High-reliability automatic inspection system and method for relay protection device of transformer substation

Abstract

The invention provides a high-reliability automatic inspection method for a relay protection device of a transformer substation. The method comprises the following steps of: 1, analyzing a field station SCD file and a fixed value list issued by scheduling to obtain configuration data of a relay protection device to be inspected; step 2, inputting the analyzed data into a decision model; 3, indexing to corresponding model mapping information through a template decision algorithm, and automatically calling a corresponding test model; 4, according to the content of the test model, testable information of the relay protection device to be tested in the step 1 is called through the CMS client, and 5, the test model is automatically filled with the collected testable information, and test case instantiation for a specific device is automatically completed; step 6, according to the instantiated test case, executing an automatic command for testing, and judging a test result; the CMS protocol can be supported, decoupling with a relay protection manufacturer is achieved, a test case does not need to be manually configured, and a real fixed value is used for testing.

Description

Technical Field

[0001] The present invention relates to the technical field of power system relay protection, and in particular to a high-reliability transformer substation relay protection device automatic inspection system and method. Background Art

[0002] Grid security is an important part of national security, and relay protection devices are an important support for ensuring grid security. Therefore, the reliability of relay protection devices is particularly important, and detailed and accurate tests must be carried out before they are officially put into operation on site. Due to the wide variety of relay protection devices and the complexity and diversity of their protection functions, manual function testing one by one faces the problem of being cumbersome and error-prone. Therefore, various manufacturers have launched a series of automatic testing technologies to improve the degree of automation of on-site testing of relay protection devices.

[0003] Traditional relay protection devices communicate based on the IEC61850 protocol, which is complex, has low communication efficiency, is not a national standard, does not meet the requirements of autonomous control, and has potential safety hazards. To solve this problem, the State Grid has begun to vigorously promote the construction of a new generation of high-reliability substations and use a new generation of high-reliability relay protection devices. The CMS protocol was introduced to replace the previous IEC61850 protocol to ensure autonomous control.

[0004] The new generation of high-reliability relay protection devices use the CMS protocol for communication, which leads to the serious problem that the automatic inspection system of relay protection devices based on the IEC61850 protocol in the past cannot communicate with the device under test. In addition, the automatic inspection system in the past also has the problem of being unable to decouple from the equipment manufacturer, requiring manual configuration of test cases, and manually associating SV or GOOSE information, which is not conducive to the automation of the entire test process.

[0005] To solve this series of problems, the present invention proposes a new generation of high-reliability substation relay protection device automatic detection system and method, which supports the CMS protocol, and the test model is decoupled from the relay protection manufacturer. There is no need to manually configure test cases, and real constants are used for testing. It can effectively ensure the safety, reliability and efficiency of automatic detection of relay protection devices in the new generation of high-reliability substations. Summary of the invention

[0006] The present invention proposes a high-reliability substation relay protection device automatic inspection system and method, which can support the CMS protocol, and the test model is decoupled from the relay protection manufacturer. There is no need to manually configure test cases, and real constants are used for testing. The system and method can effectively ensure the safety, reliability and efficiency of automatic detection of relay protection devices in a new generation of high-reliability substations.

[0007] The present invention adopts the following technical solutions.

[0008] A method for automatically testing a highly reliable substation relay protection device, which can test a new generation of highly reliable relay protection devices that communicate using the CMS protocol. The method includes the following steps; Step 1: First, parse the substation site's SCD file and the setting list issued by the dispatching department to obtain the configuration data of each relay protection device to be tested that communicates using the CMS protocol in the substation; Step 2: Input the parsed data into the intelligent test case template decision model; Step 3: Through the template decision algorithm based on protection settings, intelligently index the corresponding model mapping information according to the information in the template decision model, and automatically retrieve the corresponding test model; Step 4: According to the content of the test model, summon the testable information of the relay protection device in Step 1 to be tested through the CMS client; Step 5: Automatically fill the collected testable information into the test model to automatically complete the instantiation of the test case for the specific device; Step 6: According to the instantiated test case, communicate with the relay protection device to be tested and the tester through the CMS client, execute the automation command for testing, and determine the test result.

[0009] In Step 1, the configuration data includes IEDname, types of protection settings, names of protection settings, data sets of each device, and the association relationship between devices, which are used as the input information for the template decision model algorithm in the subsequent steps and participate in the subsequent operations.

