CN108808633A - A kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and device - Google Patents
A kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and device Download PDFInfo
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- CN108808633A CN108808633A CN201710307065.4A CN201710307065A CN108808633A CN 108808633 A CN108808633 A CN 108808633A CN 201710307065 A CN201710307065 A CN 201710307065A CN 108808633 A CN108808633 A CN 108808633A
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- China
- Prior art keywords
- timing
- failure
- repeatedly
- separating brake
- sectionaliser
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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
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- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention relates to a kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and devices, in the combined floodgate stabilization time of switch（The Y times）Interior increase increases locking opening time after the completion of detecting failure active trip avoidance function and Y timing；When some region is broken down in supply line, failure whether there is by detection switch load side in the Y time limits, whether failure judgement is in the load side switched；If it is actively tripping locking；Increase locking opening time after the completion of Y timing, even if detecting that load side is faulty in this period, also it does not trip, but next stage or what the switch in Y timing courses is allowed actively to trip and be latched, to effectively avoid the problem of non-faulting region during isolated fault repeatedly has a power failure.
Description
Technical field
The present invention relates to a kind of power distribution networks, more particularly, to a kind of isolation of distribution network failure and the method for fault self-recovery.
Background technology
Applicable more and more extensive now with electricity, the requirement to distribution network reliability and safety is also higher and higher.
Traditional automatic circuit coordinates isolated fault with sectionaliser, needs automatic circuit to overlap 2 times or more, in this way if failure is happened at end
End, most non-faulting region will be subjected to having a power failure twice, and the non-faulting area power off time close to fault zone is long,
In important loading zone, great economic loss will be caused twice by having a power failure, and influence very severe.
Invention content
It is above-mentioned for solving the present invention relates to a kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and device
The problem of processing time length and non-faulting region frequency of power cut mostly with time length when isolated fault region.In order to can isolated fault
Region makes non-faulting region reduce power off time to the greatest extent again, in the combined floodgate stabilization time of switch（The Y times）Interior increase detects
Increase locking opening time after the completion of failure active trip avoidance function and Y timing, even if detecting failure in locking opening time
Also it does not trip, can effectively reduce the frequency of power cut and power off time in non-faulting region.
The failure separation method for preventing from repeatedly coinciding with fault point is executed when certain region is broken down in supply line
Following steps：
（1）Then substation's automatic circuit separating brake is delayed coincidence, sectionaliser detection is so unilateral that establish the timing of beginning X by cable, and automatic circuit carries out Y meters
When；
（2）X timing is completed, and sectionaliser closes a floodgate；
（3）Sectionaliser, which closes a floodgate, to be completed, and Y timing is started.Sectionaliser and the detection whether faulty hair of circuit in automatic circuit Y timing courses
It is raw；
If faulty generation, the locking of active separating brake；
If fault-free occurs, timing continues, until Y timing is completed；
（4）Locking separating brake timing is proceeded by after the completion of Y timing；
It is latched line failure in opening time, is latched separating brake；
Locking opening time terminates, unlocking separating brake.
The method provided by the invention for preventing non-faulting region from repeatedly having a power failure, when some region is broken down in supply line
When, failure whether there is by detection switch load side in the Y time limits, whether failure judgement is in the load side switched；If it is
Then actively tripping locking；Increase locking opening time after the completion of Y timing, even if detecting that load side is faulty in this period,
Also it does not trip, but next stage or what the switch in Y timing courses is allowed actively to trip and be latched, to effectively avoid
The problem of non-faulting region repeatedly has a power failure during isolated fault.
Description of the drawings
Fig. 1 is to prevent the failure separation method work flow diagram that non-faulting region repeatedly has a power failure in the present embodiment；
Point schematic diagram occurs for Fig. 2 distribution network mistake wiring modes and failure.
Specific implementation mode
The present invention provides a kind of method and apparatus for preventing non-faulting region from repeatedly having a power failure, when certain region of power distribution network occurs
When permanent fault, fault zone can be quickly isolated reduce non-faulting region and repeatedly have a power failure, ensure power supply network safety and
Reliability.
Embodiment of the method：
The guard method flow chart in disposable isolated fault region provided by the present invention is as shown in Figure 1, be as follows：
（1）Then substation's automatic circuit separating brake is delayed coincidence, sectionaliser detection is so unilateral that establish the timing of beginning X by cable, and automatic circuit carries out Y meters
When；
（2）X timing is completed, and sectionaliser closes a floodgate；
（3）Sectionaliser, which closes a floodgate, to be completed, and Y timing is started.Sectionaliser and the detection whether faulty hair of circuit in automatic circuit Y timing courses
It is raw；
If faulty generation, the locking of active separating brake；
If fault-free occurs, timing continues, until Y timing is completed；
（4）Locking separating brake timing is proceeded by after the completion of Y timing；
It is latched line failure in opening time, is latched separating brake；
Locking opening time terminates, unlocking separating brake.
