Loss Reduction of Rajasthan Power System with Distributed Generation in Transmission Network

In present power system structure, large capacity thermal power plants have been installed at remote locations from load centers. The power from generation to load centers is transmitted through long EHV transmission lines & number of EHV substations of various voltage levels are required for step down the power. This extended EHV corridor have acquired large chunk of land & raised the issues related to power system angle & voltage stability, low reliability, high expenses in terms of repair & maintenance. The growth of Distributed Generation in transmission network is the most essential drift in the power trade. In this paper impact of distributed generation in transmission network has been studied. Rajasthan power system has been considered to carry out the studies. Rajasthan power system has been modeled in MiPower software. Rajasthan Power System have total 748 buses comprising 2 nos. 765 KV, 35 nos. 400 KV, 145 nos. 220 KV, 503 nos. 132 KV and 63 nos. generator buses and load of 10500 MW. 80 MW capacity new thermal generator unit is placed at generation deficit and load rich pocket of Rajasthan power system. Effect of distributed generation on transmission losses, network voltage profile and lines & transformers loading have been analyzed.