容配比超配条件下采用高功率光伏组件的光伏电站发电量损失分析OA

To further improve the power generation efficiency of PV power stations,high-power n type bifacial PV modules such as TOPCon、HJT and BC have received widespread attention.For these high-power PV modules,the power overmatching losses and DC limiting losses of inverters under different solar resource areas and active overmatching method of PV power to inverter power ratio are analyzed.This paper first selects three areas as representative areas from Class Ⅰ～Ⅲ solar energy resource areas,namely Ruoqiang County in Bayingolin Mongolian Autonomous Prefecture,Xinjiang Uygur Autonomous Region,Zhangjiakou City in Hebei Province,and Huanggang City in Hubei Province,and calculates the number of series connected PV modules of PV power stations built in these three areas using different high-power PV modules.Then use PVsyst software to simulate the power generation capacity loss of these three PV power stations under different peak power of PV modules and PV power to inverter power ratio overmatching conditions.Analysis results show that:1)For PV power station using different types of high-power PV modules,there has been no DC limiting losses under Ⅰ～Ⅲ solar resource areas and different PV power to inverter power ratio over matching conditions.2)For high-power PV modules of the same type,when the same PV power to inverter power ratio is used,the overmatching loss of inverter power in areas with better solar energy is higher.