A substation panelboard testing system, method and apparatus

Abstract

The application discloses a transformer substation screen cabinet testing system, method and device, and the system comprises a testing device, a standard plug and a distributed tester; the testing device is connected with the standard plug; the testing device is wirelessly connected with the distributed tester; the standard plug is connected with a first testing plug of a main screen cabinet; the distributed tester is connected with a second testing plug of an associated screen cabinet; the testing device is used for sending an excitation signal to the main screen cabinet through the standard plug; the standard plug is used for transmitting an analog signal, a digital signal and a network load, and receiving a first feedback signal of the main screen cabinet; and the distributed tester is used for applying a first excitation signal to the associated screen cabinet through the second testing plug after receiving the first trigger signal, and receiving a second feedback signal of the associated screen cabinet. According to the embodiment of the application, the main screen cabinet and the associated screen cabinet are simultaneously tested through the standard plug and the distributed tester, and the operation process of the testing is simplified.

Description

Technical Field

[0001] This invention relates to the field of intelligent substation technology, and in particular to a substation cabinet testing system, method and apparatus. Background Technology

[0002] The commissioning of secondary equipment in substations mainly focuses on various devices and the circuits between them. The smallest unit of commissioning is generally secondary devices such as relay protection, measurement and control devices, intelligent terminals, and merging units. Functional, configuration, and circuit tests are carried out on the secondary equipment. Generally, testing different items such as the function, configuration, and circuit of secondary equipment often requires the use of multiple testing instruments, different test wiring, and different test methods to complete the test tasks sequentially. The aforementioned problems result in complex, tedious, and inefficient commissioning of substation secondary equipment. When conducting tests on different devices within a single cabinet, it is necessary to frequently change testers and disconnect wires. After completing the tests, a considerable amount of time is required for recovery work. For example, conducting a simple relay protection sampling accuracy test requires disconnecting the current terminal block and short-circuiting the external circuit, disconnecting the voltage terminal block and isolating the external circuit, and then connecting the current and voltage wires of the relay protection tester. When the tested object is a protection device with multiple sampling circuits, such as a bus differential or main transformer, it is also necessary to disconnect, short-circuit, and isolate the AC cables of each circuit sequentially. The entire process takes a lot of time. In particular, extra care is required for the maintenance of operating equipment to prevent accidental contact, incorrect wiring, or accidental disconnection. Summary of the Invention

[0003] This invention provides a substation cabinet testing system, method, and apparatus to solve the technical problem of cumbersome operation process when testing multiple substation cabinets in the prior art.

[0004] To address the aforementioned technical problems, embodiments of the present invention provide a substation cabinet testing system, comprising: testing equipment, standard aviation connectors, and a distributed testing instrument;

[0005] The test equipment is connected to the standard air connector; the test equipment is wirelessly connected to the distributed tester; the standard air connector is connected to the first test air connector of the main cabinet; the distributed tester is connected to the second test air connector of the associated cabinet; the main cabinet and the associated cabinet are connected by a loop to form a bus differential protection cabinet.

[0006] The testing equipment is used to send analog signals to the main display cabinet via the standard air connector; to simulate process layer equipment and send equipment analog signals to the main display cabinet via the standard air connector; to send network load to the main display cabinet via the standard air connector; and to send a first trigger signal to the distributed tester via wireless communication.

[0007] The standard aviation connector is used to transmit analog signals, equipment analog signals, and network load; and to receive the first feedback signal from the main display cabinet.

[0008] The distributed tester is used to apply a first excitation signal to the associated cabinet through the second test socket after receiving a first trigger signal; and to receive a second feedback signal from the associated cabinet.

[0009] This invention connects the main cabinet to a test connector via a standard connector, and completes the test by applying excitation to the main cabinet. Furthermore, a distributed tester applies excitation to associated cabinets via their test connectors, enabling testing of the main cabinet and associated cabinets forming a bus differential protection cabinet. The wireless connection between the test equipment and the distributed tester, along with the transmission of different types of excitation via connectors, avoids the problems of testing being impossible due to the distance between the test host and associated cabinets, and eliminates the need for frequent wiring, thus simplifying the operation when testing multiple cabinets.

