Supplementary Controller Design for SSR Damping in a Series-Compensated DFIG-Based Wind Farm

Zaijun Wu, Chanxia Zhu and Minqiang Hu
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Zaijun Wu: School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing, Jiangsu 210096, China
Chanxia Zhu: School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing, Jiangsu 210096, China
Minqiang Hu: School of Electrical Engineering, Southeast University, No. 2 Sipailou, Nanjing, Jiangsu 210096, China

Energies, 2012, vol. 5, issue 11, 1-16

Abstract: The increasing presence of wind power in power systems will likely drive the integration of large wind farms with electrical networks that are series-compensated to sustain large power flows. This may potentially lead to subsynchronous resonance (SSR) issues. In this paper, a supplementary controller on the grid-side converter (GSC) control loop is designed to mitigate SSR for wind power systems based on doubly fed induction generators (DFIGs) with back-to-back converters. Different supplementary controller feedback signals and modulated-voltage injecting points are proposed and compared based on modal analysis and verified through root locus analysis to identify the optimal feedback signal and the most effective control location for SSR damping. The validity and effectiveness of the proposed supplemental control are demonstrated on the IEEE first benchmark model for computer simulations of SSR by means of time domain simulation analysis using Matlab/Simulink.

Keywords: doubly fed induction generator (DFIG); subsynchronous resonance (SSR); damping; modal analysis (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: 2012
References: View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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