An-Najah Staff

This thesis presents the application of photovoltaic system for electrification of small villages by centralized or decentralized configuration. The purpose of this work is to select the optimum design and optimum PV system configuration based on the life cycle cost (LCC) of alternatives. This method is expected to stabilize the system operation, extends the system component lifetime and reduces the energy costs. The study on selection of the optimum design and configuration has been evaluated for the three small villages in Tubas district area ( Salhab,Ibziq and Yarza) as case study. A variety of distances between houses and sizes of villages have been selected and tested in the model, to determine the life cycle cost and the cost annuity in each case. The design of centralized PV system depends on the number of consumers, loads of the villages and the distance between consumers which affects the cost of distribution network of the system. The design of decentralized PV system, depends only on the individual electrical load for each house. For the three selected villages mentioned before, the LCC and cost annuity of decentralized PV system found less than centralized PV system in the average of 12.87% and 5.38% respectively. Maximum overall efficiency found for decentralized 11.59%, which is more than 10.90% for centralized PV system. DC load of decentralized PV system was also tested and cost annuity for the same villages found to equal 0.748 $/kWh which is less in 17.3% than of AC decentralized PV system.