CN110703135B - Full study and judgment method for fault handling of power distribution network - Google Patents
Full study and judgment method for fault handling of power distribution network Download PDFInfo
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- CN110703135B CN110703135B CN201910991340.8A CN201910991340A CN110703135B CN 110703135 B CN110703135 B CN 110703135B CN 201910991340 A CN201910991340 A CN 201910991340A CN 110703135 B CN110703135 B CN 110703135B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/145—Indicating the presence of current or voltage
- G01R19/155—Indicating the presence of voltage
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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
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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
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
Abstract
The invention relates to a power distribution network fault disposal full-research and judgment method. The method comprises the steps of establishing a set of fault types transversely covering the power distribution network in a DMS system, covering common faults of the power distribution network, such as short-circuit faults, phase failure faults, bus voltage loss, earth loss faults, line heavy overload and the like, carrying out distribution network fault processing services according to the set of fault types, and longitudinally communicating a full-judging fault processing closed-loop management flow in the processes of fault sensing, fault analysis, isolation power transfer, fault first-aid repair, power transmission operation, ending and the like; after the DMS system receives the alarm information of various faults, the DMS system carries out active fault study and judgment perception after analyzing and identifying the effectiveness of the fault signals, and comprehensively analyzes the study and judgment results, thereby being convenient for commanding the operations of site search, isolation, transfer, supply and the like. The method can realize full-type decision, full-information monitoring, full-online management and control and full-flow control of the power distribution network faults, further improve the processing efficiency and the management and control strength of the power distribution network faults, and comprehensively improve the safety, high efficiency and standard management level of power distribution network operation and fault handling.
Description
Technical Field
The invention belongs to the field of power distribution automation of a power system, and particularly relates to a full study and judgment method for fault handling of a power distribution network.
Background
In recent years, the power distribution automation master station system is developed to initially realize the through of operation and distribution data, the considerable controllability of the running state of the power distribution network and the study and judgment application of short-circuit faults of multi-source information, and the automation level of the power distribution network is effectively improved. But the fault flow is not standard enough, the fault research and judgment coverage is insufficient, the fault handling efficiency is not high, the process safety control is weak, and the post analysis and evaluation are difficult. In order to realize the construction target of 'full study and judgment and full remote control', deepen the functional application of a fault perception and fault processing functional module of a power distribution automation system, particularly perform full study and judgment construction of power distribution network fault handling, realize a closed-loop fault full-flow management system which transversely covers all types of faults of the power distribution network and longitudinally runs through the whole processes of fault perception, fault location, fault isolation, fault power transfer, power restoration and the like through the fusion of all service modules in the fault perception and fault handling, provide technical support for efficient and rapid fault handling, and improve the management level.
Disclosure of Invention
The invention aims to provide a power distribution network fault treatment full-research and judgment method, which comprehensively analyzes fault types such as short-circuit faults, earth faults, phase failure faults, bus voltage loss, line heavy overload and the like by a power distribution automation system, combines the functions of fault treatment processes such as fault sensing, fault analysis, isolation power transfer, fault emergency repair, power transmission operation, ending and the like to perform information interaction and fusion to form a closed-loop fault treatment full-research and judgment full-process management system, realizes comprehensive display and application of multi-element fault information, and supports decision of full-type fault treatment.
In order to achieve the purpose, the technical scheme of the invention is as follows: a full study and judgment method for fault handling of a power distribution network comprises the following steps:
step S1, detecting a power distribution network signal;
step S2, the distribution automation master station system researches and judges different faults according to the detected distribution network signals;
step S3, the distribution automation master station system positions a trip point and a fault section during fault according to the analyzed fault, analyzes information including a real-time power supply topology and a common contact board according to the fault section, and provides a fault isolation and supply transfer auxiliary decision scheme through load calculation to give a specific equipment operation sequence;
step S4, analyzing downstream power failure users by the power distribution automation master station system according to the execution condition of the specific equipment operation sequence, providing a power failure user list, and communicating an information interaction channel with the OMS to realize the rolling update of the power failure range;
step S5, the distribution automation master station system records the field work content in the fault first-aid repair link, selects specific safety measure information, triggers and calls an intelligent ticket forming module, and intelligently generates a power transmission instruction ticket according to an isolation and power transfer auxiliary decision scheme;
step S6, in the fault processing process, the distribution automation master station system identifies remote control failure, missing report and false report conditions, pushes a list related to a secondary device to a defect management process, and provides the processing conditions of interface tracking defects and the process nodes;
and step S7, after the whole fault processing is finished, generating a complete and structural post analysis report including fault brief report, time consumption of fault processing and research and evaluation by the power distribution automation master station system aiming at the fault.
