The power output characteristics of Jiuquan wind power base and its reactive power compensation

The second phase of Jiuquan wind power base in China has been built with 3GW of first batch. This paper deliberately researches its power output characteristics based on the observation data in 2012, which provide technical reference for further work of power grid planning. Moreover, on the basis of northwest China grid data package in Power System Analysis Software Package (PSASP), this paper compares the voltage control effect under different reactive power compensation schemes after the second phase wind farms integrated. Analysis results indicate that wind power output characteristics in Jiuquan are obviously random and low. The power output change rate is low as well. As for reactive power compensation strategies, centralized compensation at low voltage side is better than dispersed compensation to control system voltage. Finally, choosing reactive power compensation devices and reactive power allocation schemes rationally can maintain the system voltage both effectively and economically.