CN204424884U - Can recovery-type big current Fault Current Limiting Device - Google Patents
Can recovery-type big current Fault Current Limiting Device Download PDFInfo
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- CN204424884U CN204424884U CN201520132966.0U CN201520132966U CN204424884U CN 204424884 U CN204424884 U CN 204424884U CN 201520132966 U CN201520132966 U CN 201520132966U CN 204424884 U CN204424884 U CN 204424884U
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Abstract
The utility model discloses can recovery-type big current Fault Current Limiting Device, and comprise big current high-speed controller, vacuum circuit-breaker and reactor, described big current high-speed controller is connected with vacuum circuit-breaker place circuit, described reactor and vacuum circuit-breaker in parallel.Once in circuit short dot cut after, the electric current in circuit will return to load current value, after big current high-speed controller detects this change, will send the switching signal of vacuum circuit-breaker, and vacuum circuit-breaker is closed, thus by reactor short circuit; And can repeat to cut-off and close due to vacuum circuit-breaker, can hot line job, the process of fixing a breakdown does not want system blackout, effectively prevent the loss having a power failure and cause.
Description
Technical field
The utility model relates to power equipment, and particularly relating to can recovery-type big current Fault Current Limiting Device.
Background technology
Short trouble is a kind of system failure that electric power system probability of occurrence is higher.When there is short trouble in electric power system, big current high-speed controller calculates the size of short circuit current in 0.2ms, if meet the condition of setting value, send actuating signal, current-carrying pontic is disconnected, thus uses short circuit current to enter current limiting reactor, utilize current limiting reactor to the restriction of short circuit current, thus short circuit current is limited in less amplitude, the circuit breaker in the high-tension switch cabinet making distance fault point nearest is to excise fault point.
But the while that the method row being out of order, need whole electric power system to carry out having a power failure once when equipment recovers, large-scale power system has a power failure at every turn, larger loss can be caused to its relevant system.
Summary of the invention
The technical problems to be solved in the utility model is to provide can recovery-type big current Fault Current Limiting Device, can ensure that whole system not have a power failure, avoid electric power system to have a power failure and cause damage while eliminating power failure.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: can recovery-type big current Fault Current Limiting Device, comprise big current high-speed controller, vacuum circuit-breaker and reactor, described big current high-speed controller is connected with vacuum circuit-breaker place circuit, described reactor and vacuum circuit-breaker parallel connection.Once in circuit short dot cut after, the electric current in circuit will return to load current value, after big current high-speed controller detects this change, will send the switching signal of vacuum circuit-breaker, and vacuum circuit-breaker is closed, thus by reactor short circuit; And can repeat to cut-off and close due to vacuum circuit-breaker, can hot line job, the process of fixing a breakdown does not want system blackout, effectively prevent the loss having a power failure and cause.
The technical solution adopted in the utility model, its beneficial effect is: when short trouble appears in electric power system, big current high-speed controller sends actuating signal, make vacuum circuit-breaker separating brake, short circuit current is limited in less amplitude, circuit breaker in the high-tension switch cabinet making distance fault point nearest, to excise fault point, because the impedance of current limiting reactor is comparatively large, connects for a long time and can cause a large amount of electric energy losses and voltage drop in the line; And both vacuum circuit-breaker and current limiting reactor are in parallel, because the cold-state resistance of vacuum circuit-breaker is more much smaller than current limiting reactor, so normal time, the electric current in circuit will pass through from vacuum circuit-breaker, thus avoids electric energy loss and the voltage drop of current limiting reactor; Due to the feature of the zero passage ability current interruption of short circuit current in vacuum circuit-breaker, this is about 10ms with regard to the operate time causing big current Fault Current Limiting Device, and can repeat to cut-off and close due to vacuum circuit-breaker, can hot line job, the process of fixing a breakdown does not want system blackout, effectively prevent the loss having a power failure and cause.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described further:
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
Embodiment
The structural representation of a kind of embodiment of the utility model as shown in Figure 1, can recovery-type big current Fault Current Limiting Device, comprise big current high-speed controller 1, vacuum circuit-breaker 2 and reactor 3, described big current high-speed controller is connected with vacuum circuit-breaker place circuit, described reactor and vacuum circuit-breaker parallel connection.
When there is short trouble in electric power system, big current high-speed controller calculates the size of short circuit current in 0.2ms, if meet the condition of setting value, send actuating signal, make vacuum circuit-breaker separating brake, thus use short circuit current to enter current limiting reactor, utilize current limiting reactor to the restriction of short circuit current, thus short circuit current is limited in less amplitude, the circuit breaker in the high-tension switch cabinet making distance fault point nearest is to excise fault point.Once in circuit short dot cut after, the electric current in circuit will return to load current value, after big current high-speed controller detects this change, will send the switching signal of vacuum circuit-breaker, and vacuum circuit-breaker is closed, thus by reactor short circuit.
Because the impedance of current limiting reactor is comparatively large, connects for a long time and can cause a large amount of electric energy losses and voltage drop in the line; Both vacuum circuit-breaker and current limiting reactor are in parallel, because the cold-state resistance of vacuum circuit-breaker is more much smaller than current limiting reactor, so normal time, the electric current in circuit will pass through from vacuum circuit-breaker, thus obviates electric energy loss and the voltage drop of current limiting reactor.
Due to the feature of the zero passage ability current interruption of short circuit current in vacuum circuit-breaker, this is about 10ms with regard to the operate time causing big current Fault Current Limiting Device, and can repeat to cut-off and close due to vacuum circuit-breaker, can hot line job, the process of fixing a breakdown does not want system blackout, effectively prevent the loss having a power failure and cause.
Except above preferred embodiment, the utility model also has other execution mode, those skilled in the art can make various change and distortion according to the utility model, only otherwise depart from spirit of the present utility model, all should belong to the scope that the utility model claims define.
Claims (1)
1. can recovery-type big current Fault Current Limiting Device, it is characterized in that: comprise big current high-speed controller (1), vacuum circuit-breaker (2) and reactor (3), described big current high-speed controller is connected with vacuum circuit-breaker place circuit, described reactor and vacuum circuit-breaker parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132966.0U CN204424884U (en) | 2015-03-09 | 2015-03-09 | Can recovery-type big current Fault Current Limiting Device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520132966.0U CN204424884U (en) | 2015-03-09 | 2015-03-09 | Can recovery-type big current Fault Current Limiting Device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204424884U true CN204424884U (en) | 2015-06-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520132966.0U Active CN204424884U (en) | 2015-03-09 | 2015-03-09 | Can recovery-type big current Fault Current Limiting Device |
Country Status (1)
| Country | Link |
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| CN (1) | CN204424884U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448551A (en) * | 2018-03-23 | 2018-08-24 | 西安交通大学 | A kind of exchange current limiter and its current-limiting method |
| CN109213032A (en) * | 2018-08-17 | 2019-01-15 | 湖北三好电子有限公司 | Equipment monitoring energy-saving control system |
-
2015
- 2015-03-09 CN CN201520132966.0U patent/CN204424884U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448551A (en) * | 2018-03-23 | 2018-08-24 | 西安交通大学 | A kind of exchange current limiter and its current-limiting method |
| CN108448551B (en) * | 2018-03-23 | 2020-01-14 | 西安交通大学 | Alternating current limiter and current limiting method thereof |
| CN109213032A (en) * | 2018-08-17 | 2019-01-15 | 湖北三好电子有限公司 | Equipment monitoring energy-saving control system |
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