CN202474857U - Intelligent distribution network with failure automatic isolation and self-clearing functions - Google Patents
Intelligent distribution network with failure automatic isolation and self-clearing functions Download PDFInfo
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- CN202474857U CN202474857U CN2012201066924U CN201220106692U CN202474857U CN 202474857 U CN202474857 U CN 202474857U CN 2012201066924 U CN2012201066924 U CN 2012201066924U CN 201220106692 U CN201220106692 U CN 201220106692U CN 202474857 U CN202474857 U CN 202474857U
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Abstract
The utility model discloses an intelligent distribution network with failure automatic isolation and self-clearing functions, which comprises two transformer substations, circuit breakers and load switches, wherein a first bus bar in the first transformer substation is connected with a first load switch via a first circuit breaker; the first load switch is connected with a second load switch via a second circuit breaker; the second load switch is connected with the third load switch via a third circuit breaker; the third load switch is connected with one end of a standby power source; a second bus bar in a second transformer substation is connected with a fourth load switch via a fourth circuit breaker; the fourth load switch is connected with a fifth load switch via a fifth circuit breaker; the fifth load switch is connected with the sixth load switch via a sixth circuit breaker; and the sixth load switch is connected with the other end of the standby power source via a seventh circuit breaker. The utility model has the advantage that identification and self-adaptive protection to different failure of the distribution network, as well as automatic power supply recovery after failure isolation are realized.
Description
[technical field]
The utility model relates to the power distribution network technical field, specifically, is a kind of intelligent power distribution net with the automatic isolation of fault and fault self-recovery function.
[background technology]
Distribution line (also claiming feeder line, feeder line) is the important component part of distribution system, and the research of intelligent power distribution net still is in the stage of fumbling, and present feeder automation is the key and the core of intelligent power distribution net.Feeder automation automatically detects and excises fault section after referring to that mainly feeder line breaks down, and then recovers a kind of technology of non-fault section normal power supply.For a long time, because thinking little of and the economic condition restriction on the guiding theory, the feeder automation level is not high, and the reliability that the user is supplied power can not get ensureing.
Early stage feeder automation is a manual mode, and it is made up of current quick, the outlet breaker, the on-load switch that is installed in other position and the fault detector that are installed in change (joining) power station feeder line exit.After any section fault of feeder line, the current quick action, the outlet breaker would trip, the on-load switch isolated fault section at two ends is drawn back in indicated position manual work according to fault detector, and then close circuit breaker is recovered the not power supply of faulty component again.This system constitutes simple, but automaticity is low, and interruption duration is long.
[utility model content]
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of intelligent power distribution net with the automatic isolation of fault and fault self-recovery function is provided.
The purpose of the utility model realizes through following technical scheme:
A kind of intelligent power distribution net with the automatic isolation of fault and fault self-recovery function comprises two transformer stations, circuit breaker and on-load switch; First bus row of first transformer station links to each other with first on-load switch through first circuit breaker; First on-load switch links to each other with second on-load switch through second circuit breaker; Second on-load switch links to each other with the 3rd on-load switch through the 3rd circuit breaker, and the 3rd on-load switch links to each other with an end of stand-by power supply;
Second bus row of second transformer station links to each other with the 4th on-load switch through the 4th circuit breaker; The 4th on-load switch links to each other with the 5th on-load switch through the 5th circuit breaker; The 5th on-load switch links to each other with the 6th on-load switch through the 6th circuit breaker, and the 6th on-load switch links to each other with an other end of stand-by power supply through the 7th circuit breaker;
Described first circuit breaker is furnished with first feeder line and does not have path protection;
Described second circuit breaker is furnished with second feeder line and does not have path protection;
Described the 3rd circuit breaker is furnished with the 3rd feeder line and does not have path protection;
Described the 4th circuit breaker is furnished with the 4th feeder line and does not have path protection;
Described the 5th circuit breaker is furnished with the 5th feeder line and does not have path protection;
Described the 6th circuit breaker is furnished with the 6th feeder line and does not have path protection;
Described the 7th circuit breaker is furnished with the 7th feeder line and does not have path protection;
Compared with prior art, the good effect of the utility model is:
The utility model is realized the identification of power distribution network different faults, the adaptive guard of different faults, and the power supply after the Fault Isolation recovers automatically.Institute suggests plans and can not rely on communication port, excises fault section selectively, apace, satisfies the requirement of rapidity, selectivity and the reliability of intelligent power distribution net Fault Isolation; Institute suggests plans and can recover non-fault section power supply apace, has the fault self-recovery ability, satisfies the requirement of power distribution network safe and stable operation, satisfies the requirement of China's intelligent power distribution net development.
