Substation secondary circuit verification method and device

Abstract

The present invention provides a method and device for verifying a secondary circuit of a substation, which mainly relates to the field of relay protection and control technology. Specifically, the method for verifying a secondary circuit of a substation includes: based on a secondary circuit wiring diagram of the substation, identifying and obtaining a secondary circuit topology structure of the substation; based on the secondary circuit topology structure, generating a terminal connection relationship configuration table, wherein the terminal connection relationship configuration table includes a starting terminal list; performing circuit verification based on the starting terminal list to obtain a feedback terminal configuration table; performing matching verification on the terminal connection relationship configuration table and the feedback terminal configuration table to obtain a secondary circuit verification result of the substation.

Description

Technical Field

[0001] The present invention relates to the technical field of relay protection and control, and more specifically, to a method and device for verifying a secondary circuit of a transformer substation. Background Art

[0002] With the continuous development of power technology and the continuous expansion of the power grid, substation relay protection equipment is also facing the need for continuous upgrading. In the specific implementation of the technical transformation project, it is necessary to dismantle the original relay protection device, panel cabinet and the secondary cable loop between the panel cabinets. At the same time, it is necessary to install new relay protection devices and panel cabinets, and re-wire and debug the secondary cables. The wiring quality of the secondary cables is directly related to the correct operation of the protection device and the safe and stable operation of the power grid.

[0003] However, at present, the verification of secondary circuits in substations generally relies on manual operations, which are affected by many factors such as personnel status, technical ability, professional level, and meticulousness. As a result, secondary cable wiring errors are frequent and easy to occur, causing relay protection equipment to malfunction or refuse to operate when a power grid fault occurs, posing a threat to the long-term safe and stable operation of the power grid. It not only consumes a lot of maintenance time, but also has low verification accuracy, which is very easy to cause missed detection and wrong detection, seriously affecting the quality and efficiency of substation secondary equipment acceptance. Summary of the invention

[0004] In view of this, the present invention provides a method and device for verifying a secondary circuit of a substation.

[0005] One aspect of the present invention provides a method for verifying a secondary circuit of a substation, comprising: based on a secondary circuit wiring diagram of the substation, identifying a secondary circuit topology structure of the substation; based on the secondary circuit topology structure, generating a terminal connection relationship configuration table, wherein the terminal connection relationship configuration table includes a starting terminal list; performing circuit verification based on the starting terminal list to obtain a feedback terminal configuration table; performing matching verification on the terminal connection relationship configuration table and the feedback terminal configuration table to obtain a secondary circuit verification result of the substation; the circuit verification based on the starting terminal list to obtain the feedback terminal configuration table comprises: for each starting terminal code, injecting a characteristic signal into a first terminal corresponding to the starting terminal code to determine a second terminal having a feedback signal; determining a circuit state detection result between the first terminal and the second terminal based on the signal strength of the feedback signal of the second terminal; and constructing the feedback terminal configuration table based on the starting terminal code, the feedback terminal code of the second terminal, and the circuit state detection result between the first terminal and the second terminal.

[0006] According to an embodiment of the present invention, the above-mentioned determination of the loop state detection result between the above-mentioned first terminal and the above-mentioned second terminal based on the signal strength of the feedback signal of the above-mentioned second terminal includes: when the signal strength of the feedback signal of the above-mentioned second terminal is greater than or equal to the first threshold value, determining that the above-mentioned loop state detection result is characterized as the loop between the above-mentioned first terminal and the above-mentioned second terminal is conductive; when the signal strength of the feedback signal of the above-mentioned second terminal is less than the above-mentioned first threshold value, determining that the above-mentioned loop state detection result is characterized as the loop between the above-mentioned first terminal and the above-mentioned second terminal is disconnected.

[0007] According to an embodiment of the present invention, the feedback terminal configuration table is constructed based on the starting terminal code, the feedback terminal code of the second terminal, and the loop state detection result between the first terminal and the second terminal, including: when the loop state detection result indicates that the loop between the first terminal and the second terminal is conductive, the starting terminal code and the feedback terminal code of the second terminal are added to the feedback terminal configuration table; when the loop state detection result indicates that the loop between the first terminal and the second terminal is disconnected, the starting terminal code and the preset code are added to the feedback terminal configuration table.

[0008] According to an embodiment of the present invention, the above method also includes: when the signal strength of the feedback signal of the above second terminal is greater than or equal to the above first threshold and less than the second threshold, generating feedback information indicating that there is a defect in the loop between the above first terminal and the above second terminal.

[0009] According to an embodiment of the present invention, the substation includes a plurality of cabinets, the cabinets include a plurality of terminal blocks, the terminal blocks include a plurality of terminals, and the secondary circuit topology of the substation includes the connection relationship between the plurality of terminals included in the substation.

[0010] According to an embodiment of the present invention, the terminal connection relationship configuration table includes a starting terminal list and an ending terminal list, and the ending terminal list includes multiple ending terminal codes; wherein, based on the secondary circuit topology structure, the terminal connection relationship configuration table is generated, including: for each terminal, based on the terminal row and panel cabinet to which the terminal belongs, encoding the terminal to obtain the starting terminal code of the terminal; based on the secondary circuit topology structure, determining the target terminal connected to the terminal; based on the terminal row and panel cabinet to which the target terminal belongs, encoding the target terminal to obtain the ending terminal code of the terminal; generating the terminal connection relationship configuration table based on the starting terminal code and the ending terminal code of each of the multiple terminals included in the substation.

[0011] According to an embodiment of the present invention, the above-mentioned terminal connection relationship configuration table and the above-mentioned feedback terminal configuration table are matched and checked to obtain the secondary circuit verification result of the above-mentioned substation, including: parsing from the above-mentioned feedback terminal configuration table to obtain multiple first connection relationship tuples, forming a first set, wherein the above-mentioned first connection relationship tuple includes a starting terminal code and a feedback terminal code; parsing from the above-mentioned terminal connection relationship configuration table to obtain multiple second connection relationship tuples, forming a second set, wherein the above-mentioned second connection relationship tuple includes a starting terminal code and an end terminal code; based on the inclusion relationship between the above-mentioned first set and the above-mentioned second set, the secondary circuit verification result of the above-mentioned substation is obtained.

