Power Cable Insulation Diagnosis Using Low Frequency Power

저주파수 전원을 이용한 전력케이블 절연평가에 관한 연구

As time goes by these cables make a insulation problems, and ask for a preventive diagnosis method. Cable has very high electrostatic capacity and insulation defects mainly caused by water-tree(WT). Dissipation factor test is very useful for detecting WT but it needs huge power supply. In this paper we presented a cable insulation diagnosis by dissipation factor using low frequency power supply.