| Abstract |
This paper introduces a state-space model (SSM) based framework to analyze the small-signal stability of large-scale photovoltaic (PV) parks. An improved SSM of PV inverters is proposed considering an accurate impact of the grid synchronization. Different methods are implemented to investigate the system stability, including eigenvalue distribution, participation factor and a proposed damping-resonance analysis. Based on that, the reason of an unstable resonance can be identified and the operation and control design can be optimized following a systematic approach. |
