Power cable

• Main Authors: KIM, DU KI, NAM, GI JOON, LEE, IN HWOI, BAK, WOO JEONG
• Format: Patent
• Language: English; Korean
• Published: 15.01.2018
• Subjects: BASIC ELECTRIC ELEMENTS; CABLES; CONDUCTORS; ELECTRICITY; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES

The present invention relates to a power cable, and more particularly, to an ultra high voltage underground or submarine cable for long distance direct current transmission. Specifically, the present invention relates to the power cable in which the dielectric strength of an insulating layer is high, the electric field applied to the insulating layer is effectively reduced, and especially partial discharge, dielectric breakdown, etc. due to an electric field concentrated on an oil-free void is effectively suppressed by suppressing the oil-free void where insulating oil does not exist from being formed in the insulating layer. Therefore, the lifetime of the power cable can be extended. 본 발명은 전력 케이블, 특히 장거리 직류송전용 초고압 지중 또는 해저 케이블에 관한 것이다. 구체적으로, 본 발명은 절연층의 자체적인 절연내력이 높고, 상기 절연층에 인가되는 전계가 효과적으로 완화되며, 특히 절연층 등에 절연유가 존재하지 않은 탈유 공극(void)이 발생하는 것을 억제하여 상기 공극에 집중된 전계에 의한 부분방전, 절연파괴 등을 효과적으로 억제함으로써 수명이 연장될 수 있는 전력 케이블에 관한 것이다.