CN104124749B - The dual-ring network distribution line failure processing method that prepared auto restart coordinates with power distribution automation - Google Patents
The dual-ring network distribution line failure processing method that prepared auto restart coordinates with power distribution automation Download PDFInfo
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- CN104124749B CN104124749B CN201410342267.9A CN201410342267A CN104124749B CN 104124749 B CN104124749 B CN 104124749B CN 201410342267 A CN201410342267 A CN 201410342267A CN 104124749 B CN104124749 B CN 104124749B
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- 238000013024 troubleshooting Methods 0.000 claims abstract description 12
- 238000012937 correction Methods 0.000 claims abstract description 11
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/12—Energy storage units, uninterruptible power supply [UPS] systems or standby or emergency generators, e.g. in the last power distribution stages
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Abstract
The present invention relates to the dual-ring network distribution line failure processing method that a kind of prepared auto restart coordinates with power distribution automation, by by prepared auto restart troubleshooting and distribution network automated coordinating, after breaking down, first utilize prepared auto restart quick action, the advantage of reliable in action, the power supply of fast quick-recovery to dead electricity load; Recycle afterwards centralized intelligence power distribution automation and carry out Correction and Control, based on global information, troubleshooting result is optimized to adjustment, and process failed in the situation that and can also generate the scheme of remedying at prepared auto restart, make up the only limitation based on local information of backup auto-activating device. The method can meet the requirement of dual-ring network distribution line failure processing well, improves its troubleshooting performance and power supply reliability.
Description
Technical field
The present invention relates to the troubleshooting field of power distribution network, particularly a kind of prepared auto restart (full name: inlet wire automatic throw-in equipment for subsequent use)The dual-ring network distribution line failure processing method coordinating with power distribution automation.
Background technology
In order to meet the requirement of high power supply reliability, carry out in a large number and ground from aspects such as Distribution Network Frame, electrical equipment and automatic technologiesStudy carefully work.
Power distribution automation is to realize fault fast positioning, isolation and service restoration, thereby improves the important means of power supply reliability,Obtain in recent years a large amount of achievements in research. But, for the exigent urban core of power supply reliability region, for mostAmount reduces the coverage of fault outage, thereby improves power supply reliability, needs the segments of division often more on circuit, and realOn the circuit of border, often do not possess the condition of the distribution terminal that sufficient amount is installed.
Zhejiang Electric Power Company is using for reference international advanced experience, and bases oneself upon on the basis of self rack, taking dual-ring network circuit as backbone networkFrame, has proposed " three pairs " Connection Mode of " dual power supply, double-circuit, two access ", and is that each user's distribution transforming is equipped with inlet wireBackup auto-activating device, distribution transforming can automatically switch to stand-by power supply and restore electricity in the time of main power supply fault, and the fault outage time is short (onlyFor the time of prepared auto restart action), processing logic simply and not relies on communication port and main website, therefore more reliable compared with power distribution automation.Troubleshooting and the repair process of upper level power supply (comprising transformer station, switching station, main cable, power distribution room inlet wire cable etc.) can notAffect customer power supply, can reach in theory very high power supply reliability.
But Zhejiang company also finds, only relies on " three pairs " wiring faults processing of prepared auto restart on the spot in actual applicationMode also exists some problems, and main manifestations is:
(1) distribution transforming backup auto-activating device lacks monitoring in real time, and distribution scheduling cannot be grasped on off state, for a certain load is actuallyBy main for line powering or available line powering, fault recovery afterload whether switch return main for circuit from administrative staff to operationPersonnel are unclear;
(2) prepared auto restart itself belongs to distributed intelligence character, can not the actual load situation based on global information and circuit carry out excellentChange fault recovery;
(3) layouted by electric substation and outgoing line interval limits, summer, line load still likely cannot meet N-1 when peak of power consumption,If do not consider extension wire loading condition when switching, probably cause another circuit overload tripping operation, cause two loop line roads all to have a power failure.Allow to meet N-1, but occurring, under the situation of N-2 fault, also likely to cause the extension of troubleshooting.
Summary of the invention
The dual-ring network distribution line failure processing method that the object of the present invention is to provide a kind of prepared auto restart to coordinate with power distribution automation, withSolve the existing defect of existing dual-ring network circuit backup power automatic switching troubleshooting mode, reliable to give full play to the high power supply of " three pairs " wiringThe advantage of property, improves its troubleshooting performance.