[0010] Furthermore, the testing equipment includes: a test host, a power source module, a secondary virtual machine, and a network load generator;

[0011] The test host is connected to the power source module, the secondary virtual machine, and the network load generator; the test host is wirelessly connected to the distributed tester; the power source module, the secondary virtual machine, and the standard aviation connector are respectively connected to the standard aviation connector via internal wiring.

[0012] The test host is used to send a second trigger signal to the power source module, the secondary virtual machine, and the network load generator; it is also used to send a first trigger signal to the distributed tester via wireless communication.

[0013] The power source module is used to send analog current and analog voltage to the main screen cabinet through the standard aviation plug after receiving the second trigger signal;

[0014] The secondary virtual machine is used to simulate the external process layer equipment connected to the main screen cabinet, and after receiving the second trigger signal, it sends the equipment simulation signal to the main screen cabinet through the standard aviation plug;

[0015] The network load generator is used to send network load to the main screen cabinet through the standard flight plug after receiving the second trigger signal.

[0016] The test equipment of this invention uses a power source module, a secondary virtual machine, and a network load generator to send analog signals, analog signals from the process layer devices, and network loads to the main cabinet, respectively. Different types of excitation signals are applied to the main cabinet through standard aviation plugs, and the test of associated cabinets is achieved through wireless communication between the test host and the distributed tester, which simplifies the operation when testing multiple cabinets.

[0017] Furthermore, the test host includes: an excitation control module, a wireless communication module, a data acquisition module, a data analysis module, and a data recording module;

[0018] The excitation control module is used to send a first trigger signal to the wireless communication module; and to send a second trigger signal to the power source module, the secondary virtual machine, and the network load generator.

[0019] The wireless communication module is used to establish a wireless connection between the test host and the distributed tester, and to transmit the first trigger signal to the distributed tester;

[0020] The data analysis module is used to analyze whether the main screen cabinet is operating normally based on the excitation signal and the feedback signal; the excitation signal includes: analog current, analog voltage, device analog signal, network load and first excitation signal;

[0021] The data recording module is used to process the analysis results of the data analysis module.

[0022] On the other hand, embodiments of the present invention also provide a substation cabinet testing method, applied to the substation cabinet testing system described in embodiments of the present invention, comprising:

[0023] The first test stimulus is transmitted to the main display cabinet via a standard air connector; a first trigger signal is sent to the distributed tester via wireless communication, so that the distributed tester applies the first stimulus signal to the associated display cabinet; wherein, the standard air connector is connected to the first test air connector of the main display cabinet; and the distributed tester is connected to the second test air connector of the associated display cabinet.

[0024] The feedback signal of the bus differential protection cabinet is received through the standard aviation connector and the distributed tester; wherein, the bus differential protection cabinet is composed of a main cabinet and a related cabinet connected by a loop.

[0025] Based on the excitation signal, the feedback prediction value of the bus differential protection cabinet under the excitation signal is predicted, and the test result is generated after comparing and analyzing the feedback prediction value and the feedback signal; wherein, the excitation signal includes: the first test excitation and the first excitation signal.

[0026] This invention connects the main cabinet to a test connector via a standard connector, and completes the test by applying excitation to the main cabinet. Furthermore, a distributed tester applies excitation to associated cabinets via their test connectors, enabling testing of the main cabinet and associated cabinets forming a bus differential protection cabinet. The wireless connection between the test equipment and the distributed tester, along with the transmission of different types of excitation via connectors, avoids the problems of testing being impossible due to the distance between the test host and associated cabinets, and eliminates the need for frequent wiring, thus simplifying the operation when testing multiple cabinets.

[0027] Furthermore, the transmission of the first test stimulus to the main display cabinet via the standard flight plug includes:

[0028] The first test stimulus includes: analog signals and digital signals;

[0029] The power source module sends the analog signal and the switch signal to the main panel cabinet through the standard aviation plug to simulate the working conditions of different branches connected to the bus, so that the main panel cabinet can receive fault excitation.

[0030] Furthermore, the transmission of the first test stimulus to the main display cabinet via the standard flight plug also includes:

[0031] A secondary virtual machine is used to simulate each interval smart terminal, mimicking the GOOSE message of the switch position status.

