DOI:10.35833/MPCE.2021.000092 |
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A Cooperative Approach of Frequency Regulation Through Virtual Inertia Control and Enhancement of Low Voltage Ride-through in DFIG-based Wind Farm |
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Net amount: 434 |
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Author:
Preeti Verma,Seethalekshmi K.,Bharti Dwivedi
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Author Affiliation:
Department of Electrical Engineering, Institute of Engineering and Technology, Lucknow 226021, Uttar Pradesh, India, which is a constituent institute of Dr. A. P. J. Abdul Kalam Technical University, Lucknow, Uttar Pradesh (U. P.), India
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Abstract: |
Doubly-fed induction generator (DFIG)-based wind farms (WFs) are interfaced with power electronic converters. Such interfaces are attributed to the low inertia generated in the WFs under high penetration and that becomes prevalent in a fault scenario. Therefore, transient stability enhancement along with frequency stability in DFIG-based WFs is a major concern in the present scenario. In this paper, a cooperative approach consisting of virtual inertia control (VIC) and a modified grid-side converter (GSC) approach for low voltage ride-through (LVRT) is proposed to achieve fault ride-through (FRT) capabilities as per the grid code requirements (GCRs) while providing frequency support to the grid through a synthetic inertia. The proposed approach provides LVRT and reactive power compensation in the system. The participation of the VIC in a rotor-side converter (RSC) provides frequency support to the DFIG-based WFs. The combined approach supports active power compensation and provides sufficient kinetic energy support to the system in a contingency scenario. Simulation studies are carried out in MATLAB/Simulink environment for symmetrical and unsymmetrical faults. The superiority of the proposed scheme is demonstrated through analysis of the performance of the scheme and that of a series resonance bridge-type fault current limiter (SR-BFCL). |
Keywords: |
Virtual inertia controller (VIC) ; doubly-fed induction generator (DFIG) ; fault ride-through (FRT) capability ; wind farm (WF) ; fault current limiter (FCL). |
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Received:February 01, 2021
Online Time:2022/11/21 |
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