CN112285469A - Relay protection fault processing method - Google Patents
Relay protection fault processing method Download PDFInfo
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- CN112285469A CN112285469A CN202011149772.3A CN202011149772A CN112285469A CN 112285469 A CN112285469 A CN 112285469A CN 202011149772 A CN202011149772 A CN 202011149772A CN 112285469 A CN112285469 A CN 112285469A
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- 238000000034 method Methods 0.000 claims abstract description 25
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- 230000005540 biological transmission Effects 0.000 claims abstract description 8
- 238000007689 inspection Methods 0.000 claims abstract description 8
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- 230000009286 beneficial effect Effects 0.000 abstract description 2
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- 238000004458 analytical method Methods 0.000 description 13
- 238000012544 monitoring process Methods 0.000 description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
A relay protection fault processing method relates to a relay protection fault processing technology and aims to solve the problem that a relay protection fault cannot be processed in time after the relay protection fault occurs. The invention relates to a relay protection fault processing method, which comprises the following steps: analyzing a relay protection fault by utilizing fault information to obtain a fault reason; step two, verifying the fault reason analyzed in the step one by using a sequence inspection method, a whole group transmission test method or a reverse sequence inspection method; if the verification is passed, executing a third step; otherwise, returning to execute the first step; and step three, processing the relay protection fault. The method has the beneficial effect that the relay protection fault can be timely and accurately processed.
Description
Technical Field
The invention relates to a relay protection fault processing technology.
Background
With the rapid development of the power industry in China, the structure of a power system is increasingly complex, and various problems can occur in the operation process of the power system, so that various relay protection faults are frequent; the fault processing of the relay protection not only relates to the principle and components of the relay protection, but also can be determined by the experience of processing the relay protection fault on site: the occurrence and processing processes of most relay protection faults are closely related to the processes of design, infrastructure, installation and debugging; therefore, the basic principle and the theory of microcomputer relay protection, which are necessary and mastered, are prerequisites for analyzing and processing faults, but the basic principle and the theory of microcomputer relay protection have enough field experience to determine accurate analysis and qualitative fault.
The processing of the relay protection fault not only relates to an operation unit and related personnel, but also needs to find out the reason causing the fault immediately once the protection device fails or malfunctions, try to find out the source of the problem, then make a precautionary measure in a targeted manner, and take the reverse action to avoid the replay of similar faults; generally, related data and basic information after a relay protection fault occurs may be modified or lost due to irresistible human factors, a certain trouble is brought to fault analysis invisibly, even the reason cannot be found out, and the relay protection fault cannot be solved in time.
Disclosure of Invention
The invention aims to solve the problem that a relay protection fault cannot be processed in time after the relay protection fault occurs, and provides a relay protection fault processing method.
The invention relates to a relay protection fault processing method, which comprises the following steps:
analyzing a relay protection fault by utilizing fault information to obtain a fault reason;
step two, verifying the fault reason analyzed in the step one by using a sequence inspection method, a whole group transmission test method or a reverse sequence inspection method; if the verification is passed, executing a third step; otherwise, returning to execute the first step;
and step three, processing the relay protection fault.
The invention has the beneficial effects that: by the aid of the processing method, the fault finding speed can be increased, the relay protection fault can be quickly determined, and the relay protection fault can be timely and accurately processed.
Drawings
Fig. 1 is a flowchart of a relay protection fault processing method according to a first embodiment.
Detailed Description
The first embodiment is as follows: the present embodiment is described with reference to fig. 1, and a relay protection fault processing method according to the present embodiment is characterized by including:
analyzing a relay protection fault by utilizing fault information to obtain a fault reason;
step two, verifying the fault reason analyzed in the step one by using a sequence inspection method, a whole group transmission test method or a reverse sequence inspection method; if the verification is passed, executing a third step; otherwise, returning to execute the first step;
and step three, processing the relay protection fault.
In this embodiment, in the relay protection fault mode, the fault information that we can obtain is from many sources, such as on-site protection device panel signal light indication information, trip signal relay information, protection device event record and message information, fault recorder recording waveform and information, monitoring system background information, measurement and control device information, and protection manager (protection management information substation) information, which are important bases for relay protection fault processing and need to be carefully analyzed.
