An Evaluation Method for PV System to identify system losses by means of utilizing monitoring data

The rapid growth and expansion of grid-connected photovoltaic (PV) systems utilization is significantly beneficial to the mitigation of environmental issues. Even though they are known as the maintenance free generation, PV systems have to be monitored and evaluated their output energy since certain troubles have been reported. Therefore, an evaluation method for PV systems seems to be necessary. In our laboratory with TUAT, the sophisticated verification (SV) method, which is the evaluation method for PV systems, has been developed. The method can estimate system losses by using a few utilized monitoring data items despite of numerous kinds of losses. The paper describes to summarize the SV method, and examples of evaluation results