Determination of Optimal Location and Size of Static VAR Compensator in a Hybrid Wind and Solar Power System

This paper proposes an efficient optimization approach to determine the optimal placement and size of Static VAR Compensator (SVC) in a hybrid power system. The hybrid power system consists of conventional thermal generators, wind farms and solar photovoltaic (PV) modules. In this paper, the optimal placement and size of SVC is determined by considering the voltage deviations minimizations and voltage stability enhancement index (VSEI/L-index) as the objective functions. The uncertainty of wind energy generator is handled using the Weibull distribution function and the solar PV uncertainty is handled by using the bi-modal Weibull distribution function. The proposed optimization model is solved using the efficient evolutionary algorithm, which reduces the execution time significantly. The optimal location obtained with the proposed efficient approach is also verified using the conventional V-Q sensitivity analysis. The suitability and the potential of the proposed approach is examined on IEEE 14, 30 and 118 bus test systems.