[0012] According to an embodiment of the present invention, the secondary circuit verification result of the substation is obtained based on the inclusion relationship between the first set and the second set, including: when it is determined that the first set is equal to the second set, the secondary circuit verification result of the substation is determined to be characterized as the substation passing the verification; when it is determined that the first set contains the second set, the secondary circuit verification result of the substation is determined to be characterized as multiple connections of the substation lines; when it is determined that the second set contains the first set, the secondary circuit verification result of the substation is determined to be characterized as missing connections of the substation lines; when it is determined that there is no inclusion relationship between the first set and the second set, and the first connection relationship is two When the number of tuples is equal to the number of the second connection relationship tuples, it is determined that the secondary circuit verification result of the substation is characterized by wrong connection of the lines of the substation; when it is determined that there is no inclusion relationship between the first set and the second set, and the number of the first connection relationship tuples is less than the number of the second connection relationship tuples, it is determined that the secondary circuit verification result of the substation is characterized by wrong connection and missed connection of the lines of the substation; when it is determined that there is no inclusion relationship between the first set and the second set, and the number of the first connection relationship tuples is greater than the number of the second connection relationship tuples, it is determined that the secondary circuit verification result of the substation is characterized by wrong connection and multiple connection of the lines of the substation.

[0013] Another aspect of the present invention provides a substation secondary circuit verification device, including: an identification module, used to identify the secondary circuit topology structure of the substation based on the secondary circuit wiring diagram of the substation; a generation module, used to generate a terminal connection relationship configuration table based on the secondary circuit topology structure, wherein the terminal connection relationship configuration table includes a starting terminal list; a determination module, used to perform circuit verification based on the starting terminal list to obtain a feedback terminal configuration table; a verification module, used to match and verify the terminal connection relationship configuration table and the feedback terminal configuration table to obtain the secondary circuit verification result of the substation.

[0014] Another aspect of the present invention provides an electronic device, comprising: one or more processors; and a memory for storing one or more programs, wherein when the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned method.

[0015] Another aspect of the present invention provides a computer-readable storage medium storing computer-executable instructions, which are used to implement the above method when executed.

[0016] Another aspect of the present invention provides a computer program product, the computer program product comprising computer executable instructions, and the instructions are used to implement the above method when executed.

[0017] According to the embodiment of the present invention, multiple secondary circuits of a substation are automatically checked, so as to significantly reduce the time and labor of manual verification and improve the efficiency of secondary circuit wiring verification. At the same time, the method can also reduce human errors and improve the accuracy of verification. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will become more apparent through the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:

[0019] Figure 1 A flow chart of a substation secondary circuit verification method according to an embodiment of the present invention is shown.

[0020] Figure 2 A schematic diagram of a port information model according to a specific embodiment of the present invention is shown.

[0021] Figure 3 A schematic diagram of a terminal connection relationship configuration table according to a specific embodiment of the present invention is shown.

[0022] Figure 4 A schematic diagram of a feedback terminal configuration table according to a specific embodiment of the present invention is shown.

[0023] Figure 5 A flowchart showing a method for verifying a secondary circuit of a substation according to a specific embodiment of the present invention is shown.

[0024] Figure 6 A schematic diagram of an intelligent matching method using a centralized control system according to a specific embodiment of the present invention is shown.

[0025] Figure 7 A block diagram of a substation secondary circuit verification device according to an embodiment of the present invention is shown.

[0026] Figure 8 A block diagram of an electronic device suitable for implementing a substation secondary circuit verification method according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0027] Below, embodiments of the present invention will be described with reference to the accompanying drawings. However, it should be understood that these descriptions are exemplary only and are not intended to limit the scope of the present invention. In the following detailed description, for ease of explanation, many specific details are set forth to provide a comprehensive understanding of embodiments of the present invention. However, it is apparent that one or more embodiments may also be implemented without these specific details. In addition, in the following description, descriptions of known structures and technologies are omitted to avoid unnecessary confusion of concepts of the present invention.

[0028] The terms used herein are only for describing specific embodiments and are not intended to limit the present invention. The terms "comprise", "include", etc. used herein indicate the existence of the features, steps, operations and / or components, but do not exclude the existence or addition of one or more other features, steps, operations or components.

[0029] All terms (including technical and scientific terms) used herein have the meanings commonly understood by those skilled in the art unless otherwise defined. It should be noted that the terms used herein should be interpreted as having a meaning consistent with the context of this specification and should not be interpreted in an idealized or overly rigid manner.

[0030] When using expressions such as "at least one of A, B, and C, etc.", they should generally be interpreted according to the meaning of the expression commonly understood by those skilled in the art (for example, "a system having at least one of A, B, and C" should include but is not limited to a system having A alone, B alone, C alone, A and B, A and C, B and C, and / or A, B, C, etc.).

[0031] With the continuous development of power technology and the continuous expansion of the power grid, substation relay protection equipment is also facing the need for continuous upgrading. The main purpose of the technical transformation project is to improve the performance, reliability and safety of the equipment to meet the new requirements of the power grid development. At the same time, through technical transformation, it is also possible to optimize equipment configuration, improve operating efficiency and reduce operation and maintenance costs.

[0032] During the implementation of the technical transformation project, the original relay protection devices, panel cabinets, and secondary cable loops between panel cabinets need to be removed. These loops include secondary control cables and secondary current and voltage loop cables, which are responsible for transmitting key information between protection devices and between protection devices and protected equipment. At the same time, new relay protection devices need to be installed and the secondary cable wiring work needs to be re-performed. The wiring quality of the secondary cable is directly related to the correct operation of the protection device and the safe and stable operation of the power grid.

[0033] However, due to the influence of many factors such as operating ability, professional level, and meticulousness, secondary cable wiring errors are frequent and easy to occur, causing relay protection equipment to malfunction or refuse to operate when a fault occurs in the power grid, posing a threat to the long-term safe and stable operation of the power grid. In addition, the current substation secondary circuit verification work generally relies on manual operation, which is carried out one by one according to the drawings using tools such as multimeters and resistance meters. Due to the different technical levels of the staff and the degree of tacit cooperation, it not only consumes a lot of maintenance time, but also has low verification accuracy, which is very easy to cause missed detection and wrong detection, and the actual quality and efficiency of the secondary circuit wiring verification is not significant.

[0034] In view of this, the embodiment of the present invention performs automatic back-checking for multiple secondary circuits of a substation, so as to significantly reduce the time and labor of manual verification and improve the efficiency of secondary circuit wiring verification. At the same time, the method can also reduce human errors and improve the accuracy of verification.

[0035] An embodiment of the present invention provides a method for verifying a secondary circuit of a substation, comprising: based on a secondary circuit wiring diagram of the substation, identifying a secondary circuit topology structure of the substation; based on the secondary circuit topology structure, generating a terminal connection relationship configuration table, wherein the terminal connection relationship configuration table includes a starting terminal list; performing circuit verification based on the starting terminal list to obtain a feedback terminal configuration table; performing matching verification on the terminal connection relationship configuration table and the feedback terminal configuration table to obtain a secondary circuit verification result of the substation; wherein, performing circuit verification based on the starting terminal list to obtain a feedback terminal configuration table, comprising: for each starting terminal code, injecting a characteristic signal into a first terminal corresponding to the starting terminal code to determine a second terminal having a feedback signal; determining a circuit state detection result between the first terminal and the second terminal based on the signal strength of the feedback signal of the second terminal; and constructing a feedback terminal configuration table based on the starting terminal code, the feedback terminal code of the second terminal, and the circuit state detection result between the first terminal and the second terminal.

