Intelligent substation transformer protection device outlet matrix detection method and system

Abstract

The present application relates to a kind of intelligent station transformer protection device export matrix detection method and system, belong to the technical field of relay protection device test.The present application obtains the tripping outlet matrix setting value of intelligent station transformer protection device, detects the actual tripping outlet when power grid disturbance protection action occurs, compares the actual tripping outlet with the expected outlet number of each tripping outlet matrix position, to calculate the tripping outlet matrix action value, finally compares tripping outlet matrix action value and tripping outlet matrix setting value, according to the comparison result whether the tripping outlet of intelligent station transformer protection device is correct is judged.Obviously, the whole process of the present application can realize the detection of the tripping outlet matrix of intelligent station transformer protection device without special test instrument, using the double determination of expected outlet number and actual outlet condition and using setting value, whether the tripping outlet matrix is correct action can be accurately judged, and also can save time and save labor cost.

Description

Technical Field

[0001] This invention relates to a method and system for detecting the output matrix of a smart substation transformer protection device, belonging to the field of relay protection device testing technology. Background Technology

[0002] Transformers are core equipment in substations, performing voltage transformation and undertaking the important tasks of energy transmission and distribution. Transformer protection devices are designed to ensure the safe and stable operation of transformers. If their tripping outputs are incorrect, disturbances in the power grid may cause the substation to experience an expanded power outage or damage to transformers and other electrical equipment, further affecting the safe and stable operation of the substation or the regional power system.

[0003] Transformers are classified by structure into two-winding transformers, three-winding transformers, and autotransformers. Transformer protection devices, depending on the transformer type, require main protection and backup protection for the high-voltage side, medium-voltage side, low-voltage side, and common winding. The number of protection devices can range from dozens to hundreds. The trip output matrix of each protection device in a transformer protection system can be flexibly set. For example, differential protection can be set with several trip output matrix positions (trip high-voltage side, trip high-voltage side bus tie, trip medium-voltage side, trip medium-voltage side bus tie, trip low-voltage 1 side branch, trip low-voltage 2 side branch, trip low-voltage side backup automatic transfer). Each trip output matrix position drives different GOOSE trip outputs. For example, the high-voltage side trip output matrix position drives the high-voltage 1 side circuit breaker output, initiates the high-voltage 1 side failure output, the high-voltage 2 side circuit breaker output, and initiates the high-voltage 2 side failure output.

[0004] For example, Chinese patent application CN107064693A discloses a test device and method for a relay protection device output matrix. The first communication interface and protection trip output contact of the relay protection device under test are connected to the first communication interface and switch input contact of the relay protection device output matrix test device, respectively. The second Ethernet communication interface of the relay protection device output matrix test device is connected to the second Ethernet communication interface of the relay protection tester. The current analog output interface, switch output contact, and voltage analog output interface of the relay protection tester are connected to the current analog input interface, switch input contact, and power analog input interface of the relay protection device under test, respectively. While the above solution can also detect the output matrix of the relay protection device, when there are many protection trip output contacts and many circuit wirings, it may be necessary to expand the hardware for switch inputs, increasing the related hardware costs. Furthermore, the solution may damage the original wiring of the relay protection trip output contacts. If there is wiring at the relay protection trip output, the connection of the output matrix test device contacts may affect the original wiring (such as removing the original wiring of the trip output).

[0005] Furthermore, the trip output of the current intelligent transformer protection device is an optical digital signal. The detection of optical digital signals requires specialized testing equipment or instruments. Moreover, the instruments can usually only monitor the trip output action and cannot determine the correctness of the trip output matrix. At the same time, it requires a high level of expertise in communication and relay protection for the testing personnel, and the testing process is time-consuming and labor-intensive. Summary of the Invention

[0006] The purpose of this invention is to provide a method and system for detecting the output matrix of a smart substation transformer protection device, so as to solve the problem of low detection efficiency in the current detection process.

