CN104101814A - Line fault accurate location method based on distribution automation system - Google Patents
Line fault accurate location method based on distribution automation system Download PDFInfo
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- CN104101814A CN104101814A CN201410347911.1A CN201410347911A CN104101814A CN 104101814 A CN104101814 A CN 104101814A CN 201410347911 A CN201410347911 A CN 201410347911A CN 104101814 A CN104101814 A CN 104101814A
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Abstract
A line fault accurate location method based on a distribution automation system belongs to the field of fault detection. When a distribution line fails, a distribution automation terminal determines whether a feeder fails according to the collected information and simultaneously receives fault information from a remote distribution terminal; the distribution automation terminal uploads the fault information determined by the distribution automation terminal and the fault information received from the remote distribution terminal to a sub-station, and the sub-station transmits the received fault information to a master station; the master station locates the fault to a position between two remote distribution terminals according to the fault information and performs protection and isolation after the master station receives the fault information transmitted from the sub-station. Meanwhile, the master station restrains and locates the fault between the two remote distribution terminals according to the fault information of the remote distribution terminal and displays the fault position on a GIS (Geographic Information System) system for assisting the location of a fault point. The line fault accurate location method based on the distribution automation system can reduce troubleshooting time of the fault point or the fault position after the line fails, thereby improving the troubleshooting efficiency.
Description
Technical field
The invention belongs to fault detect field, relate in particular to a kind of Fault Locating Method for power circuit.
Background technology
Intelligent distribution network is the inevitable direction of power distribution network development, and the automatism isolation of distribution line failure and fault self-recovery are the characteristic features of intelligent distribution network.
The fault that in fast detecting distribution line, section occurs arbitrarily, excision isolated fault section are the prerequisites that realizes intelligent distribution network; Guaranteeing the non-fault section continued power that power supply is sound, lose the automatic fast recovery of power supply of non-fault section of power supply, realize fault self-recovery, is the key that realizes intelligent distribution network.
Intelligent distribution network automatic fault isolation and fault self-recovery scheme not only meet with the power off time after fault and reduce power failure range shortening electrical network, effectively improve power supply reliability, also will rationally control Distribution Network Equipment investment, improve power distribution network operation and management level.
Present stage China's urban distribution network development level still in meeting the stage of basic load demand, the power supply capacity that improves urban distribution network is the primary goal that current China urban power network planning is built.
In order to adapt to the fast development in city, the transformation of electrical network and enlarging are in full swing in the whole nation, each power grid enterprises strengthen equipment investment dynamics, make every effort to promote mains supply ability, and how science, assess exactly the bulk supply ability of current urban distribution network, correctly evaluate present situation electrical network, the structure of optimized network, the safety and reliability that improves city net power supply, becomes in the urban power network planning construction of current China and has one of problem to be solved.Therefore, power distribution network power supply capacity is carried out to comprehensive comprehensively evaluation work and also just become chasing after at the eyebrows and eyelashes of task.
The problem that power distribution network intellectual monitoring comprises two aspects, that is: the first, power distribution network running state analysis and early warning; The second, fault judgement and location after accident.
Aspect state of electric distribution network analysis, the safe reliability available power supply capacity allowance of power distribution network operation is weighed.At present the assessment of power distribution network power supply capacity is mainly implemented in distribution network planning aspect, less to the on going result of power distribution network power supply capacity allowance in service dynamic evaluation.
Aspect fault judgement and location after power distribution network experience accident, distribution line failure mainly can be divided into short trouble and disconnection fault two classes, this traditional disposal route be take and organized circuit operations staff line walking as main, and by segmentation, trying to draw feeder bar cutter and measure portion bar low pressure side three-phase voltage is that auxiliary method is judged broken string position and short position.When circuit is long or trouble spot is more hidden, adopt said method to determine that the polling cycle of trouble location is longer, cannot meet stable power-supplying, the actual requirement of safe operation.
