An Intelligent Mechanism for Enhancing Power Quality in Grid-Tied DFIG Based Wind Energy System Using Simplified Vector-Controlled Statcom
Keywords:
Battery Energy Storage System (BESS), Doubly Fed Induction Generator (DFIG), Power Quality, Reactive Power, Static Compensator (STATCOM)Abstract
Recent years have witnessed substantial growth in harnessing wind energy for power generation, and this trend is anticipated to persist. However, the inherent intermittency of environmental conditions, coupled with the integration of wind power systems into the electrical-grid, poses challenges to power quality. These challenges encompass voltage fluctuations, power factor variations, and insufficient voltage regulation. The injection of wind-generated power into grid significantly impacts the overall efficacy of the distribution system. The Static Compensator (STATCOM) emerges as a promising solution to handle these challenges. This article introduces a simplified vector control method to enhance Power Quality (PQ) in grid-connected wind power plants by integrating a STATCOM. The proposed STATCOM is connected in parallel to a typical 25kV, 30km transmission line coupled to a 2MW Doubly Fed Induction Generator (DFIG). The central principle of this approach revolves around meeting the reactive power demands of both the load and the DFIG. The effectiveness of this proposed technique is assessed through simulations using MATLAB/Simulink software. The simulation outcomes offer valuable insights into the potential of this approach to alleviate PQ issues and enhance the operational efficiency of grid-connected wind energy systems.
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