Method and device for correcting fault phase of relay protection fault information system and master station

Abstract

The present application relates to relay protection and safety automatic device on-line monitoring and analysis system, especially relates to a kind of correcting relay protection fault information system fault phase alternative method, device and master station.The method of the present application is by comparing the fault phase alternative information sent on the two sides of fault line, when the fault phase alternative information sent on the two sides is inconsistent, with the inconsistent part of the fault phase alternative information sent on the two sides as interference information, correcting the fault phase alternative information sent on the side containing interference information to be consistent with the fault phase alternative information on the other side.The method of the present application will not affect the authenticity of the fault phase alternative obtained by the master station, and can make the fault phase alternative information sent on both ends of the fault phase obtained by the master station consistent, thereby solving the problem of inaccurate fault report data of the existing relay protection fault information system.

Description

Technical Field

[0001] This invention relates to an online monitoring and analysis system for relay protection and automatic safety devices, and in particular to a method, device, and master station for correcting fault phase identification in a relay protection fault information system. Background Technology

[0002] With the continuous development of information technology and the deepening application of the relay protection fault information master station system (hereinafter referred to as "the master station"), users have put forward higher requirements for the system's business functions, system security, stability, and access capabilities. In modern power systems, the electricity consumption of a region relies on the power supply provided by substations. One of the most important pieces of equipment in a substation is the relay protection device. However, the manufacturers of relay protection devices in substations are not entirely the same. When a fault occurs, some protection systems can accurately transmit the fault phase, while others may first transmit the correct fault phase and then transmit a reset signal. This reset signal can cause interference, resulting in inconsistencies in the fault phase transmitted at both ends of the substation. For double-ended faults on a line, if the fault phases transmitted at both ends of the substation are inconsistent, it will affect the fault analysis at the master station, leading to inaccurate fault report data.

[0003] When maintenance personnel or experts at the Baoxin main station discover an error in the fault phase classification in a fault report, they need to manually edit the fault report to correct the incorrect fault phase. Manually modifying the fault phase classification in the fault report is not only inefficient but also introduces a delay in the displayed data. Furthermore, when a similar fault occurs again on the same line, it is still necessary to manually modify the fault phase classification in the fault report. Summary of the Invention

[0004] The purpose of this invention is to provide a method for correcting the fault phase identification in a relay protection fault information system, so as to solve the problem of inaccurate fault report data in existing relay protection fault information systems.

[0005] Meanwhile, the present invention also aims to provide a fault phase identification device for a modified relay protection fault information system and a master station for a relay protection fault information system that uses the above-mentioned modified relay protection fault phase identification method.

[0006] To solve the above problems, the automatic correction method for fault phase identification in the relay protection fault information system of the present invention adopts the following technical solution: the method for correcting fault phase identification in the relay protection fault information system compares the fault phase identification information sent from both sides of the fault line. When the fault phase identification information sent from both sides is inconsistent, the inconsistent part of the fault phase identification information sent from both sides is used as interference information to correct the fault phase identification information sent from the side containing interference information to be consistent with the fault phase identification information from the other side.

[0007] Beneficial effects: The method of the present invention improves the existing method of generating fault report data by fault phase identification in relay protection fault information systems. Before the fault phase information at both ends of the fault phase is uploaded to the master station, the inconsistent information at both ends of the fault phase is preprocessed. This preprocessing uses the inconsistent parts of the fault phase identification information uploaded by both sides as interference information, and corrects the fault phase identification information uploaded by the side containing interference information to be consistent with the fault phase identification information of the other side. Based on the characteristics of existing relay protection, the above preprocessing actually erases the reset signal of the relay protection device, and does not affect the authenticity of the fault phase identification obtained by the master station. Moreover, it can make the fault phase identification information uploaded by both ends of the fault phase obtained by the master station consistent, thereby solving the problem of inaccurate fault report data in existing relay protection fault information systems.