To achieve these goals, the present invention adopts following technical scheme:
The dual-ring network distribution line failure processing method that prepared auto restart coordinates with power distribution automation, comprises the following steps:
(1) each user's distribution transforming is all respectively got 1 road power supply from two circuits of dual-ring network, and for each user's distribution transforming be equipped with intoLine backup auto-activating device;
(2) Cooperation with Relay of backup auto-activating device and transformer station's wire-outgoing breaker on the spot, protects in transformer station's wire-outgoing breaker relayProtect and move tripping operation because of line failure or overload, and after reclosing failure, fast the distribution transforming on faulty line is transferred to twoOn the other circuit of looped network, recover the power supply to load;
(3) electrical power distribution automatization system carries out Correction and Control and optimizes and revises troubleshooting result based on global information: send out if checkNow also have because of the not residual not recoverable load of power supply of action reason of prepared auto restart, carry out Correction and Control by remote control and recover itPower supply; Break down again if turn the feeder line of on-load by prepared auto restart, electrical power distribution automatization system is optimized adjustment in conjunction with global information,And carry out the strategy generating by remote control, recover to greatest extent strong region-wide power supply;
(4) after fault restoration, carry out by manually starting electrical power distribution automatization system the control of returning to normal operating mode after fault restoration.
Preferably, in step (1), for overhead transmission line, prepared auto restart handoff delay set of time is greater than single shot reclosing delay time,For the overhead transmission line of distribution-free formula power supply, be set to 1-2s; For the overhead transmission line containing distributed power source, be set to 3.5-4.5s;For cable run, handoff delay set of time is 0.5-1s.
Preferably, prepared auto restart must take remote control or the manual operation just can be from the former master of stand-by power supply switchback after action in step (2)Power supply source.
Compared with the prior art, advantage of the present invention is: (1) prepared auto restart arranges short time delay, the power supply of fast quick-recovery to dead electricity load,Power supply reliability is high; (2) power distribution automation carries out Correction and Control, due to can be based on global information, and therefore zmodem, andCan further optimize fault recovery structure.
Brief description of the drawings
Fig. 1 a to Fig. 1 d is that prepared auto restart coordinates dual-ring network distribution line failure processing procedure schematic diagram with power distribution automation; Wherein, figure1a is the dual-ring network conspectus that is equipped with prepared auto restart; Fig. 1 b be equipped with in the dual-ring network circuit of prepared auto restart, on a circuit, occur thereforeAfter barrier, prepared auto restart completes the schematic diagram of load transfer fast; Fig. 1 c is equipped with in the dual-ring network circuit of prepared auto restart another circuit againBreak down, the schematic diagram that causes two circuits all to have a power failure; Fig. 1 d is that centralized intelligence power distribution automation carries out after Correction and ControlFault recovery result schematic diagram.
In figure: represent transformer station's outlet switch of "on" position with ■, represents transformer station's outlet switch of gate-dividing state ,/generationThe feeder switch of table "on" position, the feeder switch of × expression gate-dividing state,The load that represents normal power supply, △ represents mistakeThe load of electricity.
Detailed description of the invention
Below with reference to specific embodiment, the content of invention is described further.
Refer to shown in Fig. 1 a to Fig. 1 d the dual-ring network distribution line failure place that a kind of prepared auto restart of the present invention coordinates with power distribution automationReason method, comprises the following steps:
(1) each user's distribution transforming is all respectively got 1 road power supply from two circuits of dual-ring network, and for each user's distribution transforming be equipped with intoLine backup auto-activating device; For overhead transmission line, prepared auto restart handoff delay set of time is greater than single shot reclosing delay time, for nothing pointThe overhead transmission line of cloth formula power supply, is set to 1-2s; For the overhead transmission line containing distributed power source, be set to 3.5-4.5s; ForCable run, handoff delay set of time is 0.5-1s.
(2) Cooperation with Relay of backup auto-activating device and transformer station's wire-outgoing breaker on the spot, protects in transformer station's wire-outgoing breaker relayProtect and move tripping operation because of line failure or overload, and after reclosing failure, fast the distribution transforming on faulty line is transferred to separatelyOn an outer circuit, recover the power supply to load, and prepared auto restart must take after action remote control or the manual operation just can be from electricity for subsequent useThe former main power supply of source switchback.
(3) electrical power distribution automatization system carries out Correction and Control and optimizes and revises troubleshooting result based on global information: send out if checkNow also have because of the not residual not recoverable load of power supply of action reason of prepared auto restart, carry out Correction and Control by remote control and recover itPower supply; Break down again if turn the feeder line of on-load by prepared auto restart, electrical power distribution automatization system is optimized adjustment in conjunction with global information,And carry out the strategy generating by remote control, recover to greatest extent strong region-wide power supply.