[0036] Figure 1 A flow chart of a substation secondary circuit verification method according to an embodiment of the present invention is shown.

[0037] like Figure 1 As shown, the method includes operations S101 to S104.

[0038] In operation S101 , based on a secondary circuit wiring diagram of a substation, a secondary circuit topology structure of the substation is identified.

[0039] According to an embodiment of the present invention, in a substation, a secondary circuit is a system for monitoring, measuring, controlling and protecting a primary system. These circuits realize multiple functions through complex wiring. Therefore, the topological structure of the secondary circuit can be identified based on the secondary circuit wiring diagram. Among them, the topological structure of the secondary circuit includes the secondary cable connection relationship, signal flow direction and the functions realized by the multiple devices included in the secondary circuit. Specifically, the multiple devices of the secondary circuit of the substation may include a panel cabinet, a terminal block, a terminal, etc., then the topological structure of the secondary circuit may include the connection relationship between multiple terminals, multiple panel cabinets, and multiple terminal blocks.

[0040] According to an embodiment of the present invention, the recognition method may adopt, for example, image recognition, support vector machine, K-means clustering algorithm, etc.

[0041] In operation S102 , a terminal connection relationship configuration table is generated based on the secondary circuit topology structure.

[0042] According to an embodiment of the present invention, based on the identified secondary circuit topology, the connection matching relationship between each panel cabinet and the terminal is confirmed to generate a terminal connection relationship configuration table.

[0043] According to an embodiment of the present invention, the terminal connection relationship configuration table includes a starting terminal list for recording connection information of terminals that send signals.

[0044] In operation S103, a loop check is performed based on the starting terminal list to obtain a feedback terminal configuration table.

[0045] According to an embodiment of the present invention, based on the starting terminal list, the reception signal conditions of multiple terminals included in the secondary loop are detected to obtain a feedback terminal configuration table, wherein the feedback terminal configuration table can be used to record feedback information of multiple terminals.

[0046] In operation S104, a matching check is performed on the terminal connection relationship configuration table and the feedback terminal configuration table to obtain a secondary circuit check result of the substation.

[0047] According to an embodiment of the present invention, after completing the loop verification, it is necessary to perform a matching verification on the terminal connection relationship configuration table and the feedback terminal configuration table to ensure that in actual operation, the connections of all terminals are consistent with the design drawings without errors or omissions.

[0048] According to the embodiment of the present invention, the verification result of the secondary circuit of the substation can be obtained by matching the terminal connection relationship configuration table with the feedback terminal configuration table. According to the verification result, it can be determined whether the secondary circuit needs to be checked and corrected.

[0049] Based on this, the embodiment of the present invention performs automatic back-checking for multiple secondary circuits of a substation, so as to significantly reduce the time and labor of manual verification and improve the efficiency of secondary circuit wiring verification. At the same time, the method can also reduce human errors and improve the accuracy of verification.

[0050] According to an embodiment of the present invention, a substation may include multiple cabinets, each cabinet may include multiple terminal blocks, each terminal block may include multiple terminals, and the secondary circuit topology of the substation may include the connection relationship between the multiple terminals included in the substation.

[0051] According to an embodiment of the present invention, based on the secondary circuit topology structure, a terminal connection relationship configuration table is generated, including: for each terminal, based on the terminal block and panel cabinet to which the terminal belongs, the terminal is encoded to obtain the starting terminal code of the terminal; based on the secondary circuit topology structure, the target terminal connected to the terminal is determined; based on the terminal block and panel cabinet to which the target terminal belongs, the target terminal is encoded to obtain the end terminal code of the terminal; based on the starting terminal code and the end terminal code of each of the multiple terminals included in the substation, a terminal connection relationship configuration table is generated.

[0052] According to an embodiment of the present invention, for each terminal, the terminal may be encoded based on the terminal row and the panel cabinet described by the terminal in the secondary circuit topology structure to obtain the starting terminal code of the terminal.

[0053] According to a specific embodiment of the present invention, the terminal block and cabinet information can be integrated into the terminal coding based on the coding rules. For example, the format of "cabinet number_terminal block position_terminal serial number" can be used.

[0054] The "panel number" is a unique identifier of the panel, which can be used to characterize the panel position of the terminal, and is represented by the first variable C1. The value of the first variable C1 can start from 1 and take integers upwards.

[0055] Among them, "terminal row position" can be used to represent the position of the terminal row in the panel cabinet where the terminal is located, and is represented by the second variable C2. Among them, when the second variable C2 is Z, it represents the terminal row on the left side of the panel cabinet, and when the second variable C2 is Y, it represents the terminal row on the right side of the panel cabinet.

[0056] Among them, the "terminal serial number" can be used to represent the position of the terminal on the terminal row in the panel cabinet, and is represented by the third variable C3. The value of the third variable C3 can be the order of the terminal on the corresponding terminal row (such as arranged from top to bottom).

[0057] According to a specific embodiment of the present invention, each terminal is encoded according to the above encoding rules to obtain the starting terminal code.

[0058] Figure 2 A schematic diagram of a port information model according to a specific embodiment of the present invention is shown.

[0059] like Figure 2 As shown, the terminal code of the third terminal from top to bottom on the left side of the No. 10 main transformer protection panel cabinet is "10_Z_3", and the terminal code of the seventh terminal from top to bottom on the right side is "10_Y_7".

[0060] According to an embodiment of the present invention, based on the secondary circuit topology, that is, the connection relationship between multiple terminals in the secondary circuit, the target terminal connected to the starting terminal is determined. Based on the terminal row and the panel cabinet to which the target terminal belongs, the target terminal is encoded again in the above encoding method to obtain the terminal terminal code.

[0061] According to an embodiment of the present invention, a terminal connection relationship configuration table is generated based on the start terminal code and the end terminal code of each of the multiple terminals included in the substation. The terminal connection relationship configuration table can be used to record the start terminal code, the end terminal code of each terminal and the connection relationship between them. The columns of the table may include "start terminal code", "end terminal code" and "connection relationship description" and the like.

[0062] Figure 3 A schematic diagram of a terminal connection relationship configuration table according to a specific embodiment of the present invention is shown.

[0063] like Figure 3 As shown, the terminal connection relationship configuration table may include a detection sequence number x, which can be used to characterize the order in which the terminals of the entire station are checked. The detection sequence number x can be an integer from 1 to N, where N represents the total number of terminals to be checked. The start terminal code represents the coding information of the terminal that sends the signal, covering all terminals included in the substation. The end terminal code represents the coding information of the terminal that has a connection relationship with the start terminal code.

