In this study, the outputs from a simple PV performance model were compared to measurements of AC power for three PV systems located across Sydney, Australia. The study aimed to investigate the level of uncertainty and bias of the model when onsite measurements of plane of array (POA) irradiance and module temperature were not available. The results demonstrated that the simple PV performance model estimated the AC performance with a low level of model bias (NBME=±3.2%) and uncertainty (NRMSE
Rapid growth of distributed small scale Photovolatic (PV) systems has increased the need for tools that can undertake reliable real time monitoring of system performance with the capability to detect and diagnose underperformance at the earliest possible stage. This project refined the system performance algorithms within Solar Analytics, a PV systems monitoring tool offered by Suntech, to improve their accuracy and to test their ability to predict the performance of residential and commercial PV systems.