Power Losses Estimation in Distribution Network (IEEE-69bus) with Distributed Generation Using Second Order Power Flow Sensitivity Method

Abstract

The demand for electricity is increasing day by day and the generation of power is not meeting the demand and also the losses experienced in transmission and distribution are the main causes of load shedding in India. We can reduce or counteract the losses by generating more power in conventional generating stations which needs huge investment, or by incorporating Distributed generators in the Distribution Network with very less investment which generates power of few Mega Watts . Distribution network which is the last stage of delivery of electricity to consumers experiences losses which can be minimized by local Distributed generators (DG). Distributed Generation also called as decentralized generation, on site generation are incorporated in the Distribution Network to eliminate the interdependencies on the utility and also for the continuous supply of power which boosts the efficiency in the delivery of power to the consumers. The Distributed Generators incorporated are time varying where repetitive power flow simulations are done to calculate the power losses which is time consuming and makes the calculation complex. Optimal placement of DG plays a significant role in minimizing power losses in Distribution systems. In this paper the total power losses of the distribution network (IEEE-69 bus) for any new DG condition is estimated by a single power flow method called Second order power flow sensitivities which helps in modeling the non linear nature of power losses. Therefore this method speeds up the solution of power losses reduction, DG allocation problems where several DG configurations are taken into consideration.