The second embodiment is as follows: in this embodiment, the method for processing a relay protection fault in the first step is further limited, and in this embodiment, the fault information used in the first step specifically includes one or both of fault information used in the secondary system device and fault information used in the primary system device.
In the embodiment, the secondary equipment information indication is used for judging whether the primary equipment has a fault or not, which is a common thinking mode of fault analysis of the electrical equipment; when the primary equipment is actually faulty or the secondary equipment is mistakenly operated, the most reasonable method is that the primary equipment and the secondary equipment simultaneously perform fault investigation and analysis work; the necessary checking and detecting work of the primary equipment can save a great deal of time for relay protection workers, provide more valuable information and quickly judge whether the primary equipment has a fault, which is very necessary; the problem of 'relay protection fault processing' does not exist if the relay protection works correctly after the primary equipment fails, and the problem is the problem to be researched and searched if the primary equipment fails to work and the relay protection malfunctions or fails and the relay protection works incorrectly.
In the embodiment, the operation and maintenance of various secondary information auxiliary equipment are emphasized, the normal working conditions of the equipment are ensured, the modern microcomputer protection has good event recording function and fault recording function, and the protection special fault recorder is more powerful and convenient to use; how to make these devices play a role in the investigation process after the fault depends on whether their working conditions are normal when the fault occurs; the running condition of the special fault recorder is crucial to the analysis of some complex faults; the protection device often pays attention to the alarm problems of abnormity, locking and the like of the device, once the routing inspection program of the protection device detects the fault of software or hardware, an alarm signal is sent to a monitoring system to remind operators to pay attention to; operation and maintenance personnel pay attention to the fault warning information, so that the protection device has good operation condition; however, the fault oscillographs are different, because the focus of the fault oscillograph is wave recording and many fault oscillographs on site are just one computer, the hardware fault alarm and software fault alarm capabilities are far inferior to those of a protection device, especially software fault alarm. The software program of the fault recorder is expected to send an alarm signal after being 'dead' but the problem is difficult to solve under the actual condition; in addition, the integrated automation transformer substation pays attention to the GPS time synchronization problem of various secondary devices, and the accurate and uniform absolute time of fault occurrence is very important for correctly and quickly reading message information of various devices and quickly processing faults; especially, the significance of analyzing and processing regional power grid faults is greater. The fault information of the protection device can not replace the information of the special fault recorder; the special fault recorder has great difference with the protection device in the aspects of sampling frequency, pre-filtering, starting mode and the like, so the fault information of the protection device can not replace the information of the special fault recorder; in particular, in some complex fault analysis processes of a high-voltage power grid, the information of a special fault recorder is the first information of fault analysis. For example, the transient problem analysis, the harmonic problem analysis and the oscillation problem analysis of the high-voltage system are mainly based on the recording information of a special fault recorder. Therefore, the method can be used for carefully analyzing various fault information, removing the false and true, and is a basic element for fault analysis and processing. The relay protection staff should be able to accurately and skillfully use the relevant equipment to quickly and accurately retrieve fault information from the relevant equipment such as a protection device, a fault recorder and the like, and is a basic skill for relay protection fault processing. Therefore, relay protection workers can be skilled in mastering the use of various related devices, including remote transmission and calling of a fault recorder and format conversion; the remote checking of monitoring information, the calling of data network information and the like, and the skillful application of the functions has great significance for accelerating fault analysis, improving the fault processing speed of a power grid and quickly recovering power supply. Recording and backing up secondary system fault information; after the failure reason is determined to be caused by two times, the original state is maintained as much as possible, and the recording and backup work of the failure information is well done. And after preliminary analysis is carried out and a fault processing plan is formulated, subsequent work is carried out so as to prevent the original state information from being damaged and bring unnecessary trouble to fault processing.
The third concrete implementation mode: in this embodiment, the whole set of transmission test methods is to check whether the logic function of the relay protection device is correct and to check whether the operation time of the relay protection device is correct.
