Self-breakdown properties and optimization of insulator envelope for MV gas switch under pulsed voltage

yin jia-hui; sun feng-ju; qiu ai-ci; guo jian-ming; liu zhi-gang; zhang zhong; zeng jiang-tao

Volume 20 Issue 07

Jul. 2008

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Article Navigation > High Power Laser and Particle Beams > 2008 > 20(07): 0-

wang feng, peng xiaoshi, liu shenye, et al. Data processing method of imaging velocity interferometer system for any reflector[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

yin jia-hui, sun feng-ju, qiu ai-ci, et al. Self-breakdown properties and optimization of insulator envelope for MV gas switch under pulsed voltage[J]. High Power Laser and Particle Beams, 2008, 20.

wang feng, peng xiaoshi, liu shenye, et al. Data processing method of imaging velocity interferometer system for any reflector[J]. High Power Laser and Particle Beams, 2009, 21.

Citation:

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Self-breakdown properties and optimization of insulator envelope for MV gas switch under pulsed voltage

1.
Northwest Institute of Nuclear Technology,P.O.Box 69-10,Xi’an 710024,China

Publish Date: 2008-07-15

Abstract

Abstract

Two bracing type MV gas switches are designed, the cantilever switch has a cantilevered HV electrode sealed in the brace insulating cylinder, the section-brace switch has an HV electrode spreading out of the brace insulating cylinder. Through self-breakdown experiment and electrostatic field simulation, the optimization of insulator envelop is discussed. The result indicates that the section-brace switch is safer and stabler than the cantilever switch. The reason of puncture in insulator cylinder of cantilever switch is that the stream formed in switch is accelerated by the electric field and then strikes the surface of outer cylinder. Bradley formula with field enhancement factor is given and it accords well with experimental data.
- mv gas switch,
- insulation bracing structure,
- insulation damage,
- breakdown electric-field strength

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