Reactive Power Injection Strategies For Wind Energy Regarding Its Statistical Nature

This work studies reactive power strategies for wind turbines and wind farms. Previous Spanish regulation stated unity power factor (P.F.) as target. New regulation introduced in RD 436/2004 rewarded up to 8% with P.F. < 0,95 inductive (on low-load hours) and P.F. < 0,95 capacitive (on peak hours). A better utilization of the infrastructure can be attained considering the reactive power generation availability even in calm periods –depending on the reactive power compensation scheme implemented in the wind farm-. This can lead to a voltage support strategy in a nearby node, especially if the voltage at that node can be estimated despite tap changing transformers. The effect of some control strategies in nearby nodes are quantified statistically regarding the stochastic nature of wind power.

[1]  Joaquín Mur,et al.  Statistical model of wind farms for power flow , 2003 .

[2]  Goran Strbac,et al.  Statistical evaluation of voltages in distribution systems with embedded wind generation , 2000 .

[3]  R. B. Chedid,et al.  Probabilistic Model of a Two-Site Wind Energy Conversion System , 2002, IEEE Power Engineering Review.

[4]  Torbjorn Thiringer,et al.  Modeling of Wind Turbines for Power System Studies , 2002, IEEE Power Engineering Review.

[5]  L. Soder,et al.  Wind power integration in power systems with bottleneck problems , 2003, 2003 IEEE Bologna Power Tech Conference Proceedings,.

[6]  Santiago Arnalte Gómez,et al.  Sistemas eólicos de producción de energía eléctrica , 2003 .

[7]  R. Billinton,et al.  Probabilistic assessment of power systems , 2000, Proceedings of the IEEE.

[8]  T. Petru,et al.  Flicker contribution from wind turbine installations , 2004, IEEE Transactions on Energy Conversion.

[9]  E. Iso,et al.  Measurement Uncertainty and Probability: Guide to the Expression of Uncertainty in Measurement , 1995 .

[10]  R. Billinton,et al.  Considering load-carrying capability and wind speed correlation of WECS in generation adequacy assessment , 2006, IEEE Transactions on Energy Conversion.

[11]  Thomas Ackermann,et al.  Wind Power in Power Systems , 2005 .

[12]  Ismael Sánchez,et al.  Short-term prediction of wind energy production , 2006 .

[13]  B. Dakyo,et al.  Large Band Simulation of the Wind Speed for Real-Time Wind Turbine Simulators , 2002, IEEE Power Engineering Review.

[14]  Á. Bayod,et al.  Power Quality Analysis of Wind Turbines. Part II - Dynamic Analysis , 2003 .

[15]  J. Cidras,et al.  Synchronization of asynchronous wind turbines , 2002 .

[16]  S. H. Jangamshetti,et al.  Normalized Power Curves as a Tool for Identification of Optimum Wind Turbine Generator Parameters , 2001, IEEE Power Engineering Review.