[0064] Based on this, the embodiment of the present invention ensures that each terminal has a unique identifier (i.e., the starting terminal code) by encoding the terminal row and the panel cabinet to which the terminal belongs. This encoding method is not only easy to identify, but also greatly reduces errors caused by human factors. In addition, the embodiment of the present invention, combined with the secondary circuit topology structure, can automatically match the target terminal connected to each starting terminal and generate the corresponding end terminal code to improve the efficiency of generating the terminal connection relationship configuration table and reduce the tedious manual operation. At the same time, the terminal connection relationship configuration table records in detail the starting and end codes of each terminal, as well as the connection relationship between them, so that maintenance personnel can quickly locate specific terminals and their connection relationships, thereby more effectively performing maintenance and repair work.

[0065] According to an embodiment of the present invention, a loop check is performed based on a starting terminal list to obtain a feedback terminal configuration table, including: for each starting terminal code, injecting a characteristic signal into a first terminal corresponding to the starting terminal code to determine a second terminal where a feedback signal exists; based on the signal strength of the feedback signal of the second terminal, determining a loop state detection result between the first terminal and the second terminal; and constructing a feedback terminal configuration table based on the starting terminal code, the feedback terminal code of the second terminal, and the loop state detection result between the first terminal and the second terminal.

[0066] According to an embodiment of the present invention, the first terminal can be used to characterize the starting terminal, and the second terminal can be used to characterize the ending terminal. For each starting terminal code in the terminal connection relationship configuration table, signals can be injected one by one starting from the first starting terminal that needs to be checked to detect whether there is a feedback signal in all possible terminals connected to the starting terminal, and the terminal with the feedback signal is determined as the second terminal.

[0067] According to an embodiment of the present invention, the loop state detection result between the first terminal and the second terminal is determined based on the signal strength (such as amplitude, phase difference, etc.) of the feedback signal of the second terminal and the characteristics (such as waveform, frequency, etc.) of the signal. The loop state detection result may include "normal", "open circuit", "short circuit", "bad contact", etc.

[0068] According to an embodiment of the present invention, for each starting terminal code, the feedback terminal code of the second terminal connected thereto, the signal strength of the feedback signal and the loop state detection result are recorded, thereby constructing a feedback terminal configuration table.

[0069] According to an embodiment of the present invention, based on the signal strength of the feedback signal of the second terminal, a loop state detection result between the first terminal and the second terminal is determined, including: when the signal strength of the feedback signal of the second terminal is greater than or equal to a first threshold, determining that the loop state detection result is characterized as a loop conduction between the first terminal and the second terminal; and when the signal strength of the feedback signal of the second terminal is less than the first threshold, determining that the loop state detection result is characterized as a loop disconnection between the first terminal and the second terminal.

[0070] According to an embodiment of the present invention, the method further includes: generating feedback information indicating that there is a defect in the loop between the first terminal and the second terminal when the signal strength of the feedback signal of the second terminal is greater than or equal to the first threshold and less than the second threshold.

[0071] According to an embodiment of the present invention, for each starting terminal code, when a characteristic signal is injected into the starting terminal corresponding to the starting terminal code to perform verification, the starting terminal is used to send a signal, and all other terminals except the starting terminal are used to receive a signal. The sent signal may include a characteristic frequency signal, a square wave signal, etc., and the received signal may be used as a feedback signal.

[0072] According to an embodiment of the present invention, the second terminal receiving the signal can determine the loop state based on the signal strength.

[0073] According to an embodiment of the present invention, when a terminal receives a signal and the signal strength is greater than or equal to a first threshold, the terminal can serve as a second terminal with a feedback signal, and the loop status detection result is characterized as that the loop between the first terminal and the second terminal is conductive and normal.

[0074] According to an embodiment of the present invention, when a terminal receives a signal and the signal strength is less than a first threshold, the terminal can be used as a second terminal with a feedback signal, and the loop state detection result is characterized as a disconnection of the loop between the first terminal and the second terminal.

[0075] For example, let the signal strength be D, the first threshold be 0.1D, and the second threshold be 0.9D. When the terminal receives a signal, and the signal is less than D and greater than 0.9D, it means that the corresponding circuit is connected, the signal reception is normal and within the normal attenuation range; when the terminal receives a signal, and the signal is less than 0.9D and greater than 0.1D, it means that the corresponding circuit is connected, the signal reception is normal, but the signal characteristic attenuation amplitude is too large compared to the normal range, indicating that there may be defects such as external damage, slight disconnection, poor density, and cable virtual connection; when the signal strength of the terminal is greater than or equal to 0 and less than 0.1D, it means that it has not received a signal and the circuit is not connected.

[0076] According to an embodiment of the present invention, a feedback terminal configuration table is constructed based on a starting terminal code, a feedback terminal code of a second terminal, and a loop state detection result between the first terminal and the second terminal, including: when the loop state detection result indicates that the loop between the first terminal and the second terminal is conductive, the starting terminal code and the feedback terminal code of the second terminal are added to the feedback terminal configuration table; and when the loop state detection result indicates that the loop between the first terminal and the second terminal is disconnected, the starting terminal code and the preset code are added to the feedback terminal configuration table.

[0077] Figure 4 A schematic diagram of a feedback terminal configuration table according to a specific embodiment of the present invention is shown.

[0078] like Figure 4 As shown, the terminal connection relationship configuration table may include a detection number x, which can be used to characterize the order in which the terminals of the entire station are checked. The detection number x can take a value of an integer from 1 to N, where N represents the total number of terminals to be checked. The starting terminal code represents the coding information of the terminal that sends the signal, covering all terminals included in the substation. The end terminal code represents the coding information of the terminal that has a connection relationship with the starting terminal code. "0" in the table is the preset code, which means that the terminal is not connected or the signal reception is not within the test range.

[0079] Based on this, the embodiment of the present invention injects a characteristic signal into each starting terminal code and detects the corresponding feedback signal to achieve a comprehensive verification of the secondary circuit of the substation, thereby improving the reliability and safety of the entire power system. In addition, the loop state is determined based on the signal strength of the feedback signal, which can accurately distinguish the loop conduction state, and automatically build a feedback terminal configuration table based on the loop state detection result to quickly locate the loop with problems. It not only helps to quickly troubleshoot, but also reduces the extra workload caused by misjudgment.

[0080] According to an embodiment of the present invention, a terminal connection relationship configuration table and a feedback terminal configuration table are matched and checked to obtain a secondary circuit verification result of the substation, including: parsing a plurality of first connection relationship tuples from the feedback terminal configuration table to form a first set, wherein the first connection relationship tuple includes a starting terminal code and a feedback terminal code; parsing a plurality of second connection relationship tuples from the terminal connection relationship configuration table to form a second set, wherein the second connection relationship tuple includes a starting terminal code and an ending terminal code; based on the inclusion relationship between the first set and the second set, the secondary circuit verification result of the substation is obtained.

