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Cai Zexiang Shen Hong Wang Mingqiu (College of Electrical Power, South China Univ. of Tech., Guangzhou 510640)  
A direct method for frequency stability assessment of power systems is proposed in this paper, which is based on the latest Jacobbi Matrix of the power flow calculation. The method can directly calculate the final system frequency after the last switching without step_by_step integra1, and the system frequency stability can be determined. The proposed method has been used in the simulations of a 68_bus power system to test its speed and accuracy, and the results are satisfactory.
【Fund】: 国家自然科学基金! ( 5 94770 0 8)
【CateGory Index】: TM712
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