한국전기전자재료학회논문지 (Journal of the Korean Institute of Electrical and Electronic Material Engineers)

  • 제37권3호
  • /
  • Pages.286-291
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  • 2024
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  • 1226-7945(pISSN)
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  • 2288-3258(eISSN)
한국전기전자재료학회 (The Korean Institute of Electrical and Electronic Material Engineers)
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과도한 인장력에 따른 해상풍력단지 해저케이블의 절연 특성 평가

Evaluation of Insulation Characteristics of Submarine Cables in Offshore Wind Farm by Excessive Tension

  • 이승원 (한국전기연구원 전력케이블연구센터) ;
  • 최진욱 (한국전기연구원 전력케이블연구센터) ;
  • 권익수 (한국전기연구원 전력케이블연구센터) ;
  • 김동은 (한국전기연구원 전력케이블연구센터) ;
  • 김해종 (한국전기연구원 전력케이블연구센터)
  • Seung-Won Lee (Power Cable Research Center, Korea Electrotechnology Research Institute) ;
  • Jin-Wook Choe (Power Cable Research Center, Korea Electrotechnology Research Institute) ;
  • Ik-Su Kwon (Power Cable Research Center, Korea Electrotechnology Research Institute) ;
  • Dong-Eun Kim (Power Cable Research Center, Korea Electrotechnology Research Institute) ;
  • Hae‑Jong Kim (Power Cable Research Center, Korea Electrotechnology Research Institute)
  • 투고 : 2024.01.11
  • 심사 : 2024.01.22
  • 발행 : 2024.05.01
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초록

Research on aged insulation of cables by stress is constantly being considered for reliable and stable power transmission of offshore wind farms. This study aimed to evaluate the insulation characteristic of aged XLPE (cross-linked polyethylene) insulation for application of offshore wind farms. In this study, The XLPE insulation of cable was set as various mechanical strains. The XLPE insulation is exposed to the mechanical stress below yield strain of 5%, 10%, and 20%. Aged samples were tested by using the method of AC BDV (alternative current breakdown voltage), tensile strength, elongation, and SEM (scanning electron microscope) to obtain insulation characteristics. The experimental results show that the dielectric breakdown of the sample with a strain 20% was 50% lower than the unaged sample; thereby, demonstrating that the mechanical strain that occurred in the submarine cables can weaken the insulation characteristics. Therefore, mechanical strain should be monitored when laying and operating submarine cables for offshore wind farms.

키워드

과제정보

이 논문은 2024년도 정부(산업통상자원부)의 재원으로 한국에너지기술평가원의 지원을 받아 수행된 연구임(20213000000020, 해상풍력단지 해저 전력망 구축을 위한 핵심기자재 및 평가 기술 개발).

참고문헌

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