TY - JOUR
T1 - Evaluation based on performance and failure of PV system in 10 years field-aged 1 MW PV power plant
AU - Oh, Wonwook
AU - Choi, Hoonjoo
AU - Seo, Kun Won
AU - Kim, Daesung
AU - Kim, So Yeon
AU - Lee, Hae Seok
AU - Hwang, Heon
AU - Kim, Donghwan
N1 - Funding Information:
This research was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and the Ministry of Trade, Industry and Energy (MOTIE) of the Republic of Korea (No. 20193020010390 ). Funding: This work was supported by the Ministry of Trade, Industry and Energy (MOTIE), Korea Institute for Advancement of Technology (KIAT) through the Encouragement Program for The Industries of Economic Cooperation Region ( P0002328 ).
Publisher Copyright:
© 2020 Elsevier Ltd
PY - 2020/11
Y1 - 2020/11
N2 - PV (Photovoltaic) power systems have been rapidly installed and spreading worldwide in recent years. And there is a belief that the PV power plant will operate stably for more than 25 years. However, the PV modules have an unexpected failure. In this paper, we diagnosed a 10-year-old power plant using drone with infra-red (IR) camera, current-voltage (I-V) and electroluminescence (EL) measurement. The approximately 1 MW plant, consisting of two different PV modules, 200 W and 220 W, showed various failure modes. 59% PV modules failure caused an output loss, and an inverter with a serious loss is expected to degrade more than its annual degradation rate in PV strings above 40%. As a result, the power loss was quantitatively estimated to hot spot, bypass diode failure and degradation rate, and the capacity of the current PV system was evaluated at 88.3% and 93.2%.
AB - PV (Photovoltaic) power systems have been rapidly installed and spreading worldwide in recent years. And there is a belief that the PV power plant will operate stably for more than 25 years. However, the PV modules have an unexpected failure. In this paper, we diagnosed a 10-year-old power plant using drone with infra-red (IR) camera, current-voltage (I-V) and electroluminescence (EL) measurement. The approximately 1 MW plant, consisting of two different PV modules, 200 W and 220 W, showed various failure modes. 59% PV modules failure caused an output loss, and an inverter with a serious loss is expected to degrade more than its annual degradation rate in PV strings above 40%. As a result, the power loss was quantitatively estimated to hot spot, bypass diode failure and degradation rate, and the capacity of the current PV system was evaluated at 88.3% and 93.2%.
UR - http://www.scopus.com/inward/record.url?scp=85088949351&partnerID=8YFLogxK
U2 - 10.1016/j.microrel.2020.113763
DO - 10.1016/j.microrel.2020.113763
M3 - Article
AN - SCOPUS:85088949351
SN - 0026-2714
VL - 114
JO - Microelectronics and Reliability
JF - Microelectronics and Reliability
M1 - 113763
ER -
