A distribution network terminal testing system and method based on channel switching

Abstract

The present invention discloses a distribution network terminal test system and method based on channel switching, comprising: a signal source module 100; an automatic switching module 200, an input end of which is electrically connected to the signal source module 100, and an output end of which is electrically connected to the distribution network terminal 300; a control module 400, which is communicatively connected to the signal source module 100 and the automatic switching module 200; a test result acquisition module 500, which is electrically connected to the distribution network terminal 300; and a result verification module 600, which is electrically connected to the control module 400 and the test result acquisition module 500, respectively. The present invention effectively improves the test efficiency for different signal types, does not require manual configuration of test channels, and after the test is completed, the test process of the distribution network terminal is verified by the result verification module to generate a verification result, and the test result and the verification result are compared by the control module, so that the test process is compared and the accuracy of the test result is improved.

Description

Technical Field

[0001] The technical field to which the present invention relates is the technical field of electric power equipment, and in particular to a distribution network terminal testing system and method based on channel switching. Background Art

[0002] With the development of economy and technology and the improvement of people's living standards, electric energy has become an indispensable secondary energy source in people's production and life. Therefore, the stable and reliable operation of the power system has become one of the most important tasks of the power system. With the continuous growth of electricity demand, distribution companies need to expand the distribution network in time and maintain the safe operation of the distribution system. Therefore, it is necessary to test the distribution network related equipment regularly.

[0003] Currently, when testing distribution network terminals, it is impossible to select different output channels according to different signal sources, resulting in the need for manual channel configuration during each test process, which affects test efficiency. In addition, there is a problem that the test results cannot be verified, affecting the accuracy of the test results. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above existing problems, the present invention is proposed.

[0006] Therefore, the present invention provides a distribution network terminal testing system and method based on channel switching, which can quickly switch test channels for different signal sources and effectively improve test efficiency.

[0007] In order to solve the above technical problems, the present invention provides the following technical solutions, including:

[0008] A signal source module is used to provide a signal source for testing the distribution network terminal;

[0009] An automatic switching module, whose input end is electrically connected to the signal source module, and whose output end is electrically connected to the distribution network terminal, for outputting the signal source to the distribution network terminal through different channels;

[0010] A control module, which is in communication with the signal source module and the automatic switching module, and is used to obtain signal source information of the signal source module, and output control information according to the signal source information to switch the channels of the automatic switching module;

[0011] A test result acquisition module, electrically connected to the distribution network terminal, for acquiring test results;

[0012] The result verification module is electrically connected to the control module and the test result acquisition module respectively, and is used to verify the test process of the distribution network terminal to generate a verification result, and compare the test result with the verification result through the control module.

[0013] As a preferred solution of the distribution network terminal test system based on channel switching described in the present invention, wherein: the automatic switching module includes a signal output unit and a switching unit, the signal output unit includes an electromagnetic voltage channel, an electromagnetic current channel, an electronic voltage channel and an electronic current channel; the input end of the switching unit is communicatively connected to the control module, and the output end of the switching unit is electrically connected to the electromagnetic voltage channel, the electromagnetic current channel, the electronic voltage channel and the electronic current channel, respectively, for switching the signal source to the corresponding channel according to the signal source information; and the electromagnetic voltage channel, the electromagnetic current channel, the electronic voltage channel and the electronic current channel are all four-way, all electrically connected to the distribution network terminal.

[0014] As a preferred solution of the distribution network terminal test system based on channel switching described in the present invention, wherein: the automatic switching module also includes a signal acquisition unit, the signal acquisition unit is electrically connected to the switching unit, and is used to collect the signal source flowing out of the switching unit in real time and package it to generate a data packet, and the output end of the signal acquisition unit is electrically connected to the control module, and is used to output the data packet generated by the collected signal source to the control module.

[0015] As a preferred solution of the distribution network terminal test system based on channel switching described in the present invention, the signal acquisition unit includes a first acquisition module and a second acquisition module, the first acquisition module is used to collect electromagnetic voltage and current signals, and the second acquisition module is used to collect electronic voltage and power signals.

