OPTIMAL DG AND CAPACITOR ALLOCATION IN DISTRIBUTION SYSTEMS USING DICA

In this paper, a method was presented based on Discrete Imperialistic Competition Algorithm (DICA) for optimal placement of Distributed Generation (DG) and shunt capacitors. In this paper a new assimilation mechanism in introduced for DICA. Developments of various technologies of distributed generation and their cost-effectiveness have increased the use of these resources. Shunt capacitors, as reactive power compensators, are also the equipment that inject reactive power to distribution network in order to improve voltage profile release a part of the network capacity and also reduce the losses. The objective function was defined based on the reduction of active power losses. The performance of the proposed method tested on two, 33-bus and 69-bus IEEE standard systems. In spite of the objective function defined based on active losses reduction, the results demonstrated that, voltage profile improved and reactive losses greatly reduced after optimal DG and capacitor allocation.