Synchronous Rotating Equipment as Key Component for Energy System Transformation

Inhalt:
This article exhibits how the challenges of present and future electrical grids can be solved by means of rotating machines. The central role is played by synchronous condensers, which provide general ancillary services such as reactive power regulation, short-circuit power, and rotating inertia for grid stabilization. Furthermore, synchronous condensers can be extended by large flywheels to further increase the mass moment of inertia and consequently lower fast grid frequency fluctuations (RoCoFs) by means of inherent inertia response. In addition, synchronous condensers provide the unique property of acting as an electromechanical energy converter to prime movers, such as hydrogen fueled gas turbines. This allows a secondary and tertiary frequency control to enable residual load management.