CN106374444A - Distribution line first-section fault processing method under non-interactive condition - Google Patents
Distribution line first-section fault processing method under non-interactive condition Download PDFInfo
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- CN106374444A CN106374444A CN201611023196.1A CN201611023196A CN106374444A CN 106374444 A CN106374444 A CN 106374444A CN 201611023196 A CN201611023196 A CN 201611023196A CN 106374444 A CN106374444 A CN 106374444A
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- fault
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- distribution line
- line terminal
- power distribution
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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
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a distribution line first-section fault processing method under a non-interactive condition. Through substation outgoing line protection time constant value matching and logical action and through fault recovery under the condition of automatic communication of a distributed feeder, the fault at the first section of a substation outgoing line is isolated and power supply in a non-first-section-fault region is recovered under the condition that substation exit protection and a first distribution line terminal cannot carry out information interaction. The solution can only be that fault processing of the line is taken as a blind spot, namely, feeder automatic fault isolation of the first section of the line is not considered, and if the first section of the line fails, exit action is protected by the outgoing line only, and the fault is removed by powering off the whole line. The fault region cannot be isolated automatically, and power supply in the non-first-section-fault region cannot be completed.
Description
Technical field
Patent of the present invention belongs to the FEEDER AUTOMATION field of electrical power distribution automatization system, more particularly, to a kind of non-interactive type
Under the conditions of distribution line first section fault handling method.
Background technology
Feeder automation is an extremely important aspect of electrical power distribution automatization system, and distributed feeder automation is passed through adjacent
Communication between terminal and information exchange are come positioning failure region and are completed troubleshooting.Therefore, for generation in common segmentation
Line fault between switch, is interacted by relevant information between distribution terminal, can successfully realize fault zone positioning, every
Power from non-first section fault zone；But for the circuit first section event occurring between substation exit to first block switch
Barrier, because now only outlet protection can detect fault, and first station power distribution terminal is to examine out of order, therefore will accurately determine
Position and isolated fault section, then must possess the condition of information exchange between outlet protection and first station power distribution terminal；But in reality
In application, it is restricted distance therebetween and execution conditions, be more limited to system and administration authority and the letter of client
(transformer station typically belongs to districts and cities or higher level's scheduling administration to breath security doctrine problem, and distribution line typically belongs to Yun Jian department of basic unit
Administration), often do not possess information interaction condition between substation exit protection and first station power distribution terminal.Under these conditions, lead to
Normal processing method can only be as blind area using the troubleshooting of this section of circuit, does not consider the feeder automation of this circuit first section
Fault Isolation, if this circuit first section breaks down, can only rely on outlet protection exit action, and whole piece circuit all fronts dead electricity is come
Excision fault, and cannot automatic separating fault region complete the power supply of non-first section fault zone.
Content of the invention
The technical problem to be solved in the present invention is: provides the distribution line first section troubleshooting under the conditions of a kind of non-interactive type
Method, common solution can only be as blind area using the troubleshooting of this section of circuit, does not consider the feedback of this circuit first section
Line automation Fault Isolation, if this circuit first section breaks down, only relies on outlet protection exit action, and whole piece circuit is completely
Dead electricity excising fault, and cannot automatic separating fault region and complete non-first section fault zone power supply problem.
The present invention provide technical scheme be a kind of non-interactive type under the conditions of distribution line first section fault handling method, lead to
Cross coupling and the logical action of transformer station's outlet guard time definite value, and combine the event under the conditions of distributed feeder automation communications
Barrier recovers, and does not possess with first station power distribution line terminal in substation exit protection and realizes transformer station's outlet line under information interaction condition
The Fault Isolation of road first section and the service restoration of non-first section fault zone.
Described transformer station's outlet guard time definite value is tripping operation time delay definite value t, substation exit protection single shot reclosing
Time t1 and substation exit protect secondary reclosure time t2；Described t ＞ t1+t2.
Described transformer station's outlet circuit first section is the distribution between substation exit protection and first station power distribution line terminal
Circuit.
Headed by described non-transformer station outlet first section between station power distribution line terminal and last station power distribution line terminal
Distribution line.