[0016] As a preferred solution of the distribution network terminal test system based on channel switching described in the present invention, wherein: the result verification module includes a configuration unit, a management upload unit, a server unit and an algorithm analysis unit, the configuration unit is electrically connected to the distribution network terminal, and is used to collect signals in the distribution network terminal during the test and generate a corresponding combination file; the management upload unit is electrically connected to the server unit, and is used to compress and package the combination file to generate a compressed file and then upload it to the server unit, the server unit is used to store the compressed file and upload it to the algorithm analysis unit, the algorithm analysis unit is communicatively connected to the control module, the control module sends the signal source information of the signal source module to the algorithm analysis unit, and the algorithm analysis unit performs fault analysis on the distribution network terminal based on the fault location algorithm, combined with the compressed file and the signal source information.

[0017] As a preferred solution of the distribution network terminal test system based on channel switching described in the present invention, wherein: the combined file includes a recording file, a topology file and a configuration file.

[0018] As a preferred solution of the distribution network terminal test system based on channel switching described in the present invention, wherein: the algorithm analysis unit performs waveform analysis on the fault of the distribution network terminal to obtain a verification result, and sends the verification result to the server unit in xml format or json format, and the control module obtains the verification result and the test result respectively and performs test result verification.

[0019] As a preferred solution of the distribution network terminal testing system based on channel switching described in the present invention, wherein: the control module also includes a neural network unit, the neural network unit is trained based on the verification results and the test results to generate a training model, and in the subsequent testing process, the test results of the distribution network terminal are verified according to the training model.

[0020] As a preferred solution of the distribution network terminal testing method based on channel switching described in the present invention, wherein: the control module obtains the signal source information output by the signal source module;

[0021] Based on the signal source information, the control module outputs control information to switch the channel of the automatic switching module;

[0022] After switching channels, the automatic switching module outputs the signal output by the signal source module to the distribution network terminal for testing;

[0023] The test result acquisition module acquires the test result of the distribution network terminal;

[0024] The result verification module verifies the test process of the distribution network terminal and generates verification results;

[0025] The control module compares and analyzes the test result and the verification result.

[0026] As a preferred solution of the distribution network terminal testing method based on channel switching described in the present invention, wherein: when the test result is consistent with the verification result, it is determined that the test result is correct and the test process is completed;

[0027] When the test result is inconsistent with the verification result, the distribution network terminal is tested again by inputting a different signal source.

[0028] The beneficial effects of the present invention are as follows: during the test of the distribution network terminal, the present invention provides different signals, including electromagnetic signals and electronic signals, through the signal source module; after the control module obtains the signal source information of the signal source module, the control information is sent to the designated switching module, so that the designated switching module can quickly switch to the corresponding output channel to quickly transmit the signal output by the signal source module to the distribution network terminal, thereby effectively improving the test efficiency for different signal types without the need to manually configure the test channel; and after the test is completed, the test process of the distribution network terminal is verified by the result verification module to generate a verification result, and the test result and the verification result are compared by the control module, which facilitates the comparison of the test process and improves the accuracy of the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0030] Figure 1 A structural block diagram of a distribution network terminal test system based on channel switching according to the first embodiment of the present invention;

[0031] Figure 2 A channel schematic diagram of a signal output unit in a distribution network terminal test system based on channel switching according to the first embodiment of the present invention;

[0032] Figure 3 It is a structural block diagram of a result verification module in a distribution network terminal test system based on channel switching according to the first embodiment of the present invention;

[0033] Figure 4 This is a flow chart of a distribution network terminal testing method based on channel switching according to the first embodiment of the present invention. DETAILED DESCRIPTION

[0034] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0035] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0036] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0037] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0038] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0040] Example 1

[0041] Reference Figure 1-4, is the first embodiment of the present invention, which provides a distribution network terminal test system and method based on channel switching, including: a signal source module 100, used to provide a signal source for testing a distribution network terminal 300; an automatic switching module 200, whose input end is electrically connected to the signal source module 100, and whose output end is electrically connected to the distribution network terminal 300, and is used to output the signal source to the distribution network terminal 300 through different channels; a control module 400, which is communicatively connected to the signal source module 100 and the automatic switching module 200, and is used to obtain signal source information of the signal source module 100, and output control information according to the signal source information to switch the channel of the automatic switching module 200; a test result acquisition module 500, which is electrically connected to the distribution network terminal 300, and is used to obtain test results; a result verification module 600, which is electrically connected to the control module 400 and the test result acquisition module 500, respectively, and is used to verify the test process of the distribution network terminal 300 to generate a verification result, and compare the test result with the verification result through the control module 400.