[description of drawings]
The structural representation of Fig. 1 the utility model;
The structural representation of Fig. 2 present embodiment 1;
Label in the accompanying drawing is: 10 first transformer stations, 20 second transformer stations, 30 stand-by power supplies; 12 first circuit breakers, 22 second circuit breakers, 32 the 3rd circuit breakers, 42 the 4th circuit breakers, 52 the 5th circuit breakers, 62 the 6th circuit breakers, 72 the 7th circuit breakers; 13 first on-load switches, 23 second on-load switches, 33 the 3rd on-load switches, 43 the 4th on-load switches, 53 the 5th on-load switches, 63 the 6th on-load switches; 14 first feeder lines do not have path protection, and 24 second feeder lines do not have path protection, and 34 the 3rd feeder lines do not have path protection, and 44 the 4th feeder lines do not have path protection, and 54 the 5th feeder lines do not have path protection, and 64 the 6th feeder lines do not have path protection, and 74 the 7th feeder lines do not have path protection; The F fault point.
[embodiment]
Below provide the utility model a kind of embodiment with intelligent power distribution net of automatic isolation of fault and fault self-recovery function.
Embodiment 1
See also and attach Fig. 1 and 2, a kind of intelligent power distribution net with the automatic isolation of fault and fault self-recovery function comprises two transformer stations, circuit breaker and on-load switch; First bus row 11 of first transformer station 10 links to each other with first on-load switch 13 through first circuit breaker 12; First on-load switch 13 links to each other with second on-load switch 23 through second circuit breaker 22; Second on-load switch 23 links to each other with the 3rd on-load switch 33 through the 3rd circuit breaker 32, and the 3rd on-load switch 33 links to each other with an end of stand-by power supply 30;
Second bus, 21 rows of second transformer station 20 link to each other with the 4th on-load switch 43 through the 4th circuit breaker 42; The 4th on-load switch 43 links to each other with the 5th on-load switch 53 through the 5th circuit breaker 52; The 5th on-load switch 53 links to each other with the 6th on-load switch 63 through the 6th circuit breaker 62, and the 6th on-load switch 63 links to each other with an other end of stand-by power supply 30 through the 7th circuit breaker 72;
Described first circuit breaker 12 is furnished with first feeder line is not had path protection 14;
Described second circuit breaker 22 is furnished with second feeder line is not had path protection 24;
Described the 3rd circuit breaker 32 is furnished with the 3rd feeder line is not had path protection 34;
Described the 4th circuit breaker 42 is furnished with the 4th feeder line is not had path protection 44;
Described the 5th circuit breaker 52 is furnished with the 5th feeder line is not had path protection 54;
Described the 6th circuit breaker 62 is furnished with the 6th feeder line is not had path protection 64;
Described the 7th circuit breaker 72 is furnished with the 7th feeder line is not had path protection 74;
Such as in reality, there is a fault point F between second on-load switch 23 and the 3rd circuit breaker 32, accident analysis is the theoretical foundation of relaying protection, also is based on the basis of the feeder automation of protected mode.Traditional accident analysis is based on the Linear System Analysis theory.After the three-phase symmetric fault took place in such system, system is removable from the fault point was divided into two independently systems, and no path protection will lose operation condition.But the practical power systems element is not the linear element on the complete meaning; In conjunction with laboratory experiment and real system failure logging; The theoretical analysis result of comparative studies three-phase fault and actual result; For the no path protection research of symmetric fault provides the basis, the development power system fault analysis is theoretical.
Based on above-mentioned accident analysis, proposition three-phase symmetric fault does not have the path protection operating criterion and in relay, realizes.For radial feeder line, the fault detect of non-transformer end need further to inquire into the protection operating criterion, it also is based upon on the accident analysis basis.
Distribution complex structure, operational mode are changeable.With the adaptive guard is the basis, and research is applicable to the adaptive technique of feeder automation.The research of feeder automation adaptive technique will be to be applicable to the different system operational mode, the development of the adaptive guard of different faults type, and this technology can automatically change system's operating structure, and can adapt to the system configuration after changing.
