Optimal Distributed Generation Allocation and Sizing for Minimizing losses and Cost Function

The need for independent power generation has been increased in recent years specially with the growing demand in micro grid systems. In distribution networks with several DGs of different types and with all kinds of loads of variable nature, an optimal power balance in the system has to be achieved. This optimal objective, which results in minimal energy losses over a specific period of time, requires an optimal location and sizing of the DGs in a distribution network. This paper proposes a new optimization method in which both optimal location of the DGs and their generation profile according to the load demand profile are determined. The method is based on minimizing simultaneously the cost of investment and operation of the DGs, the cost of power delivered by the external grid as well as the cost of power losses in the network. The proposed method is tested on the IEEE standard radial distribution network considering time-varying loads.