Conference Proceedings

Holistic time-varying small signal stability assessment in PV-rich power systems

WJ Nacmanson, D Jaglal, LF Ochoa

2019 IEEE Milan PowerTech | IEEE | Published : 2019

Abstract

Residential photovoltaic (PV) adoption has seen continued growth over the past decade. Of concern is the impact on the dynamic performance of the power system resulting from the displacement of rotating mass, where inadequate damping can potentially lead to the damage of online generating units and other ramifications. Here, a holistic approach is proposed to assess small signal stability in time and quantify the effects on damping when PV displaces synchronous generation. A unit commitment is used to determine the true displacement from net demand changes throughout the day. The oscillatory modes associated with units remaining online are tracked using participation factors to identify whic..

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