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There are some special characteristics of Chinese wind power, which make its dispatch more challenging. This paper introduces the framework and four key supporting technologies of the proposed wind power dispatch system, which has been put into operation in the Northwest Grid of China. The four key supporting technologies are hybrid real-time/quasi-real-time data communication, wind power closed-loop control, evaluation of wind power integration capability, and wind power operating data analysis based on probability statistic. Performance of the proposed system in the Northwest Grid of China has demonstrated its validity.