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Quick high-voltage switch

A high-voltage switch, fast technology, used in high-voltage/high-current switches, electrical switches, high-voltage air circuit breakers, etc., can solve the problem of time can not meet the rapid opening and closing, and achieve low cost, flexible configuration, and fast closing speed. Effect

Inactive Publication Date: 2016-04-06
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the opening and closing time of traditional switches is generally tens of milliseconds, which cannot meet the requirements of fast opening and closing in terms of time.

Method used

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  • Quick high-voltage switch

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Embodiment Construction

[0016] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0017] Such as figure 1 As shown, the fast high-voltage switch includes 3 sets of vacuum interrupters (1), 3 sets of electromagnetic repulsion operating mechanisms (2) and 1 set of energy storage and trigger unit (3). The 3 groups of vacuum interrupters are connected in series to each other to form a multi-fracture opening distance, which plays a role of high-voltage insulation. The number of vacuum interrupters can be increased or decreased according to the voltage level of the actual application, and the configuration can be flexible. The moving contacts (1-b) of each group of vacuum interrupters are connected to the upper end of the insulating rod (2-a) of a group of electromagnetic repulsion operating mechanisms (2), and the number of electromagnetic repulsion operating mechanisms is the same as the number of vacuum interrupters . The...

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Abstract

The invention proposes a quick high-voltage switch. The switch comprises N vacuum arc-extinguishing chambers, N electromagnetic repulsion operation mechanisms and one energy storage and trigger unit, wherein the N vacuum arc-extinguishing chambers are connected in series; each vacuum arc-extinguishing chamber is connected with one electromagnetic repulsion operation mechanism; and the N electromagnetic repulsion operation mechanisms are controlled to be switched on or off by the energy storage and trigger unit. According to the quick high-voltage switch, multiple fractures are connected in series, so that the opening travel of the insulated fractures is increased and a higher voltage can be withstood; and only one energy storage and trigger unit is used for control, so that the switch-on and switch-off synchronicity is high and the integral switch-on and switch-off time is unchanged.

Description

technical field [0001] The invention belongs to the field of high-voltage electric appliances, and belongs to a fast high-voltage switch that can be used in medium and high-voltage fast opening and closing applications. Background technique [0002] In order to improve the power transmission and distribution capacity, the power system has been developing towards high voltage. When a short-circuit fault occurs in the power system, the fault current rises rapidly. If the fault is not disconnected in time, it will cause harm to the system, equipment and personnel. In order to reduce the damage caused by short-circuit faults to the power grid, measures such as fast opening and closing switches can be used to quickly cut off the fault current, or fast high-voltage switches can be used to put current-limiting reactors in the short-circuit line to suppress the fault current. Because the short-circuit current generally rises to the maximum value within 10ms of the first half cycle, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666
CPCH01H33/666
Inventor 黄晓明陆翌裘鹏华文王松杨涛杨勇谢晔源杨浩吕玮杨兵王宇石巍刘彬
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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