Feeder automation complete test device and test method thereof

Abstract

The invention relates to a complete set of feeder automation test device and a test method thereof, the complete set of feeder automation test device comprises an analog current generation module and a plurality of power distribution test modules, each power distribution test module at least comprises a first control unit, a second control unit and a monitoring unit, and all the power distribution test modules are connected in series. The first end of the monitoring unit is used as a fault detection input port of the power distribution test module, and the second end of the monitoring unit is connected with a common node between the first end of the first control unit and the first end of the second control unit to form a monitoring circuit corresponding to the power distribution test module; the test module tests the response capability of the power distribution system by acquiring the operation states of the first control unit, the second control unit and the monitoring unit. Fault points are allowed to be flexibly set in different power distribution test modules, and independent fault assignment and setting can be performed on different modules according to actual test requirements.

Description

Technical Field

[0001] The present application relates to the field of feeder automation complete set testing, and in particular to a feeder automation complete set testing device and a testing method thereof. Background Art

[0002] In the existing feeder automation test equipment, the grid fault point setting is not flexible enough; usually, the fault point setting position is fixed and cannot be flexibly adjusted according to actual needs. This means that when conducting complex tests, it is difficult to set and assign values ​​to fault points at different locations separately, thus affecting the comprehensiveness and accuracy of the test. Summary of the invention

[0003] In order to solve the problem that it is difficult to individually set and assign values ​​to fault points at different locations in existing feeder automation test devices, thereby affecting the comprehensiveness and accuracy of the test, the present application provides a feeder automation test device and a test method thereof.

[0004] The present application provides a feeder automation complete test device that adopts the following technical solution: A complete set of feeder automation test devices, including a simulation current generating module and a plurality of distribution test modules, wherein the distribution test module at least includes a first control unit, a second control unit and a monitoring unit, wherein the second end of the first control unit serves as the first main current port of the distribution test module, and the second end of the second control unit serves as the second main current port of the distribution test module, the first main current generating port of the simulation current generating module is connected to the first main current port of the distribution test module, and the second main current port of the distribution test module is connected to the first main current port of another distribution test module until all the distribution test modules are connected in series, and the second main current port of the distribution test module at the end of the series connection is connected to the simulation current generating module. The second main current generating port of the generating module is connected to form a main current test circuit, the first end of the monitoring unit of each of the power distribution test modules serves as the fault detection input port of the power distribution test module to be connected to the analog fault signal output port of the analog current generating module, the second end of the monitoring unit is connected to the common node between the first end of the first control unit and the first end of the second control unit, and then connected to the main current test circuit to form a monitoring circuit corresponding to the power distribution test module; the test module is used to simulate the current of the main current test circuit and the monitoring circuit, and then test the response capability of the distribution system by obtaining the operating status of the first control unit, the second control unit and the monitoring unit.

[0005] By adopting the above technical solution, the analog current generation module and the power distribution test module can be interconnected to form multiple test loops, and the monitoring unit included in each power distribution test module has a fault detection input port and is connected to the fault signal output port of the analog current generation module. This design allows the fault point to be flexibly set in different power distribution test modules, and different modules can be assigned and set separately according to actual test requirements, which solves the problem of insufficient flexibility in fault point setting in the prior art.

[0006] Preferably, the first control unit includes at least one circuit breaker, which is located in the upstream circuit of the power distribution test module to detect and disconnect overload or short-circuit current.

[0007] By adopting the above technical solution, when an overload or short-circuit current is detected during the test, the circuit can be disconnected immediately to protect the safe operation of the system. As part of the upstream circuit, the circuit breaker can quickly respond to abnormal currents to ensure that other downstream circuits and equipment are not damaged, thereby improving the overall safety and stability of the system.

[0008] Preferably, the second control unit includes at least one isolating switch, which is located in the downstream circuit of the circuit breaker and is used for electrically isolating the circuit to be repaired after the circuit breaker cuts off the power supply.

[0009] By adopting the above technical solution, the circuit to be repaired can be electrically isolated after the circuit breaker cuts off the power supply. By setting the isolation switch, the circuit can be repaired and maintained under the premise of ensuring safety, preventing accidents caused by misoperation or accidental power restoration, thereby improving the safety maintenance capability of the system.

[0010] Preferably, the monitoring unit includes at least one current transformer for monitoring the current passing through the first control unit and the second control unit.

[0011] By adopting the above technical solution, the current changes passing through the first control unit and the second control unit can be monitored in real time. Through the monitoring function of the current transformer, the actual operating state of the current in the system can be accurately obtained, and potential faults can be discovered and warned in time, thereby improving the fault detection and prevention capabilities of the system.

[0012] Preferably, the monitoring unit includes at least one fuse for redundantly protecting the second control unit.

[0013] By adopting the above technical solution, redundant protection can be provided when an abnormal situation occurs in the second control unit. Through the redundant protection function of the fuse, the safety of the circuit can be guaranteed when the isolating switch cannot work normally, thereby further improving the protection capability of the system and avoiding greater damage to the system due to the spread of faults.

