| Title |
Surface Discharge Characteristics in Dry-Air on Laminated Epoxy Solid Dielectrics and Conductive Particle |
| Authors |
Dong-Young Lim ; ??Jong-Cheul Jeon ; ??Sungwoo Bae? ; ?Kwang-Sik Lee ; ??Won-Zoo Park |
| DOI |
http://dx.doi.org/10.5207/JIEIE.2016.30.2.093 |
| Keywords |
Conductive particle ; Dielectric polarization ; Dry-air ; Epoxy resin ; Gas insulated switchgear ; Surface discharge |
| Abstract |
This paper presents the surface discharge characteristics in Dry-Air on laminated epoxy solid dielectrics and conductive particles in order to provide the valuable information for the insulation design of eco- friendly gas insulated switchgear. To improve insulation performance, the three types of the laminated epoxy solid dielectrics were proposed, and it was revealed that their surface discharge characteristics were similar to the bakelite dielectrics of same-laminated types. From the surface discharge characteristics of dry air, it was demonstrated that the effect of conductive particles on surface discharge voltage was dominant when there are this particles at the shortest electrode gap and that the degradation of insulation performance on the conductive particles was evident in epoxy than teflon. These phenomena were interpreted in terms of particle-triggered discharge mechanism and electric field of triple junction, respectively. |