A Study on the Impact of Wind Generation on the Stability of Electromechanical Oscillations
For power system operators, this study quantifies the damping benefits of wind farm integration with supplementary controllers, though the findings are incremental and specific to a two-area network.
This paper investigates the impact of DFIG-based wind farms on electromechanical oscillation stability in a two-area power network, showing up to 933% damping improvement with 25% wind integration and activated control systems.
Wind is becoming an increasingly significant source of energy in modern power generation. Amongst existing technologies, Variable Speed Wind Turbines (VSWT) equipped with Double Fed Induction Generators (DFIG) is widely deployed. Consequently, power systems are now experiencing newer power flow patterns and operating conditions. This paper investigates the impact of a DFIG based Wind Farm (WF) on the stability of electromechanical oscillations. This is achieved by performing modal analysis to evaluate the stability of a two-area power network when subjected to different wind penetration levels and different geographical installed locations. The approach via eigenvalues analysis involves the design of voltage and Supplementary Damping Controllers (SDCs) that contribute to network damping. The effect of Power System Stabilizer (PSS) is also examined for several network conditions. Simulations demonstrate a damping improvement up to 933% when the control systems are activated and the system operates with 25% wind integration.