Application of STATCOM-supercapacitor for low-voltage ride-through capability in DFIG-based wind farm

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Dosoglu M. K. , Arsoy A. , Guvenc U.

NEURAL COMPUTING & APPLICATIONS, cilt.28, ss.2665-2674, 2017 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 28
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1007/s00521-016-2219-6
  • Sayfa Sayıları: ss.2665-2674


Low-voltage problem emerges in cases of symmetrical and asymmetrical fault in power systems. This problem can be solved out by ensuring low-voltage ride-through capability of wind power plants, through a static synchronous compensator (STATCOM). The purpose of this study is to reveal that the system can be recovered well by inserting a STATCOM with energy storage to a bus where a double-fed induction generator (DFIG)-based wind farm has been connected, so the bus voltage is maintained within desired limits during a fault. Moreover, a supercapacitor is used as an energy storage element. Modeling of the DFIG and STATCOM along with the nonlinear supercapacitor was carried out in a MATLAB/Simulink environment. The behaviors of the system under three- and two-phase faults have been compared with and without STATCOM-supercapacitor, by observing the parameters of DFIG output voltage, active power, speed, electrical torque variations, and d-q axis stator current variations. It was found that the system became stable in a short time when the STATCOM-supercapacitor was incorporated into the full-order modeled DFIG.