基于改进差分进化法的含双馈型风电场的配电网无功优化

Reactive power optimization based on modified differential evolution algorithm for power distribution system with DFIG wind farms

以双馈型风电机组为研究对象,建立以风电无功功率、并联电容器投运组数为优化变量,以电压稳定性最好、电压偏差最小和有功网损最小为目标的无功优化模型。在对差分进化方法进行改进的基础上,研究基于改进差分进化法的含双馈型风电场的配电网无功优化算法。在IEEE 33节点系统中进行算例测试,结果验证了无功优化算法的有效性,合理调度双馈风力发电机有利于配电网的运行优化与电能质量的改善。

A reactive power optimization model is built for the DFIG（Doubly-Fed Induction Generator） unit of wind farm,which takes the reactive power of wind farm and the operating number of parallel capacitors as its optimization variables and the best voltage stability,the smallest voltage deviation and the least power loss as its objectives.The reactive power optimization algorithm based on the modified differential evolution algorithm is developed for the power distribution system with DFIG wind farms.It is tested in IEEE 33-bus system and results show its effectiveness.The rational dispatch of DFIG is helpful for the optimal operation of power distribution system and the improvement of power quality.