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Probabilistic load flow computation of a power system containing wind farms using the method of combined cumulants and gram-charlier expansion

Yuan, Yue and Zhou, Jianhua and Ju, Ping and Feuchtwang, Julian (2011) Probabilistic load flow computation of a power system containing wind farms using the method of combined cumulants and gram-charlier expansion. IET Renewable Power Generation, 5 (6). pp. 448-454. ISSN 1752-1416

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Abstract

Load flow is highly uncertain with the large-scale integration of wind power. It is unrealistic to adopt traditional deterministic load flow calculation for system planning and operation. A method is proposed in this study combining cumulants and Gram-Charlier expansion to calculate probabilistic load flow (PLF) of power system containing large-scale wind power. It has significantly reduced the computational time compared to Monte Carlo methods while maintaining a high degree of accuracy. The method was found quite suitable for the PLF calculation of power system with large-scale wind power injected.