Method and system for judging consistency of multiple protection actions for fault information processing

Abstract

The present invention discloses a method and system for determining the consistency of multiple protection actions for fault information processing. The method comprises: S1, establishing a regular expression template library for the fault information names of different types of protection devices in a fault information system; S2, matching the protection fault information with the regular expression; S3, determining action consistency based on the matching result and time difference. The system comprises: a template library establishment device for establishing a regular expression template library for the fault information names of different types of protection devices in the fault information system; a fault information matching device for matching the protection fault information with the regular expression; and an action consistency determination device for determining action consistency based on the matching result and time difference. The present invention enables determination of different types of protection and timely analysis and processing of fault information.

Description

Technical Field

[0001] The present invention relates to the technical field of relay protection, and in particular to a method and system for judging consistency of multiple protection actions for fault information processing. Background Art

[0002] As power grids expand, the use of intelligent devices in power systems is becoming increasingly widespread. Sometimes, an incident is caused by a single, localized malfunction. If this malfunction information isn't promptly and effectively fed back to power system maintenance personnel, the fault can become difficult to control. Sometimes, even a single localized fault can trigger a cascading failure in the power system, potentially leading to a widespread power outage. Therefore, how to quickly detect system malfunctions or faults, minimize the outage area, and implement timely and effective measures to restore power based on fault information identification and evaluation is a pressing issue for power systems. In this context, relay protection fault information systems have been implemented. These systems enable unified access and centralized management of a large number of microcomputer-based protection devices, fault recorders, and other intelligent devices from different manufacturers, types, and protocols. As the number of connected relay protection devices increases, the number of various protection and automatic devices in power systems is also increasing. Therefore, minimizing manpower investment and ensuring consistent identification of different protection devices has become a critical issue.

[0003] The relay protection and fault information processing system can fully utilize the device information of the entire power system. Under conditions such as single-source faults, multi-source fault malfunctions, and information transmission distortion, it can not only quickly and accurately diagnose various faults in the power grid, then give the cause of the fault and evaluate the results of the secondary equipment operation, but also identify abnormal operation of the power grid, thereby creating more favorable conditions for power grid recovery after the fault. At present, when making consistency judgments, single-ended consistency judgment is mostly used. Some single-ended judgments use the same type of protection, and the names of various signals are consistent. The signal names are directly used for matching, and then the action time of the signal is compared to see if it exceeds the threshold to determine whether the action is consistent.

[0004] When a power system fault occurs, the grid dispatch center can access a large amount of data through power communication equipment, enabling dispatchers to make decisions, analyze and address the incident, and restore normal system operations. Currently, the judgment of different types of protection devices is mostly based on manual judgment, manually identifying different signals and checking the consistency of actions. This method hinders the timely analysis and processing of fault information. Summary of the Invention

[0005] In view of this, an object of an embodiment of the present invention is to provide a method and system for judging consistency of multiple protection actions for fault information processing, which can realize judgment of different types of protection and timely analysis and processing of fault information.

[0006] In a first aspect, an embodiment of the present invention provides a method for determining consistency of multiple protection actions for fault information processing, which includes:

[0007] S1, establish a regular expression template library for the fault information names of different types of protection devices in the fault information system.

[0008] S2, matches the protected fault information with a regular expression.

[0009] S3, judging the consistency of the action based on the matching result and the time difference.

[0010] In combination with the first aspect, an embodiment of the present invention provides a first possible implementation of the first aspect, wherein, in S1, establishing a regular expression template library of fault information names of different types of protection devices in the fault information system includes:

[0011] S11, classifying various types of fault information according to the protection type, protection action information of the main protection, tripping information and characteristic quantities of the pre-initialized fault information model.

[0012] S12, storing the obtained fault information name of the protection device in a template library using a regular expression.

[0013] In combination with the first aspect, an embodiment of the present invention provides a second possible implementation of the first aspect, wherein, in S11, the classification of various types of fault information based on the protection type, protection action information of the primary protection, tripping information, and characteristic quantity of the pre-initialized fault information model includes:

[0014] S111, according to the protection type, classify the current fault information into primary protection or backup protection.

[0015] S112, classifying the current fault information according to the main protection action signal and the backup protection signal in the main protection, the action time characteristics and the protection area.

[0016] S113, according to the tripping information, the current fault information is divided into three trips: A, B, and C.

[0017] S114: Classify the current fault information into different fault phase types according to the characteristic quantities.

[0018] In combination with the first aspect, an embodiment of the present invention provides a third possible implementation of the first aspect, wherein, in S2, matching the protected fault information with a regular expression includes:

[0019] S21, match the plant stations at both ends according to the line name or number, collect the protection devices at each end respectively, and perform consistency judgment on the matching of the protection devices.

[0020] S22, classify and store the fault information collected by the relay protection fault information master station system according to the secondary equipment to which it belongs and the primary equipment to which the secondary equipment belongs.

[0021] S23: Accurately match the fault information of all secondary equipment in the primary backup category with the regular expression in the template library, and store them according to the level corresponding to the regular expression. The data of each level is sorted by time.

[0022] In combination with the first aspect, an embodiment of the present invention provides a fourth possible implementation of the first aspect, wherein, in S3, judging the consistency of the action based on the matching result and the time difference includes:

[0023] S31, for the multiple protection of each plant station at both ends when the line fails, first perform consistency comparison on each end, and then perform consistency comparison on both ends after confirming consistency.

[0024] S32, compare the fault phase, trip information and action information to determine the consistency of the action.

[0025] In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein in S32, comparing the fault phase, trip information, and action information to determine action consistency includes:

[0026] S321, first compare the fault phases, only compare whether the fault phases A, B, and C are consistent, without comparing the time.

[0027] S322: If the fault phases are consistent, then compare the tripping information, comparing both the phases and the difference in tripping time with the threshold to determine consistency.

[0028] S323, if the tripping information is consistent, then compare the action information, first compare the levels, if there is inconsistency in the levels, it is judged as inconsistent action, after the levels are consistent, compare the time difference of the first signal of each level with the threshold, if it is consistent, it is considered that the protection action is consistent.

[0029] In a second aspect, an embodiment of the present invention further provides a multiple protection action consistency judgment system for fault information processing, which includes:

[0030] The template library establishing device is used to establish a regular expression template library of fault information names of different types of protection devices in the fault information system.

[0031] The fault information matching device is used to match the protected fault information with a regular expression.

[0032] The action consistency judgment device is used to judge the action consistency based on the matching result and the time difference.

[0033] In conjunction with the second aspect, an embodiment of the present invention provides a first possible implementation of the second aspect, wherein the template library establishment device includes:

[0034] The classification module is used to classify various types of fault information according to the protection type of the pre-initialized fault information model, the protection action information of the main protection, the tripping information and the characteristic quantity.

[0035] The storage module is used to store the obtained fault information name of the protection device in a template library using a regular expression.

[0036] In conjunction with the second aspect, an embodiment of the present invention provides a second possible implementation of the second aspect, wherein the classification module includes:

[0037] The protection type classification unit is used to classify the current fault information into primary protection or backup protection according to the protection type.

[0038] The main protection classification unit is used to classify the current fault information according to the main protection action signal and backup protection signal in the main protection, the action time characteristics and the protection area.

[0039] The trip classification unit is used to classify the current fault information into three types: A, B, and C according to the trip information.

[0040] The feature quantity classification unit is used to classify the current fault information into different fault phase types according to the feature quantity.

[0041] In combination with the second aspect, an embodiment of the present invention provides a third possible implementation of the second aspect, wherein the fault information matching device includes:

[0042] The device matching module is used to match the plant stations at both ends according to the line name or number, collect the protection devices at each end, and perform consistency judgment on the matching of protection devices.

[0043] The fault equipment classification module is used to classify and store the fault information collected by the relay protection fault information master station system according to the secondary equipment to which it belongs and the primary equipment to which the secondary equipment belongs.

[0044] The fault matching module is used to accurately match the fault information of the secondary equipment class in all primary backup classes with the regular expressions in the template library, and store them according to the level corresponding to the regular expression. The data of each level is sorted by time.

[0045] In combination with the second aspect, an embodiment of the present invention provides a fourth possible implementation of the second aspect, wherein the action consistency judgment device includes:

[0046] The double-end device comparison module is used for the multiple protection of each plant station at both ends when a line fault occurs. The consistency comparison of each end is first performed, and then the double-end consistency comparison is performed after the consistency is confirmed.

[0047] The fault information comparison module is used to compare the fault phase, trip information and action information to determine the consistency of the action.