The troubleshooting of described transformer station's outlet circuit first section is to set transforming plant protecting first with first station power distribution circuit eventually
Transformer station's outlet first section between end breaks down, and the two does not possess information interaction condition；Secondly transforming plant protecting detection fault
Action afterwards, single shot reclosing baulk after the t1 time, illustrate as permanent fault；After first station power distribution line terminal detection decompression,
Start decompression delay tripping timing；The secondary unsuccessful reclosing of transforming plant protecting after the t2 time again, first station power distribution line terminal is still
It is in detection decompression state；Then first station power distribution line terminal time delay t, and t ＞ t1+t2, still in decompression after arrival, explanation
Fault occurs in circuit first section, the tripping operation of first station power distribution line terminal, and fault section positioning and isolation complete；Final fault success every
From rear, distributed feeder automation recovery function on, non-faulting side distribution line terminal is passed through information exchange and is calculated with topology,
Interconnection switch confirms itself to need action, starts and closes a floodgate, completes the power supply of non-first section fault zone after closing success.
The service restoration of described non-first section fault zone is to set the adjacent part of path carrying out information exchange first to occur
Fault, simultaneously transforming plant protecting and first station power distribution line terminal straight between do not possess information interaction condition；Secondly transforming plant protecting
Action after detection fault, single shot reclosing baulk after t1, illustrate as permanent fault；First station power distribution line terminal detects decompression
Afterwards, start decompression delay tripping timing；Transforming plant protecting secondary reclosing timing starts；Again because action occurs in non-power transformation
Stand out circuit first section, related distribution line terminal can detect fault, start distributed feeder automation positioning function success simultaneously
Positioning and isolated fault；Then, after the completion of Fault Isolation, distributed feeder automation recovers function on, non-faulting side distribution wire
Road terminal is passed through information exchange and is calculated with topology, and interconnection switch confirms itself to need action, starts and closes a floodgate, completes after closing success
The power supply of non-first section fault zone；Subsequently after transforming plant protecting secondary reclosing time delay t2 reaches, because fault is successful
Isolation, the now secondary reclosing success of transforming plant protecting；Finally because the secondary reclosing success of transforming plant protecting, first station power distribution line
Road terminal decompression condition disappears, and its decompression time delay does not reach t ＞ t1+t2, will not trip in first station power distribution line terminal in action, until
This troubleshooting terminates.
Using technical scheme, by with the mating and logical action of transformer station's outlet guard time definite value, and
In conjunction with the fault recovery under the conditions of distributed feeder automation communications, can in transforming plant protecting with first station power distribution line terminal not
Possess and under information interaction condition, effectively realize the Fault Isolation of circuit first section and restoring electricity of non-first section fault zone, thus solving
Certainly common processing method can only be as blind area using the troubleshooting of this section of circuit, does not consider the feeder line of this circuit first section certainly
Dynamicization Fault Isolation, if this circuit first section breaks down, can only rely on outlet protection exit action, whole piece circuit completely loses
Electricity excising fault, and cannot automatic separating fault region and complete non-first section fault zone power supply problem.
Beneficial effects of the present invention: compared with prior art, the present invention is directed to the practical application of distributed feeder automation
In, due to the circuit often not possessing information interaction condition and leading between transforming plant protecting and first circuit distribution line terminal
First section troubleshooting is changed into blind zone problem, based on existing condition, in the case of not increasing additional investment and treatment conditions, carries
Go out a kind of new circuit first section fault handling method that can combine together completely with distributed feeder automation, can be successful
Realize the full line covering that feeder automation fault location, isolation and non-first section fault zone power, enforcement is simple, effect is bright
Aobvious.
Brief description
Fig. 1 is novel feeder automatization of the present invention circuit first section troubleshooting process figure；
Fig. 2 is embodiment topological diagram.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further to invention:
As shown in Fig. 1～2, a kind of distribution line first section fault handling method under the conditions of non-interactive type, by transformer station's outlet
The coupling of guard time definite value and logical action, and combine the fault recovery under the conditions of distributed feeder automation communications, becoming
Power station outlet protection and first station power distribution line terminal do not possess the event realizing transformer station's outlet circuit first section under information interaction condition
Phragma is from the service restoration with non-first section fault zone.
