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a bypass switch

A bypass switch and circuit breaker technology, applied in the direction of electric switches, protection switches, circuits, etc., can solve the problems of closing operation reliability and short closing time, and achieve the effect of convenient use

Active Publication Date: 2016-05-25
EAST CHINA ELECTRIC POWER TEST & RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the prior art that the bypass switch cannot meet the requirements of extremely high reliability and extremely short closing time for the closing operation, the present invention provides a bypass switch with improved contact structure and operating mechanism, which has fast , reliable, small vibration and shock characteristics

Method used

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Embodiment Construction

[0025] In order to make the protection scope of the present invention clearer and easier to understand, the technical solutions of the present invention will be described below in conjunction with preferred embodiments of the present invention.

[0026] The invention provides a bypass switch, which includes a single-pole circuit breaker with the same three phases, each phase of the single-pole circuit breaker is connected to an independent operating mechanism, and each phase of the single-pole circuit breaker has a single-break structure. The single fracture is located in the arc extinguishing medium.

[0027] Each phase of the single-pole circuit breaker has an independent operating mechanism, then the bypass switch 10 can perform single-phase opening, closing and fast re-opening operations, and the three-phase There can be electrical linkage or mechanical linkage between them. According to the need to limit the short-circuit current, three-phase opening, closing and quick re...

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Abstract

The invention provides a bypass switch which comprises a single-pole circuit breaker with three identical phases. Each phase of the single-pole circuit breaker is connected with an independent operating mechanism, each phase of the single-pole circuit breaker is a single-break structure, and the single break is located in an arc extinguishing medium. The bypass switch can be in single-phase independent operation or three-phase linkage operation and has the advantage of easiness and convenience for operation.

Description

technical field [0001] The invention relates to the field of short-circuit current limiting devices for ultra-high voltage power grids, in particular to a bypass switch. Background technique [0002] The quick bypass switch is a special circuit breaker. figure 1 It is a short-circuit current limiting device for ultra-high voltage power grid, please refer to figure 1 As shown, the short-circuit current limiting device of the ultra-high voltage grid includes: a bypass switch 10 , a spark gap GAP, a transistor 20 , a capacitor bank 30 and a reactor 40 . The bypass switch 10 is in an open state under normal conditions, and the capacitor bank 30 and the reactor 40 are in a series resonance state; when a short circuit occurs, the bypass switch 10 can be quickly closed to bypass the capacitor bank 30 to The series reactor 40 limits the short circuit current. [0003] However, most of the existing bypass switches do not consider the special requirements for fast closing when limi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01H79/00H01H71/10H01H1/06H01H1/50
Inventor 高凯傅晨钊
Owner EAST CHINA ELECTRIC POWER TEST & RES INST