Utility scale photovoltaic plant indices and models for on-line monitoring and fault detection purposes

The proposed methodology has been applied to a utility scale PV power plant (rated 1 MW), where a Supervisory Control and Data Acquisition system has been installed; operational data are saved on a remote server and available on a dedicated website. The experimental results show the effectiveness of the proposed approach. In order to have the possibility to analyze and compare the performance of the studied PV plant with others, the efficiency of the system has been estimated by both conventional Performance Ratio and Corrected Performance Ratio.