Embodiment in order to further illustrate the present invention, in a manner of 2 distribution network mistake wiring of attached drawing and failure occurs point and shows
Intention is described further, and wherein CB is substation, and CH is automatic circuit, and FD1 and FD2 are sectionaliser, and automatic circuit and sectionaliser are all
It is the embodiment of the present invention, is as follows：
1）After failure occurs, CH switches detect faulty tripping on circuit；
2）It is overlapped according to set time after CH trippings, starts to count the Y times；
Meanwhile FD1 is so unilateral that establish meter X times beginning by cable；
3）The CH timing Y times complete, and illustrate load side close region fault-free, start meter locking opening time；
The FD1 timing X times complete after a period of time, illustrate front end fault-free, close a floodgate, and start to count the Y times；
Meanwhile FD2 is so unilateral that establish meter X times beginning by cable；
4）The FD1 timing Y times complete, and illustrate load side close region fault-free, start meter locking opening time；
5）The FD2 timing X times complete after a period of time, illustrate front end close region fault-free, close a floodgate, and start the timing Y times；
6）FD2 He Zhong Library points, CH, FD1, FD2 can detect faulty on circuit, and CH and FD1 are in locking separating brake meter
When during, refusal tripping；During FD2 is in Y timing, detect that failure should actively trip locking, failure is isolated；
7）CH and FD1 locking separating brake timing is sequentially completed.
As can be seen that the embodiment of the present invention only needs once to overlap and can be with isolated fault, twice or two compared with conventional method
Secondary above overlap can just keep apart for failure, and non-faulting region undergoes frequency of power cut and time less.
Specific implementation mode of the present invention is presented above, but the present invention is not limited to described embodiment.
Under the thinking that the present invention provides, to the skill in above-described embodiment by the way of being readily apparent that those skilled in the art
Art means are converted, are replaced, are changed, and play the role of with the present invention in relevant art means it is essentially identical, realize
Goal of the invention it is also essentially identical, the technical solution formed in this way is finely adjusted above-described embodiment to be formed, this technology
Scheme is still fallen in protection scope of the present invention.
Claims (2)
1. a kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and device, which is characterized in that in the combined floodgate of switch
Stabilization time（The Y times）Interior increase detects failure active trip avoidance function, increases locking opening time after the completion of Y timing, herein
It does not trip detecting failure in time.
2. a kind of failure separation method for preventing non-faulting region from repeatedly having a power failure according to claim 1 and device, special
Sign is, when certain region is broken down in supply line, executes following steps：
（1）Then substation's automatic circuit separating brake is delayed coincidence, sectionaliser detection is so unilateral that establish the timing of beginning X by cable, and automatic circuit carries out Y meters
When；
（2）X timing is completed, and sectionaliser closes a floodgate；
（3）Sectionaliser, which closes a floodgate, to be completed, and Y timing, sectionaliser and the detection whether faulty hair of circuit in automatic circuit Y timing courses are started
It is raw；
If faulty generation, the locking of active separating brake；
If fault-free occurs, timing continues, until Y timing is completed；
（4）Locking separating brake timing is proceeded by after the completion of Y timing；
It is latched line failure in opening time, is latched separating brake；
Locking opening time terminates, unlocking separating brake.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307065.4A CN108808633A (en) | 2017-05-04 | 2017-05-04 | A kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710307065.4A CN108808633A (en) | 2017-05-04 | 2017-05-04 | A kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108808633A true CN108808633A (en) | 2018-11-13 |
Family
ID=64054450
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710307065.4A Pending CN108808633A (en) | 2017-05-04 | 2017-05-04 | A kind of failure separation method for preventing non-faulting region from repeatedly having a power failure and device |
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| CN (1) | CN108808633A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036731A (en) * | 2021-04-25 | 2021-06-25 | 武汉大学 | Point-to-point communication power distribution network feeder fault isolation method and self-healing system |
| CN113991622A (en) * | 2021-10-29 | 2022-01-28 | 武汉市速隔迅联电力科技有限公司 | Feeder automation voltage-loss brake-separating delay strategy and setting method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026051A (en) * | 2016-07-26 | 2016-10-12 | 国电南瑞科技股份有限公司 | Fixed-value adaptive voltage and current time type on-site feeder automation method |
| CN106300285A (en) * | 2016-08-04 | 2017-01-04 | 国家电网公司 | It is independent of the self adaptation type feeder automation fault handling method on the spot of network topology |
-
2017
- 2017-05-04 CN CN201710307065.4A patent/CN108808633A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026051A (en) * | 2016-07-26 | 2016-10-12 | 国电南瑞科技股份有限公司 | Fixed-value adaptive voltage and current time type on-site feeder automation method |
| CN106300285A (en) * | 2016-08-04 | 2017-01-04 | 国家电网公司 | It is independent of the self adaptation type feeder automation fault handling method on the spot of network topology |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113036731A (en) * | 2021-04-25 | 2021-06-25 | 武汉大学 | Point-to-point communication power distribution network feeder fault isolation method and self-healing system |
| CN113991622A (en) * | 2021-10-29 | 2022-01-28 | 武汉市速隔迅联电力科技有限公司 | Feeder automation voltage-loss brake-separating delay strategy and setting method |
| CN113991622B (en) * | 2021-10-29 | 2023-07-18 | 武汉市速隔迅联电力科技有限公司 | Feeder line automatic voltage-losing and switching-off delay strategy and setting method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181113 |