Medium-voltage phase selection closing switch

A technology of switches and phase selection controllers, which is applied in high-voltage/high-current switches, electric switches, high-voltage air circuit breakers, etc., which can solve the problems of numerous intermediate control devices, short service life, and bulky volume, and achieve perfect power and control The effect of convenience and simple action process

Inactive Publication Date: 2019-08-16
SHANGHAI POWER TRANSMISSION & DISTRIBUTION TESTING CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the high-voltage and high-current phase-selection closing switches used in China use foreign products. Foreign products adopt pneumatic control methods. Because they do not use permanent magnet mechanism technology, they are bulky, complicated to control, and extremely expensive. high, short service life

Method used

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  • Medium-voltage phase selection closing switch
  • Medium-voltage phase selection closing switch

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Embodiment Construction

[0026] The present invention will be further explained below in conjunction with specific embodiments.

[0027] Such as figure 1 , 2 As shown, a medium voltage phase selection and closing switch includes: an intelligent phase selection controller 7 and a medium voltage phase selection and closing switch, and the intelligent phase selection controller 7 and the medium voltage phase selection and closing switch are connected by a cable.

[0028] Such as figure 2 As shown, the medium voltage phase-selective closing switch is composed of a frame 6, a vacuum interrupter 1, an upper insulating structure 2, an insulating pull rod 3, a lower insulating structure 4, and a permanent magnet operating mechanism 5.

[0029] Each vacuum interrupter 1 is driven by a separate permanent magnet operating mechanism 5, and corresponds to an independent permanent magnet operating mechanism drive circuit in the intelligent phase selection controller 7;

[0030] The periphery of the vacuum interrupter 1 is...

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Abstract

The invention discloses a medium-voltage phase selection closing switch, which comprises an intelligent phase selection controller and a medium-voltage phase selection closing switch. The intelligentphase selection controller and the medium-voltage phase selection closing switch are connected through a cable. The medium-voltage phase selection closing switch is formed by a frame, vacuum arc-extinguishing chambers, upper insulation structural members, insulation pull rods, lower insulation structural members and permanent magnet operating mechanisms. Each vacuum arc-extinguishing chamber is driven by the separate permanent magnet operating mechanism, and is corresponding to one independent permanent magnet operating mechanism driving loop in the intelligent phase selection controller. Eachvacuum arc-extinguishing chamber is driven by the separate permanent magnet operating mechanism, and is corresponding to one independent permanent magnet operating mechanism driving loop in the intelligent phase selection controller; and the medium-voltage phase selection closing switch is easy to operate, long in life and high in action reliability.

Description

Technical field [0001] The invention belongs to the technical field of intelligent phase selection and closing switches, and more specifically, relates to a medium voltage phase selection and closing switch capable of realizing test currents that meet standard requirements. Background technique [0002] With the development and popularization of power electronic device applications, people have developed thyristor switches (solid state relays) with thyristor as the core. The principle is to pass the voltage and current zero-crossing detection control to ensure that the phase selection is input near the voltage zero zone to generate the maximum closing peak current, which functionally meets the most basic requirements of the phase selection switch. However, electronic devices have fatal weaknesses in application: their own electrical losses are large, and they need to be dissipated to avoid thermal breakdown of the PN junction. In order to cool down, they need to use a large area ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666H01H33/662
CPCH01H33/66207H01H33/666
Inventor 罗时聪郭丽萍王世亮樊楚夫
Owner SHANGHAI POWER TRANSMISSION & DISTRIBUTION TESTING CENT
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