直流GIS/GIL绝缘气固界面电荷积聚特性与调控研究进展(二):表面改性方法OA

Charge accumulation at the gas-solid interface of DC gas insulated switchgear/gas insulated transmission lines(GIS/GIL)insulation systems is a primary cause of localized electric field distortion and induced surface flashover,posing a serious threat to long-term operational reliability.Extensive research has been conducted worldwide on charge regulation methods at the gas-solid interface of insulators.Among these,surface modification techniques hold broad ap-plication prospects for DC GIS/GIL insulators due to their advantages of preserving the volumetric properties of solid insulating materials,simplicity of operation,and low costs,making them a current research hotspot.This paper reviews surface modification methods for controlling gas-solid interface charge in DC GIS/GIL insulation systems.This paper first summarizes research achievements in methods such as surface grinding,direct fluorination,and plasma treatment of insulating materials by domestic and international scholars.Second,this paper focuses on the currently widely studied surface coating methods,and summarizes significant research progress in functional surface coating techniques for gas-solid interface charge control.Finally,this paper outlines core scientific and technological challenges that remain to be addressed in surface modification methods for gas-solid interface charge regulation.