An Anti-Fluctuation Compensator Design and Its Control Strategy for Wind Farm System

Feng-Chang Gu and Hung-Cheng Chen
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Feng-Chang Gu: Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41107, Taiwan
Hung-Cheng Chen: Department of Electrical Engineering, National Chin-Yi University of Technology, Taichung 41107, Taiwan

Energies, 2021, vol. 14, issue 19, 1-16

Abstract: Large-scale wind farms in commercial operations have demonstrated growing influence on the stability of an electricity network and the power quality thereof. Variations in the output power of large-scale wind farms cause voltage fluctuations in the corresponding electrical networks. To achieve low-voltage ride-through capability in a doubly fed induction generator (DFIG) during a fault event, this study proposes a real-time reactive power control strategy for effective DFIG application and a static synchronous compensator (STATCOM) for reactive power compensation. Mathematic models were developed for the DFIG and STATCOM, followed by the development of an indirect control scheme for the STATCOM based on decoupling dual-loop current control. Moreover, a real-world case study on a commercial wind farm comprising 23 DFIGs was conducted. The voltage regulation performance of the proposed reactive power control scheme against a fault event was also simulated. The simulation results revealed that enhanced fault ride-through capability and prompt recovery of the output voltage provided by a wind turbine generator could be achieved using the DFIG along with the STATCOM in the event of a three-phase short-circuit fault.

Keywords: doubly-fed induction generator; decoupling dual-loop control; low voltage ride-through; static synchronous compensator; wind turbine generator; wind farm (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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