A method, equipment and system for testing transformer area identification devices

Abstract

This invention discloses a method, device, and system for testing a transformer substation identification device, comprising: receiving and identifying a test command; extracting a target test task from the test command; determining whether an interference test task and / or a sampling test task exist; if so, selecting an interference signal source according to the interference test task and performing an interference test on the transformer substation identification device to obtain a first test result; and / or, sampling the characteristic current signal transmitted by the transmitting end according to the type of the sampling test task to obtain a second test result; if not, controlling the transmitting end to periodically transmit a preset number of characteristic current signals, sampling the signals periodically identified by the receiving end, and generating a third test result. This method standardizes and automates the testing process / content of transformer substation topology identification function based on characteristic current, saving manpower and time costs, avoiding human testing deviations caused by misunderstanding, and providing a foundation for accurate identification of transformer substation characteristic currents.

Description

Technical Field

[0001] This invention relates to the field of transformer area identification technology, and in particular to a transformer area identification instrument testing method, equipment and system. Background Technology

[0002] Existing low-voltage distribution substations mostly employ substation identification technology based on characteristic current to identify substation topology. For example... Figure 1 The physical layer architecture diagram of the transformer topology identification technology is shown: Transmitter: The transmitting device generates a characteristic current signal and feeds it to the power line through a predetermined modulation method. (Upper part of the diagram) Identifier: The identification device detects the characteristic current signal through a current transformer (CT), performs corresponding demodulation processing, and finally restores the characteristic current signal on the power line into decoded data information, and performs logical judgment. (Lower part of the diagram) Its modulation method uses OOK modulation to represent the presence or absence of the fixed-width characteristic current as "1" and "0" of the digital signal. The modulation carrier frequency f1 is the switching frequency for transmitting the characteristic signal. After modulation, the original information is represented by the signal m(t):

[0003]

[0004] Where A represents the characteristic current amplitude, and DUTY represents the duty cycle of the characteristic signal; the modulation process is as follows: Figure 2 As shown, the modulation carrier frequency is f1, and the duration of each bit is the set bit width time. If the bit is 1, frequency f1 is used for switching during that bit duration; if the bit is 0, no switching occurs. An example modulation implementation is shown below. Figure 3 As shown, the default modulation carrier frequency is f1 = 833.3Hz, and each bit lasts for 0.6s. If the bit is 1, switching is performed using the frequency 833.3Hz during that bit's duration; if the bit is 0, no switching occurs. Currently, there are many patents for topology identification methods and corresponding transformer area identification devices. However, there is a lack of testing and evaluation methods to assess the effectiveness of topology identification. Furthermore, existing publicly known technical specifications in this field, such as the "Technical Specification for Transformer Area Identification Based on Characteristic Current" (a standard led by the State Grid Corporation of China), only outline the technical requirements for transformer area identification technology and do not cover specific testing systems and methods for transformer area identification device performance. In practical applications, the performance of the transformer area identification device directly affects the identification results. Therefore, there is an urgent need for a testing technique to evaluate the effectiveness of transformer area identification devices based on characteristic current. Summary of the Invention

[0005] In view of this, the present invention proposes a method, device, and system for testing a transformer area identification device, to solve the problem that the existing technology lacks a technique for performance testing of transformer area identification devices. To achieve one, some, or all of the above objectives, or other objectives, the present invention proposes a method for testing a transformer area identification device, wherein the transformer area identification device includes: a transmitting end and a receiving end; the method includes:

[0006] The system receives and identifies test instructions, extracts target test tasks from the test instructions, determines whether there are interference test tasks and / or sampling test tasks among the extracted target test tasks, selects an interference signal source according to the interference test task, performs interference testing on the substation identification instrument based on the selected interference signal source, and obtains a first test result; and / or, performs state sampling on the characteristic current signal sent by the transmitting end according to the type of sampling test task, and obtains a second test result based on the sampling result.

[0007] If not, the transmitting end is controlled to periodically send a preset number of characteristic current signals, and the topology identification signal obtained by the receiving end is sampled, and a third test result is generated based on the sampling result.

