CN105896495A - Complementary method for handling fault in distribution network based on dual cable power supply - Google Patents
Complementary method for handling fault in distribution network based on dual cable power supply Download PDFInfo
- Publication number
- CN105896495A CN105896495A CN201610260243.8A CN201610260243A CN105896495A CN 105896495 A CN105896495 A CN 105896495A CN 201610260243 A CN201610260243 A CN 201610260243A CN 105896495 A CN105896495 A CN 105896495A
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- CN
- China
- Prior art keywords
- power supply
- distribution network
- fault
- troubleshooting
- dual cable
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
Abstract
The invention relates to a complementary method for handling a fault in a distribution network based on dual cable power supply. An analysis is conducted for a dual cable power supply distribution network to obtain a solving strategy for differential fault handling. To ensure, as for dual cable power supply, the dual power supply property of users after non-fault recovery is to avoid failure in fault positioning of a distribution network due to false alarm phenomena of dual cable faults, to shield false alarm signals that cannot be confirmed by expanding the scope of isolation and to include a faulty region in the scope of isolation. The invention considers the adaptability of fault handling functions of the dual cable power supply distribution network at this stage, the impact of the trend for special operating modes on a general fault handling logic algorithm, and the general fault handling logic flaws, and ensures wide adaptability and practicability of fault handling of the distribution network, thereby improving the fault handling reliability of the distribution network, shortening the power supply time and providing customer satisfaction.
Description
Technical field
The present invention relates to a kind of distribution network failure treatment technology, relate to the troubleshooting technology in electrical power distribution automatization system, specifically
A kind of based on double cable supplying electricity and power distribution net troubleshooting compensation processes.
Background technology
Distribution network failure of the prior art isolation and service restoration method, be both for general distribution network shelf structure and be analyzed
's.But, owing to power distribution network powering mode is various, under the method for operation that some are special, existing distribution network failure processes
Actual demand cannot be met, it is therefore desirable to provide the distribution network failure treatment technology of differentiation for the special method of operation, with full
The demand of the power distribution network powering mode that foot is continually changing.
Summary of the invention
For solving the deficiencies in the prior art, it is an object of the invention to by double cable supplying electricity and power distribution net faults are analyzed, thus
The method having been resolved troubleshooting under this special method of operation, and supplement technology by differentiation troubleshooting, incorporated
Distribution network failure processes in functional module, meets the demand of present stage distribution network failure disposal ability.
In order to realize above-mentioned target, the present invention adopts the following technical scheme that:
The positive effect of the present invention and advantage be:
A kind of based on double cable supplying electricity and power distribution net troubleshooting compensation processes, it is analyzed for double cable supplying electricity and power distribution nets, obtains difference
Changing the resolution policy of troubleshooting, the dual power supply of user after ensureing non-faulting recovery of powering for double cables avoids double cable fault
The failure of the distribution network failure location that wrong report phenomenon causes, by expanding isolation range, will be unable to the false positive signal shielding confirmed,
Fault zone is included in isolation range.
And, in processing procedure, need to judge to turn in load, if still have the load of non-dead electricity, sentence for these loads
Disconnected node power, and do mate turning power supply source, preferentially select non-same power supply.
The positive effect of the present invention and advantage be:
The present invention not only allows for the adaptability of present stage double cable supplying electricity and power distribution net troubleshooting function, it is also contemplated that for special fortune
The trend of line mode processes the impact that logical algorithm produces to ordinary failures, and ordinary failures processes the defect of logic, it is ensured that
The extensive adaptability of distribution network failure process and practicality, thus improve distribution network failure and process reliability, shorten power-on time,
User satisfaction is provided.
Accompanying drawing explanation
Fig. 1 is that the FA under double cable method of operation tests looped network figure；
Fig. 2 is troubleshooting process figure.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention made concrete introduction.
A kind of based on double cable supplying electricity and power distribution net troubleshooting compensation processes, it is analyzed for double cable supplying electricity and power distribution nets, obtains difference
Changing the resolution policy of troubleshooting, the dual power supply of user after ensureing non-faulting recovery of powering for double cables avoids double cable fault
The failure of the distribution network failure location that wrong report phenomenon causes, by expanding isolation range, will be unable to the false positive signal shielding confirmed,
Fault zone is included in isolation range, thus ensures the accuracy of fault location, it is to avoid owing to positioning the secondary unsuccessfully caused
Tripping operation.
As accompanying drawing 1, #1 line and #2 line form loop, interconnection switch hand in hand through #1 ring main unit, #2 ring main unit and #4 ring main unit
For #4 ring main unit 42 interconnection switch, being paired cable between #1 ring main unit and #2 ring main unit, paired cable is all stuck on CT, other
Circuit is single cable.
Such as accompanying drawing 1, having a cable to break down between #1 ring main unit and #2 ring main unit in paired cable, fault current refluxes
#2 ring main unit 21 can be caused to switch also have on over-current signal sending, system is judged as #2 ring main unit bus-bar fault, the isolation side provided
Case switchs for disconnecting #2 ring main unit 21 switch and #2 ring main unit 22, and recovery scheme is 1# wiretap and the #2 ring main unit 42 of closing
Network switchs.Because of scheme misjudgment, trouble point is also not isolated from, when close 1# wiretap time, 1# wiretap can be caused again to trip
Form second accident.
