Distribution System Power Loss Reduction through Distributed Generation

Pakistan power sector is facing energy crises mainly caused by generation demand gap. New power generation capacities are proposed to meet generation demand. Transmission and distribution network expansions are planned. Distributed Generation (DG) is small generation employing renewable energy resources and directly connected to distribution system. DGs are environmental friendly and offers advantages in terms of small construction time and eliminate need of complex transmission and distribution network between generation and utilization. DGs will also have impacts on voltage drop, stability and power losses of distribution system. In this research work, one of 11kV radial distribution feeder is analyzed through simulation to observe impacts of different DG technologies in terms of power loss reduction. Wind generation using synchronous generator results in maximum power loss reduction due to their capabilities of injecting reactive power. Induction generator require reactive power from grid and therefore result in minimum power loss reduction. PV cells only produce active power and results in moderate reduction in power losses.