The Application of a TCSC Controller to Improve the Stability of a Power System With High Penetration of Renewable Energy

Abstract: The goal of this project is to examine how a higher penetration of power electronics-basedforms of power production affects system stability and damping. The project covers howpower system stability can be improved by using a Thyristor Controlled Series Capacitor(TCSC) with Power Oscillation Damping (POD). In order to reach these aims, a smallKundur's two-area power system is analysed. A fault is implemented in a system with foursynchronous generators, this is done using the simulation software SIMPOW. By replacingportions of the synchronously generated power with power electronics based generation, theimpacts of renewable energy sources on power system stability can be evaluated. The resultsof the project show that introducing power electronics based generation to a system generallyworsens the stability of said system. Furthermore, it is discovered that the oscillations in thesystem response can be efficiently damped by using a TCSC. On the other hand, when acertain amount of renewable energy is integrated into the system the method used in thisproject is no longer sufficient.