CN204029743U - A kind of definite purpose circuit breaker of low pressure anti-islanding device - Google Patents
A kind of definite purpose circuit breaker of low pressure anti-islanding device Download PDFInfo
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- CN204029743U CN204029743U CN201420110668.7U CN201420110668U CN204029743U CN 204029743 U CN204029743 U CN 204029743U CN 201420110668 U CN201420110668 U CN 201420110668U CN 204029743 U CN204029743 U CN 204029743U
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- single chip
- tripping mechanism
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- islanding
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- 230000005540 biological transmission Effects 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
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Abstract
The utility model provides a kind of low pressure anti-islanding device definite purpose circuit breaker, it comprises the anti-combined floodgate part of anti-islanding and route protection part, in described route protection part, the output of current signal collecting unit is connected with the input of single chip control unit, the output of single chip control unit is connected with fault distinguishing unit input, the output of fault distinguishing unit is connected with the input of signal driving unit, the output of signal driving unit and the control end of tripping mechanism, the trace that the operating mechanism of tripping mechanism is provided with by draw bar and anti-making electromagnet is for being in transmission connection, anti-making electromagnet is by the connection of instrument transformer and control circuit and release power supply terminal.
Description
Technical field
The utility model relates to a kind of definite purpose circuit breaker of low pressure anti-islanding device.
Background technology
The vacuum degree of current transducer and microcomputer monitoring vacuum packet, it adopts wireless signal transmission to receive, but the vacuum circuit-breaker of 110,000 more than KV can not be detected, thus also cannot eliminate island effect, very large potential safety hazard is brought to electric power overhaul personnel, and can not be energized for a long time in the product of routine, once tripping operation will power-off, not so can coil be burnt out.
Summary of the invention
The utility model provides a kind of low pressure anti-islanding device definite purpose circuit breaker, and it can eliminate island effect, improves fail safe.
The utility model have employed following technical scheme: a kind of low pressure anti-islanding device definite purpose circuit breaker, it is characterized in that it comprises the anti-combined floodgate part of anti-islanding and route protection part, the anti-combined floodgate part of described anti-islanding comprises release power supply terminal, instrument transformer, anti-making electromagnet, draw bar, described route protection part comprises current signal collecting unit, single chip control unit, fault distinguishing unit, signal driving unit and tripping mechanism, the described output of current signal collecting unit is connected with the input of single chip control unit, the output of single chip control unit is connected with fault distinguishing unit input, the output of fault distinguishing unit is connected with the input of signal driving unit, the output of signal driving unit and the control end of tripping mechanism, the trace that the operating mechanism of tripping mechanism is provided with by draw bar and anti-making electromagnet is for being in transmission connection, anti-making electromagnet is by the connection of instrument transformer and control circuit and release power supply terminal, current signal collecting unit gathers electric current and current signal is sent to single chip control unit, control fault identification unit is carried out Fault Identification by single chip control unit, when a failure occurs, fault distinguishing unit exports and sends drive singal by the action of signal driving unit driving tripping mechanism, tripping mechanism is by anti-making electromagnet, instrument transformer and control circuit control to be in trip status after release power supply terminal and isolated island voltage disconnect.
Described anti-making electromagnet and tripping mechanism are set to one.Described single chip control unit is connected with parameter adjustment unit.