[0010] In Step 2, the intelligent test case template decision model is based on a test case description file configured by means of configuration, using the standard xml format, which meets the test requirements of the national grid enterprise standards of "QGDW 10766—2024 Standardized Design Specification for 10kV~110(66)kV Line Protection and Auxiliary Devices", "Q / GDW 10766—2015 Standardized Design Specification for 10kV~110(66)kV Element Protection and Auxiliary Devices", "Q / GDW1810-2012 Specification for Inspection and Testing of Relay Protection in Smart Substations", and "General Series Specification 8 Information Model of Substation Equipment for the Autonomous and Controllable New Generation Substation Secondary System". Index and make comprehensive decisions according to the flag bits and test items of the national grid specifications; As Figure 2 shown, in Step 2, the template decision algorithm based on protection settings in the substation system host computer is automatically used to perform operations on the setting data of the various data obtained in Step 1; The specific basis of the intelligent test case template decision algorithm is, for example, whether there is specific fixed value characteristic information, whether the fixed value size is within the specified interval boundary range, whether there is a specified fixed value combination, and whether each fixed value satisfies a series of conditions of a specific logical operation relationship. The decision algorithm calls the test model for the specific device according to the operation result. The test model includes all the protection function information that needs to be tested for the device under test, including overcurrent protection, differential protection, and distance protection; The uninstantiated content in the test model is reflected in the test model in the form of special flags. The uninstantiated content includes SV, GOOSE data source, and tester output file.

[0011] In step three, it is only necessary to obtain the set value information and other contents in the relay protection devices of each manufacturer that comply with the national grid specifications, without relying on the specific logical judgment information of each device, so as to achieve the decoupling of the test model and the manufacturer.

[0012] In step three, the test model is parsed to determine the content that needs to be instantiated in the test model; in this process, it is checked whether each data part in the test model has a special flag bit and the specific value of the flag bit; The selection and judgment of the flag position shall refer to the State Grid specifications, such as "110(66)kV line protection action information is shown in the table"; The flag bit is used to indicate whether the part needs to be instantiated and the source of the content that needs to be instantiated. Based on the presence or absence of the flag bit and the specific value of the flag bit, the program automatically determines whether the data needs to be instantiated and what data (such as fixed value data, pressure plate data) needs to be used for instantiation; The flag is part of the test model and is determined when the decision algorithm calls the test model. The flag is judged to accurately determine which content in the test model needs to be instantiated, and the judgment process is fully automatic through the software.

[0013] In step 4, the testable information includes protection setting information, soft / hard pressure plate status information, device sampling value, SV data source, and GOOSE data source; this step obtains the actual protection setting used on-site by the relay protection device to be tested.

[0014] Step 5: If Figure 3 As shown, according to the information obtained in step 4, the test model retrieved in step 2 is instantiated, specifically: according to the size of the set value in the device, the tester file is generated; according to the fixed value input situation, the boundary conditions of the returned results are determined; and the relevant SV and GOOSE associations are completed; In step 5, the instantiation content includes: instantiating each protection function test case of the new generation of high-reliability relay protection device to be tested (such as line protection, distance protection, etc.); instantiating the test files for communicating with the testers in the system (for testers from different manufacturers, different test files are instantiated to avoid affecting the overall inspection system when replacing the testers).

[0015] In step 6, the automation commands include: interacting with the tester, such as controlling the tester to output specified analog or digital quantities; receiving the messages returned by the tester and obtaining test result information by parsing the message content; interacting with the device to be tested, such as reading the real-time sampling values of the device to be tested; backhauling the protection outlet status of the device to be tested; communicating with the merging unit and intelligent terminal associated with the device to be tested in the substation yard to control the output of SV and GOOSE, etc. The communication process is based on the CMS protocol and can adapt to the new generation of high-reliability relay protection devices.

[0016] In step 6, according to the logical rules recorded in the test case and combining the message information retrieved from the tester, the device to be tested, etc., judge the test result of this function test; then repeat steps 1 to 5 according to the test case until all protection function tests of the device to be tested are completed. After that, the inspection system automatically summarizes and generates a test report based on the model information of the device to be tested and the test results of each item.