[0042] It should be noted that, in the process of testing the distribution network terminal 300, sometimes different signal sources need to be input for testing, and the signal source information is obtained through the control module 400, so that the output channel of the automatic switching module 200 can be switched through the control module 400, thereby facilitating the entire test system to realize automatic switching of the test channel of the distribution network terminal 300, without the need for manual channel switching, and effectively improving the test efficiency. On the other hand, in the process of testing, the test result is obtained through the test result acquisition module 500, and the test process of the distribution network terminal 300 is verified and the verification result is generated by the result verification module 600, and the test result and the verification result are compared through the control module 400 to verify the accuracy of the test result of the distribution network terminal 300.

[0043] Furthermore, the automatic switching module 200 includes a signal output unit 210 and a switching unit 220, the signal output unit 210 includes an electromagnetic voltage channel 211, an electromagnetic current channel 212, an electronic voltage channel 213 and an electronic current channel 214; the input end of the switching unit 220 is communicatively connected to the control module 400, and the output end of the switching unit 220 is electrically connected to the electromagnetic voltage channel 211, the electromagnetic current channel 212, the electronic voltage channel 213 and the electronic current channel 214, respectively, for switching the signal source to the corresponding channel according to the signal source information; and the electromagnetic voltage channel 211, the electromagnetic current channel 212, the electronic voltage channel 213 and the electronic current channel 214 are all four-way, and are all electrically connected to the distribution network terminal 300.

[0044] Specifically, electromagnetic voltage and current signals are output through the electromagnetic voltage channel 211 and the electromagnetic current channel 212, and electronic voltage and current signals are output through the electronic voltage channel 213 and the electronic current channel 214. When the control module 400 determines that the signal source module 100 outputs an electromagnetic signal according to the signal source information, the output channel of the signal output unit 210 is switched to the electromagnetic voltage channel 211 and the electromagnetic current channel 212 for output through the switching unit 220; when the control module 400 determines that the signal source module 100 outputs an electronic signal according to the signal source information, the output channel of the signal output unit 210 is switched to the electronic voltage channel 213 and the electronic current channel 214 for output through the switching unit 220; when only the zero-sequence voltage outputs an electronic signal and other phase sequences output electromagnetic signals, only the zero-sequence voltage is switched to the electronic channel, and the others remain as electromagnetic channels.

[0045] It should be noted that the electromagnetic voltage channel 211, the electromagnetic current channel 212, the electronic voltage channel 213 and the electronic current channel 214 respectively use a power source with 16 output channels of two signal types, namely 4 electromagnetic voltages, 4 electromagnetic currents, 4 small signal voltages and 4 small signal currents, to output 450V electromagnetic voltage, 40A electromagnetic current and 20V small signal voltage, achieving full-scale 0.05 level accuracy output, so as to cooperate with the signal source module 100 to realize the detection requirements of distribution terminals of different signal types.

[0046] Furthermore, the automatic switching module 200 also includes a signal acquisition unit 230, which is electrically connected to the switching unit 220, and is used to collect the signal source flowing out of the switching unit 220 in real time and package it to generate a data packet, and the output end of the signal acquisition unit 230 is electrically connected to the control module 400, and is used to output the data packet generated by the collected signal source to the control module 400.

[0047] It should be noted that the signal source switched by the switching unit 220 is detected by the signal acquisition unit 230 so as to realize synchronous acquisition of different types of signals.

