Probabilistic Load Flow Analysis for Power System Containing Wind Farms

The power grid containing wind farms is analyzed by AC probabilistic load flow. By using the method of the combination concept of Cumulants and Gram-Charlier series expansion theory, the DC probabilistic model is extended into AC probabilistic model, in which a three-parameter Weibull distribution is adopted to describe the random variation of wind speed, meanwhile the asynchronous wind turbine generator is treated as PQ node, then a probabilistic model of wind turbine generator is built. Based on the built model the calculation of IEEE 118-bus system is carried out, and then the probabilistic distributions of nodal voltages as well as the probabilistic distribution of branch load flow are obtained. The variation of nodal voltages and branch load flow before and after the connection of wind farms with power grid is compared.

[1]  Li Zuohong.  Modeling of Large-Scale Wind Farms in the Probabilistic Power Flow Analysis Considering Wake Effects , 2008 .

[2]  J. Cidras,et al.  Modeling of wind farms in the load flow analysis , 2000 .

[3]  Zhang Xian.  PROBABILISTIC LOAD FLOW METHOD CONSIDERING BRANCH OUTAGES , 2005 .

[4]  Chen Kai.  Probabilistic Power Flow Containing Distributed Generation in Distribution System , 2005 .

[5]  Z. Hu,et al.  A probabilistic load flow method considering branch outages , 2006, IEEE Transactions on Power Systems.

[6]  Zhang Li-jun.  POWER FLOW ANALYSIS IN ELECTRICAL POWER NETWORKS INCLUDING WIND FARMS , 2005 .

[7]  A. M. Leite da Silva,et al.  Probabilistic load flow by a multilinear simulation algorithm , 1990 .

[8]  Zhaohong Bie,et al.  Studies on voltage fluctuation in the integration of wind power plants using probabilistic load flow , 2008, 2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century.

[9]  Lei Dong,et al.  Improvement of Probabilistic Load Flow to Consider Network Configuration Uncertainties , 2009, 2009 Asia-Pacific Power and Energy Engineering Conference.

[10]  Barbara Borkowska,et al.  Probabilistic Load Flow , 1974 .

[11]  Ronald N. Allan,et al.  Probabilistic techniques in AC load flow analysis , 1977 .

[12]  Wen Bu-ying.  Power flow calculation for power systems including wind farms , 2008 .

[13]  R. Ramakumar,et al.  An approach to assess the performance of utility-interactive wind electric conversion systems , 1991 .

[14]  S.T. Lee,et al.  Probabilistic load flow computation using the method of combined cumulants and Gram-Charlier expansion , 2004, IEEE Transactions on Power Systems.