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High voltage vacuum circuit breaker

A vacuum circuit breaker, high-voltage technology, applied in high-voltage air circuit breakers, high-voltage/high-current switches, circuits, etc., can solve the problems of slow response speed, damage to vacuum tube contacts, large closing inrush current, etc., and achieve the goal of reducing force Loss, reduce friction link, reduce the effect of overvoltage

Inactive Publication Date: 2012-04-25
NINGBO WEILONG PORT MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its mechanism has many transmission parts, large movement time dispersion, poor controllability of movement, slow response speed, and uncontrollable movement speed
So it is difficult to achieve precise control of mechanical motion
It is more difficult to achieve the purpose of synchronous closing, but in the power grid, the closing inrush current is large, which seriously damages the vacuum tube contacts
Greatly affect the life of the circuit breaker

Method used

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Examples

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0017] The invention provides a high-voltage vacuum circuit breaker, which includes opening and closing buttons 1, a buffer 2, an emergency opening device 3, a control mechanism 4, an operating mechanism 5, a remote opening and closing voltage dividing resistor 6, and a micro switch 7 , permanent magnet spindle 8, opening and closing sign 9, counter 10 and other components, see figure 1 As shown; wherein the operating mechanism 5 is a permanent magnet operating mechanism, which includes an upper support 51, an upper outgoing line 52, an insulating cylinder 53, a vacuum interrupter 54, a lower support 55, a lower outgoing line 56, an insulating Pull rod 57 (with contact spring inside), electromagnetic system 58 (with drive coil inside), overtravel adjustment nut 59, IGBT switch (not shown in the figure) used to drive insulating pull rod 57 to m...

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Abstract

The invention relates to a high voltage vacuum circuit breaker which comprises an operation mechanism and a control mechanism and is characterized in that the operation mechanism is a permanent magnetic operation mechanism; the permanent magnetic operation mechanism is used for driving to switch on and switch off a vacuum tube through a spindle crank arm; an ATM (Asynchronous Transfer Mode) singlechip controller is adopted in the control mechanism; external power grid synchronizing signal and remote switching-off and switching-on signal are respectively connected into the ATM singlechip controller; an output end of the ATM singlechip controller is connected with a switch of the permanent magnetic operation mechanism and is used for determining switching-on delay time, giving out a switching-on command, controlling the switch of the permanent magnetic operation mechanism and releasing electricity quantity of an energy storage capacitor in the permanent magnetic operation mechanism to a driving coil of the permanent magnetic operation mechanism so that a driving mechanism of the permanent magnetic operation mechanism drives the spindle crank arm to realize switching-on of the vacuum tube of the high voltage vacuum circuit breaker.

Description

technical field [0001] The invention relates to a high-voltage vacuum circuit breaker. Background technique [0002] The operating mechanism (electromagnetic or electric spring mechanism) of the traditional high-voltage vacuum circuit breaker is a mechanical system composed of a complex transmission mechanism. Its mechanism has many transmission parts, large movement time dispersion, poor movement controllability, slow response speed, and uncontrollable movement speed. Therefore it is difficult to achieve precise control of mechanical motion. It is more difficult to achieve the purpose of synchronous closing, but in the power grid, the closing inrush current is large, which seriously damages the vacuum tube contacts. Greatly affect the life of the circuit breaker. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a high-voltage vacuum circuit breaker capable of realizing precise closing of the high-voltage vacuu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/666
Inventor 邵明章乔显军
Owner NINGBO WEILONG PORT MASCH CO LTD
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