Study on power generation of PV station under shadow effect of ultra high voltage tower

In this paper, a photovoltaic station which local in Yancheng, Jiangsu province with installed capacity 19MW as an example to analysis the output of PV station which effect by the shadow of (ultra high voltage) UHV tower. Firstly, the model of UHV tower is established, the shadow range of UHV tower on winter solstice day is calculation according to local latitude and longitude information combined with the method of sun position calculation. Secondly, according to the location of UHV tower placed in PV station and the number of UHV tower, the range of UHV tower shadow which effect the PV station is analyzed. Based on these analysis, the change of annual power generation of PV station which before and after the effect of UHV tower shadow is simulated. The results shows that, this PV station which installed capacity is 19MW will be loss 139593kWh power generation per year by the effected of UHV tower shadow. The simulation results can provide some suggestions for the PV station and UHV optimization design.