태양전지모듈 고장 진단 알고리즘을 적용한 모니터링시스템

• Published in: 한국태양에너지학회 논문집 Vol. 38; no. 3; pp. 21 - 28
• Main Authors: 고석환(Ko Suk-Whan), 소정훈(So Jung-Hun), 황혜미(Hwang Hye-Mi), 주영철(Ju Young-Chul), 송형준(Song Hyung-June), 신우균(Shin Woo-Gyun), 강기환(Kang Gi-Hwan), 최정내(Choi Jung-Rae), 강인철(Kang In-Chul)
• Format: Journal Article
• Language: Korean
• Published: 한국태양에너지학회 2018
• Subjects: 태양광발전시스템(Photovoltaic System); 모니터링(Monitoring); 바이패스다이오드(Bypass Diode); 고장 진단알고리즘(Diagnosis Algorithm)
• ISSN: 1598-6411; 2508-3562

The objects of PV (Photovoltaic) monitoring system is to reduce the loss of system and operation and maintenance costs. In case of PV plants with configured of centralized inverter type, only 1 PV module might be caused a large loss in the PV plant. For this reason, the monitoring technology of PV module-level that find out the location of the fault module and reduce the system losses is interested. In this paper, a fault diagnosis algorithm are proposed using thermal and electrical characteristics of PV modules under failure. In addition, the monitoring system applied with proposed algorithm was constructed. The wireless sensor using LoRa chip was designed to be able to connect with IoT device in the future. The characteristics of PV module by shading is not failure but it is treated as a temporary failure. In the monitoring system, it is possible to diagnose whether or not failure of bypass diode inside the junction box. The fault diagnosis algorithm are developed on considering a situation such as communication error of wireless sensor and empirical performance evaluation are currently conducting.