In an embodiment of the present invention, the faults involved in step S2 include a short-circuit fault, an open-phase fault, a bus voltage loss, a ground loss fault, and a line heavy overload.
In an embodiment of the present invention, in the step S3, the distribution automation master station system completes positioning of the trip point and the fault section during the fault through a comprehensive analysis module.
In an embodiment of the present invention, the distribution automation master station system supports log recording of an entire fault handling process, supports addition and deletion of records, establishes an interaction channel with the GOMS system, and supports synchronization of fault records to a fault processing module of the GOMS system.
In an embodiment of the present invention, in the step S5, in a failure emergency repair link, safety measure information audit and safety measure information addition are supported.
In an embodiment of the present invention, in step S6, the power distribution automation master station system identifies remote control failure information during the process of power transmission, ground fault trial, isolated power transfer, or safety measure execution, and after entering a fault point, automatically analyzes the situations of missing report and false report by combining with the terminal operation characteristics, pushes a list of related secondary devices to the defect management process, and provides a processing situation of interface tracking defects, thereby realizing control of the failure progress.
Compared with the prior art, the invention has the following beneficial effects:
1. the power distribution network fault is fully covered, and the sensing capability of the fault is improved.
2. The method has the advantages that the guided scene design of the fault handling interface is realized through dispatcher fault handling logic, the whole fault handling process is realized, and the management and control strength and level of the fault are improved.
3. The whole process of fault handling is graphical, and operation graphing of fault information, fault point setting, an isolation power conversion scheme, ground loss test pulling, safety measure execution and the like is achieved.
4. The distribution network scheduling fault handling links are one-by-one corresponding to the process, and the process of handling the faults improves the efficiency of handling the faults.
5. Getting through the barriers between systems, realizing the function of multi-information fusion, realizing the timely release of fault information and fault notification through GOMS and SG186 interfaces
6. And the intelligent aid decision scheme analyzes and calculates, and the scheduling work intensity is reduced.
The invention provides a power distribution network fault disposal full study and judgment method, which is correct and effective as shown by practical application, realizes full type decision, full information monitoring, full online control and full flow control of power distribution network faults, further improves the processing efficiency and control strength of the power distribution network faults, deepens the function application of a power distribution automation system, and comprehensively improves the safety, high efficiency and standard management level of power distribution network operation and fault disposal.
Detailed Description
The following specifically describes the technical means of the present invention.
The invention provides a power distribution network fault disposal full-research and judgment method, which comprises the following steps:
1) a set of full-type faults of a transverse coverage power distribution network is established in a DMS system, such as common short-circuit faults, phase failure faults, bus voltage loss, earth loss faults, line heavy overload faults and the like of the power distribution network.
2) And the distribution automation main station system researches and judges different fault disposal schemes according to different sensing signals.
3) The distribution automation master station system automatically analyzes information such as real-time power supply topology and common contact boards according to the analyzed fault section, intelligently deduces a fault isolation and supply transfer auxiliary decision scheme through load calculation, gives a specific equipment operation sequence and supports graphical display of the operation sequence.
4) The distribution automation master station system provides a one-key sequence control function for the fault isolation power conversion plan, and automatic sequential remote control of the remote control equipment list is realized after the dispatching examination and approval confirms that the plan is correct.
5) The distribution automation master station system automatically analyzes downstream power failure users according to the execution condition of the operation sequence, provides a power failure user list, and communicates with an information interaction channel between the OMS to realize the rolling update of the power failure range.
6) The distribution automation master station system supports log recording of the whole fault handling process, comprises fault records of types such as fault notification, search isolation, faults, emergency repair permission, emergency repair completion, power transmission operation, fault brief description and the like, establishes an interaction channel with the GOMS system, and supports the fault records to be synchronized to a fault processing module of the GOMS system.
7) The distribution automation master station system supports dispatching and completes recording of field work content and can select specific safety measure information in a fault first-aid repair ring, and the node supports triggering and calling of the intelligent ticketing module. And intelligently generating a power transmission instruction ticket according to the isolation power conversion scheme.