[0048] In combination with the second aspect, an embodiment of the present invention provides a fifth possible implementation of the second aspect, wherein the fault information comparison module includes:

[0049] The fault phase comparison unit is used to compare the fault phase first, and only compare whether the A, B, and C phases of the fault are consistent, without comparing the time.

[0050] The trip information comparison unit is used to compare the trip information when the fault phases are consistent, comparing the phases and judging the consistency by comparing the difference in trip time with the threshold.

[0051] The action information comparison unit is used to compare the action information when the tripping information is consistent. First, the levels are compared. If there is inconsistency in the levels, it is judged as inconsistent action. After the levels are consistent, the time difference of the first signal of each level is compared with the threshold. If it is judged to be consistent, it is considered that the protection action is consistent.

[0052] The beneficial effects of the embodiments of the present invention are:

[0053] The present invention can judge the protection of different types and timely analyze and process fault information by establishing a protection fault information regular expression template library, fault information category and level classification, and peer information matching to judge the consistency of protection actions. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0055] Figure 1This is a flow chart of a method for determining consistency of multiple protection actions for fault information processing according to the present invention;

[0056] Figure 2 The figure is a structural diagram of the multiple protection action consistency judgment system for fault information processing of the present invention. DETAILED DESCRIPTION

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0058] Please refer to Figure 1 A first embodiment of the present invention provides a method for determining consistency of multiple protection actions for fault information processing, which includes:

[0059] S1, establish a regular expression template library for the fault information names of different types of protection devices in the fault information system.

[0060] S2, matches the protected fault information with a regular expression.

[0061] S3, judging the consistency of the action based on the matching result and the time difference.

[0062] In S1, the establishment of a regular expression template library for fault information names of different types of protection devices in the fault information system includes:

[0063] S11, classifying various types of fault information according to the protection type, protection action information of the main protection, tripping information and characteristic quantities of the pre-initialized fault information model.

[0064] S12, storing the obtained fault information name of the protection device in a template library using a regular expression.

[0065] In S11, the various types of fault information are classified according to the protection type, protection action information of the main protection, tripping information and characteristic quantity of the pre-initialized fault information model, including:

[0066] S111, according to the protection type, classify the current fault information into primary protection or backup protection.

[0067] S112, based on the main protection action signal and backup protection signal in the main protection, according to the action time characteristics and protection area, the current fault information is classified into multiple levels from 1 to n, among which the fast action protection action information is level 1, its backup distance protection is level 2, and the distance backup is level 3. The major levels are further divided into smaller levels.

[0068] S113, according to the tripping information, the current fault information is divided into three trips: A, B, and C.

[0069] S114: Classify the current fault information into different fault phase types according to the characteristic quantities.

[0070] In S2, the regular expression matching of the fault information to be protected includes:

[0071] S21, match the plant stations at both ends according to the line name or number, collect the protection devices at each end respectively, and perform consistency judgment on the matching of the protection devices.

[0072] S22, the fault information collected by the relay protection fault information master station system is classified and stored according to the secondary equipment to which it belongs and the primary equipment to which the secondary equipment belongs, and the primary equipment class and the secondary equipment class are established with the primary equipment and the secondary equipment class as key values respectively. Only the secondary equipment class of this primary equipment is stored under the primary equipment class, and the secondary equipment class stores all fault information of the secondary equipment.

[0073] S23: Accurately match the fault information of all secondary equipment in the primary backup category with the regular expression in the template library, and store them according to the level corresponding to the regular expression. The data of each level is sorted by time.

[0074] In S3, judging the consistency of the actions based on the matching result and the time difference includes:

[0075] S31, for the multiple protection of each plant station at both ends when the line fails, first perform consistency comparison on each end, and then perform consistency comparison on both ends after confirming consistency.

[0076] S32, compare the fault phase, trip information and action information to determine the consistency of the action.

[0077] Among them, in S32, the comparison of the fault phase, trip information and action information to determine the consistency of the action includes:

[0078] S321, first compare the fault phases, only compare whether the fault phases A, B, and C are consistent, without comparing the time.

[0079] S322: If the fault phases are consistent, then compare the tripping information, comparing both the phases and the difference in tripping time with the threshold to determine consistency.

[0080] S323, if the tripping information is consistent, then compare the action information, first compare the levels, if there is inconsistency in the levels, it is judged as inconsistent action, after the levels are consistent, compare the time difference of the first signal of each level with the threshold, if it is consistent, it is considered that the protection action is consistent.