[0081] According to an embodiment of the present invention, multiple terminal coding information is extracted from the feedback terminal configuration table to generate multiple first connection relationship tuples. Each first connection relationship tuple includes a starting terminal code and a feedback terminal code. These tuples constitute a first set to represent the actual detected connection relationship between the terminals.

[0082] According to an embodiment of the present invention, multiple terminal coding information is extracted from the terminal connection relationship configuration table to generate multiple second connection relationship tuples. Each second connection relationship tuple includes a starting terminal code and an end terminal code. These tuples constitute a second set to represent the connection relationship between terminals that should exist in theory.

[0083] According to an embodiment of the present invention, based on the inclusion relationship between the first set and the second set, a secondary circuit verification result of the substation is obtained, including: when it is determined that the first set is equal to the second set, the secondary circuit verification result of the substation is characterized as the substation verification passed; when it is determined that the first set contains the second set, the secondary circuit verification result of the substation is characterized as the substation line is multiple connected; when it is determined that the second set contains the first set, the secondary circuit verification result of the substation is characterized as the substation line is missing; when it is determined that there is no inclusion relationship between the first set and the second set, and the number of the first connection relationship tuple is When the number of first connection relationship tuples is equal to the number of second connection relationship tuples, it is determined that the secondary circuit verification result of the substation is characterized by wrong connection of the substation lines; when it is determined that there is no inclusion relationship between the first set and the second set, and the number of first connection relationship tuples is less than the number of second connection relationship tuples, it is determined that the secondary circuit verification result of the substation is characterized by wrong connection and missed connection of the substation lines; when it is determined that there is no inclusion relationship between the first set and the second set, and the number of first connection relationship tuples is greater than the number of second connection relationship tuples, it is determined that the secondary circuit verification result of the substation is characterized by wrong connection and multiple connection of the substation lines.

[0084] According to a specific embodiment of the present invention, the first set of terminal connection relationships actually detected can be identified as set A, and the number of first connection relationship tuples is m; the second set of terminal connection relationships that should theoretically exist can be identified as set B, and the number of second connection relationship tuples is n.

[0085] For example, when it is determined that there is an inclusion relationship between the first set and the second set, the secondary circuit verification result of the substation can be obtained based on the inclusion relationship between the first set and the second set. The discrimination method includes: if the inclusion relationship between the sets is A equal to B, then the secondary circuit verification result of the substation is that the substation verification passed. If the inclusion relationship between the sets is A contains B, then the secondary circuit verification result of the substation is that the secondary cable of the substation is "multiple connections". If the inclusion relationship between the sets is B contains A, then the secondary circuit verification result of the substation is that the secondary cable of the substation is "missing connection".

[0086] For example, when it is determined that there is no inclusion relationship between the first set and the second set, the secondary circuit verification result of the substation can be obtained based on the number of first connection relationship tuples and the number of second connection relationship tuples. The discrimination method includes: if m is equal to n, the secondary circuit verification result of the substation is that the secondary cable of the substation is "wrongly connected". If m is less than n, the secondary circuit verification result of the substation is that the secondary cable of the substation is "wrongly connected and missed". If m is greater than n, the secondary circuit verification result of the substation is that the secondary cable of the substation is "wrongly connected and multiple connections".

[0087] According to a specific embodiment of the present invention, if the verification result is not passed, the terminal sending the signal can resend it once every 100ms, and perform the verification operation again based on the feedback from the terminal receiving the signal to improve the accuracy of the verification result. If the test still fails after retransmission, it means that the actual cable connection relationship is wrong, and the terminal information and error type of the matching error can be recorded and saved.

[0088] Based on this, the embodiment of the present invention can accurately identify the connection status of the substation secondary circuit and automatically divide the verification results by matching and verifying the feedback terminal configuration table (actual connection status) with the terminal connection relationship configuration table (theoretical connection status). It not only provides detailed diagnostic information for operation and maintenance personnel, improves the efficiency and accuracy of operation and maintenance work, but also reduces operation and maintenance costs and system downtime, providing a strong guarantee for the safe and stable operation of the power system.

[0089] Reference below Figure 5 , the substation secondary circuit verification method is further explained in combination with a specific embodiment.

[0090] Figure 5 A flow chart of a substation secondary circuit verification method according to a specific embodiment of the present invention is shown.

[0091] like Figure 5 As shown, the substation secondary circuit verification method includes operations S501 to S513.

[0092] In operation S501, identify the secondary circuit topology; in operation S502, construct the terminal coding information; in operation S503, generate the terminal connection relationship configuration table; in operation S504, inject the characteristic signal into the starting terminal; in operation S505, determine whether the signal strength of the feedback signal meets the discrimination condition, if yes, execute operation S506, record the feedback terminal coding, if no, execute operation S507, record the preset terminal coding. In operation S508, determine whether the matching check between the feedback terminal configuration table information and the terminal connection configuration table information is passed, if yes, execute operation S509. If no, execute operation S510, resend the characteristic signal to the starting terminal, and execute operation S511 to save the terminal information and error type of the matching error. In operation S509, determine whether the detection of the entire station terminal is completed, if yes, execute operation S512, generate the secondary circuit verification report of the entire station, if no, execute S513, perform the next round of detection process, and re-execute operation S504.

[0093] According to a specific embodiment of the present invention, a centralized control system can be used to intelligently match the terminal information of the actual detection and reception signal with the terminal connection relationship configuration table to verify the correctness of the secondary cable connection relationship.

[0094] Figure 6 A schematic diagram of an intelligent matching method using a centralized control system according to a specific embodiment of the present invention is shown.

[0095] like Figure 6 As shown, the centralized control system may include a centralized controller and multiple execution terminals. The centralized controller and the multiple execution terminals may communicate, transmit and control each other based on a wireless connection, thereby reducing the risk of miswiring and eliminating the need for subsequent inspection and maintenance. At the same time, it also avoids the risk of additional physical wiring interfering with the normal operation of the relay protection equipment.

[0096] Among them, the centralized controller can be used to identify the topology structure, generate the receiving signal strategy and the sending signal strategy, and perform matching verification to compare the actual signal terminal information received with the information in the configuration table, thereby verifying the accuracy of the secondary cable connection relationship.

[0097] Among them, the multiple execution terminals may include execution terminal 1 to execution terminal n, and each execution terminal includes a terminal controller, a signal generator, a power supply, etc. The multiple execution terminals are used to receive control signals from the centralized controller and perform corresponding operations according to the signals. When the execution terminal receives the control signal, it sends a trigger signal to the signal transmission port and monitors the feedback signal of the signal reception port. Subsequently, the execution terminal sends the received signal terminal status back to the centralized controller for matching verification.

