Abstract
The electrical yield of fishery complementary photovoltaic (FPV) power plants can be self-sustained through aquaculture, offering certain advantages over land-mounted photovoltaic systems. However, electrical yield was affected by environmental factors. The screening of impactful factors and quantification of the relationship between electrical yield and these factors are difficult for FPV power plants because of lacking observation materials. Therefore, electrical yield and its main impactful factors under various cloud cover conditions through in-situ observations were investigated in this study. The results indicated that distinct variations in electrical yield and impactful factors with different clearness index. Downward shortwave radiation (DSR), panel temperature, and vapor pressure deficit (VPD) jointly impact electrical yield. When panel temperature is below 30 °C, electrical yield capacity increases by 10 kWh for every 1 W m⁻2 rise in DSR. Moreover, a 1 kPa rise in VPD results in an approximate 9.50 kWh increase in electrical yield for each 1 W m⁻2 rise in DSR. This study will be crucial for effective electrical yield management planning for aquaculture in FPV power plants.
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