Abstract
A small isolated sustainable power generation system comprising of photovoltaic with pumped storage and an open well is presented in this paper. In many rural and remote areas of developing countries electricity is still not accessible, but open wells are there. Therefore, the proposed system can be an interesting solution for clean electricity supply to such areas. An innovative operational methodology is developed in proposed system to generate continuous electricity at stable voltage exactly equal to designed value. Mathematical model of present system is worked out. A case study for designing a 750 W, 230 V, 1-phase, 50 Hz system is undertaken to evaluate the model performance. The results obtained using real solar irradiation data show the continuous power generation of 750.29 W at 230.06 V, which are in close affirmation with designed values. Economic analysis of the present system is also carried out and levelized cost of electricity generation is computed to be 0.053 $/kWh. System provides low cost quality power that is not affected by solar irradiation changes and poses no threat to environment and public health as posed by battery storage. Also, the system is quite robust with distinguished features of simplicity and reliability.
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