[0008] According to a specific implementation, in the above-mentioned method for testing the transformer area identification device, the step of performing an interference test on the transformer area identification device based on the selected interference signal includes:

[0009] S1. Control the transmitting end to send a characteristic current signal, and inject an interference signal into the characteristic current signal;

[0010] S2. Obtain the topology identification signal generated by the receiver relative to the interference signal, determine whether the topology identification signal is normal, if so, increase the amplitude of the initial interference signal according to a preset ratio, return to S1, and repeat until the receiver can no longer generate a normal topology identification signal to obtain the interference test result.

[0011] According to a specific implementation method, in the above-mentioned transformer area identification tester test method, the interference test task is one or more combinations of power frequency interference test, same frequency interference test, and out-of-band interference test;

[0012] The interference signal sources include: power frequency interference signals, co-frequency interference signals, and out-of-band interference signals;

[0013] The out-of-band interference signal has a different frequency than the characteristic current signal.

[0014] According to a specific implementation method, in the above-mentioned transformer area identification instrument test method, the sampling test task is: amplitude-frequency sampling test, and / or harmonic current sampling test.

[0015] According to a specific implementation, in the above-mentioned transformer area identification device testing method, obtaining the second test result based on the sampling result includes:

[0016] The obtained amplitude-frequency and / or harmonic current values ​​are compared with their corresponding target ranges, and the amplitude-frequency and / or harmonic current test results are generated based on the comparison results.

[0017] According to a specific implementation, in the above-mentioned transformer area identification tester method, the step of sampling the topology identification signal obtained by the periodic identification at the receiving end and generating a third test result based on the sampling result includes:

[0018] The topology identification signal obtained by the periodic identification at the receiving end is acquired. The acquired topology identification signal is compared with the corresponding periodic characteristic current signal at the transmitting end. The signal identification success rate is calculated based on the comparison result to obtain the third test result.

[0019] In another aspect, the present invention provides an electronic device including at least one processor and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, the instructions being executed by the at least one processor to enable the at least one processor to perform the above-described station identification test method.

[0020] In another aspect, the present invention provides a testing system for a transformer area identification device, the transformer area identification device comprising: a transmitting end and a receiving end; characterized in that: the system comprises: an electronic device, an interference signal generator, and a monitoring device;

[0021] One end of the interference signal generator is connected to the electronic device, and the other end is connected to the link between the transmitting end and the receiving end. One end of the monitoring device is connected to the electronic device, and the other end is connected to the link between the transmitting end and the receiving end. The electronic device is communicatively connected to the transmitting end and the receiving end of the station identification instrument.

[0022] The electronic device is used to receive and identify test instructions, extract target test tasks from the test instructions, determine whether there are interference test tasks and / or sampling test tasks among the extracted target test tasks, and if so, control the interference signal generator to select an interference signal source according to the type of the current interference test, and perform interference test on the substation identification instrument based on the selected interference signal source to obtain a first test result; and / or, perform state sampling on the characteristic current signal sent by the transmitting end according to the type of sampling test task, and obtain a second test result based on the sampling result; if not, control the transmitting end to periodically send a preset number of characteristic current signals, sample the topology identification signal periodically identified by the receiving end, and generate a third test result based on the sampling result.

[0023] According to one specific implementation, in the above-mentioned transformer area identification test system, the monitoring device includes: an oscilloscope and a current probe.

[0024] According to one specific implementation, the above-mentioned transformer area identification test system further includes a power supply, which is used to power the electronic equipment, the interference signal generator, and the monitoring device.

[0025] Implementing the embodiments of the present invention will have the following beneficial effects:

[0026] The transformer area identification instrument testing method provided in this embodiment of the invention automatically identifies test instructions, extracts target test tasks, and, when interference test tasks and / or sampling test tasks exist in the target test tasks, completes the corresponding interference test and / or sampling test according to the task type. When there are no interference test tasks and / or sampling test tasks in the target test tasks, it directly samples the periodically transmitted and received signals from the transmitting and receiving ends to generate corresponding test results, thereby completing the automatic testing of the transformer area identification instrument. The testing method provided in this embodiment of the invention has a high degree of automation, saves manpower and time costs, and provides a foundation for the accurate identification of transformer area characteristic currents. At the same time, this method standardizes the test process (test content) of transformer area topology identification function based on characteristic currents, avoiding human test deviations caused by misunderstanding. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] in:

[0029] Figure 1 This is a schematic diagram of the physical layer architecture of the transformer area identification technology based on characteristic current in the background technology.

