电工技术学报2017，Vol.32Issue(8)：1-9,9.
固体电介质真空沿面闪络研究进展
Research Progress on Vacuum Surface Flashover of Solid Dielectrics
摘要
Abstract
The issue of surface flashover limiting the electrical strength of composite insulating system in vacuum has received many attentions.This paper reviews the research progress of surface flashover in the recent years.Research results indicate that surface flashover performance of solid dielectrics in vacuum is influenced by many factors,such as the way of conditioning,surface and bulk properties of materials,the deposited charges in surface layer,electric field distribution of insulating system,etc.Mechanism implies that the essence of surface flashover is the charge transport behavior across gas-solid interface under high electric field,which involves charge trapping and de-trapping properties in dielectric surface layer,secondary electron emission properties,impact ionization of gas molecules and electron multiplication properties in gaseous phase (or desorbed gas).The development process and formation of surface flashover is a coupling effect of the above factors.Based on the above analysis,it is concluded that the improvement of surface flashover voltages can be achieved by changing the surface and bulk properties of materials as well as improving the electric field distribution of the whole insulation system.关键词
固体电介质/真空沿面闪络/电荷输运/倍增/耦合Key words
Solid dielectrics/vacuum surface flashover/charge transport/multiplication/coupling分类
信息技术与安全科学引用本文复制引用
李盛涛,聂永杰,闵道敏,潘绍明..固体电介质真空沿面闪络研究进展[J].电工技术学报,2017,32(8):1-9,9.基金项目
国家自然科学基金重点项目(51337008)、国家重点基础研究发展计划(973计划)(2015CB251003)、国家自然科学基金面上项目(11575140)和国家杰出青年科学基金项目(50625721)资助. （51337008）
