Advanced SearchSearch Tips
Stepwise Inertial Control of a Doubly-Fed Induction Generator to Prevent a Second Frequency Dip
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Stepwise Inertial Control of a Doubly-Fed Induction Generator to Prevent a Second Frequency Dip
Kang, Mose; Lee, Jinsik; Hur, Kyeon; Park, Sang Ho; Choy, Youngdo; Kang, Yong Cheol;
  PDF(new window)
To arrest a frequency nadir, a stepwise inertial control (SIC) scheme generates a constant active power reference signal of a wind turbine generator (WTG) immediately after a disturbance and maintains it for the predetermined time. From that point, however, the reference of a WTG abruptly decreases to restore the rotor speed for the predefined period. The abrupt decrease of WTG output power will inevitably cause a second frequency dip. In this paper, we propose a modified SIC scheme of a doubly-fed induction generator (DFIG) that can prevent a second frequency dip. A reference value of the modified SIC scheme consists of a reference for the maximum power point tracking control and a constant value. The former is set to be proportional to the cube of the rotor speed; the latter is determined so that the rotor speed does not reach the minimum operating limit by considering the mechanical power curve of a DFIG. The performance of the modified SIC was investigated for a 100 MW aggregated DFIG-based wind power plant under various wind conditions using an EMTP-RV simulator. The results show that the proposed SIC scheme significantly increases the frequency nadir without causing a second frequency dip.
Stepwise inertial control;Second frequency dip;Minimum rotor speed;Doubly-fed induction generator;
 Cited by
Improved inertial control for permanent magnet synchronous generator wind turbine generators, IET Renewable Power Generation, 2016  crossref(new windwow)
T. Ackermann, Wind Power in Power System, 2nd Edition, England, John Wiley & Sons, Ltd, 2012.

2014 half-year report, The World Wind Energy Association, Jun. 2014.

Global wind report: annual market update 2012, Global Wind Energy Council, Apr. 2013.

S. -E. Lee, D. -J. Won, and I. -Y. Chung, “Operation scheme for a wind farm to mitigate output power variation,” Journal of Electrical Engineering & Technology, vol. 7, no. 6, 2012, pp. 869-875. crossref(new window)

O. Anaya-lara, N. Jenkins, J. Ekanayake, P. Cartwright, and M. Hughes, Wind Energy Generation Modeling and Control, John Wiley & Sons, Ltd, 2009.

J. Ekanayake and N. Jenkins, “Comparison of the response of doubly fed and fixed-speed induction generator wind turbine to changes in network frequency”, IEEE Transaction on Energy conversion, vol. 19, no. 4, 2004, pp. 800-802. crossref(new window)

J. Morren, S.Haan, W. L. Kling, and J. A. Ferreira, “Wind turbines emulating inertia and supporting primary frequency control”, IEEE Transaction on Power systems, vol. 21, no. 1, 2006, pp. 433-434. crossref(new window)

J. Lee, J. Kim, Y.-H. Kim, Y.-H. Chun, S.-H. Lee, J.-K. Seok, and Y. C. Kang, “Rotor speed-based droop of a wind generator in a wind power plant for the virtual inertial control,” Journal of Electrical Engineering & Technology, vol. 8, no. 5, 2013, pp. 742-749.

H. Lee, J. Kim, D. Hur, and Y. C. Kang, “Inertial control of a DFIG-based wind power plant using the maximum rate of change of frequency and the frequency deviation,” Journal of Electrical Engineering & Technology, vol. 10, no. 2, 2015, pp. 496-503. crossref(new window)

R. L. Josephine and S. Suja, “Estimating PMSG wind turbines by inertia and droop control schemes with intelligent fuzzy controller in Indian development,” Journal of Electrical Engineering & Technology, vol. 9, no. 4, 2014, pp. 1196-1201. crossref(new window)

N. R. Ullah, T. Thiringer, and D. Karlsson, variable speed wind turbines- potential and applications”, IEEE Transaction on Power system, vol. 23, no. 2, 2008, pp. 601-612. crossref(new window)

B. Shen, B. Mwinyiwiwa, Y. Zhang, and B. Ooi, “Sensorless Maximum Power Point Tracking of Wind by DFIG Using Rotor Position Phase Lock Loop,” IEEE Transaction on Power Electronics, vol. 24, no. 4, 2009, pp. 942-951. crossref(new window)