CN205039539U - A circuit breaker configuration structure on post for high -pressure overhead wire - Google Patents
A circuit breaker configuration structure on post for high -pressure overhead wire Download PDFInfo
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- CN205039539U CN205039539U CN201520677983.2U CN201520677983U CN205039539U CN 205039539 U CN205039539 U CN 205039539U CN 201520677983 U CN201520677983 U CN 201520677983U CN 205039539 U CN205039539 U CN 205039539U
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- pole
- circuit breaker
- overhead wire
- distribution transformer
- mounted circuit
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Abstract
The utility model discloses a circuit breaker configuration structure on post for high -pressure overhead wire sets up column switch and connects the pole transformer structure on high -pressure overhead wire, column switch connects the neighbour to stand indoor distribution transformer structure and column switch and connects user distribution transformer structure, and respectively to circuit breaker on the post that is used for connecting rod -type transformer structure, an on the post circuit breaker respectively according to the current quick breaking protection mode for $propping up connect stand on indoor distribution transformer's a post circuit breaker and be used for connecing user distribution transformer of neighbour, overcurrent protection mode and zero class of protection way dispose. The utility model discloses configuration scenarios is protected to the circuit breaker on opening up out reasonable, scientific post, and further the safe operation of firm feeder automation distribution network promotes the power supply service level comprehensively, has satisfied the needs of economic develop rapidly.
Description
Technical field
The utility model relates to a kind of configuration structure of electric distribution network overhead wire, is specifically related to a kind of pole-mounted circuit breaker configuration structure for high voltage overhead lines.
Background technology
Feed line automatization system is as the important component part of distribution automation, can realize carrying out fault location, Fault Isolation, non-faulting block supply rapidly to feeder line to recover, reduce power failure range, shortening failure recovery time that fault causes to greatest extent, and can realize monitoring power distribution network normal operating condition, significant to raising power supply reliability.Realizing that feeder automation primarily works is will transform existing overhead wire grid structure; pole-mounted circuit breaker is installed additional by reasonable distribution on built on stilts backbone; and it is alternative original fuse protected to utilize pole-mounted circuit breaker on overhead wire branch line, makes it bear control, contact, defencive function.
Power distribution network 10KV overhead transmission line generally adopts reclosing pre-accelerating protection mode, for the Radiation overhead transmission line connecing multiple-limb, can reduce the probability that transient fault develops into permanent fault for long distance.If branched line pole-mounted circuit breaker relaying configuration is unreasonable; branched line fault; all will cause higher level's protection misoperation; and then the amount of information such as protection act, switch changed position signal, fault current being supplied to feed line automatization system is conflicting; correct Self healing Strategy may be released by influential system; reduce the maximum efficiency that feed line automatization system restores electricity, finally affect the reliability of power distribution network.Visible pole-mounted circuit breaker relaying configuration correctness will be directly connected to the safe operation of whole piece circuit, grid equipment, and affects the reliable running of feeder automation function.
Utility model content
The purpose of this utility model is to provide a kind of pole-mounted circuit breaker configuration structure for high voltage overhead lines, high voltage overhead lines arranges on-pole switch and props up extension bar type transformer device structure, on-pole switch props up and connects stand indoor distribution transformer structure and on-pole switch of neighbour and prop up and connect user's distribution transformer structure, and respectively to the pole-mounted circuit breaker for connecting rod-type transformer device structure, for to connect neighbour stand indoor distribution transformer pole-mounted circuit breaker and for connecing the pole-mounted circuit breaker of user's distribution transformer respectively according to current quick mode, overcurrent protection mode and zero stream protected mode are configured.The utility model opens rationally, the pole-mounted circuit breaker relaying configuration scheme of science, and the safe operation of further firm feeder automation power distribution network, General Promotion electric service level, meets the needs of economic develop rapidly.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
For a pole-mounted circuit breaker configuration structure for high voltage overhead lines, be characterized in, this configuration structure comprises:
At least one on-pole switch props up extension bar type transformer device structure, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
At least one on-pole switch props up and meets neighbour and to stand indoor distribution transformer structure, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
At least one on-pole switch props up and connects user's distribution transformer structure, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end.
Preferably, on-pole switch described at least one props up extension bar type transformer device structure and comprises:
First pole-mounted circuit breaker, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
Pole transformer, is connected with described first pole-mounted circuit breaker.