[0008] Furthermore, the comparison and correction of fault phases transmitted from both sides of the faulty line are performed periodically. Performing the comparison and correction of fault phases transmitted from both sides of the faulty line periodically makes the comparison and correction more regular and easier to automate.

[0009] Furthermore, the comparison and correction of the faulty phases transmitted from both sides of the faulty line are carried out at fixed intervals.

[0010] Furthermore, the fixed cycle is 24 hours. This cycle is consistent with the cycle in which the main station generates fault reports, thus better matching the operation of the main station.

[0011] Furthermore, the comparison of fault phases reported from both sides of the faulty line is performed between 11 PM and midnight (excluding midnight) each day. If the correction procedure were executed between 8 PM and 9 PM, fault reports submitted before 9 PM would be processed, but those submitted after 9 PM would not. Therefore, to maximize the coverage of the correction procedure, it is best to schedule it between 11 PM and midnight (excluding midnight). Correcting the fault phase information during this time period helps improve the accuracy of the correction report data.

[0012] Furthermore, while correcting the fault phase information, a correction record is stored. This record can be reviewed by experts or maintenance personnel to prevent further problems caused by incorrect reported data.

[0013] The fault phase identification device for the modified relay protection fault information system of the present invention adopts the following technical solution: The fault phase identification device for the modified relay protection fault information system includes a memory and a processor. The processor is used to execute program instructions in the memory to realize the fault phase identification method for the modified relay protection fault information system of the present invention.

[0014] The relay protection fault information system master station of the present invention adopts the following technical solution: the relay protection fault information system master station includes the fault phase identification device of the modified relay protection fault information system of the present invention. Attached Figure Description

[0015] Figure 1 This is a flowchart of the fault phase identification method for the automatic correction relay protection fault information system of the present invention. Detailed Implementation

[0016] The features and performance of the present invention will be further described in detail below with reference to embodiments.

[0017] Example 1 of the fault phase identification method for the modified relay protection fault information system of the present invention:

[0018] This method can automatically correct the fault phase information in the relay protection fault information system. Specifically, it compares the fault phase information sent from both sides of the faulty line. When the fault phase information sent from both sides is inconsistent, the inconsistent parts of the fault phase information sent from both sides are used as interference information. The fault phase information sent from the side containing the interference information is then corrected to match the fault phase information sent from the other side. This ensures that the fault phase information sent to the master station from both sides of the faulty line is consistent, enabling the master station to accurately identify the fault phase and generate an accurate fault report.

[0019] like Figure 1 As shown, the specific method is as follows: Based on the SpringBoot + Quartz scheduled task framework, the fault packets of both ends of the line are polled at 23:00 every day. First, it is determined whether the fault phases sent by both sides of the faulty line are consistent. If they are inconsistent, the fault phase correction logic needs to correct the incorrect fault phase. For example, on the 220kV Jianxue line, which is associated with Xuehai Station and Jiankang Station respectively, at the time of the fault, Xuehai Station sends two fault phase information messages: one is phase A fault, and the other is a reset signal ABCG three-phase ground fault mistakenly sent by the protection. However, Jiankang Station on the opposite side of the line only sends one fault phase information message, phase A fault. The system will automatically remove the fault phase ABCG three-phase ground fault message from Xuehai Station through intelligent identification program, and correct the fault phase of Xuehai Station to phase A fault. The detailed steps of the fault phase correction system based on intelligent library for automatic correction of relay protection fault information are as follows:

[0020] 1. Start a scheduled task using Spring Boot + Quartz to poll the list of faulty packages on both ends of the network at 11 PM every day;

[0021] 2. Query detailed fault information in the fault event information table based on the fault package name, including action events, waveform recording notifications, etc.;

[0022] 3. Extract the fault phase from the fault details and determine whether the fault phases at both ends of the line are consistent. If they are inconsistent, call the [Fault Phase Correction Logic] to correct the fault phases on both sides of the line to be consistent, and record the correction log data in the intelligent database table (the intelligent database table fields include fault package name, substation name, protection PT_ID (PT is voltage transformer, ID is identification number), fault phase X, fault phase Y, corrected actual fault phase, and update time). At the same time, update the "Automatic Fault Phase Correction Field" in the fault package table (0: no correction needed, 1: waiting for correction, 2: corrected) and change its value to "1".

