equipment model according to the location of the fault point; Step 5.2: The test control module calls the fault calculation model to calculate the fault simulation quantity of the current test item, and outputs the fault simulation quantity through the SV transceiver module; Step 5.2: After the protection function module performs the protection action, the main transformer protection device sends a GOOSE message including the GOOSE output change signal and an MMS message including the protection action event. The MMS communication module receives the MMS message including the protection action event sent by the main transformer protection device and outputs the protection action event to the test control module. The GOOSE transceiver module receives the GOOSE message including the GOOSE output change signal sent by the main transformer protection device and sends the GOOSE output change signal to the matrix verification module and the test control module. Step 5.3: The matrix verification module verifies the trip matrix setting based on the change signal of the GOOSE output: Based on the mapping relationship between the trip matrix setting, trip matrix position, trip output, and GOOSE output of the protection function module imported in Step 2, the trip matrix test setting is calculated according to the change signal of the GOOSE output. The trip matrix test setting is checked against the trip matrix setting of the test item, and the check result is generated and output to the test control module.

[0026] Step 5.4: The test control module records the displacement signal, protection action event, and verification result of the GOOSE output into the corresponding test results.

[0027] This invention can establish typical fault points in the primary equipment model; by automatically traversing all fault points and fault types, it can automatically perform tripping tests for all fault point types of each protection function module of each main transformer protection device, thereby improving the comprehensiveness of the test.

[0028] Example 2: A visualization simulation test system for main transformer tripping matrix automatically generated from graphical models, including: The primary equipment model library stores primary equipment model templates for use by the automatic modeling module. The primary equipment templates include line templates, busbar templates, transformer templates, bus tie templates, reactor templates, capacitor templates, circuit breaker templates, disconnector templates, CT templates, and PT templates.

[0029] The automatic modeling module is used to parse the SCD file to extract the primary system topology and the relationship between primary equipment and IED equipment; call the primary equipment model library to draw the primary equipment model of the substation; call the MMS communication module to establish MMS communication with the IED equipment, obtain the model parameters related to the primary equipment, and instantiate each primary equipment template in the primary equipment model.

[0030] The MMS communication module is used to establish MMS communication with IED devices (including main transformer protection devices) to obtain protection settings and trip matrix settings; it is also used to receive MMS messages including protection action events sent by the main transformer protection device and output the protection action events to the test control module, which records the protection action events in the test results.

[0031] The SV transceiver module is used to output fault analog quantities and also to send and receive SV data.

[0032] The GOOSE transceiver module receives the GOOSE message, which includes the change signal from the GOOSE output, sent by the main transformer protection device, and sends the change signal from the GOOSE output to the matrix verification module.

[0033] The fault model library provides various fault point models and the correlation between the fault points and the primary equipment corresponding to the typical protection function types of the main transformer protection. It also supports setting fault parameters. The fault point models include single-phase ground fault model, two-phase short circuit model, two-phase short circuit to ground model, and three-phase short circuit model. It also supports setting fault parameters including fault phase, fault time, fault nature, and over-resistance.

[0034] The matrix verification module retrieves the mapping relationships of trip matrix settings, trip matrix bits, trip outputs, and GOOSE outputs for each protection function module of the main transformer protection device. Based on the relevant protection manual materials of the manufacturer's model, establish the correlation between the main transformer protection function type and the trip matrix, and combine the contents of the corresponding SCD of the manufacturer's model to establish the correlation between each trip output and GOOSE output signal in the trip matrix, and verify the trip matrix based on the test data; The trip matrix test setting is calculated based on the change signal of GOOSE output. The trip matrix test setting is then checked against the trip matrix setting of the test item, and a check result (i.e., whether the check is consistent or inconsistent) is generated. The check result is then output to the test result of the test item.