Preferably, on-pole switch described at least one props up and connects neighbour's indoor distribution transformer structure of standing and comprise:
Second pole-mounted circuit breaker, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
Load plug-in strip, is connected with described second pole-mounted circuit breaker;
Indoor fuse, is connected with described load plug-in strip;
Neighbour stands interior distribution transformer, is connected with described indoor fuse.
Preferably, on-pole switch described at least one props up and connects user's distribution transformer structure and comprise:
3rd pole-mounted circuit breaker, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
Service entrance switch, is connected with described second pole-mounted circuit breaker;
User's distribution transformer, is connected with described service entrance switch.
The utility model compared with prior art has the following advantages:
A kind of pole-mounted circuit breaker configuration structure for high voltage overhead lines disclosed in the utility model, high voltage overhead lines is arranged respectively on-pole switch props up extension bar type transformer device structure, on-pole switch props up and connect stand indoor distribution transformer structure and on-pole switch of neighbour and prop up and connect user's distribution transformer structure; And respectively to the pole-mounted circuit breaker for connecting rod-type transformer device structure, adopt different equipping ruless for connecing the stand pole-mounted circuit breaker of indoor distribution transformer and the pole-mounted circuit breaker for connecing user's distribution transformer of neighbour.The utility model is by carrying out the analysis and research of the power distribution network actual conditions such as primary connection, reclosing pre-accelerating protection feature, a composite attribute connect to high-tension overhead line; open pole-mounted circuit breaker relaying configuration scheme that is reasonable, science; the safe operation of further firm feeder automation power distribution network; General Promotion electric service level, meets the needs of economic develop rapidly.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of a kind of pole-mounted circuit breaker configuration structure for high voltage overhead lines of the utility model.
Embodiment
Below in conjunction with accompanying drawing, by describing a preferably specific embodiment in detail, the utility model is further elaborated.
As shown in Figure 1, for a pole-mounted circuit breaker configuration structure for high voltage overhead lines, this configuration structure comprises: at least one on-pole switch props up extension bar type transformer device structure 1, at least one on-pole switch props up and connects user's distribution transformer structure 2 and at least one on-pole switch and prop up and meet neighbour and to stand indoor distribution transformer structure 3.
Wherein, at least one on-pole switch props up extension bar type transformer device structure 1 and is arranged between the overhead wire head end of high voltage overhead lines and overhead wire end; At least one on-pole switch props up and connects neighbour's indoor distribution transformer structure 3 of standing and be arranged between the overhead wire head end of high voltage overhead lines and overhead wire end; At least one on-pole switch props up and connects user's distribution transformer structure 2 and be arranged between the overhead wire head end of high voltage overhead lines and overhead wire end.
At least one on-pole switch props up extension bar type transformer device structure 1 and comprises: the first pole-mounted circuit breaker 11, pole transformer 12.Wherein, the first pole-mounted circuit breaker 11 is arranged between the overhead wire head end of high voltage overhead lines and overhead wire end; Pole transformer 12 is connected with the first pole-mounted circuit breaker 11.
At least one on-pole switch props up and connects neighbour's indoor distribution transformer structure 3 of standing and comprise: the second pole-mounted circuit breaker 31, load plug-in strip 32, indoor fuse 33 and neighbour stand interior distribution transformer 34.Wherein, the second pole-mounted circuit breaker 31 is arranged between the overhead wire head end of high voltage overhead lines and overhead wire end; Load plug-in strip 32 is connected with the second pole-mounted circuit breaker 31; Indoor fuse 33 is connected with load plug-in strip 32; Neighbour's interior distribution transformer 34 of standing is connected with indoor fuse 33.
In the utility model, the second pole-mounted circuit breaker 31 output to neighbour stand indoor distribution transformer 34 high-pressure side occur phase fault, the second pole-mounted circuit breaker 31 current quick action tripping operation, by reclosing, ensure with higher level's power line protect selective.Neighbour stands indoor distribution transformer 34 low-pressure side phase fault, to be obtained coordinate by indoor fuse 33 with power line inverse-time overcurrent operating characteristics curve amp-second.On-pole switch, at urban district ~ suburban area, only configures current quick-breaking enough, only at countryside long transmission line, when distribution transforming high-pressure side phase fault non sensitivity, need augment overcurrent two sections, only need have with fuse operate time and coordinate.