Therefore, how effectively to realize fast timely judgement and the rapid localization of fault of line fault type, be puzzlement power distribution network dispatcher's a difficult problem always.
Summary of the invention
Technical matters to be solved by this invention is to provide a kind of line fault accurate positioning method based on electrical power distribution automatization system, it is not in the situation that affecting original fault handling pattern, by improving quick localization of fault precision, reduce location, the investigation time of trouble spot after line fault or trouble location, contribute to reduce fault detect difficulty, improve fault handling efficiency.
Technical scheme of the present invention is: a kind of line fault accurate positioning method based on electrical power distribution automatization system is provided, comprise that main website obtains relevant information by each distribution power automation terminal of substation and its subordinate, below each described distribution power automation terminal, be also provided with at least one distant distribution terminal; It is characterized in that: when distribution line breaks down, distribution power automation terminal, according to the information collecting, judges that whether feeder line has fault, receives the failure message from a distant distribution terminal simultaneously; The failure message that distribution power automation terminal judges self and the failure message of receiving from a distant distribution terminal upload to substation, and substation is forwarded to main website after receiving these failure messages; Main website receives after the failure message of the next terminal of substation forwarding, according to these failure messages, carries out localization of fault, navigate between two station terminals, and generation is protected, isolation is moved.
Simultaneously, main website described in it is according to the failure message of a distant distribution terminal, fault coverage is restrained between two distant distribution terminals to location, and abort situation is shown in generalized information system, the location that auxiliary breakdown repair personnel carry out trouble spot or trouble location.
A distant distribution terminal described in it is the distant distribution terminal of single remote signalling type one.
Generalized information system described in it is power system transmission line network geographic information system.
Accurate positioning method described in technical solution of the present invention is not in the situation that affecting original fault handling pattern, by improving localization of fault precision, the location, the investigation time that reduce trouble spot after line fault or trouble location, contribute to reduce fault detect difficulty, improves fault handling efficiency.
Compared with the prior art, advantage of the present invention is:
1. can not affect in the situation of original fault handling pattern, localization of fault precision is provided, obviously reduce the trouble spot investigation time in line fault processing, reduce detection difficulty, improve fault handling efficiency;
By localization of fault between two distant distribution terminals, dwindled greatly the scope of localization of fault, and abort situation can have been shown in generalized information system so that maintenance.
Accompanying drawing explanation
Fig. 1 is method step block scheme of the present invention;
Fig. 2 is the topological structure schematic diagram of electrical power distribution automatization system.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
In Fig. 1, technical scheme of the present invention provides a kind of line fault accurate positioning method based on electrical power distribution automatization system, comprise that main website obtains relevant information by each distribution power automation terminal of substation and its subordinate, below each described distribution power automation terminal, be also provided with at least one distant distribution terminal; It is characterized in that: when distribution line breaks down, described distribution power automation terminal, according to the information collecting, judges that whether feeder line has fault, receives the failure message from a distant distribution terminal simultaneously; The failure message that described distribution power automation terminal judges self and the failure message of receiving from a described distant distribution terminal upload to substation, and substation is forwarded to main website after receiving these failure messages; Main website receives after the failure message of the next terminal of substation forwarding, according to these failure messages, carries out localization of fault, navigate between two distant distribution terminals, and generation is protected, isolation is moved.
Simultaneously, main website described in it is according to the failure message of a distant distribution terminal, fault coverage is restrained between two distant distribution terminals to location, and abort situation is shown in generalized information system, the location that auxiliary breakdown repair personnel carry out trouble spot or trouble location.
A distant distribution terminal described in it is the distant distribution terminal of single remote signalling type one.
GIS described in it (Geographic Information System) system is power system transmission line network geographic information system.
Accurate positioning method described in technical solution of the present invention is not in the situation that affecting original fault handling pattern, by improving localization of fault precision, the location, the investigation time that reduce trouble spot after line fault or trouble location, contribute to reduce fault detect difficulty, improves fault handling efficiency.
