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Mixed type circuit breaker with bidirectional disconnecting function and on-off method therefor

A circuit breaker and hybrid technology, which is applied in the field of hybrid circuit breakers and their breaking, can solve the problems of uncertain flow of current and energy in the DC grid

Inactive Publication Date: 2017-08-22
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This feature causes the flow of current and energy in the DC grid to be uncertain.

Method used

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  • Mixed type circuit breaker with bidirectional disconnecting function and on-off method therefor
  • Mixed type circuit breaker with bidirectional disconnecting function and on-off method therefor
  • Mixed type circuit breaker with bidirectional disconnecting function and on-off method therefor

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Embodiment Construction

[0048] Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Although specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and is not limited to the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art.

[0049] It should be noted that certain terms are used in the specification and claims to refer to specific components. Those skilled in the art should understand that they may use different terms to refer to the same component. The specification and claims do not use differences in nouns as a way of distinguishing components, but use differences in functions of components as a criterion for distinguishing. "Includes" or "comprises" mentioned throughout the spe...

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Abstract

The invention a mixed type circuit breaker with a bidirectional disconnecting function and an on-off method therefor. The circuit breaker comprises a main current loop, a current transfer branch, an overvoltage limiting branch, an online monitoring system, a control system, a wire inlet end C1 and a wire outlet end C2; the main current loop, the current transfer branch and the overvoltage limiting branch are connected in parallel; and the negative electrode of a semi-control type power semiconductor device VD1 and the positive electrode of a semi-control type power semiconductor device VD3 are connected with one end of a high-speed mechanical switch fracture while the negative electrode of a semi-control type power semiconductor device VD2 and the positive electrode of a semi-control type power semiconductor device VD4 are connected with the other end of the high-speed mechanical switch fracture. The mixed type circuit breaker has the bidirectional conduction and disconnecting capability and can be applied to a bidirectional flow-through direct current power supply system.

Description

technical field [0001] The invention relates to a bidirectional breaking hybrid circuit breaker and a breaking method thereof, in particular to a circuit breaker which realizes the function of shutting off current in different directions by changing the timing sequence of a semi-controlled power semiconductor device triggering a transfer branch. Background technique [0002] The integrated DC circuit breaker has the advantages of strong current capacity, fast turn-off speed, and small on-state loss. It has been a research hotspot in the industry in recent years. With the further development of the DC power supply system, most of the loads in the new DC system have the characteristics of dual properties of load and power supply. This feature causes the flow direction of current and energy in the DC grid to be uncertain. This feature puts forward the requirement of two-way breaking for the DC circuit breaker. The DC circuit breaker working in this kind of DC system is not li...

Claims

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Application Information

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IPC IPC(8): H02H3/087H02H9/04
CPCH02H3/087H02H9/04
Inventor 郭安祥胡杨苏扬易强郭佳豪张含天刘子瑞杨飞
Owner STATE GRID CORP OF CHINA
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