Real Time Voltage Instability Detection in DFIG Based Wind Integrated Grid with Dynamic Components

Abstract

Real-time voltage instability detection in the renewable integrated grid is proposed in this work. The present work is the augmented version of preclusive voltage instability detection index (SQLVIDI), in the companionship of the doubly-fed induction generator (DFIG) based wind energy conversion system (WECS). The time-domain simulated results show that the SQLVIDI index has a good capability to sense the impending voltage instability in the presence of a renewable integrated grid. The performance of this index is tested in New England (NE) 39-bus system by considering all the dynamic controls of the synchronous generators and DFIG with different loading conditions. The performance of this index with different load models has also been tested to find the suitable location of DFIG under-voltage stability point of view.