[0081] Please refer to Figure 2 A second embodiment of the present invention provides a multiple protection action consistency judgment system for fault information processing, which includes:

[0082] The template library establishing device is used to establish a regular expression template library of fault information names of different types of protection devices in the fault information system.

[0083] The fault information matching device is used to match the protected fault information with a regular expression.

[0084] The action consistency judgment device is used to judge the action consistency based on the matching result and the time difference.

[0085] Wherein, the template library establishing device includes:

[0086] The classification module is used to classify various types of fault information according to the protection type of the pre-initialized fault information model, the protection action information of the main protection, the tripping information and the characteristic quantity.

[0087] The storage module is used to store the obtained fault information name of the protection device in a template library using a regular expression.

[0088] Wherein, the classification module includes:

[0089] The protection type classification unit is used to classify the current fault information into primary protection or backup protection according to the protection type.

[0090] The main protection classification unit is used to classify the current fault information according to the main protection action signal and backup protection signal in the main protection, the action time characteristics and the protection area.

[0091] The trip classification unit is used to classify the current fault information into three types: A, B, and C according to the trip information.

[0092] The feature quantity classification unit is used to classify the current fault information into different fault phase types according to the feature quantity.

[0093] Wherein, the fault information matching device includes:

[0094] The device matching module is used to match the plant stations at both ends according to the line name or number, collect the protection devices at each end, and perform consistency judgment on the matching of protection devices.

[0095] The fault equipment classification module is used to classify and store the fault information collected by the relay protection fault information master station system according to the secondary equipment to which it belongs and the primary equipment to which the secondary equipment belongs.

[0096] The fault matching module is used to accurately match the fault information of the secondary equipment class in all primary backup classes with the regular expressions in the template library, and store them according to the level corresponding to the regular expression. The data of each level is sorted by time.

[0097] Wherein, the action consistency judgment device includes:

[0098] The double-end device comparison module is used for the multiple protection of each plant station at both ends when a line fault occurs. The consistency comparison of each end is first performed, and then the double-end consistency comparison is performed after the consistency is confirmed.

[0099] The fault information comparison module is used to compare the fault phase, trip information and action information to determine the consistency of the action.

[0100] Wherein, the fault information comparison module includes:

[0101] The fault phase comparison unit is used to compare the fault phase first, and only compare whether the A, B, and C phases of the fault are consistent, without comparing the time.

[0102] The trip information comparison unit is used to compare the trip information when the fault phases are consistent, comparing the phases and judging the consistency by comparing the difference in trip time with the threshold.

[0103] The action information comparison unit is used to compare the action information when the tripping information is consistent. First, the levels are compared. If there is inconsistency in the levels, it is judged as inconsistent action. After the levels are consistent, the time difference of the first signal of each level is compared with the threshold. If it is judged to be consistent, it is considered that the protection action is consistent.

[0104] The embodiments of the present invention are intended to provide a method and system for determining consistency of multiple protection actions for fault information processing, which has the following effects:

[0105] The present invention can judge the protection of different types and timely analyze and process fault information by establishing a protection fault information regular expression template library, fault information category and level classification, and peer information matching to judge the consistency of protection actions.

[0106] The computer program product of the method and device for determining consistency of multiple protection actions for fault information processing provided in the embodiment of the present invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the method in the previous method embodiment. For specific implementation, please refer to the method embodiment and will not be repeated here.

[0107] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program on the storage medium is run, it can execute the above-mentioned multiple protection action consistency judgment method for fault information processing, thereby realizing the judgment of different types of protection and timely analysis and processing of fault information.

[0108] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present invention. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0109] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above-described embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above-described embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. Such modifications, changes, or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A method for determining consistency of multiple protection actions for fault information processing, characterized in that: include: S1, establishing a regular expression template library for fault information names of different types of protection devices in the fault information system, including: S11, classifying various types of fault information according to the protection type, protection action information of the main protection, tripping information and characteristic quantities of the pre-initialized fault information model; S12, storing the obtained fault information name of the protection device in a template library using a regular expression; S2, matching the protection fault information with a regular expression, classifying and storing it according to the level corresponding to the regular expression, and sorting the data of each level by time; S3, based on the matching results and time difference, determines the consistency of the action, including: S31, for the multiple protection of each plant station at both ends of the line when the line fails, first compare the consistency of each end, and then perform a consistency comparison on both ends after confirming consistency; S32, compare the fault phase, trip information and action information, and determine the consistency of the action, including: S321, first compare the fault phases, only comparing whether the fault phases A, B, and C are consistent, without comparing the time; S322, if the fault phases are consistent, then compare the trip information, comparing both the phases and the difference in trip time with the threshold to determine consistency; S323, if the tripping information is consistent, then compare the action information, first compare the levels, if there is inconsistency in the levels, it is judged as inconsistent action, after the levels are consistent, compare the time difference of the first signal of each level with the threshold, if it is consistent, it is considered that the protection action is consistent.