(4) after fault restoration, carry out by manually starting electrical power distribution automatization system the control of returning to normal operating mode after fault restoration.
One, troubleshooting when N-1
As shown in Fig. 1 (b), after arbitrary feeder line breaks down, backup auto-activating device is cut whole distribution transformings on this circuit rapidly on the spotChange on another extension wire, fast its power supply of quick-recovery. Electrical power distribution automatization system is opened according to fault message and the prepared auto restart collectedWhether off status, also have the not recoverable load of power supply former thereby residual because of prepared auto restart tripping from overall angle inspection, finds instituteLose electric load and restore electricity, do not need to carry out Correction and Control, fault recovery result is as shown in Fig. 1 (b).
Two, under N-1 condition, there is again another processing of place when fault
As shown in Fig. 1 (c), when load switching is arrived another loop line Lu Shanghou by prepared auto restart, if this circuit breaks down again, can leadCause by prepared auto restart each other two circuits for subsequent use have a power failure simultaneously, if not in conjunction with power distribution automation, only rely on prepared auto restart on the spot,Final result is exactly that two loads on circuit all cannot restore electricity, after power distribution automation, and can be automatic by distributionChange system is carried out Correction and Control, recovers to greatest extent strong region-wide power supply, and fault recovery result is as shown in Fig. 1 (d).
Claims (2)
1. the dual-ring network distribution line failure processing method that prepared auto restart coordinates with power distribution automation, is characterized in that, comprise withLower step:
(1) each user's distribution transforming is all respectively got 1 road power supply from two circuits of dual-ring network, and for each user's distribution transforming be equipped with intoLine backup auto-activating device;
(2) Cooperation with Relay of backup auto-activating device and transformer station's wire-outgoing breaker on the spot, protects in transformer station's wire-outgoing breaker relayProtect and move tripping operation because of line failure or overload, and after reclosing failure, fast the distribution transforming on faulty line is transferred to twoOn the other circuit of looped network, recover the power supply to load;
(3) electrical power distribution automatization system carries out Correction and Control and optimizes and revises troubleshooting result based on global information: send out if checkNow also have because of the not residual not recoverable load of power supply of action reason of prepared auto restart, carry out Correction and Control by remote control and recover itPower supply; Break down again if turn the feeder line of on-load by prepared auto restart, electrical power distribution automatization system is optimized adjustment in conjunction with global information,And carry out the strategy generating by remote control, recover to greatest extent strong region-wide power supply;
(4) after fault restoration, carry out by manually starting electrical power distribution automatization system the control of returning to normal operating mode after fault restoration;
In step (1), for overhead transmission line, prepared auto restart handoff delay set of time is greater than single shot reclosing delay time, for nothingThe overhead transmission line of distributed power source, is set to 1-2s; For the overhead transmission line containing distributed power source, be set to 3.5-4.5s; ForCable run, handoff delay set of time is 0.5-1s.
2. method according to claim 1, is characterized in that, in step (2), prepared auto restart must be taked remote control after actionOr manual operation is from the former main power supply of stand-by power supply switchback.
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| CN201410342267.9A CN104124749B (en) | 2014-07-17 | 2014-07-17 | The dual-ring network distribution line failure processing method that prepared auto restart coordinates with power distribution automation |
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| CN106786421A (en) * | 2016-12-28 | 2017-05-31 | 国网上海市电力公司 | Relay protection scheme system and the control method handed in hand based on 110KV under powering mode |
| CN106849328B (en) * | 2017-01-20 | 2019-05-17 | 上海交通大学 | Multi-voltage grade power distribution network automatic change-over device of emergency adaptive configuring method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103545797A (en) * | 2013-10-10 | 2014-01-29 | 国家电网公司 | Distribution network area protecting and self-healing system |
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| CN103545797A (en) * | 2013-10-10 | 2014-01-29 | 国家电网公司 | Distribution network area protecting and self-healing system |
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| Reliability Worth Assessment of an Automatic Loop Restoration Scheme for Urban Distribution Networks;Kazemi,S. Lehtonen,M. Fotuhi-Firuzabad,M.;《Innovative Smart Grid Technologies Conference Europe (ISGT Europe),2010 IEEE PES 》;20101013;1-8 * |
| 智能配电网馈线自动化发展及展望;张敏，崔琪，吴斌;《电网与清洁能源》;20100430;第26卷(第4期);41-43,51 * |
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