[0048] Furthermore, the signal acquisition unit 230 includes a first acquisition module 231 and a second acquisition module 232 . The first acquisition module 231 is used to acquire electromagnetic voltage and current signals, and the second acquisition module 232 is used to acquire electronic voltage and power signals.

[0049] It should be noted that the first acquisition module 231 and the second acquisition module 232 respectively use a recorder with separate electromagnetic and electronic large and small signal measurement channels, and have two sets of independent acquisition circuits built in, one of which can perform a recording test on electromagnetic voltage and current signals, and the other can perform a recording test on small signal voltage and current signals, which can meet the test of large signals, small signals, and mixed signals in the primary and secondary fusion stages. Corresponding to the signal output unit 210, each acquisition circuit can simultaneously realize the synchronous acquisition of 4 voltages, 4 currents, and 8 switching quantities. During the test process, short-term recording can be performed by triggering, and voltage, current, and switching quantity waveforms can be recorded for a long time in all channels under high sampling rate conditions.

[0050] Furthermore, the result verification module 600 includes a configuration unit 610, a management upload unit 620, a server unit 630 and an algorithm analysis unit 640. The configuration unit 610 is electrically connected to the distribution network terminal 300, and is used to collect signals in the distribution network terminal 300 during the test and generate a corresponding combination file; the management upload unit 620 is electrically connected to the server unit 630, and is used to compress and package the combination file to generate a compressed file and then upload it to the server unit 630. The server unit 630 is used to store the compressed file and upload it to the algorithm analysis unit 640. The algorithm analysis unit 640 is communicatively connected to the control module 400, and the control module 400 sends the signal source information of the signal source module 100 to the algorithm analysis unit 640. The algorithm analysis unit 640 performs fault analysis on the distribution network terminal 300 based on the fault location algorithm and in combination with the compressed file and the signal source information. The algorithm analysis unit 640 performs waveform analysis on the fault of the distribution network terminal 300 to obtain a verification result, and sends the verification result to the server unit 630 in XML format or JSON format. The control module 400 obtains the verification result and the test result respectively and performs test result verification.

[0051] Specifically, the result verification module 600 provides an interactive interface for a single-phase grounding fault location algorithm, which can realize functional verification of the single-phase grounding fault location algorithm under different working conditions of the distribution network.

[0052] Furthermore, the control module 400 also includes a neural network unit, which is trained based on the verification results and the test results to generate a training model, and in the subsequent testing process, the test results of the distribution network terminal 300 are verified according to the training model.

[0053] It should be noted that making full use of the data from the test results and verification results to train the neural network unit and obtain a neural network model that meets the current test environment will help provide a reliable basis for comparing the test results and verification results in the subsequent testing process.

[0054] Example 2

[0055] In order to verify and illustrate the system and method used in the present invention, this embodiment selects a traditional system and method and the present invention for comparative testing, and compares the test results by means of scientific demonstration to verify the real effect of the present invention.

[0056] This embodiment uses traditional testing equipment to test the distribution network terminal, and the error ratio between the actual value and the set value of the voltage data and current data of the distribution network terminal is about 0.5%, and the error ratio between the actual value and the set value of the measured signal source power data is about 1%. During the test process of the test system of the present invention, the error ratio between the actual value and the set value of the voltage data and current data is about 0.05%, and the error ratio between the actual value and the set value of the measured signal source power data is about 0.1%. It can be seen that the test system of this solution can significantly improve the accuracy of the test results of various data.

[0057] Taking the test process of two distribution network terminals as an example, under the condition that the voltage setting values ​​of the electromagnetic voltage channel and the electronic voltage channel are both 20V, and the current setting values ​​of the electromagnetic current channel and the electronic current channel are both 1A, the test system of the present invention is used to perform tests respectively, and the error ratios of the voltage data of the electromagnetic voltage channels of the two distribution network terminals are 0.02% and 0.07%, the error ratios of the voltage data of the electronic voltage channels are 0.04% and 0.05%, the error ratios of the current data of the electromagnetic current channels are 0.03% and 0.06%, and the error ratios of the current data of the electronic current channels are 0.04% and 0.06%, which are obviously lower than the error ratios of the prior art.

