OPTIMAL DG PLACEMENT FOR MAXIMUM LOSS REDUCTION IN RADIAL DISTRIBUTION NETWORK

Abstract

Distributed Generation is a promising solution to many power system problems such as voltage regulation, power loss, etc. The appropriate location of Distributed Generation is very important for loss reduction in a radial distribution system. Normally, a constant power (real and reactive) load model is assumed in most of the studies made in the literature. It is shown that load models can significantly affect the optimal location and sizing of Distributed Generation (DG) resources in distribution systems. In this dissertation two methodologies Heuristic Techniques and Fuzzy Logic Based are used for find out most critical node, named sensitive node, for installing DG system. The placement of DG in the radial distribution systems to reduce the real power losses and to improve the voltage profile. The studies have been carried out on 33-bus distribution systems. It is shown that the load models can significantly affect the optimal location and size of the resources of the DG in distribution systems function. The proposed approach also considers a wide range of technical issues such as the loss of active and reactive power system, the voltage profile, the line loading, and the Mega Volt Ampere (MVA) intake by the grid. An analysis of the continuation power flow to determine the effect of DG units on the most sensitive buses to voltage collapse is carried out. The proposed algorithm is tested using a 33-bus radial system.