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Very high breaker in use for GIS

A circuit breaker, UHV technology, applied in the direction of high voltage air circuit breaker, high voltage/high current switch, circuit, etc., can solve the problems of increasing cost and high operating overvoltage of the power grid, reducing motion resistance, reducing operating overvoltage, etc. The effect of low production cost

Inactive Publication Date: 2007-05-09
王光顺
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, long-distance live lines with no load or small load will form a very high operating overvoltage in the power grid when they are opened and closed.
If these overvoltages are not limited by a special device, then excessive insulation measures must be taken in the UHV power grid, which will inevitably increase the cost significantly

Method used

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  • Very high breaker in use for GIS
  • Very high breaker in use for GIS
  • Very high breaker in use for GIS

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Embodiment Construction

[0028] As shown in FIG. 5 , a UHV circuit breaker for GIS according to the present invention includes a breaking contact device, opening and closing resistors 3 and an operating mechanism for manipulating the breaking contact device. The breaking contact device includes a moving contact and a static contact. The static contact includes a main contact 4, a resistance contact 5 and an arc-extinguishing contact 6. The moving contact includes an active contact 7 corresponding to the static contact, a resistance contact The moving contact 8 and the arc-extinguishing moving contact 9; the main contact 4 is electrically connected with the arc-extinguishing contact 6, the active contact 7, the resistance moving contact 8 and the arc-extinguishing moving contact 9 are electrically connected, and the three pairs of contacts Among them, the movement gap between the main contact 4 and the active contact 7 is the largest, and the movement gap between the resistance contact 5 and the resista...

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PUM

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Abstract

The invention relate to breaker, especially to super high-voltage circuit breaker in use for GIS. The disclosed breaker includes breaking contactor mechanism, and operating mechanism for switching on / off resistances, and controlling action of breaking contactor mechanism. Through pull rod and regulating lever, one set of operating mechanism can control two sets of breaking contactor mechanism since technique of adjusting compression spring for moving contactor is utilized. The invention possesses breaking function at double speed, reduces kinetic resistance of moving contactor, and quickens breaking speed. Stepped breaking technique adopted in the invention lowers over voltage of operation greatly, as well as increases rated capacity and breaking capacity greatly. The invention also reduces cost of equipment and difficulties for manufacturing the disclosed breaker.

Description

technical field [0001] The invention relates to a circuit breaker, in particular to a UHV circuit breaker for GIS. Background technique [0002] GIS is a sulfur hexafluoride gas insulated fully enclosed power distribution device. Its English full name is GAS-INSTULATED SWITCHGEAR, referred to as GIS. Circuit breakers are often used in power system equipment, and GIS systems are no exception. When used as a high-voltage or extra-high voltage circuit breaker, the faster the breaking speed, the shorter the time, the better, because when the moving contacts and static contacts of high-voltage electrical equipment are close to each other, it is easy to generate arcs, and the faster the breaking speed, the better the arcing. The shorter the time, the less damage to the equipment. In addition, a long-distance live line with no load or a small load will form a very high operating overvoltage in the power grid when it is opened and closed. If these overvoltages are not limited by...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/12H01H33/16H01H33/22H01H33/42H01H33/88
CPCH01H33/166H01H2033/028
Inventor 王光顺
Owner 王光顺
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