EU PVSEC 2015 Conference Sub-Topic 5.1 Operation of PV Systems Plants Impact of temporal and spatial discretization on the agreement between measured and modeled performance of large photovoltaic power plants

摘要

The choice of temporal and spatial scales has a direct impact on the agreement between the measured and modeled performance of photovoltaic power generation systems. Experimental and simulation results are presented in this work for a recently commissioned MW Concentrating Photovoltaic (CPV) power plant equipped with module assemblies of multi-junction solar cells mounted on two-axis trackers and connected to central inverter stations. Performance simulations have been conducted with a proprietary software package that includes state of the art approaches required to model the conversion process from incoming solar irradiance into electrical energy. Comparison of measurements and computed results show that more accurate production predictions and lower uncertainties are achievable when supported by adequate discretization of time and space scales.