A Experimental Study to Control Local Electric Field Intensification at Grounded Part of the Spacer in SF6 Gas Insulating System

SF6 가스절연 스페이서의 접지부 전계 완화에 대한 실험연구

This study is to develope a spacer having almost uniform field distribution along the profile by controlling the high electric field in tensification at earthed part, especially triple junction in the spacer-electrode-gas boundary interface. Based on the extensive field calculation using CSM, a model spacer has been manufactured and tested. The test results show that the breakdown strength of the spacer is almost same as that of SF6 gas itself without spacer.