離島型電力負荷に適した太陽光・風力ハイブリッド発電システムの構成と自然エネルギー浸透

概要

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This paper presents computer simulations for stand-alone photovoltaic/wind hybird generating systems. Two types of hybrid systems A and B: without and with a storage battery, are compared. If weather data and a load pattern are given and a natural energy penetration (NEP) is designated, the simulation could lead the system sizes (photovoltaic generator, wind generator, storage battery, etc.) and the operating method of an auxiliary generator so as to increase the effective natural energy penetration and decrease the battery capacity as much as possible. Equipment costs of the hybrid systems A and B are estimated as a function of natural energy penetration. “Kamishima” island is adopted as a site where the hybrid system is installed.The simulation results show that in case of NEP=100% the optimum ratios of photovoltaic to wind energies are 20/80 and 50/50 in systems A and B, and the appropriate battery capacity is 0.9×(one day load energy) in system B.