[0030] Figure 2 This is a schematic diagram of the OOK modulation process based on characteristic current in the background technology;

[0031] Figure 3 This is a schematic diagram of the OOK modulation result based on characteristic current in the background technology;

[0032] Figure 4 This is a schematic diagram of a test method for a substation identification device in one embodiment;

[0033] Figure 5This is a schematic diagram showing the connection between the transformer area identification test system and the transformer area identification device in one embodiment.

[0034] Figure 6 This is a block diagram of an electronic device structure in one embodiment. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1

[0037] Figure 4 An exemplary embodiment of the present invention is shown, which describes a method for testing a transformer area identifier, applied to a transformer area identifier testing system. The transformer area identifier includes a transmitter and a receiver; the method includes:

[0038] The system receives and identifies test instructions, extracts target test tasks from the test instructions, determines whether there are interference test tasks and / or sampling test tasks among the extracted target test tasks, selects an interference signal source according to the interference test task, performs interference testing on the substation identification instrument based on the selected interference signal source, and obtains a first test result; and / or, performs state sampling on the characteristic current signal sent by the transmitting end according to the type of sampling test task, and obtains a second test result based on the sampling result.

[0039] If not, the transmitting end is controlled to periodically send a preset number of characteristic current signals, and the topology identification signal obtained by the receiving end is sampled, and a third test result is generated based on the sampling result.

[0040] In this embodiment, by automatically identifying test instructions and extracting target test tasks, and when interference test tasks and / or sampling test tasks exist in the target test tasks, corresponding interference tests and / or sampling tests are completed according to the task type. When there are no interference test tasks and / or sampling test tasks in the target test tasks, the periodically transmitted and received signals of the transmitting and receiving ends are directly sampled to generate corresponding test results, thereby completing the automatic testing of the transformer area identification device. The test method provided by this embodiment standardizes the test process (test content and test standards) of transformer area topology identification function based on characteristic current, avoiding human test deviations caused by misunderstanding. Based on the test system, the test method is coded, and the test system can automatically complete all test tasks in a preset order. The corresponding system has a high degree of automation, saves manpower and time costs, and provides a foundation for the accurate identification of transformer area characteristic current.

[0041] Example 2

[0042] In one possible implementation, the sampling test task is: amplitude-frequency sampling test, and / or harmonic current sampling test; the interference test task is: power frequency interference test, same-frequency interference test, out-of-band interference test or one or more combinations thereof; the interference signal source includes: power frequency interference signal, same-frequency interference signal, out-of-band interference signal; wherein, the out-of-band interference signal has a different frequency than the characteristic current signal.

[0043] Specifically, during actual testing, testers can select appropriate target test tasks (which can be a single task or a combination of multiple tasks) as needed, and edit the target test tasks into corresponding instructions. When the system receives the instructions, it will complete the target test task according to the instructions. As a preferred implementation, the testing system provided in this embodiment supports the editing and parsing of sequential instructions. Testers can edit the sequence of test tasks into corresponding instructions, so that when the system receives the sequential instructions, it will complete the target test task based on the sequential instructions.

[0044] In one possible implementation, the interference test on the station identification device based on the selected interference signal includes:

[0045] S1. Control the transmitting end to send a characteristic current signal, and inject an interference signal into the characteristic current signal;

[0046] S2. Obtain the topology identification signal generated by the receiver relative to the interference signal, determine whether the topology identification signal is normal, if so, increase the amplitude of the initial interference signal according to a preset ratio, return to S1, and repeat until the receiver can no longer generate a normal topology identification signal to obtain the interference test result.

