CN209217702U - Breaker fail protection module in arc light protective device - Google Patents
Breaker fail protection module in arc light protective device Download PDFInfo
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- CN209217702U CN209217702U CN201821865029.6U CN201821865029U CN209217702U CN 209217702 U CN209217702 U CN 209217702U CN 201821865029 U CN201821865029 U CN 201821865029U CN 209217702 U CN209217702 U CN 209217702U
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- arc light
- protective device
- microprocessor
- protection
- arc
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Abstract
The utility model relates to the breaker fail protection modules in a kind of arc light protective device.The purpose of the utility model is to provide the breaker fail protection modules in a kind of arc light protective device, to improve the diversity, stability and reliability of arc light protecting device.The technical solution of the utility model is: a kind of breaker fail protection module in arc light protective device characterized by comprising microprocessor；Current acquisition module is connect with the microprocessor circuit, for acquiring the phase current of each phase bus；Intake inputs acquisition module, connect with the microprocessor circuit, the arc protection action signal that the trip position signal and arc light protective device for acquiring respective circuit breakers issue；Tripping alarm output module is connect with the microprocessor circuit.The utility model is suitable for relay protection field.
Description
Technical field
The utility model relates to the breaker fail protection modules in a kind of arc light protective device.Suitable for relay protection
Field.
Background technique
Breaker fail protection refers to that the relay protection movement of failure electrical equipment issues trip signal and breaker tripping
When, the differentiation to breaker failure, energy are constituted using the protection act information of faulty equipment and the current information of tripping breaker
It is enough that other related breakers in same plant stand are cut off with the shorter time limit, so that scope of power outage is limited in minimum, to guarantee whole
Thing is disintegrated in the stable operation of a power grid, the collapse for avoiding the serious scaling loss and power grid of the fault elements such as generator, transformer
Therefore.
" relay protection and automatic safety device technical regulation " regulation: in 220kV and the power grid of above, and
The pith of 110kV power grid should all install breaker fail protection.In China in 35kV and following low voltage electric network, generally not
Bus protection is configured, more without breaker fail protection.
In the occasions such as arc light protective device is substation, power plant, industrial enterprise, low-voltage bus bar quick protection is provided.
When arc short-circuit occurs, can be quickly positioned by the arc short-circuit of arc photosensor overlay area, arc light protection system is fast
Quick-action is made, disengagement failure electric current, reduces damage and personal injury of the arclight to equipment to greatest extent.Arc light protection system is adopted
With the double criterion principles of arc light detecting and current detecting, have the characteristics that protection act speed fastly, high reliablity.
Arc protection probe can be separately mounted to bus-bar room, breaker chamber, cable vault, to detect that position occurs for arc light
The difference set, and wavy trajectory is different, bus-bar room and breaker chamber generate arc light, jump electric power incoming line；Cable vault generates arc light, jumps
This feeder line；If the faulty generation arc light in cable vault, the tripping of this feeder breaker cannot cut out failure, can be to bus and change
Depressor generates impact or burns, and brings inevitable loss.
Summary of the invention
Technical problem to be solved by the utility model is: in view of the above problems, providing a kind of electric arc protection dress
Breaker fail protection module in setting, to improve the diversity, stability and reliability of arc light protecting device.
The technical scheme adopted by the utility model is the breaker fail protection mould in a kind of arc light protective device
Block characterized by comprising
Microprocessor；
Current acquisition module is connect with the microprocessor circuit, for acquiring the phase current of each phase bus；
Intake inputs acquisition module, connect with the microprocessor circuit, for acquiring the tripping position of respective circuit breakers
The arc protection action signal that confidence number and arc light protective device issue；
Tripping alarm output module is connect with the microprocessor circuit；
Each phase current signal that the microprocessor is acquired according to current acquisition module inputs acquisition module by intake
The trip position signal and arc protection action signal of input carry out failure protection judgement, and are meeting failure protection operation condition
Trip signal is sent to circuit breakers by tripping alarm output module afterwards.
The beneficial effects of the utility model are: being given after the utility model increases failure protection in arc light protecting device
Protective device has multi-selection, can provide higher stability and reliability.The utility model can meet different power trains
The different demands of system, while the indoor arc fault of cable of switchgear is handled in the shortest time, it ensures to the greatest extent
Middle-low voltage switch cabinet safety.
Detailed description of the invention
Fig. 1 is the structure principle chart of embodiment.
Fig. 2 is the working principle diagram of embodiment.
Specific embodiment
As shown in Figure 1, the present embodiment is the breaker fail protection module in a kind of arc light protective device, including micro- place
Device 1 is managed, and is exported with the current acquisition module 2 of 1 circuit connection of microprocessor, intake input acquisition module 3 and tripping alarm
Module 4, wherein the phase current for acquiring each phase bus；Intake input acquisition module 3 is used to acquire the jump of respective circuit breakers
The arc protection action signal that gate position signal and arc light protective device issue.
Microprocessor 1 is acquired according to current acquisition module 2 in the present embodiment each phase current signal passes through intake and inputs
The trip position signal and arc protection action signal that acquisition module 2 inputs carry out failure protection judgement, and protect meeting failure
It protects after operation condition and trip signal is sent to circuit breakers by tripping alarm output module 4.
As shown in Fig. 2, the principle of the progress of microprocessor 1 failure judgement is as follows in this example: receiving arc light in microprocessor 1
After protection signal, each phase current is still greater than setting valve and/or trip position signal shows what trip position was failure to actuate, judgement
For breaker failure.
Certainly, above description is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
The those of ordinary skill in art field, in the scope of the utility model, variation, addition or the replacement made all should belong to this reality
With novel protection scope.
Claims (1)
1. the breaker fail protection module in a kind of arc light protective device characterized by comprising
Microprocessor (1)；
Current acquisition module (2), and the microprocessor (1) circuit connection, for acquiring the phase current of each phase bus；
Intake inputs acquisition module (3), and the microprocessor (1) circuit connection, for acquiring the tripping of respective circuit breakers
The arc protection action signal that position signal and arc light protective device issue；
Tripping alarm output module (4), with the microprocessor (1) circuit connection；
Each phase current signal that the microprocessor (1) acquires according to current acquisition module (2) passes through intake input acquisition mould
The trip position signal and arc protection action signal of block (3) input carry out failure protection judgement, and dynamic meeting failure protection
Pass through tripping alarm output module (4) to circuit breakers transmission trip signal after making condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821865029.6U CN209217702U (en) | 2018-11-13 | 2018-11-13 | Breaker fail protection module in arc light protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821865029.6U CN209217702U (en) | 2018-11-13 | 2018-11-13 | Breaker fail protection module in arc light protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209217702U true CN209217702U (en) | 2019-08-06 |
Family
ID=67459411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821865029.6U Active CN209217702U (en) | 2018-11-13 | 2018-11-13 | Breaker fail protection module in arc light protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209217702U (en) |
-
2018
- 2018-11-13 CN CN201821865029.6U patent/CN209217702U/en active Active
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