[0014] Preferably, the test module includes a current generating device, a switch S01 and a switch S02, the first current generating end of the current generating device is connected to the first end of the switch S01, the second end of the switch S01 serves as the first main current generating port of the analog current generating module, the first current generating end of the current generating device is connected to the first end of the switch S02, the second end of the switch S02 serves as the second main current generating port of the analog current generating module, and the third current generating end and the fourth current generating end of the current generating device both serve as analog fault signal output ports of the analog current generating module.

[0015] By adopting the above technical solution, different current paths can be simulated by controlling the states of switch S01 and switch S02. Through this structural design, the test module can flexibly simulate different current conditions in actual operation and accurately control the current size through the current generating device, thereby improving the accuracy and reliability of the test.

[0016] A feeder automatic test method, comprising: Acquire electrical connection status data of each power distribution test module, and generate a topological structure of a series circuit of the power distribution test module according to the electrical connection status data; According to the topological structure, at least determine the positional relationship and functional allocation of the power distribution test modules; Generate a simulated fault signal according to the positional relationship and the functional allocation, and inject the simulated fault signal into the fault detection input port of the power distribution test module through the simulated current generation module; By monitoring the response of the power distribution test module generated based on the simulated fault signal and based on the trained test model, the fault test result of the power distribution system is calculated.

[0017] By adopting the above technical solution, the specific position and functional allocation of each power distribution test module can be accurately located, thereby providing reliable basic data support for subsequent testing and fault simulation, thereby improving the accuracy of the test.

[0018] Preferably, the step of obtaining the electrical connection status data of each power distribution test module includes: According to the power distribution test module, one or more key units are identified; Acquire the working status data of the key units and the connection relationship data of each of the key units; The working status data and the connection relationship data are integrated to generate corresponding electrical connection status data.

[0019] By adopting the above technical solution, by determining one or more key units, the working status and connection relationship data of these key units can be obtained. By integrating these data, electrical connection status data can be generated comprehensively and accurately, thereby providing a solid foundation for the simulation of the test loop and the accuracy of the test results, thereby improving the reliability of the test.

[0020] Preferably, the step of monitoring the response of the power distribution test module generated based on the simulated fault signal and calculating the fault test result of the power distribution system based on the trained test model includes: Based on the simulated fault signal, determining a response unit of the power distribution test module; Monitoring the response status and unit type of each of the response units, wherein the response status at least includes a current response time; Determine the corresponding preset standard response time and preset standard response range according to the unit type; The threshold value compares the current response time with the preset standard response time to generate a response difference value of each of the response units; Determine a target unit among the response units, and determine other response units associated with the target unit as associated units based on a preset standard response range of the target unit; Substituting the response difference between the target unit and the associated unit into the trained test model to calculate the response result, and then calculating the response results corresponding to other response units in turn; The response results are integrated to generate a fault test result of the power distribution system.

[0021] By adopting the above technical solution, the response unit of the power distribution test module can be accurately determined based on the simulated fault signal. By monitoring the response status and unit type of each response unit and comparing it with the preset standard, abnormal response can be discovered in time and accurate fault test results can be calculated through the trained test model, thereby improving the efficiency and accuracy of system fault detection.

[0022] Preferably, the step of integrating the response results to generate a fault test result of the power distribution system includes: Determine a corresponding status score according to the response result; According to the unit type, determining a corresponding weighting coefficient; The product of each of the state scores and the corresponding weighting coefficient is added together to generate a fault test result of the power distribution system.

[0023] By adopting the above technical solution, by determining the state score according to the response result and determining the weighting coefficient in combination with the unit type, the product of each state score and the corresponding weighting coefficient can be weighted averaged to generate the final fault test result of the distribution system. Through this weighted calculation method, the overall operating status of the distribution system can be fully and objectively reflected, thereby providing an important reference basis for the maintenance and optimization of the system and improving the comprehensiveness and accuracy of fault diagnosis.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. The analog current generation module and the power distribution test module can be interconnected to form multiple test loops. The monitoring unit included in each power distribution test module has a fault detection input port and is connected to the fault signal output port of the analog current generation module. This design allows the fault point to be flexibly set in different power distribution test modules, and different modules can be assigned and set separately according to actual test requirements, solving the problem of inflexible fault point setting in the prior art; 2. The feeder automation test set includes a simulated current generation module and multiple distribution test modules, which can accurately detect and evaluate the operating status of the distribution system by simulating the actual current generation process. Since each distribution test module has a first control unit, a second control unit and a monitoring unit, these modules are connected in series through the main current port to form a complete test loop, so they can effectively simulate and evaluate the response capability of the distribution system under different load and fault conditions, thereby improving the test efficiency and reliability of the entire distribution system.

[0025] 3. The present application connects the power distribution test modules in series, and each power distribution test module can be monitored and operated individually; this means that the operation mode of the grid and the equipment unit is replaceable, and the operating modules can be adjusted or replaced according to actual needs, which solves the shortcomings of the prior art of fixed operation mode and lack of flexibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of a partial circuit structure of a feeder automation complete test device in an embodiment of the present application.

[0027] Figure 2 It is a flow chart of a feeder automated complete test method according to an embodiment of the present application.

[0028] Figure 3 It is a flowchart for implementing step S10 in a feeder automation complete test method according to an embodiment of the present application.

[0029] Figure 4 It is a flowchart for implementing step S40 in a feeder automation complete test method according to an embodiment of the present application.

[0030] Figure 5 It is a flowchart for implementing step S407 in a feeder automation complete test method according to an embodiment of the present application.

[0031] Description of reference numerals: 1. Simulated current generating module; 11. Current generating device; 2. Power distribution test module; 21. First control unit; 22. Second control unit; 23. Monitoring unit; DETAILED DESCRIPTION The following is combined with Figure 1-5 This application is described in further detail.

[0032] like Figure 1 As shown, a feeder automation test device comprises a simulation current generating module 1 and a plurality of power distribution test modules 2, wherein the power distribution test module 2 comprises at least a first control unit 21, a second control unit 22 and a monitoring unit 23, wherein the second end of the first control unit 21 serves as the first main current port of the power distribution test module 2, and the second end of the second control unit 22 serves as the second main current port of the power distribution test module 2, the first main current generating port of the simulation current generating module 1 is connected to the first main current port of the power distribution test module 2, the second main current port of the power distribution test module 2 is connected to the first main current port of another power distribution test module 2, until all the power distribution test modules 2 are connected in series, and the second main current port of the power distribution test module 2 at the end of the series connection is connected to the simulation current generating module 1. The second main current generating port of the simulated current generating module 1 is connected to form a main current test circuit, the first end of the monitoring unit 23 of each of the distribution test modules 2 serves as the fault detection input port of the distribution test module 2 to be connected to the simulated fault signal output port of the simulated current generating module 1, the second end of the monitoring unit 23 is connected to a common node between the first end of the first control unit 21 and the first end of the second control unit 22, and then connected to the main current test circuit to form a monitoring circuit corresponding to the distribution test module 2; the test module is used to simulate the current of the main current test circuit and the monitoring circuit, and then test the response capability of the distribution system by obtaining the operating status of the first control unit 21, the second control unit 22 and the monitoring unit 23.

[0033] In this embodiment, the first main current generating port of the analog current generating module 1 is connected to the first main current port of the first power distribution test module 2 through a connecting wire, and the second main current port of the power distribution test module 2 is connected to the first main current port of the next power distribution test module 2 through another wire. By analogy, all the power distribution test modules 2 are connected in series in sequence to form a continuous current loop. Finally, the second main current port of the last power distribution test module 2 is connected to the second main current generating port of the analog current generating module 1, thereby forming a complete main current test circuit. In this loop, the current is emitted by the analog current generating module 1, passes through each power distribution test module 2, and then returns to the analog current generating module 1. In this way, by setting the monitoring unit 23 in each power distribution test module 2, the current flowing through each module can be monitored in real time to ensure that the electrical connection state of the entire loop is normal, and a fault point can be inserted at any position in the loop to test the fault response capability of the system.

[0034] In this embodiment, the monitoring unit 23 in each power distribution test module 2 includes a fault detection input port, which is directly connected to the analog fault signal output port of the analog current generating module 1 through a wire. The analog fault signal is introduced into each monitoring unit 23 through this connection to simulate different types of fault conditions. The other end of the monitoring unit 23 is connected to the common node between the first control unit 21 and the second control unit 22 in the power distribution test module 2, so that when the analog fault signal is input, the monitoring unit 23 can immediately reflect the impact of the fault signal, thereby evaluating the response capability of the entire system through dynamic monitoring of the first and monitoring circuits. This structural design makes the setting and adjustment of the fault point very flexible, and can quickly change the type and position of the fault signal according to specific test requirements, thereby improving the adaptability and accuracy of the test.

[0035] In summary, the analog current generating module 1 and the power distribution test module 2 can be interconnected to form multiple test loops, and the monitoring unit 23 included in each power distribution test module 2 has a fault detection input port and is connected to the fault signal output port of the analog current generating module 1. This design allows the fault point to be flexibly set in different power distribution test modules 2, and different modules can be assigned and set separately according to actual test requirements, which solves the problem of insufficient flexibility in fault point setting in the prior art.

[0036] Specifically, Figure 1 As shown, the first control unit 21 includes at least one circuit breaker, which is located in the upstream circuit of the power distribution test module 2 to detect and disconnect overload or short-circuit current.

[0037] In this embodiment, the circuit breaker is configured in the upstream circuit position of the power distribution test module 2. When a current overload or short circuit is detected, the circuit breaker can quickly cut off the circuit to prevent excessive current from continuing to flow and protect downstream equipment in the system from damage. The circuit breaker has a very fast response speed and can respond as soon as the current anomaly occurs to ensure the safe operation of the entire power system. During the test, the triggering conditions and response time of the circuit breaker can be recorded for subsequent analysis and optimization, providing data support for improving the reliability of the system.

[0038] In summary, when an overload or short-circuit current is detected during the test, the circuit can be disconnected immediately to protect the safe operation of the system. As part of the upstream circuit, the circuit breaker can quickly respond to abnormal currents to ensure that other downstream circuits and equipment are not damaged, thereby improving the overall safety and stability of the system.

