PV-hybrid power systems sizing incorporating battery storage: an analysis via simulation calculations

A methodology is developed to determinate the optimal size of PV-hybrid sub systems and to optimize the stand-alone system management. Two particular p arameters characterize the back-up engine generator: SDM and SAR, respectiv ely the starting and the stopping thresholds calculated as a part of the no minal storage capacity. Using simulation calculations, the optimal configur ation leading to the autonomy constraint, is determined on the basis of a m inimization of the kWh cost. The operating back-up generator strategy study has shown that the smallest kWh cost is obtained for a system characterize d by a SDM = 30% and SAR = 70% of the nominal battery capacity. (C) 1999 El sevier Science Ltd. All rights reserved.