积灰对屋顶光伏电站性能的影响

Influence of dust deposition on the performance of rooftop solar power stations

探讨了积灰问题对屋顶光伏电站电性能和热性能的影响。在积灰的初始阶段,组件的发电量下降得较为明显;同时,积灰并未明显改变组件的温度,表明积灰不会改变光伏电池片实时发电效率。积灰对光伏电站发电量的影响主要表现在组件表面太阳光透过率的变化。

The influence of PV modules surface dust deposition on the electrical and thermal performance of rooftop solar power station is studied. The simulation results show that the generation power declines apparently at the beginning of the dust accumulation period. At the same time, the experimental results show that the dust deposition does not significantly change temperature of the PV modules. This means that the dust deposition will not change efficiency of the PV modules. The main factor that the generation power will be influenced by the dust deposition is the variation of the solar light transmittance caused by the dust.