[0039] Specifically, Figure 1 As shown, the second control unit 22 includes at least one isolating switch, which is located in the downstream circuit of the circuit breaker and is used to electrically isolate the circuit to be repaired after the circuit breaker cuts off the power supply.

[0040] In this embodiment, the isolating switch is installed in the downstream circuit of the circuit breaker. The main function of the isolating switch is to further isolate the circuit part to be repaired from the entire system after the circuit breaker cuts off the power supply, so as to ensure that there will be no misoperation or accidental power restoration when the maintenance personnel are performing maintenance. The isolating switch usually opens automatically after the circuit breaker is actuated, physically isolating the faulty circuit from the rest of the system, thereby providing a safe working environment and greatly improving the maintenance and operation safety of the system.

[0041] In summary, the circuit to be repaired can be electrically isolated after the circuit breaker cuts off the power supply. By setting up the isolation switch, the circuit can be repaired and maintained under the premise of ensuring safety, preventing accidents caused by misoperation or accidental power restoration, thereby improving the safety maintenance capability of the system.

[0042] Specifically, Figure 1 As shown, the monitoring unit 23 includes at least one current transformer for monitoring the current passing through the first control unit 21 and the second control unit 22 .

[0043] In this embodiment, the current transformer in the monitoring unit 23 is used to monitor the current flowing through the first control unit 21 and the second control unit 22. The current transformer can accurately capture the current changes passing through the two control units and transmit these change data to the monitoring center of the system in real time. By analyzing these data, the system can identify any potential faults or abnormal conditions and issue an alarm when necessary. This real-time monitoring capability enables the system to respond quickly and avoid further expansion of faults, thereby ensuring the stable and safe operation of the entire power system.

[0044] In summary, the current changes passing through the first control unit 21 and the second control unit 22 can be monitored in real time. Through the monitoring function of the current transformer, the actual operating state of the current in the system can be accurately obtained, and potential faults can be discovered and warned in time, thereby improving the fault detection and prevention capabilities of the system.

[0045] Specifically, Figure 1 As shown, the monitoring unit 23 includes at least one fuse for redundantly protecting the second control unit 22 .

[0046] In this embodiment, the fuse is mainly used to provide redundant protection for the second control unit 22. When the second control unit 22 is abnormal and cannot work normally, the fuse can quickly disconnect the circuit to prevent the power system from further damage. The fuse is usually set at a downstream position close to the second control unit 22 and has a very fast response speed to ensure that the system can still be protected even in the worst case. This redundant protection mechanism greatly enhances the fault tolerance of the system, ensuring that the system can still maintain safe operation even if a certain protection device fails.

[0047] In summary, redundant protection can be provided when an abnormal situation occurs in the second control unit 22. Through the redundant protection function of the fuse, the safety of the circuit can be guaranteed when the isolating switch cannot work normally, thereby further improving the protection capability of the system and avoiding greater damage to the system due to the spread of faults.

[0048] Specifically, Figure 1As shown, the test module includes a current generating device 11, a switch S01 and a switch S02, the first current generating end of the current generating device 11 is connected to the first end of the switch S01, the second end of the switch S01 serves as the first main current generating port of the analog current generating module 1, the first current generating end of the current generating device 11 is connected to the first end of the switch S02, the second end of the switch S02 serves as the second main current generating port of the analog current generating module 1, and the third current generating end and the fourth current generating end of the current generating device 11 both serve as analog fault signal output ports of the analog current generating module 1.

[0049] In this embodiment, the current generating device 11 in the test module is connected to the first end of the switch S01 through a wire, and the second end of the switch S01 is connected to the external circuit as the first main current generating port of the simulated current generating module 1. The other end of the current generating device 11 is connected to the first end of the switch S02, and the second end of the switch S02 is used as the second main current generating port of the simulated current generating module 1. Similarly, the third and fourth ports of the current generating device 11 are respectively used as output ports of simulated fault signals, which are used to input simulated fault signals to the monitoring units 23 of each power distribution test module 2. By controlling the on and off states of the switches S01 and S02, the system can simulate different current paths so as to test the response of the module under different current conditions, thereby improving the test accuracy and fault detection capability of the system.

[0050] In summary, different current paths can be simulated by controlling the states of switch S01 and switch S02. Through this structural design, the test module can flexibly simulate different current conditions in actual operation and accurately control the current size through the current generating device 11, thereby improving the accuracy and reliability of the test.

[0051] Specifically, Figure 2 As shown, a feeder automatic test method comprises: S10, acquiring electrical connection status data of each power distribution test module 2, and generating a topological structure of a series circuit of the power distribution test module 2 according to the electrical connection status data; In this embodiment, a comprehensive electrical connection status report is generated by detecting and recording the physical connection relationship, working status and electrical connection data between each power distribution test module 2 and other modules. These data include but are not limited to voltage, current, type and length of connecting wires, and functional attributes of each module (such as circuit breakers, disconnectors, monitoring units 23, etc.). Accurate acquisition of electrical connection status data is the basis for subsequent testing. Only after understanding the accurate connection status of each module can effective fault simulation and test analysis be performed. These data can intuitively reflect the current connection status of the system and help identify potential electrical problems, such as loose connections, voltage mismatches, or current overloads. A detailed topology diagram of the power distribution test module 2 is constructed based on the electrical connection status data obtained in the previous step. The topology diagram shows the connection sequence and current flow path between each power distribution test module 2, and clarifies the relative position of each module in the overall system. The topology structure can help technicians intuitively understand the layout of the entire system and provide a basis for system fault diagnosis. Under this topology structure, the state changes of any module can be tracked and analyzed in a graphical manner to quickly locate the fault point. For example, assuming that the response of a power distribution module in the topology structure is abnormal, the relationship between the module and other modules can be quickly identified through the structure diagram, so as to determine whether the relevant modules need to be adjusted or replaced.

