A case study for loss reduction in distribution networks using shunt capacitors

Abstract

The Paper presents study of 11 kV distribution network of Jaipur city, with shunt capacitor placement at 11kV voltage level. In the current scenario utilities are managing the expansion of distribution network without planning the shunt capacitors. This paper provides an analysis of distribution losses in Jaipur city by modeling the present scenario of distribution network operating without shunt capacitor banks. The model of 260 bus network is designed and reactive power requirement for constant power load are calculated from load flow studies by using Mi-power Software. The proposed model is designed with capacitor installation, calculating the reactive power requirements of real time existing system. Comparative studies have been carried with updated system parameters for power flow. The effect of capacitors on network lines, transformers, Substation power factor & system loadings have been researched both with & without Capacitor Bank over the Test system. An overall financial analysis detailing annual cost & energy saving is also presented. Lastly capacity utilization factor suggesting for optimal utilization of capacitor banks with case studies, are followed by results with simulated changes in swing bus voltage have been addressed.