Journal of Northeastern University Natural Science ›› 2016, Vol. 37 ›› Issue (1): 19-23.DOI: 10.12068/j.issn.1005-3026.2016.01.005

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The Small Signal Stability for Transmitting Wind Power Bundled with Thermal Power

CAO Xi-min, LIU Tian-qi, LI Xing-yuan,LI Cong-shan   

  1. School of Electric Engineering and Information, Sichuan University, Chengdu 610065, China.
  • Received:2014-04-30 Revised:2014-04-30 Online:2016-01-15 Published:2016-01-08
  • Contact: LIU Tian-qi
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Abstract: In order to research the small signal stability of wind-thermal bundled transmission system, the small perturbation analysis model of wind-thermal bundled transmission system was established, which included wind turbine, pitch angle control system, converter control system, the induction generator. The small signal stability analysis method of the wind-thermal bundled system was introduced in detail. The system eigenvalues of wind-thermal bundled transmission systems with different wind power access, wind power output level, wind-thermal allocation ratio and delivery line length were calculated under the simulation system of wind-thermal bundled transmission established. The simulation results showed that the weaker the relationship between wind power and the power system was, the worse the small signal stability of wind power was. In addition, the small signal stability of the system would be directly impacted by the wind power output level and wind-thermal allocation ratio.

Key words: wind power, thermal power, allocation ratio, small signal stability, small perturbation model

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