[0007] To address the aforementioned technical problems, this invention provides, in a first aspect, a method for detecting the output matrix of a smart substation transformer protection device, the method comprising the following steps: 1) Obtain the trip output matrix setting values ​​of the intelligent substation transformer protection device; 2) Determine the expected number of outputs for each trip output matrix bit of the transformer protection device in the intelligent substation based on the SCD file of the intelligent substation; 3) Simulate disturbances in the power grid system, detect the actual tripping output of the intelligent substation transformer protection device, and compare it with the expected number of outputs of the corresponding tripping output matrix bit to obtain the action value of each tripping output matrix bit; 4) Calculate the actual operating value of the trip output matrix under the protection action based on the operating value of each trip output matrix bit under the protection action, and compare the actual operating value of the trip output matrix with the corresponding trip output matrix setting value. If the two are consistent, it means that the protection action output matrix is ​​operating correctly; otherwise, it means that the protection action output matrix is ​​operating incorrectly.

[0008] In one possible implementation, determining the expected number of outputs for each trip output matrix bit includes: receiving the virtual terminal connection of the GOOSE trip output of the transformer protection device by parsing the intelligent station SCD file, setting the trip output matrix bit corresponding to the GOOSE trip output of the virtual terminal connection, and calculating the expected number of outputs for each trip output matrix bit of the intelligent station transformer protection device.

[0009] In one possible implementation, the process of determining the action value of each trip output matrix bit includes: When the expected number of trip outputs in the trip output matrix bit is greater than 0 and equal to the actual number of trip outputs in the trip output matrix bit, the trip output matrix bit is judged to have acted correctly; when the expected number of trip outputs in the trip output matrix bit is greater than 0 and not equal to the actual number of trip outputs in the trip output matrix bit, the trip output matrix bit is judged to have acted incorrectly.

[0010] In one possible implementation, when it is determined that the trip output matrix bit is operating correctly, the operation flag value of the trip output matrix bit is set to 1; when it is determined that the trip output matrix bit is operating incorrectly, the operation flag value of the trip output matrix bit is set to 0. The actual operation value of the trip output matrix is ​​calculated based on the operation flag values ​​of each trip output matrix bit.

[0011] In one possible implementation, when comparing the actual action value of the trip output matrix with the corresponding set value of the trip output matrix, the data type of the actual action value of the trip output matrix is ​​converted to the same type as the set value of the trip output matrix.

[0012] In one possible implementation, the determination of whether the protection action output matrix action is correct is completed during the trip output action of the intelligent substation transformer protection device.

[0013] In one possible implementation, the trip output matrix setting value is obtained from the intelligent substation transformer protection device via the MMS communication protocol or the IEC103 communication protocol.

[0014] To address the aforementioned technical problems, a second aspect of the present invention provides an intelligent substation transformer protection device output matrix detection system, comprising a processor, wherein the processor executes a computer program to implement an intelligent substation transformer protection device output matrix detection method comprising the following steps: 1) Obtain the trip output matrix setting values ​​of the intelligent substation transformer protection device; 2) Determine the expected number of outputs for each trip output matrix bit of the transformer protection device in the intelligent substation based on the SCD file of the intelligent substation; 3) Simulate disturbances in the power grid system, detect the actual tripping output of the intelligent substation transformer protection device, and compare it with the expected number of outputs of the corresponding tripping output matrix bit to obtain the action value of each tripping output matrix bit; 4) Calculate the actual operating value of the trip output matrix under the protection action based on the operating value of each trip output matrix bit under the protection action, and compare the actual operating value of the trip output matrix with the corresponding trip output matrix setting value. If the two are consistent, it means that the protection action output matrix is ​​operating correctly; otherwise, it means that the protection action output matrix is ​​operating incorrectly.

[0015] In one possible implementation, determining the expected number of outputs for each trip output matrix bit includes: receiving the virtual terminal connection of the GOOSE trip output of the transformer protection device by parsing the intelligent station SCD file, setting the trip output matrix bit corresponding to the GOOSE trip output of the virtual terminal connection, and calculating the expected number of outputs for each trip output matrix bit of the intelligent station transformer protection device.

