Dynamics of metallic particle contaminants in GIS with dielectric-coated electrodes

被引：67

作者：

Morcos, MM ^{[1
]}

Zhang, S

Srivastava, KD

Gubanski, SM

机构：

[1] Kansas State Univ, Manhattan, KS 66506 USA

[2] Univ British Columbia, Vancouver, BC V5Z 1M9, Canada

[3] Chalmers Univ Technol, S-41296 Gothenburg, Sweden

来源：

IEEE TRANSACTIONS ON POWER DELIVERY | 2000年 / 15卷 / 02期

基金：

美国国家科学基金会; 加拿大自然科学与工程研究理事会;

关键词：

compressed gas insulated systems; dielectric coated electrodes; particle movement;

D O I：

10.1109/61.852968

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Electrical insulation performance of compressed Gas Insulated Switchgear (GIS) and Gas Insulated Transmission Line (GITL) systems is adversely affected by metallic particle contaminants. Dielectric coatings applied to the inside surface of the outer enclosure of a coaxial GIS/GITL system improve the insulation performance in several ways. Coating has the effect of smoothing the electrode surface and reducing the prebreakdown current in the gas gap. Also, the electrostatic charge acquired by a particle is reduced and hence the range of its motion under an applied power frequency field is inhibited. The movement of such particles is complex and dependent on several parameters. In this paper the dynamics of wire particles in a coaxial system under AC voltage is studied when the inside surface of the outer enclosure of a coaxial GIS/GITL system is coated with a high resistance material, Suggestions for reducing the particle excursion in GIS/GITL systems are discussed.

引用

页码：455 / 460

页数：6

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