Clustering and Equivalent Method for Renewable Power Plants Based on Dynamic Active Power Response Characteristics

Abstract

How to cluster generators efficiently and reasonably is the prime issue for dynamic equivalent modeling of wind and photovoltaic (PV) power plants. In this paper, based on the transient active power response characteristics, a generic dynamic clustering method for wind farms and photovoltaic power plants was proposed. Firstly, the transient response characteristics of these generators working on various operating points were simulated under three-phase short circuit faults at the point of connection and thus the initial clustering factors were derived. Secondly, the complementary aggregated indexes were obtained and analyzed through the typical distributions of operating cases. Finally, various case studies have been conducted to verify the proposed method and the simulation results have shown that the proposed method has good adaptability to different operating points and fault locations.