Optimization Decision Method of Wind Farm Reactive Power Compensation Capacity Considering Wind Power Distribution

The reactive power range of a doubly fed induction generator(DFIG) wind turbine fluctuates with its active power output,and it may become uncontrollable under some extreme conditions.As such,DFIG wind turbines ability for sustainable voltage support will be affected adversely.An optimization method for determining the reactive power compensation capacity is proposed,on the basis of statistical analysis of wind power distribution characteristic by using estimated power data.Considering the wind power distribution characteristic and the wind turbine reactive power capacity,an optimization model is built to minimize both the total cost of operation and reactive power compensation.The method can be used for decision-making in the reactive power compensation of wind farm,and realize continuous and seamless reactive voltage regulation for wind farms at minimum cost.An improved particle swarm optimization(PSO) is developed to solve the optimization problem.The model is proved to be effective.