STUDY ON AREAL SOLAR IRRADIANCE FOR ANALYZING AREALLY-TOTALIZED PV SYSTEMS

This paper describes the methodology for quantification of solar irrad iance fluctuation in order to analyze the areally totalized PV systems , which consist of a large number of PV systems connected to each othe r in the optimum size of a certain community area. Two factors quantif ying the fluctuation, fluctuation factor and power spectral density, a nd some examples are presented. Also cross-correlation analysis betwee n nine stations' measurements were operated to estimate the extent of the power fluctuation in a certain area size and to determine optimum size of the area of areally totalized PV systems.