[0032] The GOOSE message is sent to the main control panel via the standard aviation connector, so that the bus differential protection control panel can operate under different bus conditions.

[0033] Furthermore, the transmission of the first test stimulus to the main display cabinet via the standard flight plug also includes:

[0034] A network load generator is used to generate network loads and first messages at different port rates, and the network loads and first messages are sent to the process layer communication interface of the main screen cabinet through the standard aviation plug.

[0035] Furthermore, the step of receiving the feedback signal from the bus differential protection cabinet through the standard aviation connector and the distributed tester specifically involves:

[0036] The first GOOSE feedback signal from the main control panel is collected using the standard aviation connector; the second GOOSE feedback signal from the bus differential protection panel under different trip protection conditions is collected using the distributed tester.

[0037] On the other hand, embodiments of the present invention also provide a substation cabinet testing device, including: an excitation sending module, a feedback receiving module, and a result generation module;

[0038] The excitation sending module is used to transmit a first test excitation to the main display cabinet via a standard air connector; and to send a first trigger signal to the distributed tester via wireless communication, so that the distributed tester applies a first excitation signal to the associated display cabinet; wherein the standard air connector is connected to the first test air connector of the main display cabinet; and the distributed tester is connected to the second test air connector of the associated display cabinet.

[0039] The feedback receiving module is used to receive feedback signals from the bus differential protection cabinet through the standard aviation connector and the distributed tester; wherein, the bus differential protection cabinet is composed of a main cabinet and a related cabinet connected by a loop.

[0040] The result generation module is used to predict the feedback prediction value of the bus differential protection cabinet under the excitation signal, and generate test results by comparing and analyzing the feedback prediction value and the feedback signal; wherein, the excitation signal includes: the first test excitation and the first excitation signal.

[0041] This invention connects the main cabinet to a test connector via a standard connector, and completes the test by applying excitation to the main cabinet. Furthermore, a distributed tester applies excitation to associated cabinets via their test connectors, enabling testing of the main cabinet and associated cabinets forming a bus differential protection cabinet. The wireless connection between the test equipment and the distributed tester, along with the transmission of different types of excitation via connectors, avoids the problems of testing being impossible due to the distance between the test host and associated cabinets, and eliminates the need for frequent wiring, thus simplifying the operation when testing multiple cabinets.

[0042] Furthermore, the stimulus transmission module includes: a first stimulus transmission unit;

[0043] The first test stimulus includes: analog signals and digital signals;

[0044] The first excitation sending unit is used to send the analog signal and the switching signal to the main panel cabinet through the standard aviation plug using a power source module, to simulate the working conditions of different branches connected to the bus, so that the main panel cabinet receives the fault excitation. Attached Figure Description

[0045] Figure 1 A schematic diagram of one embodiment of the substation cabinet testing system provided by the present invention;

[0046] Figure 2 A schematic diagram of a standard aviation connector provided for this invention;

[0047] Figure 3 A flowchart illustrating one embodiment of the substation cabinet testing method provided by the present invention;

[0048] Figure 4 This is a schematic diagram of one embodiment of the substation cabinet testing device provided by the present invention. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0050] Please refer to Figure 1 This is a schematic diagram of an embodiment of the substation cabinet testing system provided by the present invention. The substation cabinet testing system includes: testing equipment, standard aviation connectors, and distributed testing instruments.

[0051] The test equipment is connected to the standard air connector; the test equipment is wirelessly connected to the distributed tester; the standard air connector is connected to the first test air connector of the main cabinet; the distributed tester is connected to the second test air connector of the associated cabinet; the main cabinet and the associated cabinet are connected by a loop to form a bus differential protection cabinet.

[0052] The testing equipment is used to send analog signals to the main display cabinet via the standard air connector; to simulate process layer equipment and send equipment analog signals to the main display cabinet via the standard air connector; to send network load to the main display cabinet via the standard air connector; and to send a first trigger signal to the distributed tester via wireless communication.

[0053] The standard aviation connector is used to transmit analog signals, equipment analog signals, and network load; and to receive the first feedback signal from the main display cabinet.