[0017] The automatic inspection system for high-reliability substation relay protection devices. The CMS client adopted by the system is a host computer software that uses the communication message specification of the substation secondary system (abbreviated as the CMS protocol) as the underlying communication protocol. This software establishes a basic communication connection with the device under test based on the associated negotiation service (AssociateNegotiate) and the association service (Assocaite) of the CMS protocol. The relevant specifications are formulated by the State Grid to ensure the accuracy, reliability, and independent controllability of the communication process. After the CMS client establishes a communication connection, it obtains the setting information required for each protection function through the read and edit setting group service (GetSGCBValues) in the setting group service. The setting information includes the specific values of each setting; it obtains the input status of each pressure plate through the read data value service (GetDataValues); this step is used to obtain some of the information required for test model instantiation and is automatically controlled and executed by the software.

[0018] The present invention has the following advantages: 1 - An automated inspection system based on the CMS protocol: The inspection system communicates with the device under test, other related devices (such as the merging unit and intelligent terminal associated with the device under test), and the tester through the CMS protocol, solving the problems that the automatic inspection system based on IEC61850 cannot communicate with the new generation of highly reliable relay protection devices and cannot obtain key information such as device settings, sampled values, and protection status.

[0019] 2 - It has a template decision algorithm based on protection settings, realizing the decoupling of the test model from relay protection device manufacturers.

[0020] 3 - It has an automatic instantiation and configuration technology for test cases, solving the problem of manually mapping SV, GOOSE, or other information in the past.

[0021] 4 - It can use the actual on-site protection settings for testing, improving the accuracy and reliability of testing.

[0022] Compared with the existing methods, the beneficial effects of the present invention also lie in: 1 - It fully supports the new generation of highly reliable relay protection devices. The inspection system communicates with each device through the CMS protocol, meeting the requirements of the new generation of highly reliable substations and being able to achieve independent control. It changes the problem that the past inspection system could only communicate through IEC61850 and could not interact with the devices in the new generation of highly reliable substations.

[0023] 2 - Through the template decision algorithm based on protection settings, using the template decision model, according to information such as the settings of the device under test, the test model is intelligently determined, and there is no longer a need to manually configure the test model according to the processing logic of each manufacturer's device or other differences, realizing the decoupling of the establishment of the test model from the manufacturer.

[0024] 3 - Automatic instantiation of the test model. After the test model is called in the previous steps, according to the content of the test model, various data sources required for the test process are determined through the decision model, and communication is carried out with relevant devices (the device under test, the merging unit and intelligent terminal associated with the device under test, etc.) through the CMS protocol, obtaining data content such as SV or GOOSE required for the device under test from the relevant devices, avoiding the need for manual mapping steps and improving the automation level and test reliability.

[0025] 4 - The inspection system conducts tests based on the actual settings read from on-site devices. In the existing methods, to ensure the compatibility of test cases, the settings information of the device under test is often modified during the execution of test cases for testing, resulting in the risk of incomplete testing. This patent realizes automatic testing based on actual settings by first reading the actual protection setting information in the device under test and then instantiating the test model, thus ensuring the accuracy of test results.

[0026] The automatic detection system and method for the new generation of highly reliable substation relay protection devices proposed by the present invention support the CMS protocol. The test model is decoupled from relay protection manufacturers, eliminating the need for manual configuration of test cases. Tests are conducted using real settings, effectively ensuring the safety, reliability, and efficiency of the automatic detection of relay protection devices in the new generation of highly reliable substations.

[0027] The automatic detection system and method for the new generation of highly reliable substation relay protection devices proposed by the present invention fully support the new generation of highly reliable relay protection devices. There is no longer a need to manually configure test models according to the processing logics or other differences of equipment from various manufacturers, achieving the decoupling of test model establishment and manufacturers. The test model is automatically instantiated, eliminating the need for manual mapping steps, improving the degree of automation and test reliability. The inspection system conducts tests based on the real settings read from on-site devices, realizing automated testing based on real settings, thereby ensuring the accuracy of test results. Brief Description of the Drawings

[0028] The following further details the present invention in conjunction with the drawings and specific embodiments: Attached Figure 1 is a schematic diagram of the operation process of the automatic detection system of the present invention; Attached Figure 2 is a schematic diagram of the test model call process; Attached Figure 3 is a schematic diagram of the test case instantiation process. Specific Embodiments