[0058] On the other hand, the accuracy of traditional fault testing of distribution network terminals in the prior art is generally around 50%, while the test system of the present invention is used to perform fault testing on distribution network terminals, and the accuracy of fault testing for distribution network terminals reaches 80%, which significantly improves the accuracy of fault testing.

[0059] It can be seen from the experimental data that the system and method proposed in the present invention have superior performance in various performance indicators compared with the current systems and methods.

[0060] It should be appreciated that embodiments of the present invention may be implemented or enforced by computer hardware, a combination of hardware and software, or by computer instructions stored in a non-transitory computer-readable memory. The method may be implemented in a computer program using standard programming techniques - including a non-transitory computer-readable storage medium configured with a computer program, wherein the storage medium so configured causes the computer to operate in a specific and predefined manner - according to the methods and drawings described in the specific embodiments. Each program may be implemented in a high-level procedural or object-oriented programming language to communicate with a computer system. However, if desired, the program may be implemented in an assembly or machine language. In any case, the language may be a compiled or interpreted language. In addition, the program may be run on a programmed ASIC for this purpose.

[0061] Furthermore, the operations of the processes described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The processes described herein (or variations and / or combinations thereof) may be performed under the control of one or more computer systems configured with executable instructions, and may be implemented as code (e.g., executable instructions, one or more computer programs, or one or more applications) that is executed collectively on one or more processors, by hardware, or a combination thereof. The computer program includes a plurality of instructions that may be executed by one or more processors.

[0062] Further, the method can be implemented in any type of computing platform that is operably connected to a suitable computer, including but not limited to a personal computer, a minicomputer, a mainframe, a workstation, a network or distributed computing environment, a separate or integrated computer platform, or in communication with a charged particle tool or other imaging device, etc. Aspects of the present invention can be implemented in machine-readable code stored on a non-transitory storage medium or device, whether removable or integrated into a computing platform, such as a hard disk, an optical read and / or write storage medium, a RAM, a ROM, etc., so that it can be read by a programmable computer, and when the storage medium or device is read by the computer, it can be used to configure and operate the computer to perform the process described herein. In addition, the machine-readable code, or part thereof, can be transmitted via a wired or wireless network. When such media includes instructions or programs that implement the steps described above in conjunction with a microprocessor or other data processor, the invention described herein includes these and other different types of non-transitory computer-readable storage media. When programmed according to the methods and techniques described in the present invention, the present invention also includes the computer itself. The computer program can be applied to input data to perform the functions described herein, thereby converting the input data to generate output data stored in a non-volatile memory. The output information can also be applied to one or more output devices such as a display. In a preferred embodiment of the present invention, the converted data represents a physical and tangible object, including a specific visual depiction of the physical and tangible object produced on a display.

[0063] As used in this application, the terms "component", "module", "system", etc. are intended to refer to a computer-related entity, which can be hardware, firmware, a combination of hardware and software, software, or software in operation. For example, a component can be, but is not limited to: a process running on a processor, a processor, an object, an executable file, a thread in execution, a program, and / or a computer. As an example, an application running on a computing device and the computing device can both be components. One or more components can exist in a process and / or thread in execution, and a component can be located in a computer and / or distributed between two or more computers. In addition, these components can be executed from various computer-readable media having various data structures thereon. These components can communicate in a local and / or remote process manner, such as according to a signal having one or more data packets (e.g., data from a component that interacts with another component in a local system, a distributed system, and / or interacts with other systems in a signal manner through a network such as the Internet).

