大規模太陽光発電所の出力変動抑制用蓄電池容量の試算

摘要

Some MW-class PV power stations are now under construction and more PV power stations will be introduced in future. However, the penetration of PV power station may disturb a stable operation of the power system. The largest concerns are frequency variation and voltage variation caused by fluctuation of PV power station output. When these variations can not be eliminated by the conventional system operation and control schemes, installation of energy storage system might be needed. From this background, the authors have developed control method of battery system for fluctuation suppression of PV power station output. In this paper, battery capacity needed to satisfy the required fluctuation suppression level is estimated. In the estimation, two'types of suppression control schemes; one can save the required power capacity and another can save energy capacity.%地球温暖化や環境問題への対応策として，再生可能エネルギーを利用した電源が注目されており，導入が世界規模で推し進められている。太陽光発電（Photovoltaicgenera－tion，以下PV）システムは，これらの中でも最も導入拡大が期待されている電源の一つであり，我が国でも長期エネルギー需給見通しにおいて，2030年度の最大導入ケース を53,210【MW】に設定している。