[0098] Figure 7 A block diagram of a substation secondary circuit verification device according to an embodiment of the present invention is shown.

[0099] like Figure 7 As shown, the substation secondary circuit verification device includes an identification module 710 , a generation module 720 , a determination module 730 and a verification module 740 .

[0100] The identification module 710 is used to identify the secondary circuit topology of the substation based on the secondary circuit wiring diagram of the substation.

[0101] The generating module 720 is used to generate a terminal connection relationship configuration table based on the secondary circuit topology structure, wherein the terminal connection relationship configuration table includes a starting terminal list.

[0102] The determination module 730 is used to perform loop verification based on the starting terminal list to obtain a feedback terminal configuration table.

[0103] The verification module 740 is used to perform matching verification on the terminal connection relationship configuration table and the feedback terminal configuration table to obtain the secondary circuit verification result of the substation.

[0104] According to an embodiment of the present invention, the determination module 730 includes a signal injection submodule, a first determination submodule, and a construction submodule.

[0105] The signal injection submodule is used to inject a characteristic signal into a first terminal corresponding to each starting terminal code to determine a second terminal having a feedback signal.

[0106] The first determination submodule is used to determine a loop state detection result between the first terminal and the second terminal based on the signal strength of the feedback signal of the second terminal.

[0107] The construction submodule is used to construct a feedback terminal configuration table based on the start terminal code, the feedback terminal code of the second terminal, and the loop state detection result between the first terminal and the second terminal.

[0108] According to an embodiment of the present invention, the first determining submodule includes a first judging unit and a second judging unit.

[0109] The first judgment unit is used to determine that the loop state detection result is characterized as the loop conduction between the first terminal and the second terminal when the signal strength of the feedback signal of the second terminal is greater than or equal to a first threshold.

[0110] The second judgment unit is used to determine that the loop state detection result is characterized as a loop disconnection between the first terminal and the second terminal when the signal strength of the feedback signal of the second terminal is less than the first threshold.

[0111] According to an embodiment of the present invention, the construction submodule includes a first adding unit and a second adding unit.

[0112] The first adding unit is used to add the starting terminal code and the feedback terminal code of the second terminal to the feedback terminal configuration table when the loop state detection result indicates that the loop between the first terminal and the second terminal is conductive.

[0113] The second adding unit is configured to add the starting terminal code and the preset code to the feedback terminal configuration table when the loop state detection result indicates that the loop between the first terminal and the second terminal is disconnected.

[0114] According to an embodiment of the present invention, the first determining submodule further includes a first generating unit.

[0115] The first generating unit is used to generate feedback information indicating that there is a defect in the loop between the first terminal and the second terminal when the signal strength of the feedback signal of the second terminal is greater than or equal to the first threshold and less than the second threshold.

[0116] According to an embodiment of the present invention, the generation module 720 includes a first encoding submodule, a second determining submodule, a second encoding submodule, and a first generating submodule.

[0117] The first encoding submodule is used to encode each terminal based on the terminal row and the panel cabinet to which the terminal belongs, so as to obtain the starting terminal code of the terminal.

[0118] The second determination submodule is used to determine a target terminal connected to the terminal based on the secondary circuit topology.

[0119] The second encoding submodule is used to encode the target terminal based on the terminal row and the panel cabinet to which the target terminal belongs, so as to obtain the terminal terminal code.

[0120] The first generating submodule is used to generate a terminal connection relationship configuration table based on the start terminal codes and the end terminal codes of the plurality of terminals included in the substation.

[0121] According to the embodiment of the present invention, the verification module 740 includes a first constituent submodule, a second constituent submodule, and a third determination submodule.

[0122] The first forming submodule is used to parse a plurality of first connection relationship tuples from the feedback terminal configuration table to form a first set, wherein the first connection relationship tuple includes a starting terminal code and a feedback terminal code.

[0123] The second constituting submodule is used to parse a plurality of second connection relationship tuples from the terminal connection relationship configuration table to form a second set, wherein the second connection relationship tuples include a starting terminal code and an ending terminal code.

[0124] The third determination submodule is used to obtain the secondary circuit verification result of the substation based on the inclusion relationship between the first set and the second set.

[0125] According to an embodiment of the present invention, the third determining submodule includes a first determining unit, a second determining unit, a third determining unit, a fourth determining unit, a fifth determining unit, and a sixth determining unit.

[0126] The first determination unit is used to determine that the secondary circuit verification result of the substation is characterized as substation verification passing when it is determined that the first set is equal to the second set.

[0127] The second determining unit is used to determine that the secondary circuit verification result of the substation is characterized as multiple connection of lines in the substation when it is determined that the first set includes the second set.

[0128] The third determining unit is configured to determine that the secondary circuit verification result of the substation is characterized as a line missing connection of the substation when it is determined that the second set includes the first set.

[0129] The fourth determination unit is used to determine that the secondary circuit verification result of the substation is characterized as a wrong connection of the substation line when it is determined that there is no inclusion relationship between the first set and the second set and the number of first connection relationship tuples is equal to the number of second connection relationship tuples.

[0130] The fifth determination unit is used to determine that the secondary circuit verification result of the substation is characterized by misconnection and missing connections of the substation lines when it is determined that there is no inclusion relationship between the first set and the second set and the number of first connection relationship tuples is less than the number of second connection relationship tuples.

[0131] The sixth determination unit is used to determine that the secondary circuit verification result of the substation is characterized as wrong and multiple connections of the substation lines when it is determined that there is no inclusion relationship between the first set and the second set and the number of first connection relationship tuples is greater than the number of second connection relationship tuples.

[0132] According to the embodiments of the present invention, any one or more of the modules, submodules, units, and subunits, or at least part of the functions of any one of them can be implemented in one module. According to the embodiments of the present invention, any one or more of the modules, submodules, units, and subunits can be split into multiple modules for implementation. According to the embodiments of the present invention, any one or more of the modules, submodules, units, and subunits can be at least partially implemented as hardware circuits, such as field programmable gate arrays (FPGAs), programmable logic arrays (PLAs), systems on chips, systems on substrates, systems on packages, application specific integrated circuits (ASICs), or can be implemented by hardware or firmware in any other reasonable way of integrating or packaging the circuit, or by any one of the three implementation methods of software, hardware, and firmware, or by a proper combination of any of them. Alternatively, according to the embodiments of the present invention, one or more of the modules, submodules, units, and subunits can be at least partially implemented as computer program modules, and when the computer program modules are run, the corresponding functions can be executed.