[0052] S20, determining at least the position relationship and function allocation of the power distribution test module 2 according to the topological structure; In this embodiment, by analyzing the topological structure, the physical position of each power distribution test module 2 in the system and its specific functions are further clarified. Function allocation includes defining the role of each module, such as which module is responsible for current detection and which module is responsible for fault isolation or circuit breaking and other operations. Through this positional relationship and function allocation, the system can perform accurate fault simulation tests and ensure that the functions of each module can be fully utilized. For example, in a complex power testing system, some modules will be designated as the main fault detection nodes, while other modules will be assigned as fault isolation or protection units. Clear function allocation can avoid overlapping or insufficient functions in actual operations, thereby improving the testing efficiency and reliability of the system. S30, generating a simulated fault signal according to the positional relationship and the functional allocation, and injecting the simulated fault signal into the fault detection input port of the power distribution test module 2 through the simulated current generating module 1; In this embodiment, appropriate simulated fault signals are generated according to the location and functional allocation of each module. These signals may be overload signals, short circuit signals or other abnormal current signals. These signals are directly injected into the fault detection input port of the power distribution test module 2 through the output port of the simulated current generating module 1 to simulate the electrical faults that occur in actual operation. This process is a test of the system's fault response capability and can help identify weak links in the system. For example, if a module fails to respond in time or responds inconsistently with expectations when receiving a simulated short circuit signal, it indicates that the module has a design defect or needs further optimization.

[0053] S40, by monitoring the response of the power distribution test module 2 generated based on the simulated fault signal, and based on the trained test model, calculating the fault test result of the power distribution system.

[0054] In this embodiment, after the fault signal is injected, the system will monitor the response of each power distribution test module 2 in real time, including the response time, the accuracy of the response, and whether it meets the expected functional operation. The test model is trained based on a large amount of historical data and test results, and can accurately predict and calculate the performance of each module under different fault conditions. Through these data, the system can comprehensively evaluate the fault response capability of the entire power distribution system and determine the stability and reliability of the system. For example, during the monitoring process, if the response time of a module is significantly higher than the standard response time expected by the test model, this means that the processing capacity of the module is insufficient and needs further adjustment or upgrading.

[0055] Preferably, in the feeder automation complete test method, the electrical connection status data of each distribution test module 2 is first obtained. These data include the connection relationship between the modules, the functional attributes of each module, and the positional relationship of the modules. Based on these data, the topological structure of the series circuit of the distribution test module 2 is generated, and this topological structure can intuitively show the connection sequence and mutual relationship between the modules. On this basis, the position and function allocation of each module are further determined to provide a reliable basis for the injection and testing of simulated fault signals. These data can help the system accurately locate the fault point and guide subsequent fault simulation and test analysis.

[0056] In summary, the specific position and functional allocation of each power distribution test module 2 can be accurately located, thereby providing reliable basic data support for subsequent tests and fault simulations, thereby improving the accuracy of the test.

[0057] Specifically, Figure 3 As shown, the step of obtaining the electrical connection status data of each power distribution test module 2, i.e., step S10, includes: S101, determining one or more key units according to the power distribution test module 2; In this embodiment, during the testing process of the entire power distribution system, it is first necessary to identify the components or nodes in each power distribution test module 2 that are critical to system performance and safety. These components or nodes are called key units. Key units generally include circuit breakers, disconnectors, monitoring units 23, etc., which play a core role in the normal operation and fault protection of the system. The purpose of determining these key units is to monitor their working status first so that they can be quickly located and processed when a fault occurs. For example, if a circuit breaker is identified as a key unit, the system will focus on monitoring the switch status, current load condition, and response time of the circuit breaker to ensure that it can cut off the current in time when it is overloaded or short-circuited, protecting downstream equipment from damage.

[0058] S102, obtaining the working status data of the key units and the connection relationship data of each of the key units; In this embodiment, detailed data collection is performed on the determined key units. This includes the working status data of the key units in actual operation, such as current, voltage, temperature, switch status, etc. These data can reflect the working status and health status of the key units in real time to ensure that they are in the best operating state. At the same time, it is also necessary to obtain the connection relationship data between these key units and other units or modules to clarify their position and role in the entire power distribution system. Through this data collection method, the system can fully grasp the operating status of the key units, and can store and analyze these data for fault diagnosis and prevention. For example, if a key unit is a monitoring unit 23, it is necessary to obtain the connection relationship data between it and the circuit breaker and the isolating switch, as well as the real-time current monitoring data, to determine whether it can accurately detect current anomalies and trigger corresponding protection measures.