[0054] The distributed tester is used to apply a first excitation signal to the associated cabinet through the second test socket after receiving a first trigger signal; and to receive a second feedback signal from the associated cabinet.

[0055] In this embodiment, both the main cabinet and associated cabinets are equipped with test connectors. These connectors only integrate the necessary excitation input and output terminals for testing, excluding existing functional circuit connections between cabinets and other circuit connections under test. The wireless connection is either Wi-Fi or WAPI. Multiple distributed testers can be used to test multiple associated cabinets simultaneously, enabling joint testing of multiple cabinets.

[0056] Please refer to Figure 2The present invention provides a schematic diagram of a standard aviation connector, wherein U1, U2, and U3 are voltage channels used for outputting and receiving multiple analog voltage signals; I1, I2, and I3 are current channels used for outputting and receiving multiple analog current signals; DI1, DI2, DI3, and DI-Com are digital input interfaces; D01+, D02+, and D03+ are digital output interfaces for outputting high-level signals; D01-, D02-, and D03- are digital output interfaces for outputting low-level signals; 485+, 485-, and 485D are RS485 interfaces; and Lan is a local area network interface used for outputting network load.

[0057] In this embodiment, the testing equipment includes: a test host, a power source module, a secondary virtual machine, and a network load generator;

[0058] The test host is connected to the power source module, the secondary virtual machine, and the network load generator; the test host is wirelessly connected to the distributed tester; the power source module, the secondary virtual machine, and the standard aviation connector are respectively connected to the standard aviation connector via internal wiring.

[0059] The test host is used to send a second trigger signal to the power source module, the secondary virtual machine, and the network load generator; it is also used to send a first trigger signal to the distributed tester via wireless communication.

[0060] The power source module is used to send analog current and analog voltage to the main screen cabinet through the standard aviation plug after receiving the second trigger signal;

[0061] The secondary virtual machine is used to simulate the external process layer equipment connected to the main screen cabinet, and after receiving the second trigger signal, it sends the equipment simulation signal to the main screen cabinet through the standard aviation plug;

[0062] The network load generator is used to send network load to the main screen cabinet through the standard flight plug after receiving the second trigger signal.

[0063] In this embodiment, the test host is a server, preferably an x86 server; the network load generator sends network load to the main display cabinet to simulate the external network environment under conditions such as GOOSE network tripping.

[0064] In this embodiment, the test host includes: an excitation control module, a wireless communication module, a data acquisition module, a data analysis module, and a data recording module;

[0065] The excitation control module is used to send a first trigger signal to the wireless communication module; and to send a second trigger signal to the power source module, the secondary virtual machine, and the network load generator.

[0066] The wireless communication module is used to establish a wireless connection between the test host and the distributed tester, and to transmit the first trigger signal to the distributed tester;

[0067] The data analysis module is used to analyze whether the main screen cabinet is operating normally based on the excitation signal and the feedback signal; the excitation signal includes: analog current, analog voltage, device analog signal, network load and first excitation signal;

[0068] The data recording module is used to process the analysis results of the data analysis module.

[0069] In this embodiment, the wireless communication module enables Wi-Fi or WAPI communication between the test host and the distributed tester. The data analysis module performs logical analysis between the excitation signal and the feedback signal, generates analysis results, and determines whether the tested object is normal.

[0070] This invention uses a flight plug to quickly connect all the target cabinets and associated cabinets for testing. This flight plug connection is a test connection and does not include the existing connection between the target cabinet and associated cabinets. In fact, this part of the connection is also the loop object being tested in the joint testing of multiple cabinets.

[0071] Please refer to Figure 3 The above is a flowchart illustrating an embodiment of the substation cabinet testing method provided by the present invention, including steps 101-103, as follows:

[0072] Step 101: Transmit the first test stimulus to the main cabinet via a standard aviation connector; send the first trigger signal to the distributed tester via wireless communication, so that the distributed tester applies the first stimulus signal to the associated cabinet.

[0073] In this embodiment, the standard flight connector is connected to the first test flight connector of the main screen cabinet; the distributed tester is connected to the second test flight connector of the associated screen cabinet.

