Methods of Determining the Introduction Limits of Dispersed Generation Systems in a Distribution System from a Viewpoint of Voltage Regulation

Abstract

Recently, there has been growing interest in utilizing DGS(Dispersed Generation System) to integrate various generation resources and to meet the changing electricity demand. In the long term, as much more introduction of both small and large capacity DGSs into the distribution system is expected, complete integration of this new technology into the utility system will bring about changes of design strategy and structural facility of the system. Thus a study is necessary to determine the introduction limit of DGS into the traditonal distribution system without any facility change. In this paper, the authors propose methods of determining the introduction limits of DGS from a viewpoint of voltage regulation in the distribution system using LRT(Load-Ratio control Transformer) and LDC (Line Drop Compensator) as the control scheme.