태양광 발전소의 음영 분석과 발전량 상관관계 분석

• Published in: 한국태양에너지학회 논문집 Vol. 41; no. 2; pp. 1 - 8
• Main Authors: 오원욱(Oh Wonwook), 전성근(Jeon Seonggeun), 윤아영(Yoon Ayoung), 김대장(Yoon Ayoung), 최훈주(Choi hoonjoo)
• Format: Journal Article
• Language: Korean
• Published: 한국태양에너지학회 01.04.2021
• Subjects: 기타공학; 부분음영(Partial shading); 모니터링(Monitoring); 발전성능(Performance ratio); 음영 분석(Shading analysis); 발전량 손실(Power output loss)
• ISSN: 1598-6411; 2508-3562

A photovoltaic (PV) string consists of PV modules that are connected in series. When partial shading occurs in the PV modules, the total PV string current is lowered. When the partial shading becomes severe, the bypass diode operates. Most PV systems are exposed to partial shading by nearby terrain, rather than an actual shaded flat environment. In this study, shading analysis was performed at 19 points of a 33.2 kWp solar power plant installed on the roof of a building, and the shaded irradiance ratio at the PV module location was estimated using this result. We compared the results of the performance ratio monitored for one year. As a result, the expected output ratio of the shading analysis compared to normal was found to be 89.6%, and the annual performance ratio was 90.2%. KCI Citation Count: 0