Comparative Evaluation of Advanced FACTS Technologies for Improving and Damping Power Oscillation in Electric Power Systems Integrating Wind Energy

Power fluctuations are one of the biggest challenges facing the exploitation of electric power grids with a high level of renewable energy integration. In the presence of some perturbations such as short-circuit faults or significant load variations, these oscillations degrade the system’s dynamic performance and affect its transient stability. To improve electric grid behavior under such conditions, FACTS (Flexible AC Transmission System) devices are frequently used to control power flows and enhance stability.

In this paper, a comparative study is carried out between three FACTS devices: the Static Synchronous Series Compensator (SSSC), the Static Synchronous Compensator (STATCOM) and the Unified Power Flow Controller (UPFC). The analysis is based on a power system comprising multiple machines, including a wind farm based on a double-fed induction generator (DFIG). The various components are simulated and evaluated under different fault scenarios, including three-phase faults and variations in power flow.

The simulation is carried out with focus on power oscillation damping, voltage regulation, transient stability, and the response of active and reactive power. The results of this study make it possible to identify which FACTS DEVICES offer the best dynamic performance and the highest level of stability for electricity networks with significant wind power generation.