인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록·키워드
The increasing deployment of photovoltaic (PV) generation has raised concerns regarding the fire safety of outdoor power conversion systems (PCS). This study investigates a fire accident involving a 250kW grid-connected PV PCS through field inspection, event analysis, damaged components, and 3D X-ray CT analysis. Fire damage was concentrated around the DC-link capacitor bank, plate busbars, insulation layer, and IGBT stack. The observed localized melting, perforation, and insulation damage indicate that insulation degradation and surface discharge between the plate busbars may have contributed to the accident progression, although the initial ignition source could not be conclusively identified. The creepage distance of the insulation structure was additionally evaluated with reference to IEC 60664-1 considering pollution degree and material group. Based on the accident analysis, improvements including strengthened busbar insulation design and inspection, PV-side rapid shutdown, and coordinated DC/AC isolation are proposed. The results will provide a basis for improving PCS fire prevention, inspection, and protection designs.
본문·목차
인공지능 문자 인식 모델을 통해 추출된 텍스트로, 일부 오타나 오류가 포함될 수 있으나 지속적으로 개선 중입니다.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.
오류를 발견하셨다면 해당 부분을 드래그한 후 ' 를 통해 신고해주세요.