메뉴 건너뛰기
소속 기관 / 학교 인증
인증하면 논문, 학술자료 등을  무료로 열람할 수 있어요.
한국대학교, 누리자동차, 시립도서관 등 나의 기관을 확인해보세요
(국내 대학 90% 이상 구독 중)
고객센터 ENG
주제분류

논문 기본 정보

저자정보
(Korea National University of Transportation) (Korea National University of Transportation) (Korea National University of Transportation)
저널정보
한국조명·전기설비학회 조명·전기설비학회논문지 조명·전기설비학회논문지 제39권 제1호
오류 신고하기

피인용 0

검색

    초록·키워드

    HVDC (High Voltage Direct Current) transmission systems are efficient for long-distance, high-capacity power transfer and asynchronous network interconnection. However, insulation design is challenging due to localized polarization and space charge effects in steady-state conditions, and high electrical stress in transient conditions. This study focuses on designing corona rings for 500kV HVDC transmission systems, addressing all electrical stresses encountered under both steady-state and transient-state to enhance insulation reliability. Using COMSOL Multiphysics, three key corona ring parameters were optimized to mitigate electrical stresses. Finite element analysis showed maximum electric fields were concentrated near metal fittings and sheds under steady-state conditions, and at the triple junctions under transient-state. Before corona ring installation, safety factors were critically low at 0.5 in steady-state and 0.1 in transient conditions. The optimized corona ring increased safetyfactors to 2.5 and 3.3 in steady-state, and 1.3 and 1.2 in transient-state. These results demonstrate the optimized corona ring effectively mitigates electric field concentrations, enhances safetyfactors, and extends the operational life of polymer insulators, ensuring reliability under extreme conditions.

    최근 본 자료 전체보기

      UCI(KEPA) : I410-151-25-02-092309655