8) In the fault processing process, the system identifies remote control failure, missed report and false report conditions, pushes a list of related primary and secondary equipment to a defect management process, and provides the processing condition of an interface tracking defect, namely the process node where the interface tracking defect is located.
9) After the whole fault processing is finished, the power distribution automation master station system generates a complete and structural after-the-fact analysis report aiming at the fault, wherein the after-the-fact analysis report comprises a plurality of dimensions such as fault brief report, time consumed by fault processing, research and judgment evaluation and the like.
In the step 1), the whole process of the power distribution network full-type fault is covered and the whole fault processing process is run through, and fault handling process management is realized according to information interaction among process nodes.
In the step 2), a comprehensive analysis module for research and judgment is added to the distribution automation master station system to complete analysis and positioning of a trip point and a fault interval during fault.
In the step 3), the distribution automation master station system combines the analyzed fault point information with information such as a real-time operation mode and a common contact board, calculates a real-time load, automatically deduces a fastest and minimum combined fault isolation power conversion scheme and a corresponding operation sequence, and supports graphical identification of equipment operation sequences on a single-line diagram and a ring network diagram.
In the step 4), for the fault isolation power conversion scheme, the power distribution automation system realizes one-button sequential remote control of the equipment according to the operation steps and equipment controllability analysis. Safety locking logic is added before one-key sequential remote control, so that misoperation is prevented.
In the step 5), during the execution of the operation sequence of isolation and supply transfer, the distribution automation master station system can automatically analyze the downstream power failure users through topology live-line analysis, provide a list of the power failure users, and run through an information interaction channel with the GOMS to realize the rolling update of the power failure range.
In the step 6), the distribution automation master station system supports log recording of the whole fault handling process, supports record addition and deletion, establishes an interactive channel with the GOMS system, and supports fault recording to be synchronized to a fault processing module of the GOMS system.
In the step 7), in a fault first-aid repair link, safety measure auditing and safety measure adding are supported. After the fault first-aid repair is finished, the equipment operation condition and the safety measure execution condition of the isolated power transfer are combined, and a power transmission instruction ticket can be intelligently generated by a manual trigger power distribution automation system according to the fault isolated power transfer scheme operation sequence.
In the step 8), in the process of fault first-aid repair, the system identifies remote control failure information in the processes of strong power transmission, ground fault trial pull, isolation power transfer or safety measure execution, automatically analyzes the situations of missing report and false report by combining the operation characteristics of the terminal after a fault point is input, pushes a related secondary equipment list to a defect management flow, provides the processing situation of interface tracking defects, and realizes the control of the vacancy progress.
In the step 9), after the fault disposal, the distribution automation master station system generates a complete and structural post-event analysis report for the fault, including multi-dimensional evaluation information such as fault brief report, time consumed for fault disposal, and study and judgment evaluation.
The invention has the characteristics that:
the invention relates to a power distribution network fault disposal full-research and judgment method. The method comprises the steps of establishing a set of fault types transversely covering the power distribution network in a DMS system, covering common faults of the power distribution network, such as short-circuit faults, phase failure faults, bus voltage loss, earth loss faults, line heavy overload and the like, carrying out distribution network fault processing services according to the set of fault types, and longitudinally communicating a full-judging fault processing closed-loop management flow in the processes of fault sensing, fault analysis, isolation power transfer, fault first-aid repair, power transmission operation, ending and the like; after the DMS system receives the alarm information of various faults, the DMS system carries out active fault study and judgment perception after analyzing and identifying the effectiveness of the fault signals, and comprehensively analyzes the study and judgment results, thereby being convenient for commanding the operations of site search, isolation, transfer, supply and the like. For a dead-ground fault, the dead-ground point determination can be performed through various trial pull schemes. For phase failure, the phase failure point can be positioned according to the phase by combining the distribution and transformation three-phase voltage measurement of the downstream of the line. For large-area power failure caused by bus voltage loss, the system comprehensively considers a scheme of converting large-area power supply into power supply according to a system operation mode and the controllable condition of a terminal. The DMS system automatically analyzes the real-time topology according to the information of the positioned fault point or the loss point, the phase failure point, the overload point and the trip point, and provides a power failure information release and isolation power conversion plan; the DMS system provides a one-key sequence control function for the fault isolation power conversion plan, and adds a safety locking logic in the aspect of anti-misoperation to realize automatic sequential remote control on a remote control equipment list after the dispatching confirms that the plan is correct; the DMS system provides a function of manually setting fault points for positioning errors and scheme errors in the fault sensing and isolation power conversion processes, and re-releases a fault isolation power conversion scheme based on the current real-time operation mode after the fault points are set; the DMS is communicated with the GOMS information interaction, the DMS system sends the fault power failure information to the GOMS, and the latest power failure range is dynamically synchronized to the GOMS in real time in the fault handling process; the DMS system supports and dispatches the record of relevant fault information and the selection of safety measure equipment in a fault emergency repair ring section, and supports the collection of the record information to a fault recording module; the safety measure support reads the safety measure information in the electronic fault first-aid repair list, and is convenient for safety check of field operation matters in scheduling. The DMS system can generate a scheduling instruction ticket when the emergency maintenance is finished and the power transmission is finished according to the fault isolation power conversion scheme and the safety measure, and realizes the related operation of the scheduling instruction when the power transmission is finished; after the whole fault processing is finished, the system automatically pushes out a structural and multidimensional analysis evaluation report.
