Voltage Profile Improvement, Transmission Line Loss Reduction in Rajasthan Power System: A Case Study

The complexity is increasing day by day with the advancement of buses in interconnected power system. The complexity of the power system can easily handle by analyzing the performance of the transmission system by using load flow study. The real and reactive power losses are largely affected at the transmission level. This paper presents case study of real time system operation to reduce losses and improve the voltage profile 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. 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