Comparative analysis of the effects of renewable energy integration on the utility grid system

Abstract

There is an energy crisis in Pakistan due to the gap between demand and supply of electrical energy. This gap between demand and supply of electrical energy is hampering its economic development. In order to overcome this issue there is a need to increase the generation capacity of the country by integrating renewable energy resources in the system. In this paper the working and functioning of H-11 grid system is tested using the power world simulator software. First the grid system is modeled by incorporating the values of the power transformers and the transmission system of the grid. When the grid system is simulated the grid is tested for the four different scenarios of the Distributed Renewable Energy Generation integration. Our simulations show that Distributed Renewable Energy Generation (DREG) improves the voltage profile, reduce feeder losses and increases the reliability of the system by providing power near the consumer at the distribution level. Simulation shows that the optimal placement of DREG is at bus no 7, in case of 1MW (25% of the total feeder load). Simulation results and the comparative analysis of the respective DREG integration show that the H-11 grid is a good option for the integration of DREG.