At least one on-pole switch props up and connects user's distribution transformer structure 2 and comprise: the 3rd pole-mounted circuit breaker 21, service entrance switch 22 and user's distribution transformer 23.Wherein, the 3rd pole-mounted circuit breaker 21 is arranged between the overhead wire head end of high voltage overhead lines and overhead wire end; Service entrance switch 22 is connected with the second pole-mounted circuit breaker 31; User's distribution transformer 23 is connected with service entrance switch 22.
In the utility model, there is phase fault to user's distribution transformer 23 high-pressure side in the 3rd pole-mounted circuit breaker 21 output, the 3rd pole-mounted circuit breaker 21 current quick action tripping operation, by reclosing, ensures to protect selective with higher level's power line; User's distribution transformer 23 low-pressure side phase fault, to be obtained with the 3rd pole-mounted circuit breaker 21 overcurrent protection by user's distribution transformer 23 relaying protection and coordinates.
This collocation method concrete of a kind of pole-mounted circuit breaker configuration structure for high voltage overhead lines of the utility model comprises:
S1, props up extension bar type transformer device structure 1 at least one on-pole switch and is configured according to current quick mode, overcurrent protection mode and zero stream protected mode.This step S1 comprises:
For outdoor pole transformer 12, may be breakdown between outdoor pole transformer 12 to low-pressure side fuse.Therefore, for the current quick mode that on-pole switch props up extension bar type transformer device structure 1, adopt the low-pressure side phase fault of pole transformer 12 to have enough sensitivity and adjust.
S1.1, the current quick mode of on-pole switch being propped up to extension bar type transformer device structure 1 has enough sensitivity to adjust according to following formula to pole transformer low-pressure side phase fault:
I
dZ≤ I
line end Dmin2÷ K
lM;
Wherein, I
dmin2: line end phase-to phase fault electric current; K
lM: sensitivity coefficient; I
dZ: the current value of protection seting.
S1.2, the overcurrent protection mode of on-pole switch being propped up to extension bar type transformer device structure 1 is according to following formula, adjusts according to escaping sent maximum load current mode:
I
DZ≥K
k÷K
f×I
f.max；
Wherein, K
k: safety factor; K
f: resetting ratio; I
f.max: pole transformer maximum load current.
In the present embodiment, K
k=1.3, I
f.maxget the load current value of pole transformer, time delay 2s adjusts.
S1.3, the zero stream protected mode of on-pole switch being propped up to extension bar type transformer device structure 1 is according to following formula, adjusts according to through unbalance electric current when escaping pole transformer low-pressure side three-phase shortcircuit:
I
DZ≥K
KK
bpK
fiI
d.max；
Wherein, K
bp: current transformer homotype coefficient; K
fi: current transformer error; I
d.max: step down side three-phase shortcircuit maximum short circuit current.
In the present embodiment, K
k=1.3; When current transformer is dissimilar, K
bp=1; When the identical type of current transformer, K
bp=0.5; K
fi=0.1.
S2, at least one on-pole switch prop up connect neighbour stand indoor distribution transformer structure 2 according to current quick mode, overcurrent protection mode and zero stream protected mode be configured.This step S2 comprises:
S2.1, props up on-pole switch and connects the stand current quick mode of indoor distribution transformer structure 2 of neighbour and adjust to neighbour's indoor distribution transformer low-pressure side three short circuit current of standing according to following formula:
I
DZ≥K
k×I
D.max；
Wherein, I
d.max: step down side three-phase shortcircuit maximum short circuit current.
In the present embodiment, K
k=1.3, I
d.maxfor neighbour stands indoor distribution transformer 34 low-pressure side three-phase shortcircuit maximum short circuit current.
S2.2, props up to on-pole switch that to connect the stand overcurrent protection mode of indoor distribution transformer structure 2 of neighbour be according to following formula, adjusts according to escaping sent maximum load current mode:
I
DZ≥K
k÷K
f×I
f.max.
In the present embodiment, K
k=1.3, I
f.maxget the load current value of pole transformer, time delay 2s adjusts.
S2.3, to on-pole switch prop up connect neighbour stand indoor distribution transformer structure 2 zero stream protected mode be according to following formula, according to escape neighbour stand indoor distribution transformer low-pressure side three-phase shortcircuit time, flow through on high-tension side three phase unbalance current and adjust:
I
DZ≥K
KK
bpK
fiI
d.max。
In the present embodiment, K
k=1.3; When current transformer is dissimilar, K
bp=1; When the identical type of current transformer, K
bp=0.5; K
fi=0.1.