[0023] 4. Start a new scheduled task to poll the fault package table every 30 minutes for records where the fault phase awaiting automatic correction has a value of "1";

[0024] 5. Then, based on the fault package name and protection PT_ID, query the value of the "corrected actual fault phase" field in the intelligent database table, and synchronously update the value of "corrected actual fault phase" to the fault package details table;

[0025] 6. Modify the "Automatic Fault Phase Correction Field Status" in the fault package table, changing the status value to "2";

[0026] Assuming that the two ends of the line are connected to substations A and B respectively, if the fault phases on the substation A side are X and ABCG respectively and the fault phase on the substation B side is X, then the fault phase of substation A will be corrected to X.

[0027] If the fault phase on the A side of the plant is X and the fault phases on the B side are X and ABCG, then the fault phase on the B side will be corrected to X.

[0028] The above correction logic and Figure 1 In this case, X represents any one of A, B, C, AB, AC, BC, ABC, AG, BG, CG, ABG, ACG, and BCG.

[0029] Example 2 of the fault phase identification method for the modified relay protection fault information system of the present invention:

[0030] In Embodiment 1 of the fault phase identification method of the fault protection fault information system of the present invention, the comparison and correction of the fault phase identification information on both sides of the faulty line is performed with a fixed cycle of 24 hours. The difference between this embodiment and Embodiment 1 is that in this embodiment, the comparison and correction of the fault phase identification information on both sides of the faulty line is performed with a non-fixed cycle. For example, the cycles for three consecutive comparisons and corrections are 5 hours, 7 hours and 11 hours respectively, which can realize multiple comparisons and corrections per day.

[0031] Example 3 of the fault phase identification method for the modified relay protection fault information system of the present invention:

[0032] In Embodiment 1 of the fault phase identification method of the fault protection fault information system of the present invention, the comparison and correction of the fault phase identification information on both sides of the faulty line is carried out on a fixed cycle of 24 hours. The difference between this embodiment and Embodiment 1 is that in this embodiment, the comparison and correction of the fault phase identification information on both sides of the faulty line is carried out by manual instructions given at irregular intervals.

[0033] Example 4 of the fault phase identification method for the modified relay protection fault information system of the present invention:

[0034] In Embodiment 1 of the fault phase identification method for the fault information system of the present invention, the comparison and correction of the fault phase identification information on both sides of the faulty line is performed at 23:00 every day. The difference between this embodiment and Embodiment 1 is that the comparison and correction of the fault phase identification information on both sides of the faulty line can be performed at any time from 23:00 to midnight the next day.

[0035] Embodiments of the fault phase identification device of the modified relay protection fault information system of the present invention:

[0036] The fault phase identification device of the modified relay protection fault information system includes a memory and a processor. The processor is used to execute program instructions in the memory to implement the fault phase identification method of the modified relay protection fault information system of the present invention, which will not be described in detail here.

[0037] An embodiment of the relay protection fault information system master station of the present invention:

[0038] The main station of the relay protection fault information system includes the fault phase identification device of the modified relay protection fault information system of the present invention, which will not be described in detail here.

Claims

1. A method for identifying fault phases in a fault information system for relay protection, characterized in that, This method compares the fault phase information sent by the substations at both ends of the faulty line. When the fault phase information sent by the two substations is inconsistent, the inconsistent part of the fault phase information sent by the two substations is recorded as interference information. For substations whose fault phase information contains interference information, the interference information in the fault phase information sent by that substation is deleted, so that the fault phase information sent by the substations at both ends of the faulty line is consistent.