The utility model has following beneficial effect: after have employed above technical scheme, and the utility model, when distribution transforming bus interruption maintenance, drops into low pressure anti-islanding device and produces disturbance, eliminates island effect, increases by one security perimeter to electric power overhaul personnel.The utility model adopts current signal collecting unit to carry out various electric current in Acquisition Circuit, the mutual inductor coil number of turn is high, sampling accurately, and adopt single-chip microcomputer control program, computing is accurate, the electronic product performance be made up of integrated circuit than tradition is reliable, response is fast, the utility model can bear longer specified short time withstand current, maximum holding likes 2S, anti-making electromagnet of the present utility model and tripping mechanism integrated unit, anti-like this making electromagnet and tripping mechanism integrated unit also can be energized work for a long time, prevent breaker closing, make product remain on trip status always.Could close a floodgate after anti-making electromagnet and the power-off of tripping mechanism integrated unit.The operate time of protection t1 adjustment of long delay protection function sets up 0 grade, and long delay protection function of transshipping when being transferred to 0 grade is closed; By the design of amendment software program; parameter in adjustment short-circuit characteristic; simultaneously through parameter compatibility debugging and sample calculating accurately; the operate time of protection t2 delay stepsize reaching short circuit short time-delay defencive function is the scope of 1-2-3 second; the utility model specified short time withstand current time is maximum reaches 3 seconds, is 10 times of domestic common product.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Embodiment
In FIG, the utility model provides a kind of low pressure anti-islanding device definite purpose circuit breaker, it is characterized in that it comprises the anti-combined floodgate part of anti-islanding and route protection part, the anti-combined floodgate part of described anti-islanding comprises release power supply terminal, instrument transformer, anti-making electromagnet, draw bar, described route protection part comprises current signal collecting unit, single chip control unit, fault distinguishing unit, signal driving unit and tripping mechanism, the described output of current signal collecting unit is connected with the input of single chip control unit, the output of single chip control unit is connected with fault distinguishing unit input, the output of fault distinguishing unit is connected with the input of signal driving unit, the output of signal driving unit and the control end of tripping mechanism, the trace that the operating mechanism of tripping mechanism is provided with by draw bar and anti-making electromagnet is for being in transmission connection, anti-making electromagnet and tripping mechanism are set to one, anti-making electromagnet is by the connection of instrument transformer and control circuit and release power supply terminal, current signal collecting unit gathers electric current and current signal is sent to single chip control unit, control fault identification unit is carried out Fault Identification by single chip control unit, when a failure occurs, fault distinguishing unit exports and sends drive singal by the action of signal driving unit driving tripping mechanism, tripping mechanism is by anti-making electromagnet, instrument transformer and control circuit control to be in trip status after release power supply terminal and isolated island voltage disconnect, single chip control unit is connected with parameter adjustment unit.
Claims (3)
1. a low pressure anti-islanding device definite purpose circuit breaker, it is characterized in that it comprises the anti-combined floodgate part of anti-islanding and route protection part, the anti-combined floodgate part of described anti-islanding comprises release power supply terminal, instrument transformer, anti-making electromagnet, draw bar, described route protection part comprises current signal collecting unit, single chip control unit, fault distinguishing unit, signal driving unit and tripping mechanism, the described output of current signal collecting unit is connected with the input of single chip control unit, the output of single chip control unit is connected with fault distinguishing unit input, the output of fault distinguishing unit is connected with the input of signal driving unit, the output of signal driving unit and the control end of tripping mechanism, the trace that the operating mechanism of tripping mechanism is provided with by draw bar and anti-making electromagnet is for being in transmission connection, anti-making electromagnet is by the connection of instrument transformer and control circuit and release power supply terminal, current signal collecting unit gathers electric current and current signal is sent to single chip control unit, control fault identification unit is carried out Fault Identification by single chip control unit, when a failure occurs, fault distinguishing unit exports and sends drive singal by the action of signal driving unit driving tripping mechanism, tripping mechanism is by anti-making electromagnet, instrument transformer and control circuit control to be in trip status after release power supply terminal and isolated island voltage disconnect.
2. low pressure anti-islanding device definite purpose circuit breaker according to claim 1, is characterized in that described anti-making electromagnet and tripping mechanism are set to one.
3. low pressure anti-islanding device definite purpose circuit breaker according to claim 1, is characterized in that described single chip control unit is connected with parameter adjustment unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110668.7U CN204029743U (en) | 2014-03-12 | 2014-03-12 | A kind of definite purpose circuit breaker of low pressure anti-islanding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420110668.7U CN204029743U (en) | 2014-03-12 | 2014-03-12 | A kind of definite purpose circuit breaker of low pressure anti-islanding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204029743U true CN204029743U (en) | 2014-12-17 |
Family
ID=52069576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420110668.7U Expired - Fee Related CN204029743U (en) | 2014-03-12 | 2014-03-12 | A kind of definite purpose circuit breaker of low pressure anti-islanding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204029743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091732A (en) * | 2014-03-12 | 2014-10-08 | 国家电网公司 | Special-purpose circuit breaker of low-voltage anti-islanding device |
| CN106130073A (en) * | 2016-08-09 | 2016-11-16 | 国电南瑞科技股份有限公司 | A kind of selection method based on distributed photovoltaic low pressure anti-islanding device |
-
2014
- 2014-03-12 CN CN201420110668.7U patent/CN204029743U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104091732A (en) * | 2014-03-12 | 2014-10-08 | 国家电网公司 | Special-purpose circuit breaker of low-voltage anti-islanding device |
| CN104091732B (en) * | 2014-03-12 | 2018-06-01 | 国家电网公司 | A kind of definite purpose circuit breaker of low pressure anti-islanding device |
| CN106130073A (en) * | 2016-08-09 | 2016-11-16 | 国电南瑞科技股份有限公司 | A kind of selection method based on distributed photovoltaic low pressure anti-islanding device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20190312 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |