Loss reduction & reactive power support in Rajasthan power system: A case study

This paper presents case study of real time system operation to reduce losses with optimum utilization of existing transmission system elements. West-North part of Rajasthan power system having one 400 kV GSS, five 220 kV GSS and nineteen 132 kV GSS have been selected to carry out case study and simulated in PSSE software. Simulation model consists of 55 buses, 34 transmission lines, 66 transformers and 34 capacitor banks. Total system load is 594.95 MW & 325.56 MVAR. Eight cases have been simulated considering the effect of transformer tap position, closing of opened transmission lines and shunt capacitors. From simulation studies it is found out that transmission losses are reduced by 50.36 % in addition to improve network voltage profile and reduce loading.