2. The method for identifying fault phases in a fault information system for corrected relay protection according to claim 1, characterized in that, The comparison and correction of the faulty phases sent by the substations at both ends of the faulty line are carried out periodically.

3. The method for identifying fault phases in a modified relay protection fault information system according to claim 2, characterized in that, The comparison and correction of the faulty phases sent by the substations at both ends of the faulty line are carried out at fixed intervals.

4. The method for identifying fault phases in a modified relay protection fault information system according to claim 3, characterized in that, The fixed cycle is 24 hours.

5. The method for identifying fault phases in a modified relay protection fault information system according to claim 4, characterized in that, The comparison of the fault phases transmitted from the substations at both ends of the faulty line is carried out from 11 PM to midnight the following day.

6. The method for identifying fault phases in a modified relay protection fault information system according to any one of claims 1-5, characterized in that, While correcting the fault phase information, the correction record is stored.

7. A fault phase identification device for a fault information system for modified relay protection, characterized in that, The device includes a memory and a processor. The processor executes program instructions in the memory to implement a fault phase identification method for correcting relay protection fault information systems. This method compares the fault phase identification information sent by the substations at both ends of the faulty line. When the fault phase identification information sent by the two substations is inconsistent, the inconsistent parts of the fault phase identification information sent by the two substations are recorded as interference information. For substations whose fault phase identification information contains interference information, the interference information in the fault phase identification information sent by that substation is deleted to make the fault phase identification information sent by the substations at both ends of the faulty line consistent.

8. The fault phase identification device for the fault information system of the corrected relay protection according to claim 7, characterized in that, The comparison and correction of the faulty phases sent by the substations at both ends of the faulty line are carried out periodically.

9. The fault phase identification device for the fault information system of the modified relay protection according to claim 8, characterized in that, The comparison and correction of the faulty phases sent by the substations at both ends of the faulty line are carried out at fixed intervals.

10. The fault phase identification device for the corrected relay protection fault information system according to claim 9, characterized in that, The fixed cycle is 24 hours.

11. The fault phase identification device for the corrected relay protection fault information system according to claim 10, characterized in that, The comparison of the fault phases transmitted from the substations at both ends of the faulty line is carried out from 11 PM to midnight the following day.

12. The fault phase identification device for the modified relay protection fault information system according to any one of claims 7-11, characterized in that, While correcting the fault phase information, the correction record is stored.

13. A relay protection fault information system master station, characterized in that, The device includes a fault phase identification device for correcting relay protection fault information systems. This device comprises a memory and a processor. The processor executes program instructions stored in the memory to implement a fault phase identification method for correcting relay protection fault information systems. This method compares the fault phase identification information sent by the substations at both ends of the faulty line. When the fault phase identification information sent by the two substations is inconsistent, the inconsistent portion is recorded as interference information. For substations whose fault phase identification information contains interference information, the interference information is deleted from the fault phase identification information sent by that substation, ensuring that the fault phase identification information sent by the substations at both ends of the faulty line is consistent.

14. The relay protection fault information system master station according to claim 13, characterized in that, The comparison and correction of the faulty phases sent by the substations at both ends of the faulty line are carried out periodically.

15. The relay protection fault information system master station according to claim 14, characterized in that, The comparison and correction of the faulty phases sent by the substations at both ends of the faulty line are carried out at fixed intervals.

16. The relay protection fault information system master station according to claim 15, characterized in that, The fixed cycle is 24 hours.

17. The relay protection fault information system master station according to claim 16, characterized in that, The comparison of the fault phases transmitted from the substations at both ends of the faulty line is carried out from 11 PM to midnight the following day.

18. The relay protection fault information system master station according to any one of claims 14-17, characterized in that, While correcting the fault phase information, the correction record is stored.

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