PD（partial discharge）of UHV substation GIS is more serious than EHV substation

on-line UHF partial discharge monitor can detect inside partial discharge

however

there are still some problems such as poor reliability and high misinformation rate.This paper expounds the application status and configuration situations of partial discharge on-line monitoring technologies for UHV substation GIS

analyses the existing problems

and presents corresponding promotion measures.Combined the application situation of on-line monitoring in UHV Substation

it is proved that GIS partial discharge on-line system has foreseeability of some GIS internal failure.After taking the improvement measures

with mobile charged detection technology

the failure of GIS partial discharge can be traced and found effectively

and the major UHV equipment failure can be avoided.