Fast Coordinated Distribution Method for Curtailed Wind Power Among Clustered Wind Farms With Limited Output

The coordinated active power control of clustered wind farms is an effective way to improve the wind power utilization and promote the security and stability of wind farm operation. To fully tap the advantage of the coordination active control of clustered wind farms under limited output scenarios, a fast coordinated distribution method for curtailed wind power among clustered wind farms with limited output was proposed. Firstly, based on the thinking of hiving the cluster off, the clustered wind farms were divided into two sorts, i.e., power rising farms and power deduction farms, and the constraint condition of each sort of wind farms was simplified respectively, then according to its own characteristics a coordinative allocation model of the curtailed wind power of wind power cluster, in which the minimum quadratic sum of the adjustment amount of wind farm output was taken as objective, was constructed. Secondly, by use of strong duality theory a fast analytical solution method for the curtailed wind power in the mentioned model. Finally, taking a certain actual wind power cluster in Henan province for example, the effectiveness of the proposed model and method were verified. Results of computing example show that the proposed coordinated distribution strategy for curtailed wind power among wind power farms can effectively downsize the scale of the problem and improve solving speed of the model, besides, utilizing the obtained curtailed wind power strategy both the frequency of dispatching order variation and the start and stop times of the units can be decreased, and it is in favour of improving the level of refined operation control of wind farms.