And it practice, system cable has single cable and double cable mark, can be the most appropriate as criterion amendment failure judgment method,
Suitably expand isolation range also to should be all right.
Differentiation troubleshooting under double cable powered operations is the distribution network failure location avoiding the wrong report phenomenon of double cable fault to cause
Failure, fundamentally walk around the distribution network failure that may bring of wrong report and position unsuccessfully.By expanding isolation range, will be unable to really
The false positive signal shielding recognized, is included in fault zone in isolation range, thus ensures the accuracy of fault location, it is to avoid due to
Position the secondary trip unsuccessfully caused.
For double cable faults, the processing method proposed here is to expand Fault Isolation scope.By analysis, can sum up: double
Cable line fault is likely to occur the service entrance switch that the over-current signal of wrong report is the most all switch cubicle.It is contemplated that be looped network judging
Bus-bar fault type in cabinet, extends forward one section by Fault Isolation scope, is isolated to the outlet switch of a ring main unit.
Dual power supply user, when troubleshooting, ensures that it remains as dual power supply as far as possible.Processing method is, it is judged that turn for negative
In lotus, if still have the load (dual power supply) of non-dead electricity, for these load decision node power supplys, and do mate turning power supply source,
Preferentially select non-same power supply.
The handling process supplementing technology based on double cable supplying electricity and power distribution net troubleshootings of the present invention is as follows:
Fault location；
Troubleshooting strategy generating；
Differentiation troubleshooting correction；
Scheme optimization generates；
Scheme performs；
Troubleshooting software module operational flow diagram sees accompanying drawing 2.
The ultimate principle of the present invention, principal character and advantage have more than been shown and described.Skilled person will appreciate that of the industry,
Above-described embodiment limits the present invention the most in any form, the technical scheme that the mode of all employing equivalents or equivalent transformation is obtained,
All fall within protection scope of the present invention.
Claims (2)
1. one kind based on double cable supplying electricity and power distribution net troubleshooting compensation processes, it is characterised in that: carry out for double cable supplying electricity and power distribution nets
Analyzing, obtain the resolution policy of differentiation troubleshooting, the dual power supply of user after ensureing non-faulting recovery of powering for double cables is
The failure that the distribution network failure avoiding the wrong report phenomenon of double cable fault to cause positions, by expanding isolation range, will be unable to confirmation
False positive signal shields, and is included in isolation range fault zone.
It is the most according to claim 1 based on double cable supplying electricity and power distribution net troubleshooting compensation processes, it is characterised in that: processing
During, need to judge to turn in load, if still have the load of non-dead electricity, for these load decision node power supplys and right
Turn power supply source to do and mate, preferentially select non-same power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260243.8A CN105896495A (en) | 2016-04-22 | 2016-04-22 | Complementary method for handling fault in distribution network based on dual cable power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610260243.8A CN105896495A (en) | 2016-04-22 | 2016-04-22 | Complementary method for handling fault in distribution network based on dual cable power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105896495A true CN105896495A (en) | 2016-08-24 |
Family
ID=56704532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610260243.8A Pending CN105896495A (en) | 2016-04-22 | 2016-04-22 | Complementary method for handling fault in distribution network based on dual cable power supply |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290799A (en) * | 2011-08-11 | 2011-12-21 | 中国电力科学研究院 | Small-scale quick recovery method for power supply of power distribution network in open loop running |
| CN103606910A (en) * | 2013-12-06 | 2014-02-26 | 云南电网公司大理供电局 | Wide area information based fault self-healing method for dead zone of feeder outlet of distribution network |
| CN103872687A (en) * | 2014-03-31 | 2014-06-18 | 国网上海市电力公司 | Power distribution network rack wiring structure |
| CN103904626A (en) * | 2014-03-21 | 2014-07-02 | 广州南方电力集团科技发展有限公司 | Method for automatically judging and controlling power distribution network failure in ring main unit power supply |
| CN104810829A (en) * | 2015-05-26 | 2015-07-29 | 中国电力科学研究院 | Network structure simplification processing method for power distribution network reconstruction |
-
2016
- 2016-04-22 CN CN201610260243.8A patent/CN105896495A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290799A (en) * | 2011-08-11 | 2011-12-21 | 中国电力科学研究院 | Small-scale quick recovery method for power supply of power distribution network in open loop running |
| CN103606910A (en) * | 2013-12-06 | 2014-02-26 | 云南电网公司大理供电局 | Wide area information based fault self-healing method for dead zone of feeder outlet of distribution network |
| CN103904626A (en) * | 2014-03-21 | 2014-07-02 | 广州南方电力集团科技发展有限公司 | Method for automatically judging and controlling power distribution network failure in ring main unit power supply |
| CN103872687A (en) * | 2014-03-31 | 2014-06-18 | 国网上海市电力公司 | Power distribution network rack wiring structure |
| CN104810829A (en) * | 2015-05-26 | 2015-07-29 | 中国电力科学研究院 | Network structure simplification processing method for power distribution network reconstruction |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160824 |