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Vacuum switch for medium-voltage switching capacitor bank

A technology for switching capacitors and vacuum switches, applied in the field of medium-voltage power, can solve the problems of low reliability, easy re-ignition, imperfect structure or process, etc., and achieves high reliability, improved safety, and high withstand voltage level. Effect

Active Publication Date: 2013-09-25
厦门顾德益电气股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the related art, various complex operating overvoltages will be generated in the process of switching the capacitor bank by the vacuum switch. The existing vacuum switch for switching the capacitor bank has only one arc extinguishing chamber for each phase, and its structure or process is not perfect. , prone to reignition; low reliability

Method used

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  • Vacuum switch for medium-voltage switching capacitor bank
  • Vacuum switch for medium-voltage switching capacitor bank

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Embodiment Construction

[0011] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

[0012] A vacuum switch for medium voltage switching capacitor bank, such as figure 1 As shown, it includes: a first arc extinguishing chamber 9 , a second arc extinguishing chamber 4 and an intermediate conductive member 3 ;

[0013] Among them, the vacuum switch for switching capacitor banks adopts a double interrupter series structure, so that the vacuum fracture is increased from the original one to two, and the total vacuum gap is increased, so that the re-ignition phenomenon is significantly reduced or eliminated. Longer service life than SF6 switch, especially suitable for occasions with frequent operation, and low life-cycle cost. Therefore, in the double arc extinguishing chamber vacuum switch of the above-mentioned embodiment of the present invention, by setting the first arc extinguishing chamber 9 and t...

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Abstract

The invention relates to the field of medium-voltage power, in particular to a vacuum switch for a medium-voltage switching capacitor bank. The vacuum switch for the medium-voltage switching capacitor bank comprises a first arc-control chamber, a second arc-control chamber and a middle conductive piece, wherein the bottom end of the first arc-control chamber is connected in series with the top end of the second arc-control chamber through the middle conductive piece. The vacuum switch with double arc-control chambers is higher in voltage withstand level and can bear impact of switching overvoltage after capacitor bank switching. Commonly, in a 35kV power system, the reigniting probability of a vacuum fracture is about 2.5%, theoretically, the reigniting probability of the vacuum switch for the medium-voltage switching capacitor bank can be reduced to 0.0625%, reliability is high, and therefore safety of a medium-voltage power capacitance compensation device and system can be improved greatly.

Description

technical field [0001] The invention relates to the field of medium-voltage electric power, in particular to a vacuum switch for medium-voltage switching capacitor banks. Background technique [0002] When reactive power compensation is performed in medium voltage power systems, vacuum switches are often used to switch capacitor banks. [0003] In the related technology, various complex operating overvoltages will be generated in the process of switching the capacitor bank by the vacuum switch. The existing vacuum switch for switching the capacitor bank has only one arc extinguishing chamber for each phase, and its structure or process is not perfect. , prone to re-ignition phenomenon; low reliability. Contents of the invention [0004] The object of the present invention is to provide a vacuum switch for medium-voltage switching capacitor bank to solve the above problems. [0005] In an embodiment of the present invention, a vacuum switch for a medium-voltage switching ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H33/66H01H33/664
Inventor 陈波
Owner 厦门顾德益电气股份有限公司
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