[0029] The principles and features of the present invention are described below in conjunction with the drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0030] As shown in the figure, an automatic inspection method for relay protection devices in a highly reliable substation can conduct inspection tests on the new generation of highly reliable relay protection devices that communicate using the CMS protocol. The method includes the following steps; Step 1: First, parse the substation site SCD file on-site at the substation and the setting list issued by the dispatching, and obtain the configuration data of each relay protection device to be inspected that communicates using the CMS protocol within the substation; Step 2: Input the parsed data into the intelligent test case template decision model; Step 3: Through the template decision algorithm based on protection settings, intelligently index the corresponding model mapping information according to the information in the template decision model, and automatically retrieve the corresponding test model; Step 4: According to the content of the test model, summon the testable information of the relay protection device in Step 1 to be tested through the CMS client, Step 5: Automatically fill the collected testable information into the test model to automatically complete the instantiation of test cases for specific devices. Step 6: According to the instantiated test cases, communicate with the relay protection device to be inspected and the tester through the CMS client, execute automated commands for testing, and determine the test results.

[0031] In Step 1, the configuration data includes IEDname, protection setting types, protection setting names, datasets of each device, and the association relationships between devices, which serve as the input information for the template decision model algorithm in subsequent steps and participate in subsequent operations.

[0032] In Step 2, the intelligent test case template decision model is based on the test case description file configured by means of configuration, which adopts the standard xml format and meets the test requirements of the State Grid enterprise standards of "QGDW 10766—2024 Standardized Design Specification for 10kV~110(66)kV Line Protection and Auxiliary Devices", "Q / GDW 10766—2015 Standardized Design Specification for 10kV~110(66)kV Element Protection and Auxiliary Devices", "Q / GDW1810-2012 Specification for Inspection and Testing of Relay Protection in Smart Substations", and "Technical Specification for the New Generation of Autonomous and Controllable Substation Secondary Systems General Series Specification 8 Substation Equipment Information Model". Indexing and comprehensive decision-making are carried out according to the flag bits and test items specified in the State Grid specifications. As Figure 2 shown, in Step 2, the template decision algorithm based on protection settings in the upper computer of the substation system is automatically inspected to perform operations on the setting data of the various data obtained in Step 1. Specifically, the intelligent test case template decision algorithm is based on a series of conditions such as whether there are specific setting characteristic information, whether the setting values are within the specified interval boundaries, whether there are specified setting combinations, and whether each setting value satisfies specific logical operation relationships. The decision algorithm calls the test model for specific devices according to the operation results. All the protection function information required for testing the device to be tested is included in this test model, including overcurrent protection, differential protection, and distance protection. The un-instantiated content in the test model is reflected in the test model in the form of special flag bits. The un-instantiated content includes SV, GOOSE data sources, and tester output files.

[0033] In Step 3, only the setting information and other content that meet the State Grid specifications in the relay protection devices of each manufacturer need to be obtained, without relying on the specific logical judgment information of each device, so as to achieve the decoupling of the test model from the manufacturer.

[0034] In step three, the test model is parsed to determine the content that needs to be instantiated in the test model; in this process, it is checked whether each data part in the test model has a special flag bit and the specific value of the flag bit; The selection and judgment of the flag position shall refer to the State Grid specifications, such as "110(66)kV line protection action information is shown in the table"; The flag bit is used to indicate whether the part needs to be instantiated and the source of the content that needs to be instantiated. Based on the presence or absence of the flag bit and the specific value of the flag bit, the program automatically determines whether the data needs to be instantiated and what data (such as fixed value data, pressure plate data) needs to be used for instantiation; The flag is part of the test model and is determined when the decision algorithm calls the test model. The flag is judged to accurately determine which content in the test model needs to be instantiated, and the judgment process is fully automatic through the software.

[0035] In step 4, the testable information includes protection setting information, soft / hard pressure plate status information, device sampling value, SV data source, and GOOSE data source; this step obtains the actual protection setting used on-site by the relay protection device to be tested.

[0036] Step 5: If Figure 3 As shown, according to the information obtained in step 4, the test model retrieved in step 2 is instantiated, specifically: according to the size of the set value in the device, the tester file is generated; according to the fixed value input situation, the boundary conditions of the returned results are determined; and the relevant SV and GOOSE associations are completed; In step five, the instantiation contents include: the instantiation of test cases for each protection function of the new generation of high-reliability relay protection devices to be tested (such as line protection, distance protection, etc.); the instantiation of test files for communicating with the testers in the system (for testers from different manufacturers, different test files are instantiated to avoid the impact of changing the tester on the overall inspection system).