[0074] In this embodiment, step 101 includes: wherein the first test stimulus includes: analog signal and switch signal; the power source module sends the analog signal and the switch signal to the main panel cabinet through the standard aviation plug to simulate the working conditions of different branches connected to the bus, so that the main panel cabinet receives the fault stimulus.

[0075] In this embodiment, step 101 further includes: using a secondary virtual machine to simulate each interval intelligent terminal, imitating the GOOSE message of the switch position state; sending the GOOSE message to the main panel cabinet through the standard aviation plug, so that the bus differential protection panel cabinet operates in different bus operating conditions.

[0076] In this embodiment, the switch position includes the disconnect switch position, and the busbar operating status includes busbar interconnection and busbar splitting.

[0077] In this embodiment, step 101 further includes: using a network load generator to generate network loads and first messages at different port rates, and sending the network loads and first messages to the process layer communication interface of the main screen cabinet through the standard flight plug.

[0078] In this embodiment, the first message includes: network storm message, StNum continuous message, and StNum hop message. Port rates include: 0%, 10%, 50%, 90%, and 100% port rates.

[0079] In this embodiment, the data channels connected to the standard connector include: current channels for each branch of the bus differential protection device and bus voltage channels; interfaces are provided by multiple power sources for analog sampling and by a secondary virtual machine for digital sampling; a network load channel is also included, with an interface provided by a network load generator; GOOSE signals sent from other bay intelligent terminals to the bus differential protection are also included, with an interface provided by the secondary virtual machine; and an MMS communication link is also included, with an interface provided by the test host. The test system P6 is connected to the associated lines and main transformer cabinets to obtain the remote trip output signals for line protection and the interlocking trip output signals for main transformer protection failure.

[0080] Step 102: Receive feedback signals from the bus differential protection cabinet through the standard aviation connector and the distributed tester.

[0081] In this embodiment, the bus differential protection cabinet consists of a main cabinet and a receiving associated cabinet connected by a loop.

[0082] In this embodiment, step 102 specifically involves: acquiring the first GOOSE feedback signal from the main control panel via the standard aviation connector; and acquiring the second GOOSE feedback signal from the bus differential protection panel under different trip protection conditions via the distributed tester.

[0083] In this embodiment, by inputting an excitation signal to the standard aviation connector, the network load and bus status are simulated, and an excitation is applied to the loop between the target cabinet and the associated cabinet. The excitation is then fed back to the target cabinet through the connection between the associated cabinet and the target cabinet.

[0084] Step 103: Based on the excitation signal, predict the feedback prediction value of the bus differential protection cabinet under the excitation signal, and generate test results by comparing and analyzing the feedback prediction value and the feedback signal.

[0085] In this embodiment, the excitation signal includes: the first test excitation and the first excitation signal.

[0086] In this embodiment, after generating the test results, the results are saved to the data recording module. The connection between the standard flight connector and the test flight connector of the main cabinet is then disconnected, as is the connection between the distributed tester and the test flight connector of the associated cabinet. Through these steps, joint testing of secondary cabinets is quickly achieved. By rapidly changing the specific method for testing the bus differential protection cabinet, the functional, circuit, and engineering configuration tests of the bus differential protection cabinet can be completed sequentially. Then, a line change is performed to sequentially complete the joint testing of the line protection cabinet, main transformer protection cabinet, and other cabinets.

[0087] Please refer to Figure 4 This is a schematic diagram of the structure of an embodiment of the substation cabinet testing device provided by the present invention, which mainly includes: an excitation sending module 201, a feedback receiving module 202 and a result generation module 203.

[0088] In this embodiment, the excitation sending module 201 is used to transmit a first test excitation to the main display cabinet via a standard air plug; and to send a first trigger signal to the distributed tester via wireless communication, so that the distributed tester applies a first excitation signal to the associated display cabinet; wherein the standard air plug is connected to the first test air plug of the main display cabinet; and the distributed tester is connected to the second test air plug of the associated display cabinet.

[0089] In this embodiment, the excitation sending module 201 includes: a first excitation sending unit; wherein, the first test excitation includes: an analog signal and a switching signal; the first excitation sending unit is used to send the analog signal and the switching signal to the main panel cabinet through the standard aviation plug using a power source module, to simulate the working conditions of different branches connected to the bus, so that the main panel cabinet receives the fault excitation.