[0016] In one possible implementation, the process of determining the action value of each trip output matrix bit includes: When the expected number of trip outputs in the trip output matrix bit is greater than 0 and equal to the actual number of trip outputs in the trip output matrix bit, the trip output matrix bit is judged to have acted correctly; when the expected number of trip outputs in the trip output matrix bit is greater than 0 and not equal to the actual number of trip outputs in the trip output matrix bit, the trip output matrix bit is judged to have acted incorrectly.

[0017] In one possible implementation, when it is determined that the trip output matrix bit is operating correctly, the operation flag value of the trip output matrix bit is set to 1; when it is determined that the trip output matrix bit is operating incorrectly, the operation flag value of the trip output matrix bit is set to 0. The actual operation value of the trip output matrix is ​​calculated based on the operation flag values ​​of each trip output matrix bit.

[0018] In one possible implementation, when comparing the actual action value of the trip output matrix with the corresponding set value of the trip output matrix, the data type of the actual action value of the trip output matrix is ​​converted to the same type as the set value of the trip output matrix.

[0019] In one possible implementation, the determination of whether the protection action output matrix action is correct is completed during the trip output action of the intelligent substation transformer protection device.

[0020] In one possible implementation, the trip output matrix setting value is obtained from the intelligent substation transformer protection device via the MMS communication protocol or the IEC103 communication protocol.

[0021] In one possible implementation, the processor acts as a communication client to communicate with the station control layer of the intelligent substation transformer protection device to obtain the trip output matrix setting value of the intelligent substation transformer protection device.

[0022] In one possible implementation, the processor is used to communicate with the station control layer and process layer of the intelligent substation transformer protection device to detect the actual tripping output of the protection action of the intelligent substation transformer protection device.

[0023] The beneficial effects of this invention are as follows: This invention first detects the actual tripping output when the power grid disturbance protection operates. It compares the actual tripping output with the expected number of outputs for each position in the tripping output matrix to calculate the tripping output matrix action value. Then, it compares the tripping output matrix action value with the tripping output matrix setting value. Based on the comparison result, it determines whether the tripping output of the intelligent substation transformer protection device is correct. Therefore, the entire process of this invention does not require a dedicated testing instrument to detect the tripping output matrix of the intelligent substation transformer protection device, and the entire process does not require manual judgment, avoiding potential human error. Furthermore, this invention utilizes the dual judgment of the expected number of outputs and the actual output situation, as well as the setting value, to accurately determine whether the tripping output matrix has operated correctly, while also saving time and labor costs.

[0024] The trip output of the intelligent substation transformer protection device is a GOOSE output of optical signals. This invention collects the trip output signal of the intelligent substation transformer protection device through a single optical fiber. The circuit wiring is simple and does not require additional wiring costs. Especially when there are multiple protection trip output contacts, existing technologies have complex circuit wiring and may require the expansion of hardware for switch inputs. In addition, using existing technical solutions to access the trip output contacts of relay protection may damage the original wiring of the relay protection trip output contacts. If there is wiring at the relay protection trip output, the connection of the output matrix test device contacts may affect the original wiring (such as removing the original wiring of the trip output). The optical fiber of this invention, which collects the GOOSE output, is connected to the spare optical port or process layer switch optical port of the device under test, without changing or affecting the output of the device under test. Attached Figure Description

[0025] Figure 1 This is a flowchart of the intelligent substation transformer protection device output matrix detection method of the present invention; Figure 2 This is a schematic diagram of the architecture of the intelligent substation transformer protection device output matrix detection system of the present invention. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0027] The present invention is based on obtaining the setting value of the trip output matrix of the intelligent substation transformer protection device, detecting the actual trip output when the power grid disturbance protection action occurs, comparing the actual trip output with the expected number of outputs for each trip output matrix position to calculate the trip output matrix action value, and comparing the trip output matrix action value with the trip output matrix setting value to determine whether the trip output of the intelligent substation transformer protection device is correct.

