Voltage profile and power loss improvement in distribution system using MVDS considering economic enticements

Abstract

The power demand is exponentially growing across the globe. The standard distribution system fed from a high capacity power transformer and with multiple loads results in lower regulation at the tail ends. Moreover, there is an increase in the system power losses and a decrease in voltage profile. It affects the performance of the existing distribution system. In this paper, the authors have proposed a medium voltage distribution system (MVDS) to reduce the power losses and therefore improve the voltage profile for low voltage distribution system (LVDS). New distribution transformers (DTRs) of small capacity have been introduced in the distribution system along with the replacement of the existing high capacity DTRs. This method has been applied to a 20-node low voltage radial distribution network, where the voltage profile and losses were unsatisfactory. The simulation has been performed using the MATLAB environment and the results demonstrate the effectiveness of the proposed method in terms of the technical and economic feasibility. It is observed that the average voltage profile is improved by 15.6%, tail end voltage is enhanced by 23% and losses are reduced by 84% for existing the LVDS, which achieved economic benefits after 36 months for a distribution company (DSCO) and resulted in a prolonged lifetime of the equipment.