해저케이블용 피기백 클램프의 기계적 성능 연구
Mechanical Performance Study of Piggy Back Clamp for Submarine Cables
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초록
지속적으로 증가하는 세계적인 전력수요로 인해 고전압 해저케이블 수요도 증가하고 있다. 해저케이블은 고가의 제작 비용과 높은 단가의 포설 비용 등이 해결되어야 할 부분 중 하나이다. 해양 환경에 노출된 해저케이블은 파랑 및 해류 등의 외력들에 의해 케이블 손상이나 사고 시에는 높은 유지 보수 비용 등의 문제가 발생할 수 있다. 따라서 해저케이블은 다양한 종류의 보호 기자재를 통해 해저 환경의 불확실성에 대비하고 있다. 본 연구에서는 대표적인 보호 기자재인 피기백 클램프(PBC)와 클램프에 사용되는 스트랩(strap)을 대상으로 해석적 방법을 통해 휨 성능을 살펴보았다. 피기백 클램프의 구조적 성능 검토를 위해 유연 보호 튜브의 최대 굽힘 모멘트 기준치인 15 kN∙m 값을 토대로 휨 성능을 분석하였다, 그 결과, 피기백 클램프 및 strap의 굽힘 모멘트에 대한 휨 성능이 확보되었음을 확인할 수 있었다.
Abstract
Due to the continuously increasing global demand for electricity, the demand for high-voltage submarine cables is also increasing. One of the issues that need to be addressed for submarine cables is the high production cost and expensive laying costs. Submarine cables exposed to the marine environment encounter external forces such as wave and current, leading to issues such as cable damage due to external factors or high maintenance costs in the event of an accident. Therefore, we are preparing for the uncertainty of the submarine environment through many protective materials and protective equipment. In this study, we examined the bending performance of piggyback clamps (PBC) and strap, which are representative protective equipment, in response to the submarine environment through analytical methods. To examine the structural performance of PBC, the bending performance were assessed under the maximum bending moment criterion of 15 kN∙m for the flexible protection tube. As a result, it was confirmed that the structural performance regarding the bending moment of both PBC and straps was ensured.
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