[0028] Specifically, the system obtains the setting values ​​of the trip output matrix of the intelligent substation transformer protection device; parses the virtual terminal connections of the GOOSE trip output of the transformer protection device from the intelligent substation SCD (system configuration file), sets the trip output matrix bits corresponding to the GOOSE trip output of the virtual terminal connections, and calculates the expected number of outputs for each trip output matrix bit of the intelligent substation transformer protection device; simulates a disturbance in the power grid system, causing the intelligent substation transformer protection to trip, detects the actual number of trip outputs during protection action, compares it with the expected number of outputs in the trip output matrix bits, and determines whether the output matrix is ​​operating correctly. If the expected number of outputs in the trip output matrix bit is greater than 0 and equal to the actual number of trip outputs in the trip output matrix bit, a judgment is made. The trip output matrix bit operates correctly; when the expected number of trip outputs of the trip output matrix bit is greater than 0 but not equal to the actual number of trip outputs of the trip output matrix bit, the trip output matrix bit is judged to operate incorrectly; calculate the trip output matrix operation value based on whether each trip output matrix bit operates, and convert the data type of the actual operation value of the trip output matrix to be consistent with the data type of the protection output matrix setting value. Compare the protection trip output matrix setting value to determine whether the output matrix operates correctly. When the protection output matrix setting value is equal to the actual operation value of the trip output matrix, the output matrix of a certain protection operation is judged to operate correctly; when the protection output matrix setting value is not equal to the actual operation value of the trip output matrix, the output matrix of a certain protection operation is judged to operate incorrectly.

[0029] An implementation method for detecting the output matrix of a smart substation transformer protection device: To facilitate the description of the principle of the intelligent substation transformer protection device output matrix detection method provided in this embodiment, the detection of the protection trip output matrix of a certain type of intelligent substation transformer protection device is used as an example for illustrative explanation.

[0030] Figure 1 This is a flowchart illustrating an intelligent substation transformer protection device output matrix detection method provided by an embodiment of the present invention, as shown below. Figure 1 As shown, the method includes the following steps: S101. By accessing the communication network of the intelligent substation transformer protection device, obtain the trip output matrix setting value and the data type of the setting value of the intelligent substation transformer protection device.

[0031] The methods for obtaining the trip output matrix setting values ​​of the intelligent substation transformer protection device include: obtaining and parsing the trip output matrix setting values ​​and data types of the intelligent substation transformer protection device through file transfer service, obtaining the trip output matrix setting values ​​and data types of the intelligent substation transformer protection device through power communication protocols of communication standards (such as IEC61850, IEC103, IEC104 communication protocols), or inputting and recording the trip output matrix setting values ​​of the intelligent substation transformer protection device in the system.

[0032] Intelligent substations provide a platform for digitizing all station information, networking communication platforms, and standardizing information sharing. The communication of transformer protection devices in intelligent substations typically conforms to the requirements of the "DL / T 860 Substation Communication Networks and Systems" standard. The station control layer communication of transformer protection devices in intelligent substations meets the MMS (Manufacturing Message Specification) communication protocol, that is, it meets the requirements of the "DL / T 860.81 Substation Communication Networks and Systems Part 8-1: Special Communication Service Mapping (SCSM) - Mapping to Manufacturing Message Specification MMS (ISO 9506-1 and ISO 9506-2) and ISO 8802-3" standard. It can also support the IEC103 communication protocol, that is, it meets the requirements of the "IEC 60870-5-103 Information Interface Supporting Standard for Relay Protection Equipment" standard, providing a communication interface for obtaining the trip output matrix setting values ​​of intelligent substation transformer protection devices. The over-control layer communication of the intelligent substation transformer protection device meets the GOOSE (Generic Object Oriented Substation Event) communication protocol, which meets the requirements of the specification "DL / T860.81 Substation Communication Networks and Systems Part 8-1: Special Communication Service Mapping (SCSM) - Mapping to Manufacturing Message Specifications MMS (ISO 9506-1 and ISO 9506-2) and ISO 8802-3", providing a communication interface for detecting the actual trip output of the intelligent substation transformer protection device.

[0033] In engineering applications, the station control layer communication of intelligent substation transformer protection devices conforms to the MMS (Manufacturing Message Specification) communication protocol. The setting values ​​and data types of the intelligent substation transformer protection trip output matrix are read through the read service. For intelligent substation transformer protection devices whose station control layer communication conforms to the IEC103 protocol, the setting values ​​and data types of the trip output matrix of the intelligent substation transformer protection device can be read through the general service classification service. The obtained trip output matrix setting values ​​and data types are then stored in the data cache for subsequent comparison. For example, if the set value of the trip output matrix for high phase-to-phase impedance protection is 0003 and the data type is hexadecimal, the corresponding trip output matrix and trip output matrix bits are shown in Table 1.

