Self-powered type direct-current quick circuit breaker

A fast circuit breaking, self-sourced technology, used in circuit breaker parts and other directions, can solve the problems of arc extinguishing grid burning, electromagnetic pollution, affecting the service life of circuit breakers, etc., to reduce arc energy, prolong service life, and avoid electromagnetic The effect of pollution

Inactive Publication Date: 2012-04-18
XUJI GRP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the circuit breakers for medium and low voltage DC transmission and distribution use arc extinguishing grids for arc extinguishing. Because the arc is very long and the energy is large, it often causes the arc extinguishing grids to burn out, and the molten metal is easy to stick to the dynamic and static contacts of the circuit breaker, affecting The service life of the circuit breaker; in addition, the DC circuit breaker using the arc chute is frequently maintained, and the existence of arcing will also affect the peripheral equipment of the circuit breaker, causing electromagnetic pollution

Method used

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  • Self-powered type direct-current quick circuit breaker
  • Self-powered type direct-current quick circuit breaker

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Embodiment Construction

[0011] Such as figure 1 As shown, the self-sourced DC fast circuit breaker of the present invention includes a circuit breaker switch body 5, and also includes a first instant on device 2 and a second instant on device 3, and the first instant on device 2 and the second instant on device The control signal input end of the instant on device 3 is used to connect with the control signal output end of the circuit breaker control unit; the arc voltage simulation device 1 is connected in parallel with the series branch composed of the first instant on device 2 in the circuit breaker The two ends of the switch body 5 are used to generate a simulated voltage opposite to the polarity of the arc voltage; the energy absorbing device 4 and the series branch composed of the second instantaneous connection device 3 are connected in parallel at both ends of the circuit breaker switch body 5 for use It is used to absorb the arc energy generated during the closing and opening process of the c...

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Abstract

The invention discloses a self-powered type direct-current quick circuit breaker which comprises a circuit breaker switch main body, a first transient connecting device, a second transient connecting device, an arc voltage suppressing device and an energy absorbing device, wherein a series branch circuit consisting of the arc voltage suppressing device and the first transient connecting device is connected at two ends of the circuit breaker switch main body in parallel and is used for generating a suppression voltage of which the polarity is opposite to that of the arc voltage; and a series branch circuit consisting of the energy absorbing device and the second transient connecting device is connected at two ends of the circuit breaker switch main body in parallel and is used for absorbing arc energy generated by the circuit breaker switch main body in the switching in / off process. According to the self-power type direct-current quick circuit breaker, the switching on / off passive operation of the circuit breaker switch main body can be realized; meanwhile, the roles in reducing the arc energy and extinguishing the arc can be played; the electromagnetic pollution is avoided; and the service life of the circuit breaker can be prolonged.

Description

technical field [0001] The invention relates to a power equipment circuit breaker, in particular to a self-sourced direct current fast circuit breaker suitable for medium and low voltage direct current transmission and distribution fields. Background technique [0002] At present, the circuit breakers for medium and low voltage DC transmission and distribution use arc extinguishing grids for arc extinguishing. Because the arc is very long and the energy is large, it often causes the arc extinguishing grids to burn out, and the molten metal is easy to stick to the dynamic and static contacts of the circuit breaker, affecting In addition, the DC circuit breaker using the arc chute is frequently maintained, and the existence of arcing will also affect the peripheral equipment of the circuit breaker and cause electromagnetic pollution. Contents of the invention [0003] The purpose of the present invention is to provide a self-sourced direct current fast circuit breaker, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H73/18
Inventor 于世新贾伟王帮田黄晔矿孙鹏程
Owner XUJI GRP
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