[0133] For example, any multiple of the identification module 710, the generation module 720, the determination module 730 and the verification module 740 can be combined in one module / unit / sub-unit for implementation, or any one of the modules / units / sub-units can be split into multiple modules / units / sub-units. Alternatively, at least part of the functions of one or more of these modules / units / sub-units can be combined with at least part of the functions of other modules / units / sub-units and implemented in one module / unit / sub-unit. According to an embodiment of the present invention, at least one of the identification module 710, the generation module 720, the determination module 730 and the verification module 740 can be at least partially implemented as a hardware circuit, such as a field programmable gate array (FPGA), a programmable logic array (PLA), a system on a chip, a system on a substrate, a system on a package, an application specific integrated circuit (ASIC), or can be implemented by hardware or firmware such as any other reasonable way of integrating or packaging the circuit, or implemented in any one of the three implementation methods of software, hardware and firmware or in a suitable combination of any of them. Alternatively, at least one of the identification module 710 , the generation module 720 , the determination module 730 , and the verification module 740 may be at least partially implemented as a computer program module, and when the computer program module is executed, a corresponding function may be performed.

[0134] It should be noted that the substation secondary circuit verification device part in the embodiment of the present invention corresponds to the substation secondary circuit verification method part in the embodiment of the present invention. The description of the substation secondary circuit verification device part specifically refers to the substation secondary circuit verification method part, which will not be repeated here.

[0135] Figure 8A block diagram of an electronic device suitable for implementing a substation secondary circuit verification method according to an embodiment of the present invention is shown. Figure 8 The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present invention.

[0136] like Figure 8 As shown, the electronic device according to an embodiment of the present invention includes a processor 801, which can perform various appropriate actions and processes according to the program stored in the read-only memory ROM 802 or the program loaded from the storage part 808 to the random access memory RAM 803. The processor 801 may include, for example, a general-purpose microprocessor (such as a CPU), an instruction set processor and / or a related chipset and / or a special-purpose microprocessor (for example, an application-specific integrated circuit (ASIC)), etc. The processor 801 may also include an on-board memory for caching purposes. The processor 801 may include a single processing unit or multiple processing units for performing different actions of the method flow according to an embodiment of the present invention.

[0137] In RAM 803, various programs and data required for the operation of the electronic device are stored. The processor 801, ROM 802 and RAM 803 are connected to each other via a bus 804. The processor 801 performs various operations of the method flow according to the embodiment of the present invention by executing the programs in ROM 802 and / or RAM 803. It should be noted that the program can also be stored in one or more memories other than ROM 802 and RAM 803. The processor 801 can also perform various operations of the method flow according to the embodiment of the present invention by executing the programs stored in the one or more memories.

[0138] According to an embodiment of the present invention, the electronic device may further include an input / output (I / O) interface 805, which is also connected to the bus 804. The electronic device may further include one or more of the following components connected to the input / output (I / O) interface 805: an input portion 806 including a keyboard, a mouse, etc.; an output portion 807 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker, etc.; a storage portion 808 including a hard disk, etc.; and a communication portion 809 including a network interface card such as a LAN card, a modem, etc. The communication portion 809 performs communication processing via a network such as the Internet. A drive 810 is also connected to the input / output (I / O) interface 805 as needed. A removable medium 811, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is installed on the drive 810 as needed, so that the computer program read therefrom is installed into the storage portion 808 as needed.

[0139] According to an embodiment of the present invention, the method flow according to an embodiment of the present invention can be implemented as a computer software program. For example, an embodiment of the present invention includes a computer program product, which includes a computer program carried on a computer-readable storage medium, and the computer program includes a program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication part 809, and / or installed from the removable medium 811. When the computer program is executed by the processor 801, the above-mentioned functions defined in the system of the embodiment of the present invention are executed. According to an embodiment of the present invention, the system, equipment, device, module, unit, etc. described above can be implemented by a computer program module.

[0140] The present invention also provides a computer-readable storage medium, which may be included in the device / apparatus / system described in the above embodiment; or may exist independently without being assembled into the device / apparatus / system. The above computer-readable storage medium carries one or more programs, and when the above one or more programs are executed, the method according to the embodiment of the present invention is implemented.

[0141] According to an embodiment of the present invention, the computer-readable storage medium may be a non-volatile computer-readable storage medium. For example, it may include but is not limited to: a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof. In the present invention, the computer-readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, an apparatus or a device.

[0142] For example, according to an embodiment of the present invention, the computer-readable storage medium may include the ROM 802 and / or the RAM 803 described above and / or one or more memories other than the ROM 802 and the RAM 803 .

[0143] An embodiment of the present invention also includes a computer program product, which includes a computer program, which contains program code for executing the method provided by the embodiment of the present invention. When the computer program product runs on an electronic device, the program code is used to enable the electronic device to implement the substation secondary circuit verification method provided by the embodiment of the present invention.

[0144] When the computer program is executed by the processor 801, the above functions defined in the system / device of the embodiment of the present invention are executed. According to the embodiment of the present invention, the system, device, module, unit, etc. described above can be implemented by a computer program module.

[0145] In one embodiment, the computer program may rely on tangible storage media such as optical storage devices, magnetic storage devices, etc. In another embodiment, the computer program may also be transmitted and distributed in the form of signals on a network medium, and downloaded and installed through the communication part 809, and / or installed from a removable medium 811. The program code contained in the computer program may be transmitted using any appropriate network medium, including but not limited to: wireless, wired, etc., or any suitable combination of the above.

[0146] According to an embodiment of the present invention, the program code for executing the computer program provided by the embodiment of the present invention can be written in any combination of one or more programming languages. Specifically, these computing programs can be implemented using high-level process and / or object-oriented programming languages, and / or assembly / machine languages. Programming languages ​​include, but are not limited to, Java, C++, python, "C" language or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, partially on the remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device can be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., using an Internet service provider to connect through the Internet).

[0147] The flowcharts and block diagrams in the accompanying drawings illustrate the possible architecture, functions and operations of the systems, methods and computer program products according to various embodiments of the present invention. In this regard, each box in the flowchart or block diagram may represent a module, a program segment, or a part of a code, and the above-mentioned module, program segment, or a part of the code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the box may also occur in an order different from the order marked in the accompanying drawings. For example, two boxes represented in succession can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, depending on the functions involved. It should also be noted that each box in the block diagram or flowchart, and the combination of boxes in the block diagram or flowchart, can be implemented with a dedicated hardware-based system that performs the specified function or operation, or can be implemented with a combination of dedicated hardware and computer instructions. It can be understood by those skilled in the art that the features recorded in the various embodiments of the present invention can be combined and / or combined in various ways, even if such a combination or combination is not explicitly recorded in the present invention. In particular, without departing from the spirit and teachings of the present invention, the features recorded in the various embodiments of the present invention can be combined and / or combined in various ways. All these combinations and / or combinations fall within the scope of the present invention.

[0148] The embodiments of the present invention are described above. However, these embodiments are only for the purpose of illustration, and are not intended to limit the scope of the present invention. Although each embodiment is described above, it does not mean that the measures in each embodiment cannot be used in combination advantageously. Without departing from the scope of the present invention, those skilled in the art may make various substitutions and modifications, which should all fall within the scope of the present invention.

Claims

1. A substation secondary circuit verification method, characterized in that: The method comprises: Based on the secondary circuit wiring diagram of the substation, identifying the secondary circuit topology of the substation; Based on the secondary circuit topology structure, generating a terminal connection relationship configuration table, wherein the terminal connection relationship configuration table includes a starting terminal list, wherein the starting terminal list includes a plurality of starting terminal codes; Perform loop verification based on the starting terminal list to obtain a feedback terminal configuration table; Performing a matching check on the terminal connection relationship configuration table and the feedback terminal configuration table to obtain a secondary circuit check result of the substation; The loop check is performed based on the starting terminal list to obtain a feedback terminal configuration table, including: For each starting terminal code, injecting a characteristic signal into a first terminal corresponding to the starting terminal code to determine a second terminal where a feedback signal exists; determining a loop state detection result between the first terminal and the second terminal based on a signal strength of a feedback signal from the second terminal; The feedback terminal configuration table is constructed based on the start terminal code, the feedback terminal code of the second terminal, and the loop state detection result between the first terminal and the second terminal.

2. The substation secondary circuit verification method according to claim 1, characterized in that: The determining, based on the signal strength of the feedback signal of the second terminal, a loop state detection result between the first terminal and the second terminal includes: When the signal strength of the feedback signal of the second terminal is greater than or equal to a first threshold, determining that the loop state detection result is characterized as a loop conduction between the first terminal and the second terminal; When the signal strength of the feedback signal of the second terminal is less than the first threshold, it is determined that the loop state detection result is characterized as a loop disconnection between the first terminal and the second terminal.

3. The substation secondary circuit verification method according to claim 2, characterized in that: The constructing the feedback terminal configuration table based on the starting terminal code, the feedback terminal code of the second terminal, and the loop state detection result between the first terminal and the second terminal includes: When the loop state detection result indicates that the loop between the first terminal and the second terminal is connected, adding the start terminal code and the feedback terminal code of the second terminal to the feedback terminal configuration table; When the loop state detection result indicates that the loop between the first terminal and the second terminal is disconnected, the starting terminal code and the preset code are added to the feedback terminal configuration table.

4. The substation secondary circuit verification method according to claim 2, characterized in that: The method further comprises: When the signal strength of the feedback signal of the second terminal is greater than or equal to the first threshold and less than a second threshold, feedback information indicating that a loop between the first terminal and the second terminal has a defect is generated.

5. The substation secondary circuit verification method according to claim 1, characterized in that: The substation includes a plurality of panel cabinets, the panel cabinets include a plurality of terminal blocks, the terminal blocks include a plurality of terminals, and the secondary circuit topology structure of the substation includes the connection relationship between the plurality of terminals included in the substation.

6. The substation secondary circuit verification method according to claim 5, characterized in that: The terminal connection relationship configuration table includes a start terminal list and an end terminal list, and the end terminal list includes a plurality of end terminal codes; Wherein, generating a terminal connection relationship configuration table based on the secondary circuit topology structure includes: For each terminal, based on the terminal row and the panel cabinet to which the terminal belongs, the terminal is coded to obtain the starting terminal code of the terminal; Based on the secondary circuit topology, determining a target terminal connected to the terminal; Based on the terminal block and the panel cabinet to which the target terminal belongs, the target terminal is encoded to obtain the terminal terminal code of the terminal; The terminal connection relationship configuration table is generated based on the start terminal codes and the end terminal codes of each of the plurality of terminals included in the substation.

7. The substation secondary circuit verification method according to any one of claims 1 to 6, characterized in that: The matching verification of the terminal connection relationship configuration table and the feedback terminal configuration table to obtain the secondary circuit verification result of the substation includes: A plurality of first connection relationship tuples are obtained by parsing from the feedback terminal configuration table to form a first set, wherein the first connection relationship tuples include a start terminal code and a feedback terminal code; Parsing the terminal connection relationship configuration table to obtain a plurality of second connection relationship tuples to form a second set, wherein the second connection relationship tuples include a start terminal code and an end terminal code; Based on the inclusion relationship between the first set and the second set, a secondary circuit verification result of the substation is obtained.

8. The substation secondary circuit verification method according to claim 7, characterized in that: The obtaining the secondary circuit verification result of the substation based on the inclusion relationship between the first set and the second set includes: In the case where it is determined that the first set is equal to the second set, determining that the secondary circuit verification result of the substation is characterized as the substation passing the verification; In the case where it is determined that the first set includes the second set, determining that the secondary circuit verification result of the substation is characterized as multiple connections of lines of the substation; In the case where it is determined that the second set includes the first set, determining that the secondary circuit verification result of the substation is characterized as a line missing connection of the substation; When it is determined that there is no inclusion relationship between the first set and the second set, and the number of the first connection relationship tuples is equal to the number of the second connection relationship tuples, determining that the secondary circuit verification result of the substation is characterized as a line misconnection of the substation; When it is determined that there is no inclusion relationship between the first set and the second set, and the number of the first connection relationship tuples is less than the number of the second connection relationship tuples, determining that the secondary circuit verification result of the substation is characterized as misconnection and missing of the lines of the substation; When it is determined that there is no inclusion relationship between the first set and the second set, and the number of the first connection relationship tuples is greater than the number of the second connection relationship tuples, it is determined that the secondary circuit verification result of the substation is characterized by wrong and multiple connections of the lines of the substation.

9. A substation secondary circuit verification device, characterized in that: The device comprises: An identification module, used for identifying a secondary circuit topology structure of the substation based on a secondary circuit wiring diagram of the substation; A generating module, configured to generate a terminal connection relationship configuration table based on the secondary circuit topology structure, wherein the terminal connection relationship configuration table includes a starting terminal list, wherein the starting terminal list includes a plurality of starting terminal codes; A determination module, configured to perform loop verification based on the starting terminal list to obtain a feedback terminal configuration table; A verification module, used to perform a matching verification on the terminal connection relationship configuration table and the feedback terminal configuration table to obtain a secondary circuit verification result of the substation; Wherein, the determination module is configured as follows: For each starting terminal code, injecting a characteristic signal into a first terminal corresponding to the starting terminal code to determine a second terminal where a feedback signal exists; determining a loop state detection result between the first terminal and the second terminal based on a signal strength of a feedback signal from the second terminal; The feedback terminal configuration table is constructed based on the start terminal code, the feedback terminal code of the second terminal, and the loop state detection result between the first terminal and the second terminal.

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