Reliability Evaluation of Radial Distribution Network for Educational purpose using Greedy Search Approach- Distribution Network Data and Results

Abstract

Distribution networks, established over past decade are not enough smart to satisfy the growing demand of the society for reliable power supply. Being the only link between utility and consumers, it is an utmost important to analyze and enhance the reliability of distribution network. Reliability improvement demands investment, which will increase the supply cost. Network reconfiguration can be a way to mitigate the investment issue and to enhance the system reliability. This paper presents the optimal network configuration by changing the open/close sequence of sectionalizing switches and tie switches to reduce the Expected Cost of Interruption (ECOST) and Energy Not Served (ENS), well known reliability indices. The Greedy search algorithm is used in MATLAB environment to determine the optimal result. Further, to get more realistic results, effects of fuse failure probability and load transfer restriction are also included in the proposed approach. The radial distribution network of the Roy Billionton Test System (RBTS), which is connected at BUS-2, is utilized as a case study, where various types of loads (Residential, Commercial, Small users and Govt. and Inst. Buildings) are connected.