GIS 립 스페이서의 가상스트리머 진전에 따른 전계해석 및 절연특성

Electric Field Analysis with Imaginary Streamer Process and Insulation Characteristics on the Ribbed Spacer for GIS

The effect of ribbed spacers having metallic particle attached to the post-type spacer on dielectric breakdown phenomena has been investigated using electric field analysis for imaginary streamer process and a breakdown experiment. It was described that the electric field analysis and the dielectric breakdown test were performed on the case that the particle was attached to the various position of the ribbed spacer having various shapes. As a result, the breakdown voltage of the spacer with two ribs was highest, and it was varied by the length and the thickness of the rib. Especially, in case of the rib with round edge, the breakdown voltage was higher than that with rectangular edge, which complied with the result through the field analysis.