In Fig. 2, provided the topological structure of electrical power distribution automatization system, it is arranged on the main website in master-control room or control room topmost, and main website divides into several substations, and under each substation, correspondence is provided with several distant distribution terminals again.
When line failure, distribution power automation terminal can, according to the information collecting, can receive the failure message from a distant distribution terminal simultaneously; Judge whether feeder line breaks down,
The failure message that terminal judges self and the failure message of receiving from a distant distribution terminal upload to substation, and substation can be received these failure messages and is forwarded to main website;
Main website receives the failure message that substation forwards the terminal of coming, and utilizes these failure messages to carry out localization of fault, can navigate to very easily the trouble spot between two station terminals, and action is protected, isolated in generation accordingly;
Main website also further utilizes the failure message of a distant distribution terminal simultaneously, localization of fault, between two distant distribution terminals, is further dwindled to the scope of localization of fault, and abort situation is shown in generalized information system, so that maintenance.
The various device adopting in the present invention, is conventional equipment used in the art, and operation of each equipment, parameter etc. all carry out according to routine operation, there is no special feature.
Because the present invention is according to the failure message of a distant distribution terminal, fault coverage is restrained between two distant distribution terminals to location, can not affect in the situation of original fault handling pattern, localization of fault precision is provided, obviously reduce the trouble spot investigation time in line fault processing, reduce detection difficulty, improve fault handling efficiency.
The present invention can be widely used in operational management and the localization of fault field of power circuit.
Claims (5)
1. the line fault accurate positioning method based on electrical power distribution automatization system, comprise that main website obtains relevant information by each distribution power automation terminal of substation and its subordinate, below each described distribution power automation terminal, be also provided with at least one distant distribution terminal; It is characterized in that:
When distribution line breaks down, distribution power automation terminal, according to the information collecting, judges that whether feeder line has fault, receives the failure message from a distant distribution terminal simultaneously;
The failure message that distribution power automation terminal judges self and the failure message of receiving from a distant distribution terminal upload to substation, and substation is forwarded to main website after receiving these failure messages;
Main website receives after the failure message of the next terminal of substation forwarding, according to these failure messages, carries out localization of fault, navigate between two station terminals, and generation is protected, isolation is moved.
2. according to the line fault accurate positioning method based on electrical power distribution automatization system claimed in claim 1, it is characterized in that described main website is according to the failure message of a distant distribution terminal, fault coverage is restrained between two distant distribution terminals to location, and abort situation is shown in generalized information system to the location that auxiliary breakdown repair personnel carry out trouble spot or trouble location.
3. according to the line fault accurate positioning method based on electrical power distribution automatization system claimed in claim 1, it is characterized in that a described distant distribution terminal is the distant distribution terminal of single remote signalling type one.
4. according to the line fault accurate positioning method based on electrical power distribution automatization system claimed in claim 1, it is characterized in that described generalized information system is power system transmission line network geographic information system.
5. according to the line fault accurate positioning method based on electrical power distribution automatization system claimed in claim 1, it is characterized in that described accurate positioning method is not in the situation that affecting original fault handling pattern, by improving quick localization of fault precision, reduce location, the investigation time of trouble spot after line fault or trouble location, contribute to reduce fault detect difficulty, improve fault handling efficiency.
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| CN201410347911.1A CN104101814A (en) | 2014-07-21 | 2014-07-21 | Line fault accurate location method based on distribution automation system |
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Cited By (3)
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| CN104655989A (en) * | 2015-03-02 | 2015-05-27 | 国电南瑞科技股份有限公司 | Smart meter collecting function based remote inspection method for power outage fields |
| CN104808113A (en) * | 2015-04-30 | 2015-07-29 | 国网黑龙江省电力有限公司鹤岗供电公司 | Intelligent distribution line fault point location method |
| CN110703039A (en) * | 2019-10-18 | 2020-01-17 | 国网浙江宁波市奉化区供电有限公司 | Rapid positioning method for distribution network line fault |
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