Comparing with ultrasonic partial discharge detection method

ultra high frequency partial discharge de-tection method detects and locates internal discharge defects of GIS solid insulation with good effect

however

be-cause internal discharge defect position and type can not be confirmed

equipment maintenance strategy accordingto this is difficult to ensure perfection and accuracy. So

this article research on combined method of ultra high fre-quency partial discharge and X-ray digital imaging defect detection for detecting internal discharge defects of GISsolid insulation

after solid insulation defects are detected and located by ultra high frequency partial discharge de-tection method

defects can be visual confirmed by X-ray digital imaging during equipment maintenance. In 110kVGIS on-site detection of one 110kV substation. This method successfully detects the electrical tree defect in the in-sulation rod of disconnector in a live detection of 110kV GIS in a 110kV substation

which indicates that the meth-od is helpful to improve the detection and location effect of partial discharge in GIS solid insulation

and providesreliable basis for maintenance.