Effect of Large-Scale Wind Farm on Transient Stability

Faced with the sever situation about the environment and the fuel under the earth, people are now resorting to clean energy, especially the wind power because of their many advantages, to meet their ever increasing demand for power electricity. Therefore, it is very imperative to understand the new aspects that the integration of wind power brought to the conventional system, especially the aspects of the transient stability and the maximum amount of wind power that can be utilized to a given system. By simulation, this paper will give analysis in the profile of the transient stability associated with wind power and the voltage response of the thermal plants surrounding the wind farm during critical periods. This paper is also extended to include a case-based analysis on the wind power penetration limit from the perspective of different network structures. Simulations demonstrated that the integration of wind power provide a good damping performance on the voltage oscillations of the thermal plant and wind power penetration level varies significantly according to different network structures. All studies are conducted on some area of a practically power system in China.