S3, at least one on-pole switch prop up connect user's distribution transformer 23 structure 3 according to current quick mode, overcurrent protection mode and zero stream protected mode be configured.This step S3 comprises:
S3.1, props up the current quick mode connecing user's distribution transformer 23 structure 3 and adjusts according to following formula docking user distribution transformer 23 low-pressure side three short circuit current to on-pole switch:
I
DZ≥K
k×I
D.max。
In the present embodiment, K
k=1.3, I
d.maxfor neighbour stands indoor distribution transformer 34 low-pressure side three-phase shortcircuit maximum short circuit current.
S3.2, propping up to on-pole switch the overcurrent protection mode connecing user's distribution transformer 23 structure 3 is according to following formula, adjusts according to escaping sent maximum load current mode:
I
DZ≥K
k÷K
f×I
f.max；
In the present embodiment, K
k=1.3, I
f.maxget the load current value of pole transformer, time delay 2s adjusts.
S3.3, to on-pole switch prop up connect user's distribution transformer 23 structure 3 zero stream protected mode be according to following formula, according to escape connect user's distribution transformer 23 low-pressure side three-phase shortcircuit time, flow through on high-tension side three phase unbalance current and adjust:
I
DZ≥K
KK
bpK
fiI
d.max。
In the present embodiment, K
k=1.3; When current transformer is dissimilar, K
bp=1; When the identical type of current transformer, K
bp=0.5; K
fi=0.1.
Although content of the present utility model has done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple amendment of the present utility model and substitute will be all apparent.Therefore, protection range of the present utility model should be limited to the appended claims.
Claims (4)
1. for a pole-mounted circuit breaker configuration structure for high voltage overhead lines, it is characterized in that, this configuration structure comprises:
At least one on-pole switch props up extension bar type transformer device structure, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
At least one on-pole switch props up and meets neighbour and to stand indoor distribution transformer structure, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
At least one on-pole switch props up and connects user's distribution transformer structure, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end.
2., as claimed in claim 1 for the pole-mounted circuit breaker configuration structure of high voltage overhead lines, it is characterized in that, on-pole switch described at least one props up extension bar type transformer device structure and comprises:
First pole-mounted circuit breaker, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
Pole transformer, is connected with described first pole-mounted circuit breaker.
3. as claimed in claim 1 for the pole-mounted circuit breaker configuration structure of high voltage overhead lines, it is characterized in that, on-pole switch described at least one props up and connects neighbour's indoor distribution transformer structure of standing and comprise:
Second pole-mounted circuit breaker, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
Load plug-in strip, is connected with described second pole-mounted circuit breaker;
Indoor fuse, is connected with described load plug-in strip;
Neighbour stands interior distribution transformer, is connected with described indoor fuse.
4. as claimed in claim 3 for the pole-mounted circuit breaker configuration structure of high voltage overhead lines, it is characterized in that, on-pole switch described at least one props up and connects user's distribution transformer structure and comprise:
3rd pole-mounted circuit breaker, is arranged between the overhead wire head end of described high voltage overhead lines and overhead wire end;
Service entrance switch, is connected with described second pole-mounted circuit breaker;
User's distribution transformer, is connected with described service entrance switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520677983.2U CN205039539U (en) | 2015-09-02 | 2015-09-02 | A circuit breaker configuration structure on post for high -pressure overhead wire |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520677983.2U CN205039539U (en) | 2015-09-02 | 2015-09-02 | A circuit breaker configuration structure on post for high -pressure overhead wire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205039539U true CN205039539U (en) | 2016-02-17 |
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|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186497A (en) * | 2015-09-02 | 2015-12-23 | 国网上海市电力公司 | Pole-mounted circuit breaker configuration structure and configuration method for high-voltage overhead line |
-
2015
- 2015-09-02 CN CN201520677983.2U patent/CN205039539U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105186497A (en) * | 2015-09-02 | 2015-12-23 | 国网上海市电力公司 | Pole-mounted circuit breaker configuration structure and configuration method for high-voltage overhead line |
| CN105186497B (en) * | 2015-09-02 | 2018-11-09 | 国网上海市电力公司 | A kind of pole-mounted circuit breaker configuration structure and configuration method for high voltage overhead lines |
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| GR01 | Patent grant |