电工技术学报2020，Vol.35Issue(14)：3147-3151,5.DOI:10.19595/j.cnki.1000-6753.tces.200455
基于X射线短时照射的高压直流GIS/GIL绝缘子表面电荷主动消散方法
Active Charge Dissipation Method for Surface Charge on the Surface of DC GIS/GIL Insulator Based on Short-Time X-Ray Irradiation
摘要
Abstract
DC gas insulated switchgear/gas insulated transmission line (GIS/GIL) insulator will accumulate a large amount of charge on its surface during long-term operation, which can easily cause abnormal surface flashover. In recent years, many researchers have carried out a lot of fruitful work. The mechanisms of charge accumulation and dissipation on insulator surface have been deeply revealed. However, the challenge to efficiently dissipate surface charges in GIS/GIL when keep the tank closed is still unsolved. An active surface charge dissipation method based on short-time X-rays irradiation has been proposed in this paper. It has found by experiment that 30s X-ray irradiation can dissipate nearly all surface charges when the gas medium is air. The dissipation mechanism of surface charges on insulator has been studied. Conduction of charges through gas channel and escape of trapped surface charges can be promoted by X-ray irradiation, so that the dissipation rate will be greatly increased. The results provide a new idea for realizing rapid surface charge dissipation on the surface of insulator in GIS/GIL without opening the tanks, which has great significance for the engineering application of DC GIS/GIL.关键词
直流GIS/GIL/绝缘子/表面电荷/X射线/主动消散Key words
DC gas insulated switchgear/gas insulated transmission line (GIS/GIL)/ insulator/ surface charge/X-ray/ active dissipation分类
信息技术与安全科学引用本文复制引用
汪沨1,梁芳蔚1,钟理鹏1,陈赦1,谢亿2..基于X射线短时照射的高压直流GIS/GIL绝缘子表面电荷主动消散方法[J].电工技术学报,2020,35(14):3147-3151,5.基金项目
国家自然科学基金资助项目(51677061). （51677061）