[0034] Table 1: High Phase-to-Phase Impedance Protection Trip Output Matrix and Trip Output Matrix Position S102. By parsing the intelligent station SCD (system configuration file) file, receive the virtual terminal connection of the GOOSE trip output of the transformer protection device, set the trip output matrix bit corresponding to the GOOSE trip output of the virtual terminal connection, and calculate the expected number of outputs for each trip output matrix bit of the intelligent station transformer protection device.

[0035] By parsing the intelligent station's SCD (system configuration file) file, the virtual terminal connections of the transformer protection device's GOOSE trip outputs are received. For example, the parsed GOOSE trip outputs with configured virtual terminal connections include tripping the high-voltage side circuit breaker, initiating high-voltage side failure, tripping high-voltage side bus tie 1, tripping the medium-voltage side circuit breaker, and tripping low-voltage branch circuit breaker 1. The matrix bits for these GOOSE trip outputs are manually set to 1, 1, 2, 3, and 5 respectively. The expected number of outputs for the intelligent station's transformer protection device tripping the high-voltage side (bit 1) is calculated to be 2 (tripping the high-voltage side circuit breaker, initiating high-voltage side failure), tripping the high-voltage side bus tie (bit 2) is expected to be 1 (tripping the high-voltage side bus tie 1), tripping the medium-voltage side (bit 3) is expected to be 1 (tripping the medium-voltage side circuit breaker), and tripping the medium and low-voltage side (bit 5) is expected to be 1 (tripping the low-voltage branch circuit breaker 1). The expected number of outputs for bits 3, 6, and 7 is 0. Alternatively, manual setting may not be required in other implementation methods.

[0036] The relationship between the protection trip output matrix and the GOOSE trip output of a certain intelligent substation transformer protection is shown in Table 2.

[0037] Table 2: Relationship between the protection trip output matrix and the trip GOOSE output of a certain intelligent substation transformer protection system S103. When a disturbance occurs in the simulated power grid system, a certain protection action of the intelligent station transformer device drives the output to trip. The trip output status of the intelligent station transformer protection device is detected, and the correctness of the action of each trip output matrix bit is judged one by one according to the number of outputs of each trip output matrix bit.

[0038] Specifically, the tripping output of the intelligent substation transformer protection device can be detected through communication with the station control layer and process layer communication network. When a disturbance occurs in the power grid system, the intelligent substation transformer protection device will activate its protection (such as differential current speed protection activation, high phase-to-phase impedance protection activation, etc.). The following explanation uses the high phase-to-phase impedance protection activation as an example. This invention receives the change status of the corresponding trip GOOSE output from the process layer of the intelligent substation transformer protection device through network communication with the process layer of the intelligent substation transformer protection device. If the scanning detects the tripping of the high-voltage side circuit breaker and the activation of the high-voltage side failure trip GOOSE output, the actual number of trip outputs on the high-voltage side (bit 1) is calculated to be 2, which is consistent with the expected number of trip outputs on the high-voltage side (bit 1) calculated by S102 to be 2. It is determined that the trip output matrix bit of the high-voltage side (bit 1) is correctly activated, and the activation flag value of the high-voltage side (bit 1) is set to 1. If the scanning detects the tripping of the high-voltage side circuit breaker and the activation of the high-voltage side failure trip GOOSE output, or if neither of the two trip GOOSE outputs is activated, the actual number of trip outputs on the high-voltage side (bit 1) is calculated to be 1 or 0, which is inconsistent with the expected number of trip outputs on the high-voltage side (bit 1) calculated by S102 to be 2. It is determined that the trip output matrix bit of the high-voltage side (bit 1) is incorrectly activated, and the activation flag value of the high-voltage side (bit 1) is set to 0. Similarly, it can be determined whether the trip output matrix bit of the high-voltage side bus tie (bit 2) has operated correctly. If it has operated correctly, the operation flag of the high-voltage side bus tie (bit 2) is set to 1; if it has operated incorrectly, the operation flag of the high-voltage side bus tie (bit 2) is set to 0. The determination of whether each trip output matrix bit is correct is shown in Table 3.

