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Analysis for large-scale integration of PV system in Japan with a high time-resolution optimal power generation mix model

This paper assesses the possible integration of a massive PV resource into the power generation mix in Japan using a high time-resolution optimal power generation mix model. The feature of the model allows us to explicitly consider actual PV and wind output variability in 10-minute resolution on 365 days. Simulation results reveal that both the suppression control of PV output and rechargeable battery installation show a significant increase when PV installs at more than the similar scale of the peak demand or PV fraction in total power generation exceeds the level of around 20 percent. The calculated results imply as well that a large-scale integration of PV potentially decreases the usage ratio of LNG combined cycle (LNGCC) in specific seasons, which suggests the challenge for utility companies to assure LNGCC serving as a profitable ramp generator for treating the PV variability.