Assessing the Effect of Grid Connection of Large-Scale Wind Farms on Power System Small-Signal Angular Stability

Authors: Wenjuan Du, Jingtian Bi, Tong Wang, Haifeng Wang

Abstract:

Grid connection of a large-scale wind farm affects power system small-signal angular stability in two aspects. Firstly, connection of the wind farm brings about the change of load flow and configuration of a power system. Secondly, the dynamic interaction is introduced by the wind farm with the synchronous generators (SGs) in the power system. This paper proposes a method to assess the two aspects of the effect of the wind farm on power system small-signal angular stability. The effect of the change of load flow/system configuration brought about by the wind farm can be examined separately by displacing wind farms with constant power sources, then the effect of the dynamic interaction of the wind farm with the SGs can be also computed individually. Thus, a clearer picture and better understanding on the power system small-signal angular stability as affected by grid connection of the large-scale wind farm are provided. In the paper, an example power system with grid connection of a wind farm is presented to demonstrate the proposed approach.

Keywords: power system small-signal angular stability, power system low-frequency oscillations, electromechanical oscillation modes, wind farms, double fed induction generator (DFIG)

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1112071

References:

[1] A. Mendonca and J. A. P. Lopes, “Impact of large scale wind power integration on small signal stability,” Future Power Syst., pp. 1–5, 2005.
[2] G. Tsourakis, B. M. Nomikos, and C. D. Vournas, “Contribution of Doubly Fed Wind Generators to Oscillation Damping,” IEEE Trans. Energy Convers., vol. 24, no. 3, pp. 783-791, Sept. 2009.
[3] J. Quintero, V. Vittal, G. T. Heydt, and H. Zhang, “The Impact of Increased Penetration of Converter Control-Based Generators on Power System Modes of Oscillation,” IEEE Trans. Power Syst., vol. 29, no. 5, pp. 2248-2256, Sep. 2014.
[4] D. Gautam, V. Vittal, and T. Harbour, “Impact of Increased Penetration of DFIG-Based Wind Turbine Generators on Transient and Small Signal Stability of Power Systems,” IEEE Trans. Power Syst., vol. 24, no. 3, pp. 1426-1434, Aug. 2009.
[5] J. G. Slootweg and W. L. Kling, “The impact of large scale wind power generation on power system oscillations,” Elect. Power Syst. Res., vol. 67, no. 1, pp. 9-20, Oct. 2003.
[6] J. J. Sanchez-Gasca, N. W. Miller, and W. W. Price, “A Modal Analysis of a Two-area System with Significant Wind Power Penetration,” in Proc. IEEE Power Eng. Soc. Power Syst. Conf. Expo., 2004, vol. 2, pp. 1148–1152.
[7] E. Vittal, M. O’Malley, and A. Keane, “Rotor Angle Stability with High Penetrations of Wind Generation,” IEEE Trans. Power Syst., vol. 27, no. 1, pp. 353-362, Feb. 2012.
[8] E. Vittal and A. Keane, “Identification of Critical Wind Farm Locations for Improved Stability and System Planning,” IEEE Trans. Power Syst., vol. 28, no. 3, pp. 2950-2958, Aug. 2013.
[9] G. Rogers, Power System Oscillations. Norwell, MA: Kluwer, 2000.
[10] B. C. Lesieutre, E. Scholtz, and G. C. Verghese, “Impedance Matching Controllers to Extinguish Electromechanical Waves in Power Networks,” IEEE Conf. Control Applications, Glasgow, Scotland, Sept. 2002.
[11] S. Chandra, D. F. Gayme and A. Chakrabortty, “Coordinating Wind Farms and Battery Management Systems for Inter-Area Oscillation Damping: A Frequency-Domain Approach,” IEEE Trans. Power Syst., vol. 29, no. 3, pp. 1454-1462, May. 2014.