The work presented in this paper shows an impact of generated transformer (GT) tap position on reactive power output of generators. Practical working system of Rajasthan state have been taken that consist of two 765 kV GSS, twenty one 400 kV GSS and seven thermal plants. The study and simulations are carried out in PSSE software. Simulation model comprises of 85 buses, 62 transmission lines and 86 transformers. Total system load is 5656.60 MW & 907.02 MVAR. Five cases have been simulated considering the effect of GT tap position on generator MVAR loading. From simulation studies, it is revealed that generator MVAR loading changes significantly with change in transformer tap positions at generating station.
Generator MVAR loading, generator transformer tap setting, impact of generator transformer tap position, load flow studies