Reactive Power Planning of Power System Using Trajectory Sensitivity Index

Suitable placement of static VAR systems has an imperative role in the reactive power planning of any network. This paper presents the outcome of an investigation into the performance of trajectory sensitivity index in dynamic reactive power planning of electric transmission systems. In this study, trajectory sensitivity indices of the busbars of the IEEE 9 bus system are obtained, and they are provided with reactive power support successively. Simulation results are obtained under a post-fault scenario where voltage recovery times under different loading conditions are examined. The effectiveness of the trajectory sensitivity index approach in reactive power planning of a power system is analyzed.