[0037] In step six, the automation commands include: interacting with the tester, such as controlling the tester to output a specified analog or digital quantity; receiving the tester's return message and parsing the message content or test results; interacting with the device under test, such as reading the real-time sampling value of the device under test; retrieving the protection exit status of the device under test; communicating with the merging unit and intelligent terminal associated with the device under test in the station, controlling SV and GOOSE output, etc. The communication process is based on the CMS protocol and can adapt to the new generation of high-reliability relay protection devices.

[0038] In Step 6, according to the logic rules recorded in the test cases and combined with the message information retrieved from the tester, the device under test, etc., determine the test results of this function test; then repeat Steps 1 to 5 according to the test cases until all protection function tests of the device under test are completed. After that, the inspection system automatically summarizes and generates a test report based on the model information of the device under test and the results of each test.

[0039] For the high-reliability substation relay protection device automatic inspection system, the CMS client adopted by the system is a host computer software that uses the Communication Message Specification for Substation Secondary Systems (abbreviated as CMS protocol) as the underlying communication protocol. This software establishes a basic communication connection with the device under test based on the Associate Negotiate and Associate services of the CMS protocol. The relevant specifications are formulated by the State Grid to ensure the accuracy, reliability, and autonomy of the communication process. After the CMS client establishes a communication connection, it obtains the setting information required for each protection function through the GetSGCBValues service in the setting group service. The setting information includes the specific values of each setting; it obtains the input status of each pressure plate through the GetDataValues service. This step is used to obtain some information required for test model instantiation and is automatically controlled and executed by the software.

[0040] Embodiment: The technical problem to be solved in this example is to provide a new generation of high-reliability substation relay protection device automatic inspection system and method. Through the CMS protocol, information is exchanged with each relevant device, and a template decision algorithm based on protection settings is used to automatically call the test model, decoupling from relay protection equipment manufacturers. The real settings of the new generation of high-reliability devices under test read through the CMS protocol are used to instantiate the test model to obtain test cases. Finally, by executing the test cases, each relevant device is controlled, test information is retrieved, test results are obtained, and a test report is generated. Except for the parts specifically stated, the entire process is automatically controlled by software and does not require human participation.

[0041] The specific implementation steps are as follows: Step 1: Parse the substation SCD file through the CMS client. In this step, for a specific SCD file, the types, quantities, and relevant information of the devices in this new generation of high-reliability substation can be parsed, including but not limited to IEDname, each device's data set (settings, pressure plates, etc.), and the association relationship between devices. This information will be used as the input information for the subsequent template decision algorithm and participate in subsequent operations.

[0042] Step 2: As Figure 2As shown, the data obtained in step one, mainly the fixed value data, are calculated through the template decision algorithm based on the protection fixed value in the upper computer of the automatic inspection system. The specific basis of the template decision algorithm is, for example, whether there is specific fixed value characteristic information, whether the fixed value size is within the specified interval boundary range, whether there is a specified fixed value combination, whether each fixed value satisfies a specific logical operation relationship and a series of other conditions. The decision algorithm calls the test model for the specific device according to the calculation result. The test model includes all the protection function information that needs to be tested for the device under test, such as overcurrent protection, differential protection, distance protection, etc. There are a lot of uninstantiated contents in the test model, such as SV, GOOSE data source; tester output file, etc. These uninstantiated contents will be reflected in the test model in the form of special flags.

[0043] The model is not a deep learning model, but a test case description file based on configuration. It uses the standard XML format and can meet the test requirements of State Grid's "QGDW 10766-2024 10kV~110 (66) kV Line Protection and Auxiliary Device Standardized Design Specifications", "Q / GDW 10766-2015 10kV~110 (66) kV Component Protection and Auxiliary Device Standardized Design Specifications", "Q / GDW1810-2012 Intelligent Substation Relay Protection Inspection and Testing Specifications", "Autonomous and Controllable New Generation Substation Secondary System Technical Specifications General Series Specifications 8 Substation Equipment Information Model" and other State Grid enterprise standards, and index and make comprehensive decisions according to the flags and test items of the State Grid specifications.

