Performance Analysis of a Mountain Land PV Plant and a Water Surface PV Plant

摘要

This paper analyses the performance of a mountain land photovoltaic (PV) plant in north China and a water surface PV plant in South China. A subsystem of each PV plant was selected to be monitored by a data acquisition system. The results show that the performance radio (PR) of the water surface PV subsystem is higher than that of the mountain land PV subsystem. The analysis also shows that main losses of mountain land PV subsystem are shadow loss and dust loss while that of water surface PV subsystem is module power degradation. The main cause of the shadow loss and dust loss of mountain land PV plant is due to the mountain terrain and dry sandy climate in North China while that of the module power degradation of water surface PV subsystem is due to the potential induced degradation (PID) in humid and rainy environment in South China.