[0059] S103: Integrate the working status data and the connection relationship data to generate corresponding electrical connection status data.

[0060] In this embodiment, after obtaining the working status data and connection relationship data of the key units, the system needs to integrate these data to generate a comprehensive electrical connection status report. This status report not only includes the real-time working status of each key unit, but also reflects their electrical connection mode and interaction relationship in the system. By integrating these data, the system can generate an overall electrical connection status diagram, thereby providing an important reference basis for subsequent testing and fault diagnosis. For example, when the data of multiple key units of a power distribution test module 2 are integrated, if it is found that the current transfer between certain units is abnormal, the specific unit where the problem is located can be quickly located through the status diagram, and its relationship with other units can be analyzed, thereby effectively troubleshooting.

[0061] Preferably, when obtaining the electrical connection status data of each power distribution test module 2, it is first necessary to determine one or more key units, which play a core role in the test process. Therefore, the system will give priority to obtaining the working status data of these key units and the connection relationship data between them. By integrating these data, complete electrical connection status data is generated. The integrated data not only reflects the current working status of the system, but can also be used to predict potential fault points, providing solid data support for subsequent tests.

[0062] In summary, by determining one or more key units, the working status and connection relationship data of these key units can be obtained. By integrating these data, electrical connection status data can be generated comprehensively and accurately, thus providing a solid foundation for the simulation of the test loop and the accuracy of the test results, thereby improving the reliability of the test.

[0063] Specifically, Figure 4 As shown, the step of monitoring the response of the power distribution test module 2 generated based on the simulated fault signal and calculating the fault test result of the power distribution system based on the trained test model, i.e., step S40, includes: S401, determining a response unit of the power distribution test module 2 based on the simulated fault signal; In this embodiment, after the simulated fault signal is injected into the power distribution test module 2, the system first needs to identify which units will respond in this fault situation. These response units usually include key components such as circuit breakers, disconnectors, and monitoring units 23. Their function is to take quick action when a fault is detected, such as cutting off the current, sounding an alarm, or recording a fault. By determining these response units, the system can focus on monitoring their behavior and reactions to ensure that these units can work normally when an actual fault occurs. For example, when a simulated short-circuit signal is injected into the system, the expected response unit is the upstream circuit breaker, which should trip quickly after the short-circuit signal is triggered to prevent the fault current from damaging the equipment.

[0064] S402, monitoring the response status and unit type of each of the response units, wherein the response status at least includes a current response time; In this embodiment, after a fault occurs, the system will monitor the specific response of each response unit in detail, especially focusing on their response time, that is, the time from the fault signal triggering to the response unit taking action. These response conditions can reflect the health status and work efficiency of the unit. The unit type refers to the role or function of these response units in the system. For example, some units are mainly responsible for cutting off the current, while other units are responsible for signal monitoring or data recording. By monitoring these response conditions, the system can determine whether the performance of each unit in response to the fault is in line with expectations. For example, if a circuit breaker takes too long to respond after receiving a fault signal, it means that the circuit breaker is aging or faulty and needs to be repaired or replaced.

[0065] S403, determining a corresponding preset standard response time and a preset standard response range according to the unit type; In this embodiment, in order to effectively evaluate the performance of each response unit, the system sets a standard response time and response range according to the type of different units. These preset standards are usually based on historical data, technical parameters provided by the manufacturer, and system design requirements, reflecting the ideal response time and range of each unit under normal circumstances. The standard response time is a reference value used to measure the unit's ability to respond quickly, while the standard response range is a tolerance range that allows the unit's response to be considered qualified within a certain time difference. For example, for a highly sensitive circuit breaker, the standard response time is set to a few milliseconds, while for a unit that monitors signals, the response time will be longer.

[0066] S404: comparing the current response time with a preset standard response time using a threshold value to generate a response difference value of each of the response units; In this embodiment, in actual testing, the system will compare the current response time of each response unit with the previously set standard response time and calculate the response difference. The response difference refers to the difference between the current response time and the standard response time, and this difference can be used to evaluate the performance of the unit. If the response difference is small, it means that the response speed of the unit is close to the ideal state; if the response difference is large, it means that the response speed of the unit is not ideal and needs to be corrected or repaired. For example, if the standard response time of a circuit breaker is 10 milliseconds, and the response time measured in the test is 15 milliseconds, then the response difference is 5 milliseconds, which indicates that the circuit breaker needs further inspection.

[0067] S405, determining a target unit among the response units, and determining other response units associated with the target unit as associated units based on a preset standard response range of the target unit; In this embodiment, among all the response units, the system will select one or more as target units, usually these target units are units that show significant response differences in the test. Then, based on the preset standard response ranges of these target units, the system will further determine other response units associated with their functions. These associated units usually work in conjunction with the target unit in the system, or should have corresponding responses under the same fault conditions. By identifying these associated units, the system can analyze the entire fault event more comprehensively and find out the root cause of the fault. For example, if a circuit breaker is determined as a target unit, then the disconnector and monitoring unit 23 connected to it will be identified as associated units. These units together constitute a protection circuit, so their linkage response needs to be analyzed together.