On the basis of above-mentioned research, actual in conjunction with the power distribution network of China, propose a typical actual intelligent power distribution net fault of China's power distribution network that is fit to and isolate automatically and the fault self-recovery scheme; Realize the identification of power distribution network different faults, the adaptive guard of different faults, the power supply after the Fault Isolation recovers automatically.Institute suggests plans and can not rely on communication port, excises fault section selectively, apace, satisfies the requirement of rapidity, selectivity and the reliability of intelligent power distribution net Fault Isolation; Institute suggests plans and can recover non-fault section power supply apace, has the fault self-recovery ability, satisfies the requirement of power distribution network safe and stable operation, satisfies the requirement of China's intelligent power distribution net development.
The above only is the preferred implementation of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model design; Can also make some improvement and retouching, these improvement and retouching also should be regarded as in the protection range of the utility model.
Claims (8)
1. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function is characterized in that, comprises two transformer stations, circuit breaker and on-load switch; First bus row of first transformer station links to each other with first on-load switch through first circuit breaker; First on-load switch links to each other with second on-load switch through second circuit breaker; Second on-load switch links to each other with the 3rd on-load switch through the 3rd circuit breaker, and the 3rd on-load switch links to each other with an end of stand-by power supply;
Second bus row of second transformer station links to each other with the 4th on-load switch through the 4th circuit breaker; The 4th on-load switch links to each other with the 5th on-load switch through the 5th circuit breaker; The 5th on-load switch links to each other with the 6th on-load switch through the 6th circuit breaker, and the 6th on-load switch links to each other with an other end of stand-by power supply through the 7th circuit breaker.
2. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function as claimed in claim 1 is characterized in that described first circuit breaker is furnished with first feeder line and does not have path protection.
3. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function as claimed in claim 1 is characterized in that described second circuit breaker is furnished with second feeder line and does not have path protection.
4. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function as claimed in claim 1 is characterized in that described the 3rd circuit breaker is furnished with the 3rd feeder line and does not have path protection.
5. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function as claimed in claim 1 is characterized in that described the 4th circuit breaker is furnished with the 4th feeder line and does not have path protection.
6. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function as claimed in claim 1 is characterized in that described the 5th circuit breaker is furnished with the 5th feeder line and does not have path protection.
7. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function as claimed in claim 1 is characterized in that described the 6th circuit breaker is furnished with the 6th feeder line and does not have path protection.
8. the intelligent power distribution net with the automatic isolation of fault and fault self-recovery function as claimed in claim 1 is characterized in that described the 7th circuit breaker is furnished with the 7th feeder line and does not have path protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201066924U CN202474857U (en) | 2012-03-20 | 2012-03-20 | Intelligent distribution network with failure automatic isolation and self-clearing functions |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201066924U CN202474857U (en) | 2012-03-20 | 2012-03-20 | Intelligent distribution network with failure automatic isolation and self-clearing functions |
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| Publication Number | Publication Date |
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| CN202474857U true CN202474857U (en) | 2012-10-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012201066924U Expired - Lifetime CN202474857U (en) | 2012-03-20 | 2012-03-20 | Intelligent distribution network with failure automatic isolation and self-clearing functions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451381A (en) * | 2016-11-21 | 2017-02-22 | 贵州电网有限责任公司电力科学研究院 | Distributed fault checking and isolating method with adaptive characteristic |
| CN106532683A (en) * | 2016-10-14 | 2017-03-22 | 国网上海市电力公司 | Self-healing method of 110kV transformer station hand-in-hand power supply |
-
2012
- 2012-03-20 CN CN2012201066924U patent/CN202474857U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106532683A (en) * | 2016-10-14 | 2017-03-22 | 国网上海市电力公司 | Self-healing method of 110kV transformer station hand-in-hand power supply |
| CN106451381A (en) * | 2016-11-21 | 2017-02-22 | 贵州电网有限责任公司电力科学研究院 | Distributed fault checking and isolating method with adaptive characteristic |
| CN106451381B (en) * | 2016-11-21 | 2019-02-19 | 贵州电网有限责任公司电力科学研究院 | A kind of distributed fault detection and partition method with fit characteristics |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |