Analysis of synthetic inertia using wind turbines for frequency stability in power systems

Abstract: With the large expansion of renewable energy sources such as wind- and solar, the stability and quality of electrical power can be affected. The transition towards large-scale wind power offers many opportunities to maintain stability by using power converters to create synthetic inertia. At request of Sweco Energy, this thesis shows the effect and importance of synthetic inertia used in wind power to maintain a stable frequency. The importance of stability in power systems was proved by creating a simulation model in DIgSILENT PowerFactory© where synthetic inertia played an important role in decreasing frequency deviations from disturbances in the power system. The simulation gives a representation of how synthetic inertia can affect real life power systems and how the future of green power sources come with more solutions than issues. Society is forever changing with large environmental goals to provide a brighter tomorrow for the coming generations, and the hope of this thesis is to come even closer to reaching these goals.