Abstract
Power produced by utility-scale solar photovoltaic (PV) systems has
fluctuations on both short and long time scales. Power spectral density
(PSD) analysis provides information on the character of these power
fluctuations. Examination of the correlation and step size of the
power output between several PV sites within a multi-site system
allows assessment of geographic diversification for addressing intermittency.
Both techniques provide insight into the characteristics of firm
power and/or demand response required to accommodate large-scale
PV deployment.
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