VOLTAGE STABILITY IMPROVEMENT WITH INTEGRATION OF DG INTO THE DISTRIBUTION SYSTEM

ABSTRACT : One of the modern and important techniques in the electrical distribution systems is to solve the networks problems service availability, high loss and to improve system voltage these can be resolved by accommodating small scaled de-centralized generating stations in networks, which is known as Distributed Generation (DG).Distributed generation (DG) units reduce electric power losses and hence improve reliability and voltage profile. Determination of appropriate size and location of DG is important to maximize overall system efficiency. In this paper, a method has been presented to determine the appropriate size and proper location of DG in a distribution network in order to reduce the losses and improve the voltage stability in the distributed system. The IEEE 13-Bus and 33-Bus system is simulated in Power World Simulator (PWS) and the voltage magnitude and system losses are analyzed. Simulation result shows that optimal placement and sizing of DG will reduce the system losses and improve the voltage profile within the acceptable limits there by improve voltage stability.