[0068] S406, substituting the response difference between the target unit and the associated unit into the trained test model to calculate the response result, and then calculating the response results corresponding to other response units in turn; In this embodiment, the system inputs the response difference of the target unit and its associated units into a pre-trained test model. This model is developed based on a large amount of historical data and expert knowledge, and can analyze the input response difference and calculate the response results of each unit. These results not only show the performance of each unit in the fault event, but also predict the performance trend of these units in similar events in the future. Through this model calculation, the system can identify which units need to be optimized or replaced to improve the reliability of the overall system. For example, if the model calculates that the response results of a circuit breaker in multiple tests deviate from the standard range, the system will recommend further inspection or upgrade of the circuit breaker.

[0069] S407: Integrate the response results to generate a fault test result of the power distribution system.

[0070] In this embodiment, the system integrates the response results of all units to generate an overall distribution system fault test result. This result reflects the overall performance of the system under specific fault conditions and can provide important decision-making basis for system maintenance personnel. The integrated test results usually include indicators such as the response speed of the system, the health status of each key unit, and the fault tolerance of the system. Through these results, system maintenance personnel can fully understand the current system status, identify potential risks, and take preventive measures to ensure the stability and safety of the system in actual operation. For example, if the test results show that the distribution system in a certain area has a slow fault response, the maintenance personnel will consider adding additional protection equipment or upgrading existing equipment in the area to improve the fault response capability of the area.

[0071] Preferably, when monitoring the response of the power distribution test module 2 generated based on the simulated fault signal, the response unit in the power distribution test module 2 is first determined according to the simulated fault signal. The system monitors the response of these response units in real time, including parameters such as response time and response amplitude, and compares these data with the preset standard response time and standard response range. If it is found that the response time exceeds the preset threshold, the system will generate a response difference and further analyze the system based on this difference. This comparative analysis method can quickly discover abnormal responses and help the system accurately locate the fault point.

[0072] In summary, the response unit of the power distribution test module 2 can be accurately determined based on the simulated fault signal. By monitoring the response status and unit type of each response unit and comparing them with the preset standard, abnormal responses can be discovered in time and accurate fault test results can be calculated through the trained test model, thereby improving the efficiency and accuracy of system fault detection.

[0073] Specifically, Figure 5 As shown, the step of integrating the response results to generate a fault test result of the power distribution system, i.e., step S407, includes: S4071. Determine a corresponding status score according to the response result; In this embodiment, the system generates a status score based on the performance of each response unit in the fault test. The status score is a numerical indicator used to quantify the response performance of each unit. The score reflects the health of the unit, the speed of reaction, and the effectiveness under fault conditions. For example, if a circuit breaker can quickly and accurately cut off the fault current in multiple tests, it will get a higher status score; on the contrary, if a monitoring unit 23 frequently delays or fails to correctly detect the fault signal, its status score will be lower. Through this scoring mechanism, the system can quickly identify units with good performance and units with problems, and guide subsequent maintenance and optimization work.

[0074] S4072, determining a corresponding weighting coefficient according to the unit type; In this embodiment, since different types of units play different roles and importance in the power distribution system, the system assigns a weighting coefficient to them according to the type of unit. The weighting coefficient is a numerical value used to adjust the influence of the status score, so that certain key units have a greater weight in the overall score. For example, circuit breakers and disconnectors, as key components that directly affect the safety of the system, will be assigned a higher weighting coefficient; while the sensor units used for auxiliary monitoring, although their importance cannot be ignored, are assigned a relatively low weighting coefficient. This weighting mechanism ensures that in the final fault test results, the performance of the key units has a greater impact on the overall status of the system, thereby providing a more objective and comprehensive system health assessment.

[0075] S4073. Add the product of each of the state scores and the corresponding weighting coefficient to generate a fault test result of the power distribution system.

[0076] In this embodiment, the system multiplies the status score of each unit by its corresponding weighting coefficient, and then adds the weighted scores of all units to obtain a comprehensive fault test result. This result is a comprehensive evaluation of the performance of the entire distribution system under fault conditions, which can reflect the overall health of the system. Through this calculation method, the system can comprehensively consider the individual performance of each unit and its importance in the system, thereby generating a score that accurately reflects the current state of the system. For example, assuming that a key circuit breaker in the system has a high status score and a high weighting coefficient, while an auxiliary sensor has a low status score but a small weighting coefficient. After the scores of these two units are weighted and added, it is concluded that the system is still in a good state. This result can provide clear direction for system maintenance personnel to concentrate resources for optimization and maintenance where they are most needed.

[0077] Preferably, when integrating the response results of each response unit, the system first generates a status score based on each response result. The status score reflects the health status of the current system and can guide subsequent maintenance and optimization work. Depending on the type of response unit, the system will also assign different weighting coefficients, multiply these weighting coefficients with the corresponding status scores and add them up to generate the final fault test results of the distribution system. This weighted calculation method can more comprehensively and objectively evaluate the overall operating status of the system, providing important data support for system optimization and upgrading.