2. The method for determining consistency of multiple protection actions for fault information processing according to claim 1, characterized in that: In S11, the various types of fault information are classified according to the protection type, protection action information of the main protection, tripping information and characteristic quantity of the pre-initialized fault information model, including: S111, classify the current fault information into primary protection or backup protection according to the protection type; S112, classifying the current fault information according to the main protection action signal and the backup protection signal in the main protection, the action time characteristics and the protection area; S113, according to the tripping information, the current fault information is divided into three trips: A, B, and C; S114: Classify the current fault information into different fault phase types according to the characteristic quantities.

3. The method for determining consistency of multiple protection actions for fault information processing according to claim 1, characterized in that: In S2, the fault information to be protected is matched with a regular expression, including: S21, matching the power plants at both ends according to the line name or number, collecting the protection devices at each end, and performing consistency judgment on the matching of the protection devices; S22, classifying and storing the fault information collected by the relay protection fault information master station system according to the secondary equipment to which it belongs and the primary equipment to which the secondary equipment belongs; S23: Accurately match the fault information of all secondary equipment in the primary backup category with the regular expression in the template library, and store them according to the level corresponding to the regular expression. The data of each level is sorted by time.

4. A multiple protection action consistency judgment system for fault information processing, characterized in that: include: A template library building device for building a regular expression template library of fault information names of different types of protection devices in the fault information system; The template library establishment device includes: a classification module for classifying various types of fault information according to the protection type, protection action information of the main protection, tripping information and characteristic quantity of the pre-initialized fault information model; a storage module for storing the obtained fault information name of the protection device in the template library in the form of a regular expression; Fault information matching device, used to match the protected fault information with regular expressions, classify and store them according to the level corresponding to the regular expressions, and sort the data of each level by time; An action consistency judgment device is used to judge the action consistency based on the matching result and the time difference; the action consistency judgment device includes: a double-end device comparison module, which is used to compare the consistency of each end of the multiple protection of each plant station at both ends when a line fault occurs, and then perform double-end consistency comparison after confirming the consistency; a fault information comparison module, which is used to compare the fault phase, tripping information and action information to judge the action consistency, and the fault information comparison module includes: a fault phase comparison unit, which is used to first compare the fault phase, only compare whether the A, B, and C phases of the fault are consistent, and do not compare the time; a tripping information comparison unit, which is used to compare the tripping information when the fault phase is consistent, and compare both the phase and the difference in tripping time with the threshold to judge the consistency; an action information comparison unit, which is used to compare the action information when the tripping information is consistent, and first compare the levels. If there is inconsistency in the levels, it is judged as inconsistent action. After the levels are consistent, the time difference of the first signal of each level is compared with the threshold. If it is judged to be consistent, it is considered that the protection action is consistent.

5. The multiple protection action consistency judgment system for fault information processing according to claim 4 is characterized in that: The classification module includes: The protection type classification unit is used to classify the current fault information into primary protection or backup protection according to the protection type; The main protection classification unit is used to classify the current fault information according to the main protection action signal and backup protection signal in the main protection, the action time characteristics and the protection area; The trip classification unit is used to classify the current fault information into three types: A, B, and C according to the trip information; The feature quantity classification unit is used to classify the current fault information into different fault phase types according to the feature quantity.

6. The multiple protection action consistency judgment system for fault information processing according to claim 4 is characterized in that: The fault information matching device includes: The device matching module is used to match the plant stations at both ends according to the line name or number, collect the protection devices at each end, and perform consistency judgment on the matching of protection devices; The fault equipment classification module is used to classify and store the fault information collected by the relay protection fault information master station system according to the secondary equipment to which it belongs and the primary equipment to which the secondary equipment belongs; The fault matching module is used to accurately match the fault information of the secondary equipment class in all primary backup classes with the regular expressions in the template library, and store them according to the level corresponding to the regular expression. The data of each level is sorted by time.

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