Technical Feasibility of Power System Stabiliser (PSS) Compliance in Engine Power Plants
13 April 2026
A Power System Stabiliser (PSS) enhances grid stability by damping oscillations, with performance influenced by system inertia and oscillation characteristics. Engine power plants, characterised by lower inertia and inherently well-damped dynamic behaviour, already exhibit stable operating responses with minimal oscillatory activity. As a result, the impact of PSS functionality is inherently less pronounced and difficult to demonstrate using conventional testing methods.
In this position paper, EUGINE highlights that standard PSS testing methodologies are not technically feasible for such technologies, given their distinct dynamic characteristics compared to larger generating units.
EUGINE therefore recommends that the upcoming Network Code on Requirements for Grid Connection of Generators (NC RfG) be amended to reflect technology-specific behaviours, including adapted testing requirements and, where necessary, clear interim derogation pathways
