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Quick control mechanism of ultrahigh pressure vacuum circuit breaker and control method thereof

A technology of vacuum circuit breaker and operating mechanism, which is used in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., to achieve the effects of increasing magnetic density, improving output power, and avoiding magnetic leakage

Inactive Publication Date: 2011-03-16
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the opening and closing speed of the operating mechanism has become a problem that limits the development of ultra-high voltage vacuum circuit breakers.

Method used

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  • Quick control mechanism of ultrahigh pressure vacuum circuit breaker and control method thereof
  • Quick control mechanism of ultrahigh pressure vacuum circuit breaker and control method thereof
  • Quick control mechanism of ultrahigh pressure vacuum circuit breaker and control method thereof

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Embodiment Construction

[0019] In order to make the content of the present invention more obvious and understandable, further description will be made below in conjunction with the accompanying drawings and specific embodiments.

[0020] The specific implementation of the quick operating mechanism for an ultra-high voltage vacuum circuit breaker combines figure 1 As shown, it includes an eddy current repulsion mechanism I and a permanent magnet operating mechanism II. The permanent magnet operating mechanism II includes an outer yoke 7 and a moving iron core 5. The upper and lower ends of the outer yoke are respectively equipped with closing coils outside the moving iron core. And the opening coil 9, a permanent magnet 6 is installed between the opening coil 9 and the closing coil 4, and in the permanent magnet 6 operating mechanism II, a pole shoe 8 is provided inside the permanent magnet 6. A lower moving guide rod 11 is installed in the moving iron core 5, and the eddy current repulsion mechanism ...

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Abstract

The invention discloses a quick control mechanism of an ultrahigh pressure vacuum circuit breaker and a control method thereof. The control mechanism comprises a permanent magnet control mechanism and an eddy repulsion mechanism, wherein the permanent magnet control mechanism is in an unsymmetrical structure mode, and can better cooperate with the counter-force characteristic requirement of the ultrahigh pressure vacuum circuit breaker; the eddy repulsion mechanism can generate instantaneous repulsion and quicken the opening / closing operation of the ultrahigh pressure vacuum circuit breaker. The control method is as follows: during closing, a closing coil is electrified with forward current, and an opening coil is electrified with reverse current; meanwhile, pulse current is applied on a closing eddy current coil; during opening, the opening coil is electrified with forward current, the closing coil is electrified with reverse current; and meanwhile, the pulse current is applied on anopening eddy current coil. In the invention, the unsymmetrical permanent magnet control mechanism and the eddy repulsion mechanism are adopted to realize the quick action of the mechanism and satisfythe repulsion characteristic requirement of the ultrahigh pressure vacuum circuit breaker.

Description

technical field [0001] The invention belongs to the technical field of power supply and distribution, in particular to a fast operating mechanism of an ultra-high voltage vacuum circuit breaker and a control method thereof for controlling the opening and closing operations of the ultra-high voltage vacuum circuit breaker. Background technique [0002] With the rapid development of industrialization and urbanization in our country, the demand for electricity will continue to grow in a long period of time, and the task of power grid development is heavy. It is particularly urgent to develop a strong smart grid, and the smart grid is also moving towards ultra-high voltage and ultra-high voltage levels. Therefore, the research and development of matching high-performance and high-reliability circuit breakers can provide a strong technical guarantee for the safety and reliability of smart grid power supply. [0003] The two most critical factors in the development of ultra-high v...

Claims

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Application Information

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IPC IPC(8): H01H33/666
Inventor 房淑华林鹤云汪先兵金平郭立家陈祥
Owner SOUTHEAST UNIV
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