[0044] Step 3: parse the test model to determine the content that needs to be instantiated in the test model. In this process, it will be checked whether there are special flags and specific values ​​of the flags in each data part of the test model.

[0045] The selection and judgment of the flag position can refer to the State Grid specifications, such as "See the table for 110(66)kV line protection action information".

[0046] These flags are used to indicate whether the part needs to be instantiated and the source of the content that needs to be instantiated. According to the presence or absence of the flag and the specific value of the flag, the program automatically determines whether the data needs to be instantiated, what data (such as fixed value data, pressure plate data) needs to be used for instantiation, etc. These flags are part of the test model and have been determined when the decision algorithm calls the test model. By judging the situation of the flag, it is possible to accurately determine which content in the test model needs to be instantiated. The judgment process is fully automatic by the software and does not require human participation.

[0047] Step 4: Communicate with the new generation of highly reliable relay protection device to be tested and other devices associated with it through the CMS client to obtain setting information, the switching status of pressure plates, etc. The CMS client is an upper computer software that uses the communication message specification of the secondary substation system (referred to as the CMS protocol) as the underlying communication protocol. This software establishes a basic communication connection with the device under test based on the Associate Negotiate and Associate services of the CMS protocol. The relevant specifications are formulated by the State Grid, which can ensure the accuracy, reliability, and autonomy of the communication process. After establishing the communication connection, obtain the setting information required for each protection function, including the specific values of each setting, etc., through the GetSGCBValues service in the setting group service; obtain the switching status of each pressure plate through the GetDataValues service. This step is used to obtain some of the information required for test model instantiation and is automatically controlled by the software without human participation.

[0048] Step 5: As Figure 3 shown, instantiate the test model retrieved in Step 2 according to the information obtained in Step 4. Specifically, it is manifested as: generating a tester file according to the setting values in the device; determining the boundary conditions of the return result according to the switching status of the settings; completing relevant SV, GOOSE association, etc.

[0049] Step 6: Execute the test cases. According to the content of the test cases, establish connections and communicate with the device under test, the tester, etc. through the CMS client, including but not limited to: outputting specified analog / digital quantities, retrieving action information, receiving return messages, etc.

[0050] Step 7: Determine the test results according to the boundary conditions of each test result in the test cases and the retrieved information of the inspection system.

[0051] Step 8: Generate a test report according to the test results. The report supports multiple formats for users to choose from.

[0052] The above is only the basic process of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-reliability substation relay protection device automatic inspection method, which can inspect and test a new generation of high-reliability relay protection devices that use CMS protocol for communication, and is characterized by: The method comprises the following steps: Step 1: First, parse the substation site SCD file and the set value list issued by the dispatcher to obtain the configuration data of each relay protection device to be tested in the substation that uses the CMS protocol for communication; Step 2: Input the parsed data into the intelligent test case template decision model; Step 3: Through the template decision algorithm based on the protection constant value, the information in the template decision model is intelligently indexed to the corresponding model mapping information, and the corresponding test model is automatically retrieved; Step 4: According to the test model content, call the testable information of the relay protection device in step 1 through the CMS client. Step 5: Automatically fill the collected testable information into the test model, and automatically complete the instantiation of test cases for specific devices; Step 6: According to the instantiated test case, the CMS client communicates with the relay protection device to be tested and the tester, executes the automated command to perform the test, and determines the test result.

2. The high-reliability substation relay protection device automatic inspection method according to claim 1 is characterized by: In step 1, the configuration data includes IEDname, protection setting type, protection setting name, data sets of each device, and the relationship between devices, which serves as input information of the template decision model algorithm in the subsequent steps and participates in subsequent operations.

