Optimal Design of PSS for the Mitigation of Electro-Mechanical Mode Oscillations using Eva Approach with the Impact of Wind Energy System

Small-signal stability analysis mainly deals with a study of electromechanical oscillations-related performance of the system about an operating point when the system is subjected to sufficiently small magnitude of disturbance that will lead to non-linear behavior of the system. Thus, this study is mainly concerned with the ability of the power system to maintain synchronism under small disturbances and transient disturbances. The disturbances are considered to be sufficiently small that linearization of system equations is possible for analysis purposes . This permits linear system theory to be applied for system analysis even though the system is inherently non-linear.This paper proposes a method of case study analysis to investigate the impact of Doubly fed Induction generator in 5 machine 14 bus system with automatic voltage regulator and power system stabilizer using Power system analysis toolbox. It can directly calculate the Eigen values associated with the large-scale power system for small-signal stability analysis. Also, using Time domain simulation ,transient stability analysis is done and the graph of speed deviation versus time is plotted.