The above are preferred embodiments of the present invention, and all changes made according to the technical scheme of the present invention that produce functional effects do not exceed the scope of the technical scheme of the present invention belong to the protection scope of the present invention.
Claims (6)
1. A full study and judgment method for fault handling of a power distribution network is characterized by comprising the following steps:
step S1, detecting a power distribution network signal;
step S2, the distribution automation master station system researches and judges different faults according to the detected distribution network signals;
step S3, the distribution automation master station system positions a trip point and a fault section during fault according to the analyzed fault, analyzes information including a real-time power supply topology and a common contact board according to the fault section, and provides a fault isolation and supply transfer auxiliary decision scheme through load calculation to give a specific equipment operation sequence; the distribution automation master station system provides a one-key sequence control function for the fault isolation power conversion plan, and realizes automatic sequential remote control of a remote control equipment list after the dispatching approval confirms that the plan is correct;
step S4, analyzing downstream power failure users by the power distribution automation master station system according to the execution condition of the specific equipment operation sequence, providing a power failure user list, and communicating an information interaction channel with the OMS to realize the rolling update of the power failure range;
step S5, the distribution automation master station system records the field work content in the fault first-aid repair link, selects specific safety measure information, triggers and calls an intelligent ticket forming module, and intelligently generates a power transmission instruction ticket according to an isolation and power transfer auxiliary decision scheme;
step S6, in the fault processing process, the distribution automation master station system identifies remote control failure, missing report and false report conditions, pushes a list related to a secondary device to a defect management process, and provides the processing conditions of interface tracking defects and the process nodes;
and step S7, after the whole fault processing is finished, generating a complete and structural post analysis report including fault brief report, time consumption of fault processing and research and evaluation by the power distribution automation master station system aiming at the fault.
2. The method for fully studying fault handling of power distribution network according to claim 1, wherein the faults involved in step S2 include short circuit fault, phase failure fault, bus voltage loss, earth loss fault, and line overload.
3. The method according to claim 1, wherein in step S3, the distribution automation master station system completes locating the trip point and the fault section during fault through a comprehensive analysis module.
4. The method of claim 1, wherein the distribution automation master station system supports logging of the whole process of fault handling, supports recording addition and deletion, establishes an interaction channel with the GOMS system, and supports synchronization of fault recording to a fault processing module of the GOMS system.
5. The method for fully studying and judging the fault handling of the power distribution network according to claim 1, wherein in the step S5, in a fault emergency repair link, safety measure information auditing and safety measure information adding are supported.
6. The method for fully studying and judging the fault handling of the power distribution network according to claim 1, wherein in step S6, the power distribution automation master station system identifies remote control failure information during the execution of strong power transmission, ground fault trial pull, isolated power transfer or safety measure, and after a fault point is entered, the conditions of missing report and false report are automatically analyzed by combining with the operation characteristics of a terminal, a list of related secondary devices is pushed to a defect management process, and the processing condition of interface tracking defects is provided, so that the control of the failure progress is realized.
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| CN113640601B (en) * | 2021-07-30 | 2022-11-08 | 国网福建省电力有限公司 | Power distribution network fault research and judgment post analysis system and method |
| CN114325224B (en) * | 2021-12-14 | 2023-09-22 | 国网浙江省电力有限公司电力科学研究院 | Fault interval positioning method based on distribution network real-time data |
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