[0047] Specifically, when the target test task includes at least two types of interference tests, the corresponding interference tests can be performed in a random order, or the interference test tasks can be completed sequentially according to the parsed order instructions of the interference test tasks.

[0048] In one possible implementation, obtaining the second test result based on the sampling result includes:

[0049] The obtained amplitude-frequency and / or harmonic current values ​​are compared with their corresponding target ranges, and the amplitude-frequency and / or harmonic current test results are generated based on the comparison results.

[0050] Specifically, a preset range (target interval) for amplitude-frequency and a preset range (target interval) for each harmonic current are set in advance. When the corresponding state characteristics are sampled, they are compared with their corresponding preset ranges. If they are within the range, the characteristic indicators are deemed qualified. The corresponding preset ranges can be set according to the technical specifications in this field or through corresponding simulation experiments.

[0051] In one possible implementation, sampling the topology identification signal periodically identified by the receiving end and generating a third test result based on the sampling result includes:

[0052] The topology identification signal obtained by the periodic identification at the receiving end is acquired. The acquired topology identification signal is compared with the corresponding periodic characteristic current signal at the transmitting end. The signal identification success rate is calculated based on the comparison result to obtain the third test result.

[0053] Example 3

[0054] In another aspect, the present invention provides a testing system for a transformer area identification device, the system comprising: electronic equipment (including: hardware interface, test software program, etc.), interference signal generator, and monitoring device;

[0055] One end of the interference signal generator is connected to the electronic device, and the other end is connected to the link between the transmitting end and the receiving end. One end of the monitoring device is connected to the electronic device, and the other end is connected to the link between the transmitting end and the receiving end. The electronic device is communicatively connected to the transmitting end and the receiving end of the station identification instrument.

[0056] The electronic device is used to receive and identify test instructions, extract target test tasks from the test instructions, determine whether there are interference test tasks and / or sampling test tasks among the extracted target test tasks, and if so, select an interference signal source according to the interference test task, perform interference test on the substation identification device based on the selected interference signal source, and obtain a first test result; and / or, perform state sampling on the characteristic current signal sent by the transmitting end according to the type of sampling test task, and obtain a second test result based on the sampling result;

[0057] If not, the transmitting end is controlled to periodically send a preset number of characteristic current signals, and the topology identification signal obtained by the receiving end is sampled, and a third test result is generated based on the sampling result.

[0058] In one possible implementation, the aforementioned electronic device can be one of a terminal, PC, server, etc., and this embodiment is not limited to this. Specifically, Figure 5 This diagram illustrates the connection between the transformer identification test system and the transformer identification device provided in this embodiment of the invention. The electronic device is a PC, such as... Figure 5 As shown, the transmitting and receiving ends are the devices under test, with the receiving end containing the current transformer for measurement. They are connected to the PC and test software via communication ports 1 and 4, respectively. A power supply provides power to the entire test system and is connected to the PC and test software via communication port 5. An interference source, controlled by the PC, injects various interference signals without external characteristics into the line and is connected to the PC and test software via communication port 2. A monitoring device monitors various current signals on the current line (including signals generated by the transmitting end and signals generated by the interference source) to evaluate the characteristics of the transmitted signal and the interference signal. It is connected to the PC and test software via communication port 2 (e.g., a monitoring device consisting of an oscilloscope and a current probe). The test software on the PC uses the aforementioned transformer area identification test method to perform automated testing of the transformer area identification instrument.

[0059] In one possible implementation, during actual testing, the types and order of tasks to be executed in a single test can be customized as needed. Testers can edit the corresponding sequence instructions to the PC, which then identifies the task order and type according to the instructions.

[0060] Specifically, the system's process for executing amplitude and frequency testing tasks includes:

[0061] (1) The test software controls the power supply through communication port 5 to power on the entire system and waits for the power supply to stabilize;

[0062] (2) The test software controls the transmitting end through communication port 1 to send characteristic current signals;

[0063] (3) The test software communicates with the monitoring device through communication port 3 to obtain the amplitude and frequency of the characteristic current signal sent by the transmitting end;

[0064] (4) The test software determines whether the amplitude and frequency of the characteristic current signal are within the required range;

[0065] (5) The testing software provides the test results and records the test process;

[0066] (6) The test software turns off the power output through communication port 5.

