Frequency Response Improvement in RE Integrated Low Inertia Power Systems using Synchronous Condensers

The gradual phasing out of conventional power plants by the increasing integration of Renewable Energy Sources (RES) introduces various challenges to secure and stable grid operation. Inadequate frequency response following a significant disturbance is one of the critical concerns for the operation of RES-dominated power systems. Diminishing inertia due to the RES-driven displacement of conventional generators consequently jeopardizes the frequency stability of the power system. However, synchronous condensers, existing, refurbished from retiring power plants, or newly installed ones, have a significant potential to support RES-dominated power systems. This paper examines the role of synchronous condensers as a potential solution in enhancing the frequency performance of power systems with high shares of large-scale solar PV generation. Several case studies are carried out on IEEE standard test systems and real-life Gujarat state power system for various system scenarios using DIgSILENT PowerFactory.