Using circuit hand in hand during test, as shown in Fig. 2 its breaker in middle 1 and switch 6 correspond to transforming plant protecting, switch
2- switch 5 corresponds to distribution line terminal, switch 1 protection and switch 2 distribution line terminals, switch 6 protection and switch 5 distribution wires
Do not possess information interaction condition between the terminal of road, information exchange between remaining distribution line terminal, can be carried out；Switch 2 distribution lines
Terminal, switch 5 distribution line terminals are adjusted as decompression delay tripping, delay time t=8s；Switch 1 protection, switch 6 relaying configuration
Secondary reclosing, wherein first time reclosure time t1=2s, second reclosure time t2=5s；
If fault occurs between switch 1 and switch 2:
1) action after switch 1 protection detection fault, first time reclosing baulk after 2s, illustrate as permanent fault；Switch 2 is joined
After electric line terminal detection decompression, start decompression delay tripping timing；
2) the switch 1 secondary unsuccessful reclosing of protection after 7s, switch 2 distribution line terminals are still in detection decompression state；
3) switch 2 distribution line terminals after 8s still in decompression state, illustrate fault occur transformer station outlet first section switch 1 with
Between switch 2, switch 2 distribution line terminal tripping operation, fault section positions and isolation completes；
4) after fault is successfully isolated, distributed feeder automation recovers function on, and non-faulting side distribution line terminal passes through letter
Breath interaction and topology calculate, and interconnection switch 5 distribution line terminal check itself needs action, start and close a floodgate, complete after closing success
Become the power supply of non-first section fault zone；
If fault occurs between switch 2 and switch 3:
1) action after switch 1 protection detection fault, single shot reclosing baulk after 2s, illustrate as permanent fault；Switch 2 distribution
After line terminal detection decompression, start decompression delay tripping timing；Switch 1 protection starts secondary reclosing timing and starts；
2) switch 2 distribution line terminal synchronously detects fault, starts distributed feeder automation positioning function, fault point position
Between switch 2 and switch 3, the two corresponding distribution line terminal tripping switch 2 and switch 3 respectively, complete isolated fault；
3) after the completion of Fault Isolation, distributed feeder automation recovers function on, and non-faulting side distribution line terminal passes through letter
Breath interaction and topology calculate, and interconnection switch 5 confirms itself to need action, start and close a floodgate, complete non-first section fault after closing success
The power supply in region；
4) the switch 1 secondary reclosing action of protection after fault occurs 7s simultaneously, because fault is successfully isolated, now secondary heavy
Closing success；
5) because the switch 1 secondary reclosing success of protection, switch 2 distribution line terminal decompression condition disappears, its decompression time delay 8s
Do not reach, switch 2 distribution line terminals will not trip in action, and this troubleshooting terminates.
The present invention is directed in the practical application of distributed feeder automation, due to transforming plant protecting and first circuit distribution wire
The circuit first section troubleshooting often not possessing information interaction condition and leading between the terminal of road is changed into blind zone problem, based on existing
Condition, in the case of not increasing additional investment and treatment conditions it is proposed that a kind of new can completely with distributed feedback
The circuit first section fault handling method that line automation combines together, can successfully realize feeder automation fault location, isolation and non-
The full line that first section fault zone powers covers, and enforcement is simple, effect is obvious.
Above content is to further describe it is impossible to assert with reference to specific preferred implementation is made for the present invention
Being embodied as of the present invention is confined to these explanations.For general technical staff of the technical field of the invention,
On the premise of present inventive concept, some simple deduction or replace can also be made, all should be considered as belonging to the present invention's
Protection domain.
Claims (6)
1. the distribution line first section fault handling method under the conditions of a kind of non-interactive type it is characterised in that: by transformer station's outlet
The coupling of guard time definite value and logical action, and combine the fault recovery under the conditions of distributed feeder automation communications, becoming
Power station outlet protection and first station power distribution line terminal do not possess the event realizing transformer station's outlet circuit first section under information interaction condition
Phragma is from the service restoration with non-first section fault zone.
2. the distribution line first section fault handling method under the conditions of a kind of non-interactive type according to claim 1, its feature
It is: described transformer station's outlet guard time definite value is tripping operation time delay definite value t, the substation exit protection single shot reclosing time
T1 and substation exit protect secondary reclosure time t2；Described t ＞ t1+t2.
3. the distribution line first section fault handling method under the conditions of a kind of non-interactive type according to claim 1, its feature
It is: described transformer station's outlet circuit first section is the distribution wire between substation exit protection and first station power distribution line terminal
Road.
4. the distribution line first section fault handling method under the conditions of a kind of non-interactive type according to claim 1, its feature
It is: first station power distribution circuit is whole in other words for other distribution wire sections outside first section circuit for described non-transformer station outlet first section
Distribution line between end and last station power distribution line terminal.
