Tafreshi - Electrical Engineering DepartmentKhajeh Nasir UniversityTehran, Iran
Zamani - Young Researchers Club Saveh BranchIslamic Azad UniversitySaveh, Iran
Ezzsti - Young Researchers Club Saveh BranchIslamic Azad UniversitySaveh, Iran
Farashah - Young Researchers Club Saveh BranchIslamic Azad UniversitySaveh, Iran

In this paper, a methodology to perform the optimalsizing for Distributed Energy Generators in MicroGird (MG)based on Quadratically Constrained Programming (QCP) hasbeen improved to calculate the optimum system formation thatcan Accomplish the customers required Loss of Power SupplyProbability (LPSP) with a minimum Cost of Energy (COE). Theproposed method results are validated for single source DG andhybrid DG with results obtained from HOMER and QCP inGAMS for the same test systems

Optimal Sizing; Cost of Energy; Hybrid RenewableEnergy System; Nonlinear Programming, MicroGrid