[0090] In this embodiment, the excitation sending module 201 includes a second excitation sending unit and a third excitation sending unit. The second excitation sending unit is used to simulate intelligent terminals in each interval using a secondary virtual machine, mimicking GOOSE messages of switch position states; and to send the GOOSE messages to the main control cabinet via the standard connector, so that the bus differential protection cabinet operates under different bus conditions. The third excitation sending unit is used to generate network loads and first messages at different port rates using a network load generator, and to send the network loads and first messages to the process layer communication interface of the main control cabinet via the standard connector.

[0091] The feedback receiving module 202 is used to receive feedback signals from the bus differential protection cabinet through the standard aviation connector and the distributed tester; wherein, the bus differential protection cabinet is composed of a main cabinet and a related cabinet connected by a loop.

[0092] The result generation module 203 is used to predict the feedback prediction value of the bus differential protection cabinet under the excitation signal according to the excitation signal, and generate test results after comparing and analyzing the feedback prediction value and the feedback signal; wherein, the excitation signal includes: the first test excitation and the first excitation signal.

[0093] This invention connects the main cabinet to a test connector via a standard connector, and completes the test by applying excitation to the main cabinet. Furthermore, a distributed tester applies excitation to associated cabinets via their test connectors, enabling testing of the main cabinet and associated cabinets forming a bus differential protection cabinet. The wireless connection between the test equipment and the distributed tester, along with the transmission of different types of excitation via connectors, avoids the problems of testing being impossible due to the distance between the test host and associated cabinets, and eliminates the need for frequent wiring, thus simplifying the operation when testing multiple cabinets.

[0094] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above descriptions are merely specific embodiments of the present invention and are not intended to limit the scope of protection of the present invention. In particular, it should be noted that any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention for those skilled in the art.

Claims

1. A substation panel cabinet testing system, characterized in that, include: Test equipment, standard flight plugs, and distributed test instruments; The test equipment is connected to the standard air connector; the test equipment is wirelessly connected to the distributed tester; the standard air connector is connected to the first test air connector of the main cabinet; the distributed tester is connected to the second test air connector of the associated cabinet; the main cabinet and the associated cabinet are connected by a loop to form a bus differential protection cabinet. The testing equipment is used to send analog signals to the main display cabinet via the standard air connector; to simulate process layer equipment and send equipment analog signals to the main display cabinet via the standard air connector; to send network load to the main display cabinet via the standard air connector; and to send a first trigger signal to the distributed tester via wireless communication. The standard aviation connector is used to transmit analog signals, equipment analog signals, and network load; and to receive the first feedback signal from the main display cabinet. The distributed tester is used to apply a first excitation signal to the associated cabinet through the second test socket after receiving a first trigger signal; and to receive a second feedback signal from the associated cabinet. The testing equipment includes: a test host, a power source module, a secondary virtual machine, and a network load generator; wherein, the test host is connected to the power source module, the secondary virtual machine, and the network load generator; the test host is wirelessly connected to the distributed tester; the power source module, the secondary virtual machine, and the standard aviation connector are respectively connected to the standard aviation connector via internal wiring; the test host is used to send a second trigger signal to the power source module, the secondary virtual machine, and the network load generator; and is also used to send a first trigger signal to the distributed tester via wireless communication; the power source module is used to send analog current and analog voltage quantities to the main display cabinet via the standard aviation connector after receiving the second trigger signal; the secondary virtual machine is used to simulate external process layer devices connected to the main display cabinet, and after receiving the second trigger signal, sends device simulation signals to the main display cabinet via the standard aviation connector; the network load generator is used to send network load to the main display cabinet via the standard aviation connector after receiving the second trigger signal.

