Characteristics of Surface Discharge on the Interface of Solid Insulation and Liquid Nitrogen in Superconducting Applications

doi:10.11930/j.issn.1004-9649.201604094

Abstract

Abstract: Advances in superconducting transmission technology require better insulation materials. The breakdown in composite insulation system mostly occurs on the interface between solid insulation material and liquid nitrogen. Under liquid nitrogen temperature, insulation material discharge behaviors differ a lot from those in room temperature. An electrode system is designed to generate severe non-uniform electric field on surface of solid dielectrics and liquid Nitrogen. The discharge behavior of three different solid dielectrics are tested and analyzed. The results can be used in real engineering applications.

Key words: superconducting equipment, solid insulation material, liquid nitrogen, surface discharge, discharge characteristics

CLC Number:

TM855

ZHENG Zhong, YU Zhicheng, DU He, HUANG Xiaohua. Characteristics of Surface Discharge on the Interface of Solid Insulation and Liquid Nitrogen in Superconducting Applications[J]. Electric Power, 2018, 51(3): 69-73.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.201604094

https://www.electricpower.com.cn/EN/Y2018/V51/I3/69

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