[0067] Specifically, the process of the system performing the current harmonic limit test includes:

[0068] (1) The test software controls the power supply through communication port 5 to power on the entire system and waits for the power supply to stabilize;

[0069] (2) The test software controls the transmitting end through communication port 1 to send characteristic current signals;

[0070] (3) The test software communicates with the monitoring device through communication port 3 to obtain the values ​​of each harmonic current when the characteristic current signal is emitted;

[0071] (4) The test software determines whether the values ​​of each harmonic current are within the required range;

[0072] (5) The testing software provides the test results and records the test process;

[0073] (6) The test software turns off the power output through communication port 5.

[0074] Specifically, the process of the system executing the recognition success rate test task includes:

[0075] (1) The test software controls the power supply through communication port 5 to power on the entire system and waits for the power supply to stabilize;

[0076] (2) The test software controls the transmitting end through communication port 1 to send characteristic current signals;

[0077] (3) The test software acquires the topology identification signal identified by the receiver through communication port 4;

[0078] (4) If the receiving end can correctly obtain the topology identification signal from the sending end, then the number of successful identifications n will be recorded. ok Add 1;

[0079] (5) Wait t minutes;

[0080] (6) Jump to (2) until n is completed. t Send once;

[0081] (7) The recognition success rate is n ok / n t ;

[0082] (8) The test software records the recognition success rate and the test process;

[0083] (9) The test software turns off the power output through communication port 5.

[0084] Specifically, the process of the system executing the power frequency interference test task includes:

[0085] (1) The test software controls the power supply through communication port 5 to power on the entire system and waits for the power supply to stabilize;

[0086] (2) The test software injects power frequency interference signal i1 through communication port 2;

[0087] (3) The test software communicates with the monitoring device through communication port 3 to obtain the power frequency interference signal i2; (Because the monitoring device has high accuracy, the power frequency interference signal i2 is measured by the monitoring device as the actual signal amplitude injected by the interference source)

[0088] (4) The test software controls the transmitter through communication port 1 to send characteristic current signals;

[0089] (5) The test software obtains the topology identification signal identified by the receiver through communication port 4;

[0090] (6) If the receiver can correctly obtain the topology identification signal of the transmitter, it is considered that the receiver has the ability to resist out-of-band interference signal i2.

[0091] (7) If i2 can be resisted, the power frequency interference signal i1 is increased by a certain increment; and jump to (2) until the receiver can no longer resist the power frequency interference signal.

[0092] (8) The test software acquires the maximum signal that the receiver can resist power frequency interference signals as the test result and records the test process;

[0093] (9) The test software turns off the power output through communication port 5.

[0094] Specifically, the process of the system executing the co-channel interference test task includes:

[0095] (1) The test software controls the power supply through communication port 5 to power on the entire system and waits for the power supply to stabilize;

[0096] (2) The test software injects a co-frequency interference signal i through communication port 2. t1 ;

[0097] (3) The test software communicates with the monitoring device through communication port 3 to obtain the co-channel interference signal i. t2 (Because the monitoring device has high accuracy, it is used to measure the co-frequency interference signal i) t2 (The actual amplitude of the signal injected by the interference source). For example, if the interference source is set to output 0.5A, it may output a 0.45A signal; the monitoring device measures it as 0.45A and records the amplitude of the interference signal as 0.45A, instead of the 0.5A set to output by the interference source.

[0098] (4) The test software controls the transmitter through communication port 1 to send characteristic current signals;

[0099] (5) The test software obtains the topology identification signal identified by the receiver through communication port 4;

[0100] (6) If the receiver can correctly obtain the topology identification signal of the transmitter, it is considered that the receiver has the ability to resist co-channel interference signal i2.

[0101] (7) If it can resist i t2 Then, the co-frequency interference signal i is increased by a certain increment. t1 ; and jump to (2) until the receiver can no longer properly resist co-channel interference signals.

