Control of an SSSC for oscillation damping of power systems with wind turbine generators

The increased adoption of wind generation capacity into worldwide electric power systems presents many challenges due to the intermittent nature of this energy resource. The equipment for flexible ac transmission systems (FACTS) are the focus of this paper with the goal of overcoming the difficulties of achieving improved electric power system reliability with large penetration of wind generation. FACTS equipment can also contribute towards reducing the cost of power system expansions by better utilizing existing assets to defer future infrastructure expenses. In addition, FACTS equipment can minimize issues concerning adequate damping of power oscillations, transmission capacities, and frequency regulation. The paper presents research results on improving power oscillation damping and increased transmission capacities under dynamic conditions using static synchronous series compensator (SSSC) technology. Detailed analysis and simulation of these factors are considered under normal and faulted in the power system network. Results of this investigation help in understanding the improvements that can be achieved by incorporating SSSC equipment in systems having large participation factors associated with wind turbine generators.