太陽光発電,風力発電の大量導入と日本の最適電源構成に関する分析

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  • Assessment of Japan's Optimal Power Generation Mix Considering Massive Deployment of Variable Renewable Power Generation
  • タイヨウコウ ハツデン,フウリョク ハツデン ノ タイリョウ ドウニュウ ト ニホン ノ サイテキ デンゲン コウセイ ニ カンスル ブンセキ

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This paper analyzes Japan's optimal power generation mix considering massive deployment of solar photovoltaic (PV) system and wind power generation. The extensive introduction of PV system and wind power system are expected to play an important role in addressing energy security and climate change concern in Japan. Considering this expected large-scale deployment of PV system in electric power system, it is necessary to investigate the optimal power generation mix which is technologically capable of controlling and accommodating the intermittent output-power fluctuation inherently derived from PV and wind energy system. On these backgrounds, we develop optimal power generation mix model, explicitly analyzing the impact of output fluctuation in variable renewable in detailed resolution of time interval like 10 minutes at consecutive 365 days, with the role of stationary battery technology incorporated. Simulation results reveal that considerable deployment of those variable renewables do not necessarily require the scale of battery capacity similar as that of variable renewable capacity, due to quick load following treatment by thermal power plants, pumped-storage hydro power and battery technology over renewable output fluctuation.

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