[0039] Table 3: Example table for determining whether each trip output matrix bit is correct In the above judgment process, the actual number of outputs for each trip output matrix bit of the intelligent substation transformer protection device is counted based on whether each output has a corresponding message. For example, if there are 4 outputs for the high-voltage side (bit 1), the actual output detection is performed by checking whether each output has a corresponding output message in a set order (e.g., outputs 1-4). If there is a message, it means that the corresponding output has been activated; otherwise, it means that the output has not been activated. When comparing the expected number of outputs with the actual number of outputs, not only the number of outputs themselves is compared, but also whether the output positions correspond. That is, the premise for comparing the number of outputs is that the output positions correspond correctly. Assuming that the expected outputs for the high-voltage side are outputs 1 and 3, the activation status of outputs 1 and 3 of the actual high-voltage side outputs is counted to determine the actual number of outputs.

[0040] S104. For each trip output matrix bit obtained from S103, the action value is either 1 or 0. The actual trip matrix action value is calculated. Based on the setting value and data type of the intelligent substation transformer protection trip output matrix obtained from S01, the trip output matrix action value is compared with the setting value to determine if the trip output matrix has acted correctly. For example, if the trip output matrix setting value for high phase-to-phase impedance protection is 0003 (data type: hexadecimal), and the calculated actual trip matrix action value is also 0003 (data type: hexadecimal), then the high phase-to-phase impedance protection trip output matrix has acted correctly. If the calculated actual trip matrix action value is not 0003 (data type: hexadecimal), then the high phase-to-phase impedance protection trip output matrix has acted incorrectly. The determination of whether the trip output matrix action is correct is only performed during the trip output action of the intelligent substation transformer protection device to avoid misjudgment of the trip output matrix action.

[0041] This invention provides a method for detecting the output matrix of a transformer protection device in an intelligent substation. The method involves obtaining the setpoint of the trip output matrix of the intelligent substation transformer protection device; calculating the number of outputs for each trip output matrix bit of the intelligent substation transformer protection device; simulating a disturbance in the power grid system, where a certain protection action of the intelligent substation transformer device drives the output to trip; detecting the output status of the intelligent substation transformer protection device; and judging the correctness of the action of each trip output matrix bit based on the number of outputs for each trip output matrix bit. This method facilitates obtaining the correctness of each trip output matrix bit and also facilitates obtaining the actual action time and action value of each trip GOOSE output. When the action value is incorrect, the problem can be quickly located and analyzed. Finally, the method calculates the trip output matrix action value based on whether each trip output matrix bit has been activated, compares it with the protection trip output matrix setpoint, and determines whether the trip output matrix has acted correctly. The entire process of this invention can detect the trip output matrix of the intelligent substation transformer protection device without the need for a dedicated testing instrument, and the entire process does not require manual judgment, avoiding possible misjudgment by humans. At the same time, this invention can accurately determine whether the trip output matrix is ​​operating correctly by using the expected number of outputs, the actual output situation, and the setting value. It can also save time and labor costs.

[0042] An implementation method for an intelligent substation transformer protection device output matrix detection system: The present invention provides an intelligent substation transformer protection device output matrix detection system, such as... Figure 2 As shown, it specifically includes a memory, a processor, a system bus, and a computer program stored in the memory. The processor and the memory communicate and interact with each other via the system bus. The processor executes the computer program to implement the steps of the intelligent substation transformer protection device output matrix detection method of the present invention. The processor can be a microprocessor (MCU) or other processing device; the memory can be any type of memory that stores information using electrical energy, such as non-volatile storage media (including computer programs, databases), or other types of memory.

[0043] The detection system of this invention serves as a communication client to access the station control layer and process layer communication network of the intelligent substation transformer protection device, thereby obtaining the trip output matrix setting values ​​and data types of the intelligent substation transformer protection device, and detecting the trip output status of the intelligent substation transformer protection device. Alternatively, the trip output matrix setting values ​​and data types of the intelligent substation transformer protection device can be directly input into the detection system.