[0102] (8) The test software obtains the maximum signal that the receiver can resist co-channel interference signals as the test result and records the test process;

[0103] (9) The test software turns off the power output through communication port 5.

[0104] Specifically, the process of the system executing the out-of-band interference test task includes:

[0105] (1) The test software controls the power supply through communication port 5 to power on the entire system and waits for the power supply to stabilize;

[0106] (2) The test software injects out-of-band interference signal i through communication port 2. w1 (at a different frequency than the characteristic current signal);

[0107] (3) The test software communicates with the monitoring device through communication port 3 to obtain the out-of-band interference signal i. w2 (Because the monitoring device has high accuracy, it is used to measure out-of-band interference signal i) w2 (Amplitude of the actual signal injected as the interference source)

[0108] (4) The test software controls the transmitter through communication port 1 to send characteristic current signals;

[0109] (5) The test software obtains the topology identification signal identified by the receiver through communication port 4;

[0110] (6) If the receiver can correctly obtain the topology identification signal of the transmitter, it is considered that the receiver has the ability to resist out-of-band interference signal i2.

[0111] (7) If it can resist i w2 Then the out-of-band interference signal i is increased by a certain increment. w1 ; and jump to (2) until the receiver can no longer properly resist out-of-band interference signals.

[0112] (8) The test software obtains the maximum signal that the receiver can resist out-of-band interference signals as the test result and records the test process;

[0113] (9) The test software turns off the power output through communication port 5.

[0114] In summary, the embodiments of this application construct a test system based on characteristic current topology identification equipment; propose an automated test method and process for characteristic current topology identification equipment; and cover dimensions such as amplitude, frequency test, power frequency interference test, co-frequency interference test, out-of-band interference test, and identification success rate test, making the test more comprehensive and better suited to field application scenarios.

[0115] Another aspect of the present invention, such as Figure 6 As shown, an electronic device is also provided, which includes a processor, a network interface, and a memory. The processor, the network interface, and the memory are interconnected. The memory is used to store a computer program, which includes program instructions. The processor is configured to call the program instructions to execute the above-described station identification instrument testing method.

[0116] In another aspect, the present invention provides a computer storage medium storing program instructions which, when executed by at least one processor, are used for the method of proactively issuing electronic invoices in a guided parking lot according to the present invention.

[0117] In embodiments of the present invention, the processor can be an integrated circuit chip with signal processing capabilities. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0118] The various methods, steps, and logic diagrams disclosed in the embodiments of this invention can be implemented or executed. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this invention can be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. The processor reads information from the storage medium and, in conjunction with its hardware, completes the steps of the above methods.

[0119] The storage medium can be memory, such as volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.

[0120] Among them, non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory.

[0121] Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (Synchlink DRAM, SLDRAM), and direct memory bus RAM (DRRAM).

[0122] The storage media described in the embodiments of the present invention are intended to include, but are not limited to, these and any other suitable types of memory.

[0123] It should be understood that the system disclosed in this invention can be implemented in other ways. For example, the division of modules is merely a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the communication connection between modules can be through some interfaces, indirect coupling or communication connections between servers or units, and can be electrical or other forms.

[0124] Furthermore, the functional modules in the various embodiments of the present invention can be integrated into one processing unit, or each module can exist physically separately, or two or more modules can be integrated into one processing unit. The integrated unit described above can be implemented in hardware or as a software functional unit.

[0125] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0126] The above description discloses only preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A method for testing a transformer area identification device, wherein the transformer area identification device comprises: Sending end and receiving end; characterized in that: the method includes: The system receives and identifies test instructions, extracts target test tasks from the test instructions, determines whether there are interference test tasks and / or sampling test tasks among the extracted target test tasks, selects an interference signal source according to the interference test task, performs interference testing on the substation identification instrument based on the selected interference signal source, and obtains a first test result; and / or, performs state sampling on the characteristic current signal sent by the transmitting end according to the type of sampling test task, and obtains a second test result based on the sampling result. If not, the transmitting end is controlled to periodically send a preset number of characteristic current signals, and the topology identification signal periodically identified by the receiving end is sampled, and a third test result is generated based on the sampling result; The interference test performed on the station identification device based on the selected interference signal includes: S1. Control the transmitting end to send a characteristic current signal, and inject an interference signal into the characteristic current signal; S2. Obtain the topology identification signal generated by the receiver relative to the interference signal, determine whether the topology identification signal is normal, if so, increase the amplitude of the initial interference signal according to a preset ratio, return to S1, and repeat until the receiver can no longer generate a normal topology identification signal, obtain the interference test result, and obtain the maximum signal that the receiver can resist the interference signal as the test result.