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A distribution network terminal test system based on channel switching, characterized in that: include: A signal source module (100) is used to provide a signal source for testing a distribution network terminal (300); An automatic switching module (200), whose input end is electrically connected to the signal source module (100) and whose output end is electrically connected to the power distribution network terminal (300), and is used to output the signal source to the power distribution network terminal (300) through different channels; A control module (400) is connected in communication with the signal source module (100) and the automatic switching module (200), and is used to obtain signal source information of the signal source module (100), and output control information according to the signal source information to control the switching of channels of the automatic switching module (200); A test result acquisition module (500), electrically connected to the distribution network terminal (300), and used to acquire the test result; A result verification module (600) is electrically connected to the control module (400) and the test result acquisition module (500), respectively, and is used to verify the test process of the distribution network terminal (300) to generate a verification result, and compare the test result with the verification result through the control module (400); The automatic switching module (200) comprises a signal output unit (210) and a switching unit (220); the signal output unit (210) comprises an electromagnetic voltage channel (211), an electromagnetic current channel (212), an electronic voltage channel (213) and an electronic current channel (214); The input end of the switching unit (220) is communicatively connected to the control module (400), and the output end of the switching unit (220) is electrically connected to the electromagnetic voltage channel (211), the electromagnetic current channel (212), the electronic voltage channel (213), and the electronic current channel (214), respectively, for switching the signal source to a corresponding channel according to the signal source information; The electromagnetic voltage channel (211), the electromagnetic current channel (212), the electronic voltage channel (213) and the electronic current channel (214) are all four channels, and are all electrically connected to the power distribution network terminal (300); The automatic switching module (200) further comprises a signal acquisition unit (230), the signal acquisition unit (230) being electrically connected to the switching unit (220) and used for real-time acquisition of the signal source flowing out of the switching unit (220) and packaging to generate a data packet, and the output end of the signal acquisition unit (230) being electrically connected to the control module (400) and used for outputting the data packet generated by the acquired signal source to the control module (400); The result verification module (600) comprises a configuration unit (610), a management upload unit (620), a server unit (630) and an algorithm analysis unit (640); the configuration unit (610) is electrically connected to the distribution network terminal (300) and is used to collect signals in the distribution network terminal (300) during the test and generate a corresponding combination file; The management upload unit (620) is electrically connected to the server unit (630) and is used to compress and package the combined file to generate a compressed file and then upload it to the server unit (630). The server unit (630) is used to store the compressed file and upload it to the algorithm analysis unit (640). The algorithm analysis unit (640) is in communication connection with the control module (400), the control module (400) sends the signal source information of the signal source module (100) to the algorithm analysis unit (640), and the algorithm analysis unit (640) performs fault analysis on the distribution network terminal (300) based on the fault location algorithm, in combination with the compressed file and the signal source information; The control module (400) also includes a neural network unit, which is trained based on the verification result and the test result to generate a training model, and in a subsequent test process, the test result of the distribution network terminal (300) is verified according to the training model.

2. The distribution network terminal test system based on channel switching according to claim 1, characterized in that: include: The signal acquisition unit (230) comprises a first acquisition module (231) and a second acquisition module (232); the first acquisition module (231) is used to acquire electromagnetic voltage and current signals, and the second acquisition module (232) is used to acquire electronic voltage and power signals.

3. The distribution network terminal test system based on channel switching according to claim 2, characterized in that: include: The combined file includes a wave recording file, a topology file and a configuration file.

4. The distribution network terminal test system based on channel switching according to claim 3, characterized in that: include: The algorithm analysis unit (640) performs waveform analysis on the fault of the distribution network terminal (300) to obtain a verification result, and sends the verification result to the server unit (630) in an XML format or a JSON format. The control module (400) respectively obtains the verification result and the test result and performs test result verification.

5. A distribution network terminal testing method based on channel switching, characterized in that: include: The control module (400) obtains the signal source information output by the signal source module (100); Based on the signal source information, the control module (400) outputs control information to switch the channel of the automatic switching module (200); After the channel is switched, the automatic switching module (200) outputs the signal output by the signal source module (100) to the distribution network terminal (300) for testing; The test result acquisition module (500) acquires the test result of the distribution network terminal (300); The result verification module (600) verifies the test process of the distribution network terminal (300) and generates a verification result; The control module (400) compares and analyzes the test result and the verification result.

6. The distribution network terminal testing method based on channel switching according to claim 5, characterized in that: include: When the test result is consistent with the verification result, determining that the test result is correct and completing the test process; When the test result is inconsistent with the verification result, the distribution network terminal (300) is tested again by inputting a different signal source.

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