Voltage stability is the ability of a power system to maintain steady voltages at all buses in the system under normal operating conditions, and after being subjected to a disturbance. If the bus does not maintain the steady state value
it is called as the voltage instability that may result in the form of a progressive fall or rise of voltages at those buses. Power System Load modeling is a technique used to model the power system and essential for voltage stability studies. In this paper, we are trying to analyze modeling parameters of various loads for voltage stability studies. We are performing static load modeling study. The accuracy and correctness of the results are directly related to the load models used in this analysis. The method is analyzed using continuation power flow routine. FACTS technology with a combination of Cat Swarm Optimization heuristic approach is applied to give a solution for the problem of instability due to various load models. The effectiveness of the proposed method is demonstrated through quantitative studies on standard IEEE 14 bus system.