A flicker assessment method for PV plants considering solar radiation condition

Voltage flicker of PV plants due to the illumination condition is widely discussed. This paper introduced a flicker assessment method for PV plants considering the illumination variation. By wavelet transform method, the illumination condition is classified into four typical type. The PV inverter is tested under these typical condition and the PV station model are built on simulation platform. Then the flicker of PCC under typical condition is simulated. Using wavelet transform and statically method, weights of four typical type is calculated from the illumination condition historical data. By the simulation results and weights of four illumination condition, the flicker assessment considering an area's illumination condition is given. In this paper, the evaluation model and the evaluation process of the PV station are of a certain reference value for the evaluation of photovoltaic power station.