[0044] The detection method for the output matrix of the intelligent substation transformer protection device implemented by the detection system of the present invention can be referred to the foregoing relevant descriptions, and will not be repeated here.

Claims

1. A method for detecting the output matrix of a smart substation transformer protection device, characterized in that, The method includes the following steps: 1) Obtain the trip output matrix setting values ​​of the intelligent substation transformer protection device; 2) Determine the expected number of outputs for each trip output matrix bit of the transformer protection device in the intelligent substation based on the SCD file of the intelligent substation; 3) Simulate disturbances in the power grid system, detect the actual tripping output of the intelligent substation transformer protection device, and compare it with the expected number of outputs of the corresponding tripping output matrix bit to obtain the action value of each tripping output matrix bit; 4) Calculate the actual operating value of the trip output matrix under the protection action based on the operating value of each trip output matrix bit under the protection action, and compare the actual operating value of the trip output matrix with the corresponding trip output matrix setting value. If the two are consistent, it means that the protection action output matrix is ​​operating correctly; otherwise, it means that the protection action output matrix is ​​operating incorrectly.

2. The intelligent substation transformer protection device output matrix detection method according to claim 1, characterized in that, The determination of the expected number of outputs for each trip output matrix bit includes: receiving the virtual terminal connection of the GOOSE trip output of the transformer protection device by parsing the intelligent station SCD file, setting the trip output matrix bit corresponding to the GOOSE trip output of the virtual terminal connection, and calculating the expected number of outputs for each trip output matrix bit of the intelligent station transformer protection device.

3. The intelligent substation transformer protection device output matrix detection method according to claim 1, characterized in that, The process of determining the action value of each trip output matrix bit includes: When the expected number of trip outputs in the trip output matrix bit is greater than 0 and equal to the actual number of trip outputs in the trip output matrix bit, the trip output matrix bit is judged to have acted correctly; when the expected number of trip outputs in the trip output matrix bit is greater than 0 and not equal to the actual number of trip outputs in the trip output matrix bit, the trip output matrix bit is judged to have acted incorrectly.

4. The intelligent substation transformer protection device output matrix detection method according to claim 3, characterized in that, When the trip output matrix bit is determined to be operating correctly, the operation flag value of the trip output matrix bit is set to 1. When the trip output matrix bit is determined to be operating incorrectly, the operation flag value of the trip output matrix bit is set to 0. The actual operation value of the trip output matrix is ​​calculated based on the operation flag values ​​of each trip output matrix bit.

5. The method for detecting the output matrix of the intelligent substation transformer protection device according to claim 1, characterized in that, When comparing the actual action value of the trip output matrix with the corresponding set value of the trip output matrix, the data type of the actual action value of the trip output matrix is ​​converted to the same type as the set value of the trip output matrix.

6. The method for detecting the output matrix of the intelligent substation transformer protection device according to claim 1, characterized in that, The determination of whether the protection action output matrix is ​​operating correctly is completed during the trip output action of the intelligent substation transformer protection device.

7. The intelligent substation transformer protection device output matrix detection method according to claim 1, characterized in that, The trip output matrix setting value is obtained from the intelligent substation transformer protection device through the MMS communication protocol or the IEC103 communication protocol.

8. A detection system for the output matrix of a smart substation transformer protection device, comprising a processor, characterized in that, The processor executes a computer program to implement the steps of the intelligent substation transformer protection device output matrix detection method according to any one of claims 1 to 7.

9. The intelligent substation transformer protection device output matrix detection system according to claim 8, characterized in that, The processor acts as a communication client to communicate with the station control layer of the intelligent substation transformer protection device in order to obtain the trip output matrix setting value of the intelligent substation transformer protection device.

10. The intelligent substation transformer protection device output matrix detection system according to claim 8, characterized in that, The processor is used to communicate with the station control layer and process layer of the intelligent substation transformer protection device to detect the actual tripping output of the protection action of the intelligent substation transformer protection device.

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