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재활용 가능한 폴리에틸렌과 폴리프로필렌의 전도도 온도의존성과 전력케이블 내의 전계분포에 미치는 영향
이준호(June-Ho Lee),공태식(Tae-Sik Kong),김성중(Seong-Jung Kim),권기형(Ki-Hyung Kwon),조규철(Kyucheol Cho),穗積直裕(Naohiro Hozumi) 대한전기학회 2011 전기학회논문지 Vol.60 No.10
In this work the recyclable new polyethylene(PE) and polypropylene(PP), which are thermoplastic, have been investigated as the eco-friendly insulating candidates to replace the cross-linked polyethylene (XLPE). The temperature dependence of conductivities of these materials has been measured and its effects on electric field and space charge distribution in polymeric insulated power cable under temperature gradient have been calculated. It is shown that the sensitivity of conductivity to temperature change has more critical influence to determine the electric field distribution in the power cable than the absolute value of conductivity does and it can be said that the temperature dependence is one of most important factors for the power cable design.