2. The method for testing a transformer area identification device as described in claim 1, characterized in that: The interference test task is one or more combinations of power frequency interference test, same frequency interference test, and out-of-band interference test. The interference signal sources include: power frequency interference signals, co-frequency interference signals, and out-of-band interference signals; The out-of-band interference signal has a different frequency than the characteristic current signal.

3. The method for testing a transformer area identification device as described in any one of claims 1-2, characterized in that: The sampling test tasks are: amplitude-frequency sampling test, and / or harmonic current sampling test.

4. The method for testing a transformer area identification device as described in claim 3, characterized in that: The process of obtaining the second test result based on the sampling results includes: The obtained amplitude-frequency and / or harmonic current values ​​are compared with their corresponding target ranges, and the amplitude-frequency and / or harmonic current test results are generated based on the comparison results.

5. The method for testing a transformer area identification device as described in any one of claims 1-2, characterized in that: The step of sampling the topology identification signal obtained by the periodic identification at the receiving end and generating a third test result based on the sampling result includes: The topology identification signal obtained by the periodic identification at the receiving end is acquired. The acquired topology identification signal is compared with the corresponding periodic characteristic current signal at the transmitting end. The signal identification success rate is calculated based on the comparison result to obtain the third test result.

6. An electronic device, characterized in that: It includes at least one processor and a memory communicatively connected to the at least one processor; the memory stores instructions executable by the at least one processor, which, when executed by the at least one processor, enable the at least one processor to perform the station identification instrument testing method according to any one of claims 1 to 5.

7. A transformer area identification device testing system, wherein the transformer area identification device comprises: The system comprises: a transmitter and a receiver; characterized in that: the system includes: electronic equipment, an interference signal generator, and a monitoring device; One end of the interference signal generator is connected to the electronic device, and the other end is connected to the link between the transmitting end and the receiving end. One end of the monitoring device is connected to the electronic device, and the other end is connected to the link between the transmitting end and the receiving end. The electronic device is communicatively connected to the transmitting end and the receiving end of the station identification instrument. The electronic device is used to receive and identify test instructions, extract target test tasks from the test instructions, determine whether there are interference test tasks and / or sampling test tasks among the extracted target test tasks, and if so, control the interference signal generator to select an interference signal source according to the type of the current interference test, and perform interference test on the substation identification instrument based on the selected interference signal source to obtain a first test result; and / or, perform state sampling on the characteristic current signal sent by the transmitting end according to the type of sampling test task, and obtain a second test result based on the sampling result; if not, control the transmitting end to periodically send a preset number of characteristic current signals, sample the topology identification signal periodically identified by the receiving end, and generate a third test result based on the sampling result; The electronic device is also used for: S1, controlling the transmitting end to send a characteristic current signal and injecting an interference signal into the characteristic current signal; S2, acquiring the topology identification signal generated by the receiving end relative to the interference signal, determining whether the topology identification signal is normal, and if so, increasing the amplitude of the initial interference signal according to a preset ratio, returning to S1, and repeating the loop until the receiving end can no longer generate a normal topology identification signal, obtaining the interference test result, and acquiring the maximum signal that the receiving end can resist the interference signal as the test result.

8. The transformer area identification test system as described in claim 7, characterized in that: The monitoring device includes: an oscilloscope and a current probe.

9. The transformer area identification test system as described in claim 7 or 8, characterized in that: The system also includes a power supply for powering the electronic equipment, the interference signal generator, and the monitoring device.

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