Combination of Network Reconfiguration and Capacitor Allocation for Loss Reduction and Voltage Improvement of Radial Distribution System

摘要

In Myanmar, radial distribution lines connected to rural area are long length and electricity demand is increasingcontinuously on the existing Yangon distribution system. It is leading to poor voltage profile and higher power losses in thesystem. There are several ways for solving voltage drop and line losses. In the past research work, it has been studied to solvethese issues by applying network reconfiguration method. Reconfiguration means restructuring the feeder lines by placingsectionalizing switches and tie switches. This paper presents a combination method that is joining up of network reconfigurationmethod and allocation of capacitor banks. Reconfiguration is carried out by changing the on/off status of opening sectionalizingswitches and closing tie switches. Exhaustive Search Technique, the simplest of all search methods, is applied for reconfiguration.Capacitor banks are also installed in order to compensate reactive power because most of the loads in the system are inductiveloads. Genetic Algorithm(GA)is to find the location of capacitor placement. These two important methods are combined togetherfor a better result of loss reduction and voltage profile improvement. The proposed combination method is testing based on thereal time data of the radial distribution system in Khayan Township in Yangon. In this study, voltage improvement withinacceptable range and power loss reduction has been executed. The executed simulation results approve on the effectiveness of theproposed method.