[0078] In summary, by determining the status score according to the response result and determining the weighting coefficient in combination with the unit type, the product of each status score and the corresponding weighting coefficient can be weighted averaged to generate the final fault test result of the distribution system. Through this weighted calculation method, the overall operating status of the distribution system can be fully and objectively reflected, thereby providing an important reference for the maintenance and optimization of the system and improving the comprehensiveness and accuracy of fault diagnosis.

[0079] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A complete set of feeder automation test equipment, characterized in that: The invention comprises a simulation current generating module (1) and a plurality of power distribution test modules (2), wherein the power distribution test module (2) comprises at least a first control unit (21), a second control unit (22) and a monitoring unit (23), wherein the second end of the first control unit (21) serves as the first main current port of the power distribution test module (2), and the second end of the second control unit (22) serves as the second main current port of the power distribution test module (2), the first main current generating port of the simulation current generating module (1) is connected to the first main current port of the power distribution test module (2), and the second main current port of the power distribution test module (2) is connected to the first main current port of another power distribution test module (2), until all the power distribution test modules (2) are connected in series, and the second main current port of the power distribution test module (2) at the end of the series connection is connected to the simulation current generating module (1). The first end of the monitoring unit (23) of each of the power distribution test modules (2) serves as a fault detection input port of the power distribution test module (2) to be connected to the analog fault signal output port of the analog current generating module (1); the second end of the monitoring unit (23) is connected to a common node between the first end of the first control unit (21) and the first end of the second control unit (22), and is further connected to the main current test circuit to form a monitoring circuit corresponding to the power distribution test module (2); the test module is used to simulate the current of the main current test circuit and the monitoring circuit, and then test the response capability of the power distribution system by acquiring the operating status of the first control unit (21), the second control unit (22) and the monitoring unit (23).

2. The feeder automatic test device according to claim 1, characterized in that: The first control unit (21) comprises at least one circuit breaker, which is located in the upstream circuit of the power distribution test module (2) and is used to detect and disconnect overload or short-circuit current.

3. The feeder automatic test device according to claim 2, characterized in that: The second control unit (22) comprises at least one isolating switch, which is located in the downstream circuit of the circuit breaker and is used for electrically isolating the circuit to be repaired after the circuit breaker cuts off the power supply.

4. The feeder automatic test device according to claim 1, characterized in that: The monitoring unit (23) comprises at least one current transformer for monitoring the current passing through the first control unit (21) and the second control unit (22).

5. The feeder automatic test device according to claim 1, characterized in that: The monitoring unit (23) comprises at least one fuse for redundantly protecting the second control unit (22).

6. The feeder automatic test device according to claim 1, characterized in that: The test module comprises a current generating device (11), a switch S01 and a switch S02; the first current generating end of the current generating device (11) is connected to the first end of the switch S01, the second end of the switch S01 serves as the first main current generating port of the simulated current generating module (1); the first current generating end of the current generating device (11) is connected to the first end of the switch S02, the second end of the switch S02 serves as the second main current generating port of the simulated current generating module (1); the third current generating end and the fourth current generating end of the current generating device (11) both serve as simulated fault signal output ports of the simulated current generating module (1).

7. A feeder automated test method, characterized in that: include: Acquire electrical connection status data of each power distribution test module, and generate a topological structure of a series circuit of the power distribution test module according to the electrical connection status data; According to the topological structure, at least determine the positional relationship and functional allocation of the power distribution test modules; Generate a simulated fault signal according to the positional relationship and the functional allocation, and inject the simulated fault signal into the fault detection input port of the power distribution test module through the simulated current generation module; By monitoring the response of the power distribution test module generated based on the simulated fault signal and based on the trained test model, the fault test result of the power distribution system is calculated.

8. A feeder automated complete test method according to claim 7, characterized in that: The step of obtaining the electrical connection status data of each power distribution test module includes: According to the power distribution test module, one or more key units are identified; Acquire the working status data of the key units and the connection relationship data of each of the key units; The working status data and the connection relationship data are integrated to generate corresponding electrical connection status data.

9. A feeder automated complete test method according to claim 8, characterized in that: The step of monitoring the response of the power distribution test module generated based on the simulated fault signal and calculating the fault test result of the power distribution system based on the trained test model includes: Based on the simulated fault signal, determining a response unit of the power distribution test module; Monitoring the response status and unit type of each of the response units, wherein the response status at least includes a current response time; Determine the corresponding preset standard response time and preset standard response range according to the unit type; The threshold value compares the current response time with the preset standard response time to generate a response difference value of each of the response units; Determine a target unit among the response units, and determine other response units associated with the target unit as associated units based on a preset standard response range of the target unit; Substituting the response difference between the target unit and the associated unit into the trained test model to calculate the response result, and then calculating the response results corresponding to other response units in turn; The response results are integrated to generate a fault test result of the power distribution system.

10. A feeder automated complete test method according to claim 9, characterized in that: The step of integrating the response results to generate a fault test result of the power distribution system includes: Determine a corresponding status score according to the response result; According to the unit type, determining a corresponding weighting coefficient; The products of each of the state scores and the corresponding weighting coefficients are added together to generate a fault test result of the power distribution system.

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