CN104124749A - Double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation - Google Patents
Double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation Download PDFInfo
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- CN104124749A CN104124749A CN201410342267.9A CN201410342267A CN104124749A CN 104124749 A CN104124749 A CN 104124749A CN 201410342267 A CN201410342267 A CN 201410342267A CN 104124749 A CN104124749 A CN 104124749A
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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 invention relates to a double loop network distributing line fault handling method by means of cooperation of spare power automatic switching and distribution automation. The double loop network distributing line fault handling method by means of the cooperation of the spare power automatic switching and the distribution automation is characterized by firstly utilizing advantages of high movement speed and reliable movement of the spare power automatic switching when faults occur by means of cooperation of the spare power automatic switching and the distribution automation to quickly resume power supply of power-loss loads; then performing correction control by means of centralized intelligent distribution automation, optimizing and adjusting fault handling results on the basis of global information, and further generating a remedy when the spare power automatic switching handling fails to make up a limitation that a spare power automatic switching is only based on local information. The double loop network distributing line fault handling method by means of the cooperation of the spare power automatic switching and the distribution automation can well meet requirements of double loop network distributing line fault handling and improves fault handling 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: the dual-ring network distribution line failure processing method standby inlet wire automatic throw-in equipment) coordinating with power distribution automation.
Background technology
In order to meet the requirement of high power supply reliability, from aspects such as Distribution Network Frame, electric equipment and automatic technologies, a large amount of research work have been carried out.
Power distribution automation is to realize fault fast positioning, isolation and service restoration, thereby improves the important means of power supply reliability, has obtained in recent years a large amount of achievements in research.But, for the exigent urban core of power supply reliability region, in order to reduce the coverage of fault outage as far as possible, thereby improve power supply reliability, on circuit, need the segments of division often more, and on actual track, 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 base oneself upon on the basis of self rack, take dual-ring network circuit as trunk rack, " three pairs " Connection Mode of " duplicate supply, double-circuit, two access " has been proposed, and be that each user's distribution transforming is equipped with inlet wire backup auto-activating device, distribution transforming can automatically switch to stand-by power supply and restore electricity when main power supply fault, the fault outage time short (time of only moving for prepared auto restart), 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 not affect customer power supply, can reach very high power supply reliability in theory.
But Zhejiang company is also discovery in actual application, only relies on " three pairs " wiring faults processing mode of prepared auto restart on the spot and also exists some problems, and main manifestations is:
(1) distribution transforming backup auto-activating device lacks monitoring in real time, distribution scheduling cannot be grasped on off state, actually or for a certain load by main for line powering available line powering, fault recovery afterload whether switch return main all unclear from administrative staff to operations staff for circuit;
(2) prepared auto restart itself belongs to distributed intelligence character, can not the actual load situation based on global information and circuit be optimized fault recovery;
(3) layouted by electric substation and outgoing line interval limits, summer, line load still likely cannot meet N-1 during peak of power consumption, if do not consider extension wire loading condition during switching, probably caused another circuit overload tripping operation, caused 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, to solve the existing defect of existing dual-ring network circuit backup power automatic switching troubleshooting mode, to give full play to the advantage of " three pairs " the high power supply reliability of wiring, improve 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 is that each user's distribution transforming is equipped with inlet wire backup auto-activating device;
(2) Cooperation with Relay of backup auto-activating device and transformer station's wire-outgoing breaker on the spot, in transformer station's wire-outgoing breaker relaying protection, move tripping operation because of line failure or overload, and after reclosing failure, fast the distribution transforming on faulty line is transferred on the other circuit of dual-ring network, recovered the power supply to load;
(3) electrical power distribution automatization system carries out Correction and Control and optimizing and revising based on global information to troubleshooting result: if check, find to also have because of the prepared auto restart residual not recoverable load of power supply of action reason not, by remote control, carry out Correction and Control and recover its power supply; If turn the feeder line of on-load by prepared auto restart, break down again, electrical power distribution automatization system is optimized adjustment in conjunction with global information, and carries out by remote control the strategy generating, and recovers to greatest extent strong region-wide power supply;
(4) after fault restoration, by manually starting electrical power distribution automatization system, carry out 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, and the overhead transmission line for distribution-free formula power supply, is set to 1-2s; Overhead transmission line for containing distributed power source, is set to 3.5-4.5s; For cable line, 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 main power supply of stand-by power supply switchback after action in step (2).
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, and power supply reliability is high; (2) power distribution automation carries out Correction and Control, due to can be based on global information, so zmodem, and can further optimize fault recovery structure.
Accompanying drawing explanation
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, Fig. 1 a is for being equipped with the dual-ring network conspectus of cup head; Fig. 1 b is for after breaking down on a circuit in the dual-ring network circuit of outfit prepared auto restart, and prepared auto restart completes the schematic diagram of load transfer fast; Fig. 1 c, for another circuit in the dual-ring network circuit of outfit prepared auto restart breaks down again, causes all schematic diagrames of power failure of two circuits; Fig. 1 d is that centralized intelligence power distribution automation carries out the fault recovery result schematic diagram after Correction and Control.