2. The substation cabinet testing system as described in claim 1, characterized in that, The test host includes: an excitation control module, a wireless communication module, a data acquisition module, a data analysis module, and a data recording module; The excitation control module is used to send a first trigger signal to the wireless communication module; and to send a second trigger signal to the power source module, the secondary virtual machine, and the network load generator. The wireless communication module is used to establish a wireless connection between the test host and the distributed tester, and to transmit the first trigger signal to the distributed tester; The data analysis module is used to analyze whether the main screen cabinet is operating normally based on the excitation signal and the feedback signal; the excitation signal includes: analog current, analog voltage, device analog signal, network load and first excitation signal; The data recording module is used to process the analysis results of the data analysis module.

3. A method for testing substation cabinets, characterized in that, The substation panel cabinet testing system as described in any one of claims 1-2 includes: The first test stimulus is transmitted to the main display cabinet via a standard air connector; a first trigger signal is sent to the distributed tester via wireless communication, so that the distributed tester applies the first stimulus signal to the associated display cabinet; wherein, the standard air connector is connected to the first test air connector of the main display cabinet; and the distributed tester is connected to the second test air connector of the associated display cabinet. The feedback signal of the bus differential protection cabinet is received through the standard aviation connector and the distributed tester; wherein, the bus differential protection cabinet is composed of a main cabinet and a related cabinet connected by a loop. Based on the excitation signal, the feedback prediction value of the bus differential protection cabinet under the excitation signal is predicted, and the test result is generated after comparing and analyzing the feedback prediction value and the feedback signal; wherein, the excitation signal includes: the first test excitation and the first excitation signal.

4. The substation cabinet testing method as described in claim 3, characterized in that, The first test stimulus is transmitted to the main screen cabinet via a standard aviation connector. include: The first test stimulus includes: analog signals and digital signals; The power source module sends the analog signal and the switch signal to the main panel cabinet through the standard aviation plug to simulate the working conditions of different branches connected to the bus, so that the main panel cabinet can receive fault excitation.

5. The substation panel cabinet testing method as described in claim 4, characterized in that, The transmission of the first test stimulus to the main display cabinet via the standard aviation connector also includes: A secondary virtual machine is used to simulate each interval smart terminal, mimicking the GOOSE message of the switch position status. The GOOSE message is sent to the main control panel via the standard aviation connector, so that the bus differential protection control panel can operate under different bus conditions.

6. The substation cabinet testing method as described in claim 4, characterized in that, The transmission of the first test stimulus to the main display cabinet via the standard aviation connector also includes: A network load generator is used to generate network loads and first messages at different port rates, and the network loads and first messages are sent to the process layer communication interface of the main screen cabinet through the standard aviation plug.

7. The substation panel cabinet testing method as described in claim 3, characterized in that, The specific steps for receiving feedback signals from the bus differential protection cabinet via the standard aviation connector and the distributed tester are as follows: The first GOOSE feedback signal from the main control panel is collected using the standard aviation connector; the second GOOSE feedback signal from the bus differential protection panel under different trip protection conditions is collected using the distributed tester.

8. A substation panel cabinet testing device, characterized in that, The substation panel cabinet testing method as described in any one of claims 3 to 7 includes: an excitation sending module, a feedback receiving module, and a result generation module; The excitation sending module is used to transmit a first test excitation to the main display cabinet via a standard air connector; and to send a first trigger signal to the distributed tester via wireless communication, so that the distributed tester applies a first excitation signal to the associated display cabinet; wherein the standard air connector is connected to the first test air connector of the main display cabinet; and the distributed tester is connected to the second test air connector of the associated display cabinet. The feedback receiving module is used to receive feedback signals from the bus differential protection cabinet through the standard aviation connector and the distributed tester; wherein, the bus differential protection cabinet is composed of a main cabinet and a related cabinet connected by a loop. The result generation module is used to predict the feedback prediction value of the bus differential protection cabinet under the excitation signal, and generate test results by comparing and analyzing the feedback prediction value and the feedback signal; wherein, the excitation signal includes: the first test excitation and the first excitation signal.

9. The substation cabinet testing device as described in claim 8, characterized in that, The incentive transmission module includes: a first incentive transmission unit; The first test stimulus includes: analog signals and digital signals; The first excitation sending unit is used to send the analog signal and the switching signal to the main panel cabinet through the standard aviation plug using a power source module, to simulate the working conditions of different branches connected to the bus, so that the main panel cabinet receives the fault excitation.

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