In the embodiment, the main purpose of applying the whole set of transmission test method is to check whether the logic function of the relay protection device is correct or not and whether the action time is correct or not; the entire set of tests can often reproduce the fault, which is important for quickly finding the root cause of the fault.
The fourth concrete implementation mode: in this embodiment, the reverse order checking method is to perform a step-by-step forward search using an operation principle logic diagram of the relay protection device from an incorrect result of the fault, and to confirm whether a condition required for the operation of the electrical protection device matches an actual condition.
In the embodiment, when the relay protection device has a false action phenomenon, the relay protection device and the secondary circuit are effectively checked by using a reverse sequence checking method, the reverse sequence checking method starts from an incorrect result of a fault, a logic diagram of a protection action principle is searched forward in a first-level and first-level manner, and a place where a condition required by the action does not accord with an actual condition is a fault source; the application of the reverse sequence method requires that workers have higher proficiency on protection action principles and secondary circuit wiring and experience similar to fault detection, so that fault finding is usually rapidly progressed.
Claims (4)
1. A relay protection fault processing method is characterized by comprising the following steps:
analyzing a relay protection fault by utilizing fault information to obtain a fault reason;
step two, verifying the fault reason analyzed in the step one by using a sequence inspection method, a whole group transmission test method or a reverse sequence inspection method; if the verification is passed, executing a third step; otherwise, returning to execute the first step;
and step three, processing the relay protection fault.
2. The relay protection fault handling method according to claim 1, wherein the using fault information in the first step specifically includes one or both of fault information using secondary system equipment and fault information using primary system equipment.
3. The relay protection fault handling method according to claim 1, wherein the whole set of transmission testing methods is to check whether a logic function of the relay protection device is correct and to check whether an operation time of the relay protection device is correct.
4. The relay protection fault handling method according to claim 1, wherein the reverse order checking method is to perform a step-by-step forward search by using an operation principle logic diagram of the relay protection device based on an incorrect result of the fault, and to confirm whether a condition required by the operation of the electrical protection device matches an actual condition.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011149772.3A CN112285469A (en) | 2020-10-23 | 2020-10-23 | Relay protection fault processing method |
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| CN202011149772.3A CN112285469A (en) | 2020-10-23 | 2020-10-23 | Relay protection fault processing method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202939209U (en) * | 2012-12-10 | 2013-05-15 | 衡水供电公司 | Multiway switch transmission tripping outlet signal detection device |
| CN104795804A (en) * | 2015-03-17 | 2015-07-22 | 国家电网公司 | Auxiliary relay protection monitoring processing system and processing method thereof |
| CN106372735A (en) * | 2016-09-06 | 2017-02-01 | 北京四方继保自动化股份有限公司 | Relay protection state evaluation method |
| CN208028514U (en) * | 2018-03-16 | 2018-10-30 | 深圳供电局有限公司 | A kind of relay protection fault Integrated Processing Unit |
| CN110672969A (en) * | 2019-11-05 | 2020-01-10 | 国网黑龙江省电力有限公司电力科学研究院 | On-site line protection device field test system |
-
2020
- 2020-10-23 CN CN202011149772.3A patent/CN112285469A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202939209U (en) * | 2012-12-10 | 2013-05-15 | 衡水供电公司 | Multiway switch transmission tripping outlet signal detection device |
| CN104795804A (en) * | 2015-03-17 | 2015-07-22 | 国家电网公司 | Auxiliary relay protection monitoring processing system and processing method thereof |
| CN106372735A (en) * | 2016-09-06 | 2017-02-01 | 北京四方继保自动化股份有限公司 | Relay protection state evaluation method |
| CN208028514U (en) * | 2018-03-16 | 2018-10-30 | 深圳供电局有限公司 | A kind of relay protection fault Integrated Processing Unit |
| CN110672969A (en) * | 2019-11-05 | 2020-01-10 | 国网黑龙江省电力有限公司电力科学研究院 | On-site line protection device field test system |
Non-Patent Citations (2)
| Title |
|---|
| 李渊文: "电力系统中继电保护事故原因分析及处理技术", 《科技创新与应用》 * |
| 王艳: "浅谈火力发电厂继电保护的检测与维修", 《机电信息》 * |
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Application publication date: 20210129 |