In figure: represent transformer station's outlet switch of "on" position with ■, represents transformer station's outlet switch of gate-dividing state ,/represent the feeder switch of "on" position, the feeder switch of * expression gate-dividing state ,-Δ represents the load of normal power supply, Δ represents the load of dead electricity.
Embodiment
Below with reference to example, the content of invention being described further.
Refer to shown in Fig. 1 a to Fig. 1 d, the dual-ring network distribution line failure processing method that a kind of prepared auto restart of the present invention 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 is that each user's distribution transforming is equipped with inlet wire backup auto-activating device; For overhead transmission line, prepared auto restart handoff delay set of time is greater than single shot reclosing delay time, and the overhead transmission line for distribution-free formula power supply, is set to 1-2s; Overhead transmission line for containing distributed power source, is set to 3.5-4.5s; For cable line, 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; in transformer station's wire-outgoing breaker relaying protection, move tripping operation because of line failure or overload; and after reclosing failure; fast the distribution transforming on faulty line is transferred on an other circuit; the power supply of recovery to load, and prepared auto restart must take remote control or the manual operation just can be from the former main power supply of stand-by power supply switchback after action.
(3) electrical power distribution automatization system carries out Correction and Control and optimizing and revising based on global information to troubleshooting result: if check, find to also have because of the prepared auto restart residual not recoverable load of power supply of action reason not, by remote control, carry out Correction and Control and recover its power supply; If turn the feeder line of on-load by prepared auto restart, break down again, electrical power distribution automatization system is optimized adjustment in conjunction with global information, and carries out by remote control the strategy generating, and recovers to greatest extent strong region-wide power supply.
(4) after fault restoration, by manually starting electrical power distribution automatization system, carry out the control of returning to normal operating mode after fault restoration.
One, troubleshooting during N-1
As shown in Fig. 1 (b), after arbitrary feeder line breaks down, on the spot backup auto-activating device rapidly by this circuit all distribution transformings be switched on another extension wire, fast its power supply of quick-recovery.Electrical power distribution automatization system is according to fault message and the prepared auto restart on off state collected, from overall angle inspection, whether also have because of the former thereby residual not recoverable load of power supply of prepared auto restart tripping, find that all dead electricity loads 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 during fault
As shown in Fig. 1 (c), when prepared auto restart arrives another loop line Lu Shanghou by load switching, if this circuit breaks down again, can cause by prepared auto restart each other standby two circuits 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, logically can cross electrical power distribution automatization system and carry out Correction and Control, recover to greatest extent strong region-wide power supply, fault recovery result is as shown in Fig. 1 (d).
Claims (3)
1. the dual-ring network distribution line failure processing method that prepared auto restart coordinates with power distribution automation, is characterized in that, 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 is that each user's distribution transforming is equipped with inlet wire backup auto-activating device;
(2) Cooperation with Relay of backup auto-activating device and transformer station's wire-outgoing breaker on the spot, in transformer station's wire-outgoing breaker relaying protection, move tripping operation because of line failure or overload, and after reclosing failure, fast the distribution transforming on faulty line is transferred on the other circuit of dual-ring network, recovered the power supply to load;
(3) electrical power distribution automatization system carries out Correction and Control and optimizing and revising based on global information to troubleshooting result: if check, find to also have because of the prepared auto restart residual not recoverable load of power supply of action reason not, by remote control, carry out Correction and Control and recover its power supply; If turn the feeder line of on-load by prepared auto restart, break down again, electrical power distribution automatization system is optimized adjustment in conjunction with global information, and carries out by remote control the strategy generating, and recovers to greatest extent strong region-wide power supply;
(4) after fault restoration, by manually starting electrical power distribution automatization system, carry out the control of returning to normal operating mode after fault restoration.
2. method according to claim 1, is characterized in that, in step (1), for overhead transmission line, prepared auto restart handoff delay set of time is greater than single shot reclosing delay time, and the overhead transmission line for distribution-free formula power supply, is set to 1-2s; Overhead transmission line for containing distributed power source, is set to 3.5-4.5s; For cable line, handoff delay set of time is 0.5-1s.
3. method according to claim 1, is characterized in that, in step (2), prepared auto restart must take remote control or manual operation from the former main power supply of stand-by power supply switchback after action.
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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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| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106849328A (en) * | 2017-01-20 | 2017-06-13 | 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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| 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 |
Non-Patent Citations (4)
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| KAZEMI,S. LEHTONEN,M. FOTUHI-FIRUZABAD,M.: "Reliability Worth Assessment of an Automatic Loop Restoration Scheme for Urban Distribution Networks", 《INNOVATIVE SMART GRID TECHNOLOGIES CONFERENCE EUROPE (ISGT EUROPE),2010 IEEE PES 》, 13 October 2010 (2010-10-13), pages 1 - 8, XP031803746 * |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN106849328A (en) * | 2017-01-20 | 2017-06-13 | 上海交通大学 | Multi-voltage grade power distribution network automatic change-over device of emergency adaptive configuring method |
| 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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| CN104124749B (en) | 2016-05-11 |
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