SF_6/N_2-高分子薄膜复合绝缘电击穿特性的试验研究

Experimental Study on Electric Breakdown Behaviour of SF 6/N 2-Polymer Film Composite Insulation

研究了ＳＦ６／Ｎ２－高分子薄膜构成的复合绝缘电击穿特性．研究结果表明：该种复合绝缘中高分子薄膜的介电常数越小，击穿场强越高，其复合绝缘总击穿电压越高；高分子薄膜间隙加粘合介质以排除气隙，可使复合绝缘总击穿电压提高．所得结果与结论为ＳＦ６气体绝缘电气设备的绝缘结构设计提供了参考．

AC electric breakdown behaviour of composite insulation SF 6/N 2-polymer film is studied Experimental results show that AC breakdown voltage on the composite insulation increases with decreasing of the polymer film permittivity and addition of liquid adhesive in the gap of film for elimination of gas These results provide reference for the insulation structure design of electrical apparatus with SF 6/N 2-polymer film composite insulation