Abstract
수상태양광을 개발하기 위해서는 무엇보다 가볍고 높은 인장을 갖는 재료를 적용하여 부력에 부담을 줄여주고 부식 저항이 높은 재료특성이 요구된다. 따라서 수상태양광발전 구조물에 적합한 강도, 내구성, 제작 및 용접성을 개선시킨 새로운 고강도 강재의 수상태양광 적용가능성 연구가 필요하다. 본 논문에서는 수상태양광에 적합한 강재선정을 위해 일반강재(SS400)와 고강도강재(POSH 690)의 기계적 하중시험과 강재의 부식시험을 수행하였다. 고강도 신소재강에 대한 시험결과 기존 일반 강재에 비해 기계적 성능이 우수한 것으로 검증되었고, 이 강재를 실제 현장에 제작하여 비교한 결과 기존 강재에 비해 중량이 30~40% 정도 중량감소 효과를 확인하였다. For the development of a floating photovoltaic system, materials with light weight and high tensile strength must be applied to reduce the burden on buoyancy, and material characteristics with high resistance to corrosion in water environment is required. Accordingly, a new high strength steel material with improved strength, durability, manufacturability, and weldability that are appropriate for floating photovoltaic system structures is needed. This paper reports the results of a mechanical load test and steel corrosion test on general steel (SS400) and high strength steel (POSH 690) for the selection of an appropriate steel material for a floating photovoltaic system. The results of a test on new high strength steel revealed excellent mechanical performance compared to general steel. The new steel material was manufactured for use in an actual site, and the weight was reduced by approximately 30~40% compared to existing general steel.
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