[0035] The test control module is used to construct test items for each main transformer protection device. The test items for the main transformer protection device include all test entries for each protection function module corresponding to the main transformer protection device. The test entries include fault location, trip matrix setting, and test results. The test results include the test process, trip information, protection action events, and verification results. It is also used by the test control module to call the primary equipment model and set the fault point in the primary equipment model according to the location of the fault point. It is also used by the test control module to call the fault calculation model to calculate the fault simulation quantity of the current test item and output it to the SV transceiver module. The human-computer interaction module is used to import SCD files, and can also call and display the instantiated primary equipment model built by the automatic modeling module; after the test is completed, it can also call and display the test items and test results from the test control module.

[0036] In one embodiment, a computer device is also provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to implement the steps in the above method embodiments.

[0037] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements the steps in the above method embodiments.

[0038] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above method embodiments.

[0039] It should be noted that the embodiments described in this invention are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains can make various modifications or additions to the described embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A visualization simulation test method for main transformer tripping matrix automatically generated from graphical models, characterized in that, Includes the following steps: Step 1: Establish a primary equipment model library and a fault model library through the human-computer interaction module; Step 2: Establish the mapping relationship between the trip matrix settings, trip matrix positions, trip outputs, and GOOSE outputs of each protection function module of the main transformer protection device through the human-machine interaction module, and import them into the matrix verification module. Step 3: Construct an instantiated primary equipment model of the substation using the automatic modeling module; Step 4: Construct test items for each main transformer protection device through the test control module. The test items for the main transformer protection device include all test items for each protection function module corresponding to the main transformer protection device. Step 5: The test control module sequentially executes each test item of each protection function module of each main transformer protection device, obtains the test results corresponding to each test item, and outputs them to the human-machine interaction module for display.

2. The visualization simulation test method for the main transformer tripping matrix automatically generated according to claim 1, characterized in that, Step 3 specifically includes the following steps: Step 3.1: Import the SCD file into the automatic modeling module. The automatic modeling module parses the SCD file and extracts the SSD information, IED device information, and IED device communication parameters from the SCD file. Step 3.2: Extract the primary system topology of the substation, including the topological connection relationships of each primary device, and the association information between primary devices and IED devices from the SSD information; Step 3.3: Retrieve the primary equipment template corresponding to the primary equipment type from the primary equipment model library according to the primary equipment type, and connect the primary equipment templates according to the topology connection relationship of each primary equipment to draw the primary equipment model of the substation. Step 3.4: Establish MMS communication with each IED device based on its communication parameters; Step 3.5: Based on the association information between the primary equipment and the IED equipment, obtain the model parameters related to the corresponding primary equipment in each IED equipment through MMS communication; The model parameters related to the corresponding primary equipment in each IED device include line protection parameters and main transformer protection parameters. The line protection parameters include positive sequence capacitive reactance, zero sequence capacitive reactance, positive sequence impedance, zero sequence impedance, reactor impedance, small reactor impedance, line length, CT ratio, and PT ratio. The main transformer protection parameters include the rated capacity, rated voltage, CT ratio, and PT ratio of each side of the main transformer. Step 3.6: Instantiate the model parameters related to each primary device into the corresponding primary device template; Step 3.7: Based on the association information between the primary equipment and the IED equipment, extract the GOOSE output signal of the corresponding primary equipment, and establish an association with the circuit breaker equipment in the corresponding primary equipment bay to obtain the instantiated primary equipment model.

3. The visualization simulation test method for the main transformer tripping matrix automatically generated according to claim 2, characterized in that, The test item in step 4 is constructed through the following steps: Step 4.1: Traverse each main transformer protection device in the SCD file and build a corresponding test project for each main transformer protection device; Step 4.2: Traverse each protection function module of the main transformer protection device and divide the test items into a first-level directory based on each protection function module; Step 4.3: Construct test entries for all fault point types under the first-level directory corresponding to the protection function type. The test entries include the fault point location, trip matrix setting, and test results. The test results include GOOSE output change signals, protection action events, and verification results. The protection function modules include a longitudinal differential protection module, a high-voltage side overcurrent protection module and a high-voltage side zero-sequence overcurrent protection module, a medium-voltage side overcurrent protection module and a medium-voltage side zero-sequence overcurrent protection module, a low-voltage side overcurrent protection module and a low-voltage side zero-sequence overcurrent protection module, a high-voltage side impedance protection module, and a medium-voltage side impedance protection module. The fault point types include single-phase ground fault model, two-phase short circuit model, two-phase short circuit to ground model, and three-phase short circuit model.

