An application of complex network in allocation of distributed generation in distribution network

Abstract

The application of complex networks have significantly advanced in the last decade and brought about valuable insights to properties of real world systems by evaluating their structure, topology and construction. Power grid is one such real world network in which a technique of analyzing the location of a distributed generation in a distribution system of a grid has been applied based on complex network theory. The metric of electrical centrality is the approach used in differentiating the physical and electrical topological structure of the chosen network. Z-bus matrix represents the more electrically central nodes and it has been found out directly by the formulation of the Z-bus algorithm as it is more practical for larger systems. The results were obtained for 33-bus distribution system from which the locations of the DGs to be placed were found out. This complex network theory based method improves the voltage profile of the system significantly. By placement of one or more DGs in these electrically central nodes, the losses have also been optimized.