5. the distribution line first section fault handling method under the conditions of a kind of non-interactive type according to claim 1, its feature
Be: the Fault Isolation of described transformer station's outlet circuit first section be set first transforming plant protecting and first station power distribution line terminal it
Between transformer station's outlet first section break down, the two does not possess information interaction condition；Secondly dynamic after transforming plant protecting detection fault
Make, single shot reclosing baulk after t1, illustrate as permanent fault；After first station power distribution line terminal detection decompression, start decompression
Delay tripping timing；The secondary unsuccessful reclosing of transforming plant protecting after the t2 time again, first station power distribution line terminal is still in detection
Decompression state；Then first station power distribution line terminal time delay t, and t ＞ t1+t2, still in decompression after arrival, illustrates that fault occurs
In circuit first section, the tripping operation of first station power distribution line terminal, fault section positions and isolation completes；After final fault is successfully isolated, point
Cloth feeder automation recovers function on, and non-faulting side distribution line terminal is passed through information exchange and calculated with topology, and contact is opened
Close and confirm itself to need action, start and close a floodgate, after closing success, complete the power supply of non-first section fault zone.
6. the distribution line first section fault handling method under the conditions of a kind of non-interactive type according to claim 1, its feature
It is: the service restoration of described non-first section fault zone is to set the adjacent part of path carrying out information exchange first event occurs
Barrier, simultaneously transforming plant protecting and first station power distribution line terminal straight between do not possess information interaction condition；Secondly transforming plant protecting inspection
Action after being out of order, single shot reclosing baulk after t1, illustrate as permanent fault；First station power distribution line terminal detects decompression
Afterwards, start decompression delay tripping timing；Transforming plant protecting secondary reclosing timing starts；Again because action occurs in non-power transformation
Stand out circuit first section, related distribution line terminal can detect fault, start distributed feeder automation positioning function success simultaneously
Positioning and isolated fault；Then, after the completion of Fault Isolation, distributed feeder automation recovers function on, non-faulting side distribution wire
Road terminal is passed through information exchange and is calculated with topology, and interconnection switch confirms itself to need action, starts and closes a floodgate, completes after closing success
The power supply of non-first section fault zone；Subsequently after transforming plant protecting secondary reclosing time delay t2 reaches, because fault is successful
Isolation, the now secondary reclosing success of transforming plant protecting；Finally because the secondary reclosing success of transforming plant protecting, first station power distribution line
Road terminal decompression condition disappears, and its decompression time delay does not reach t ＞ t1+t2, will not trip in first station power distribution line terminal in action, until
This troubleshooting terminates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611023196.1A CN106374444B (en) | 2016-11-21 | 2016-11-21 | A kind of distribution line first section fault handling method under the conditions of non-interactive type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611023196.1A CN106374444B (en) | 2016-11-21 | 2016-11-21 | A kind of distribution line first section fault handling method under the conditions of non-interactive type |
Publications (2)
| Publication Number | Publication Date |
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| CN106374444A true CN106374444A (en) | 2017-02-01 |
| CN106374444B CN106374444B (en) | 2019-07-19 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867223A (en) * | 2010-04-08 | 2010-10-20 | 浙江省电力试验研究院 | Automatic system fault handling method of distribution network containing a plurality of distributed power supplies |
| CN102005746A (en) * | 2010-11-30 | 2011-04-06 | 南京南瑞继保电气有限公司 | Method based on topology protection of distributing network |
| CN102306929A (en) * | 2011-09-14 | 2012-01-04 | 宁波市鄞州供电局 | Method and system for realizing fault self-healing |
| CN102916409A (en) * | 2012-11-13 | 2013-02-06 | 山东电力集团公司济南供电公司 | Voltage-time type feeder automation running method based on parameter adjustment |
| 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 |
-
2016
- 2016-11-21 CN CN201611023196.1A patent/CN106374444B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101867223A (en) * | 2010-04-08 | 2010-10-20 | 浙江省电力试验研究院 | Automatic system fault handling method of distribution network containing a plurality of distributed power supplies |
| CN102005746A (en) * | 2010-11-30 | 2011-04-06 | 南京南瑞继保电气有限公司 | Method based on topology protection of distributing network |
| CN102306929A (en) * | 2011-09-14 | 2012-01-04 | 宁波市鄞州供电局 | Method and system for realizing fault self-healing |
| CN102916409A (en) * | 2012-11-13 | 2013-02-06 | 山东电力集团公司济南供电公司 | Voltage-time type feeder automation running method based on parameter adjustment |
| 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 |
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| CN106374444B (en) | 2019-07-19 |
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