Stability Investigation of Large-Scale PV Parks with Eigenvalue-Based Method

European Conference on Power Electronics and Applications, pp. 1–10

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.

Authors 4

1. Zhiqing Yang Aachen Institute for Power Generation and Storage Systems (PGS) E.ON Energy Research Center

   RWTH Aachen University

   Affiliation as printed

   Institute for Power Generation and Storage Systems, E.ON Energy Research Center, RWTH Aachen University, Aachen, Germany

2. Christian Bendfeld Aachen Institute for Power Generation and Storage Systems (PGS) E.ON Energy Research Center

   RWTH Aachen University

   Affiliation as printed

   Institute for Power Generation and Storage Systems, E.ON Energy Research Center, RWTH Aachen University, Aachen, Germany

3. Benedict J. Mortimer Aachen Institute for Power Generation and Storage Systems (PGS) E.ON Energy Research Center

   RWTH Aachen University

   Affiliation as printed

   Institute for Power Generation and Storage Systems, E.ON Energy Research Center, RWTH Aachen University, Aachen, Germany

4. Rik W. De Doncker Aachen Institute for Power Generation and Storage Systems (PGS) E.ON Energy Research Center

   RWTH Aachen University

   Affiliation as printed

   Institute for Power Generation and Storage Systems, E.ON Energy Research Center, RWTH Aachen University, Aachen, Germany