4. The visualization simulation test method for the main transformer tripping matrix automatically generated according to claim 3, characterized in that, The fault points corresponding to the longitudinal differential protection module are set on each side of the transformer, or respectively on the connection lines between each side of the transformer and the CT. The fault points corresponding to the high-voltage side overcurrent protection and the high-voltage side zero-sequence overcurrent protection are located on the high-voltage side of the transformer or on the line connected to the high-voltage side bus. The fault points corresponding to the medium-voltage side overcurrent protection module and the medium-voltage side zero-sequence overcurrent protection module are located on the medium-voltage side of the transformer or on the line connected to the medium-voltage side bus. The fault points corresponding to the low-voltage side overcurrent protection module and the low-voltage side zero-sequence overcurrent protection module are located on the low-voltage side of the transformer or on the line connected to the low-voltage side bus. The fault point corresponding to the high-voltage side impedance protection module is set on the line connected to the high-voltage side bus. The fault point corresponding to the medium-voltage side impedance protection module is set on the line connected to the medium-voltage side bus.

5. The visualization simulation test method for the main transformer tripping matrix automatically generated according to claim 4, characterized in that, The location of the fault point is adjusted according to the protection settings of each protection function module, specifically as follows: When the protection setting is the impedance class setting of high voltage side impedance protection and medium voltage side impedance protection, the position of the fault point on the line is adjusted so that the line impedance at the fault point is greater than 80% of the impedance class setting and less than 90% of the impedance class setting. When the requirements cannot be met for the entire length of the line, the line impedance at the fault point is replaced with the total impedance after adding the fault point's overcurrent resistance and the line impedance. When the protection settings are overcurrent protection and zero-sequence overcurrent protection on the high-voltage side, overcurrent protection and zero-sequence overcurrent protection on the medium-voltage side, and overcurrent protection and zero-sequence overcurrent protection on the low-voltage side, the fault location of the Class I overcurrent protection settings is set at 50% of the total line length; the fault location of the Class II overcurrent protection settings is set at 90% of the total line length; and the fault location of the Class III overcurrent protection settings is set at 100% of the total line length, with an increased overcurrent resistance at the fault location.

6. The visualization simulation test method for the main transformer tripping matrix automatically generated according to claim 5, characterized in that, The test control module executes test entries by following these steps: Step 5.1: The test control module calls the primary equipment model and sets the fault point in the primary equipment model according to the location of the fault point; Step 5.2: The test control module calls the fault calculation model to calculate the fault simulation quantity of the current test item, and outputs the fault simulation quantity through the SV transceiver module; Step 5.2: After the protection function module performs the protection action, the main transformer protection device sends a GOOSE message including the GOOSE output change signal and an MMS message including the protection action event. The MMS communication module receives the MMS message including the protection action event sent by the main transformer protection device and outputs the protection action event to the test control module. The GOOSE transceiver module receives the GOOSE message including the GOOSE output change signal sent by the main transformer protection device and sends the GOOSE output change signal to the matrix verification module and the test control module. Step 5.3: The matrix verification module verifies the trip matrix setting based on the change signal of the GOOSE output: Based on the mapping relationship between the trip matrix setting, trip matrix position, trip output, and GOOSE output of the protection function module imported in Step 2, the trip matrix test setting is calculated according to the change signal of the GOOSE output. The trip matrix test setting is checked against the trip matrix setting of the test item, and the check result is generated and output to the test control module. Step 5.4: The test control module records the displacement signal, protection action event, and verification result of the GOOSE output into the corresponding test results.

7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the main transformer trip matrix visualization simulation test method that automatically generates the graphical model according to any one of claims 1 to 6.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the steps of the visualization simulation test method for automatically generating the main transformer tripping matrix according to any one of claims 1 to 6.

9. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the visualization simulation test method for automatically generating the main transformer tripping matrix as described in any one of claims 1 to 6.

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