Power Oscillation Damping in Hybrid Power Plants: Stability Analysis and Experimental Validation
Translated title
Power Oscillation Damping in Hybrid Power Plants
Authors
Term
4. term
Education
Publication year
2025
Submitted on
2025-05-27
Pages
136
Abstract
As power systems transition away from synchronous generators to inverter-based resources, concerns about stability and insufficient system damping continue to grow. This thesis investigates the implementation of power oscillation damping (POD) in hybrid power plants composed of wind turbines, photovoltaic panels, and battery energy storage systems. Two control approaches, POD-P and POD-Q,based on active and reactive power deviations respectively, were designed using lead-lag compensators. A state-space modelling framework was developed to analyse system stability and guide the tuning of these controllers. The models were validated through time-domain simulations and experimental tests using a dSPACE hardware-in-the-loop setup. While both POD-P and POD-Q reduced oscillation amplitudes under specific conditions, the results highlighted the limitations of using static compensators in dynamic grid environments. POD-P, in particular, was sensitive to signal disturbances, requiring the addition of a low-pass filter to be practically viable. The findings indicate that while passive POD strategies can offer some improvement, more adaptive control approaches may be necessary to meet evolving grid stability requirements.
Keywords
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