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Device for increasing switching arc voltage and control method thereof

A technology for switching arcs and arc voltages, applied in high-voltage/high-current switches, electrical switches, high-voltage air circuit breakers, etc. problems, to achieve the effect of simplifying the DC breaking topology, improving the reliability of equipment operation, and improving the commutation and breaking capacity.

Active Publication Date: 2021-02-26
NR ELECTRIC CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology can achieve fast breaking characteristics, but requires external magnetic coupling equipment, high equipment cost and low reliability
[0007] To sum up, the existing technical solutions of DC circuit breakers are complicated and costly, and it is difficult to promote and widely use them in a large area, which seriously restricts the promotion and application of flexible DC projects.

Method used

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  • Device for increasing switching arc voltage and control method thereof
  • Device for increasing switching arc voltage and control method thereof
  • Device for increasing switching arc voltage and control method thereof

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Embodiment Construction

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of this application.

[0032] It should be understood that the terms "first", "second" and the like in the claims, specification and drawings of the present application are used to distinguish different objects, rather than to describe a specific sequence. The terms "comprising" and "comprises" used in the specification and claims of this application indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude one or more other features, int...

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Abstract

The invention provides a device for increasing switching arc voltage and a control method thereof. The device comprises a vacuum arc-extinguishing chamber, permanent magnets, arc-blowing coils and anarc-blowing loop, a switch fracture is arranged in the vacuum arc-extinguishing chamber, the switch fracture comprises a moving contact and a static contact, and an arc voltage is generated when the moving contact and the static contact are separated; the permanent magnets are symmetrically arranged on two sides of the vacuum arc-extinguishing chamber; the arc blowing coils are symmetrically arranged on the two sides of the vacuum arc-extinguishing chamber, are arranged on the outer sides of the permanent magnets and are connected in series; and the arc blowing loop is connected with the arc blowing coils in parallel, and provides currents for the arc blowing coils during working so as to improve the arc voltage.

Description

technical field [0001] The present application relates to the technical field of high-voltage power electronics, in particular to a device for increasing switching arc voltage and a control method thereof. Background technique [0002] With the vigorous development of flexible DC technology, there is an urgent need for DC circuit breakers that can quickly shut down fault currents and have load input and output functions. [0003] However, since the DC current has no zero-crossing point, it is necessary to manually create a zero-crossing point to realize the breaking of the DC current. Therefore, the topology of the existing DC circuit breaker mainly includes the main flow branch, the transfer branch and the energy consumption branch. The main flow branch normally flows the rated current of the system, and is generally composed of a small number of switch fractures connected in series to reduce the steady-state loss of the DC circuit breaker. The transfer branch is connected...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/664H01H33/18
CPCH01H33/6641H01H33/182Y02E60/60
Inventor 杨兵孙超方太勋谢晔源陈羽王文杰石巍吕玮
Owner NR ELECTRIC CO LTD
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