ABSTRACT: A distributed generation (DG) is an electric power source connected into utilities networks at distribution level with typically ranging from 10 kW up to tens of MW capacity. A study by the Electric Power Research Institute (EPRI) have predicted that DG may account for up to 25% of all new generation going online by the year 2010. The integration of DG will be increase and give the benefit contribution to existing grid power system operation and has been an active area of research today.