CN104103450A - Intelligent branch division vacuum circuit breaker with built-in zero-sequence current transformers - Google Patents
Intelligent branch division vacuum circuit breaker with built-in zero-sequence current transformers Download PDFInfo
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- CN104103450A CN104103450A CN201310120826.7A CN201310120826A CN104103450A CN 104103450 A CN104103450 A CN 104103450A CN 201310120826 A CN201310120826 A CN 201310120826A CN 104103450 A CN104103450 A CN 104103450A
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- circuit breaker
- sequence current
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Abstract
The invention relates to an intelligent branch division vacuum circuit breaker with built-in zero-sequence current transformers. The circuit breaker includes a circuit breaker casing and the zero-sequence current transformers. A vacuum arc extinguishing chamber is arranged in the circuit breaker casing. An upper end of the circuit breaker casing is provided with a voltage transformer. The vacuum arc extinguishing chamber is connected with the zero-sequence current transformers. The bottom part of the circuit breaker casing is provided with bases. One side of the bottom part of the circuit breaker casing is provided with a grounding terminal. A switch-on and switch-off pull rod mechanism is arranged on the circuit breaker casing. The intelligent branch division vacuum circuit breaker with the built-in zero-sequence current transformers is simple in structure and through addition of the zero-sequence current transformers into the circuit breaker casing, inter-phase current can be output and line zero-sequence current can also be output so that zero sequence and over-current protection can be carried out effectively.
Description
Technical field
The present invention relates to a kind of intelligent branch demarcation vacuum circuit breaker of built-in zero sequence current mutual inductor, belong to the safe connection device technical field of outdoor grid.
Background technology
In recent years, along with the enforcement of projects to upgrade rural power grids, rural area 10KV distribution line is transform as the phase three-wire three supply power mode of isolated neutral by two original line one ground supply power modes.The change of 10KV distribution line supply power mode has strengthened the insulation level of distribution line, has reduced the trip-out rate of distribution line, has improved power supply reliability, has reduced line loss, significant.But take in the actual motion of rural area 10KV distribution line of new supply power mode, often there is single phase ground fault, particularly, under the severe weather conditions such as rainy season, strong wind and snow, single phase ground fault frequently occurs especially, has had a strong impact on safety, the economical operation of converting equipment and power distribution network.
Along with Guo Wang company progressively strengthens the management intensity to County Power Plant safety in production, operation and good service, each County Power Plant also strengthens the power distribution station line loss of Liao Dui small towns power supply station jurisdiction, the appraisal management of equipment safety operation, but because technological means does not catch up with, make power supply station large to rural power work management difficulty, economic technique analysis also relies on artificial estimation.
Summary of the invention
For above-mentioned defect, the object of the present invention is to provide a kind of simple in structurely, there is the intelligent branch demarcation vacuum circuit breaker of a kind of built-in zero sequence current mutual inductor that is applicable to 10KV overhead transmission line of zero sequence and overcurrent protection.
The technical solution adopted in the present invention is for this reason: comprise case for circuit breaker and zero sequence current mutual inductor, in described case for circuit breaker, be provided with vacuum interrupter, described case for circuit breaker upper end is provided with voltage transformer, described vacuum interrupter is connected with zero sequence current mutual inductor, case for circuit breaker bottom is provided with base, one side of case for circuit breaker bottom is provided with earth terminal, is equipped with divide-shut brake drag link mechanism on case for circuit breaker.
In the bottom of described case for circuit breaker, be provided with aviation socket.
The electric current of described zero sequence current mutual inductor detects and is limited to 600A.
Advantage of the present invention is: the present invention is simple in structure, by add zero sequence current mutual inductor in case for circuit breaker, can either export three-phase current, again can outlet line zero-sequence current, can effectively carry out zero, overcurrent protection.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
In figure, 1 is case for circuit breaker, the 2nd, zero sequence current mutual inductor, the 3rd, vacuum interrupter, the 4th, voltage transformer, the 5th, base, the 6th, earth terminal, the 7th, divide-shut brake drag link mechanism, the 8th, aviation socket.
Embodiment
A kind of intelligent branch demarcation vacuum circuit breaker of built-in zero sequence current mutual inductor, comprise case for circuit breaker 1 and zero sequence current mutual inductor 2, in described case for circuit breaker 1, be provided with vacuum interrupter 3, described case for circuit breaker 1 upper end is provided with voltage transformer 4, described vacuum interrupter 3 is connected with zero sequence current mutual inductor 2, case for circuit breaker 1 bottom is provided with base 5, and a side of case for circuit breaker 1 bottom is provided with earth terminal 6, is equipped with divide-shut brake drag link mechanism 7 on case for circuit breaker 1.
In the bottom of case for circuit breaker 1 of the present invention, be provided with aviation socket 8.
The electric current of zero sequence current mutual inductor 2 of the present invention detects and is limited to 600A.
Claims (3)
1. the intelligent branch demarcation vacuum circuit breaker of a built-in zero sequence current mutual inductor, it is characterized in that, comprise case for circuit breaker and zero sequence current mutual inductor, in described case for circuit breaker, be provided with vacuum interrupter, described case for circuit breaker upper end is provided with voltage transformer, and described vacuum interrupter is connected with zero sequence current mutual inductor, and case for circuit breaker bottom is provided with base, one side of case for circuit breaker bottom is provided with earth terminal, is equipped with divide-shut brake drag link mechanism on case for circuit breaker.
2. the intelligent branch demarcation vacuum circuit breaker of a kind of built-in zero sequence current mutual inductor according to claim 1, is characterized in that, in the bottom of described case for circuit breaker, is provided with aviation socket.
3. the intelligent branch demarcation vacuum circuit breaker of a kind of built-in zero sequence current mutual inductor according to claim 1, is characterized in that, the electric current of described zero sequence current mutual inductor detects and is limited to 600A.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120826.7A CN104103450A (en) | 2013-04-09 | 2013-04-09 | Intelligent branch division vacuum circuit breaker with built-in zero-sequence current transformers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310120826.7A CN104103450A (en) | 2013-04-09 | 2013-04-09 | Intelligent branch division vacuum circuit breaker with built-in zero-sequence current transformers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104103450A true CN104103450A (en) | 2014-10-15 |
Family
ID=51671497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310120826.7A Pending CN104103450A (en) | 2013-04-09 | 2013-04-09 | Intelligent branch division vacuum circuit breaker with built-in zero-sequence current transformers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104103450A (en) |
-
2013
- 2013-04-09 CN CN201310120826.7A patent/CN104103450A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141015 |