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In this study, a mathematical model is simulated in order to collect the solar radiation; consequently, evaluate the output power generated from photovoltaic panels (PVs). The simulation is based on two models of solar panels, one with Sun-tracker and the other one is stationary to illustrate differences between the PVs output power related to either tracking the sun or with fixed installation. PVs are simulated with three types of output power, 150 KW, 300 and 600 KW. After calculating the output power for the PV panels, it is possible to find the PVs optimum placement and sizing for a 69 IEEE RTS distribution power system in order to reduce power line losses and also receiving the maximum profit by selling the generated power via PVs. Placing and sizing the PVs are limited by common power system limitation such as voltage profile as well as overcurrent violation in the distribution system. Aside from that additional limitations such as reverse power flow, power line capacity and different group of loads, such as residential, industrial and agricultural, are considered in this paper in order to make the simulation more realistic. Moreover, meteorological data is collected from metrological organization of Mashhad, Iran. Finally, after calculating the injected power using PVs the amount of reduced energy from the main feeder is calculated; and consequently, economic benefit for the customers is evaluated. Economic evaluation for this study took place in 2014 according to Iran's electricity market.

Optimal Placement and Sizing for Solar Farm with Economic Evaluation, Power Line Loss and Energy Consumption Reduction