3. The high-reliability substation relay protection device automatic inspection method according to claim 1, characterized in that: In step 2, the intelligent test case template decision model is based on the test case description file of the configuration configuration, which adopts the standard XML format, and meets the test requirements of the State Grid's enterprise standards such as "QGDW 10766-2024 10kV~110 (66) kV Line Protection and Auxiliary Device Standardized Design Specification", "Q / GDW 10766-2015 10kV~110 (66) kV Component Protection and Auxiliary Device Standardized Design Specification", "Q / GDW 1810-2012 Intelligent Substation Relay Protection Inspection and Testing Specification", and "Autonomous and Controllable New Generation Substation Secondary System Technical Specification General Series Specification 8 Substation Equipment Information Model", and is indexed and comprehensively decided according to the flag position and test items of the State Grid specifications; Step 2: automatically checking the template decision algorithm based on the protection setting in the upper computer of the substation system, and calculating the setting data of each data obtained in step 1; The specific basis of the intelligent test case template decision algorithm is: whether it has specific fixed value feature information, whether the fixed value size is within the specified interval boundary range, whether it has a specified fixed value combination, and whether each fixed value satisfies a series of conditions of a specific logical operation relationship. The decision algorithm calls the test model for the specific device according to the calculation result. The test model includes all the protection function information that needs to be tested for the device under test, including overcurrent protection, differential protection, and distance protection; The uninstantiated content in the test model is reflected in the test model in the form of special flags. The uninstantiated content includes SV, GOOSE data source, and tester output file.

4. The method for automatically checking a high-reliability substation relay protection device according to claim 1 is characterized in that: In step three, it is only necessary to obtain the set value information content in the relay protection devices of each manufacturer that complies with the national grid specifications, without relying on the specific logical judgment information of each device, so as to achieve decoupling of the test model and the manufacturer.

5. The high-reliability substation relay protection device automatic inspection method according to claim 1 is characterized by: In step three, the test model is parsed to determine the content that needs to be instantiated in the test model; in this process, it is checked whether each data part in the test model has a special flag bit and the specific value of the flag bit; The selection and judgment of the flag position shall be carried out in accordance with the State Grid specifications; The flag bit is used to indicate whether the part needs to be instantiated and the source of the content that needs to be instantiated; according to the presence or absence of the flag bit and the specific value of the flag bit, the program automatically determines whether the data needs to be instantiated and what data needs to be used for instantiation; The flag is part of the test model and is determined when the decision algorithm calls the test model. The flag is judged to accurately determine which content in the test model needs to be instantiated, and the judgment process is fully automatic through the software.

6. The high-reliability substation relay protection device automatic inspection method according to claim 1 is characterized by: In step 4, the testable information includes protection setting information, soft / hard pressure plate status information, device sampling value, SV data source, and GOOSE data source; this step obtains the actual protection setting used on-site by the relay protection device to be tested.

7. The high-reliability substation relay protection device automatic inspection method according to claim 1 is characterized by: Step 5: Instantiate the test model retrieved in step 2 according to the information obtained in step 4, specifically: generate a tester file according to the size of the internal value of the device; Determine the boundary conditions of the returned results based on the fixed value input; Complete the relevant SV and GOOSE associations; In step five, the instantiation contents include: the instantiation of each protection function test case of the new generation high-reliability relay protection device to be tested, and the instantiation of the test file for communicating with the tester in the system.

8. The high-reliability substation relay protection device automatic inspection method according to claim 1 is characterized by: In step six, the automation commands include: interacting with the tester; receiving the message returned by the tester and parsing the message content or test result information; interacting with the device under test; retrieving the protection exit status of the device under test; communicating with the merging unit and intelligent terminal associated with the device under test in the station to control SV and GOOSE outputs. The communication process is based on the CMS protocol to adapt to the relay protection device.

9. The high-reliability substation relay protection device automatic inspection method according to claim 1 is characterized by: In step six, the test result of this functional test is determined according to the logical rules recorded in the test case and the message information collected from the tester and the device under test. Then, steps one to five are repeated according to the test case until all protection function tests of the device under test are completed. The inspection system then automatically generates a test report based on the model information of the device under test and the test results.

10. High reliability substation relay protection device automatic inspection system, characterized by: The CMS client used in the system is a host computer software that uses the substation secondary system communication message specification as the underlying communication protocol. The software establishes a basic communication connection with the device under test based on the associated negotiation service and associated service of the CMS protocol. The relevant specifications are formulated by the State Grid to ensure that the communication process is accurate, reliable, and autonomously controllable; After the CMS client establishes a communication connection, it obtains the constant value information required for each protection function through the read and edit constant value group service in the constant value group service. The constant value information includes the specific numerical value of each constant; the input status of each pressure plate is obtained through the read data value service; this step is used to obtain some information required for the instantiation of the test model, and is automatically controlled and executed by the software.

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