前端调速式风电机组功率优化控制研究  

Research on Power Optimal Control of the Front-end Speed Controlled Wind Turbine

作　　者：张生睿[1] 董海鹰[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,甘肃兰州730070

出　　处：《机械研究与应用》2015年第2期161-166,共6页Mechanical Research & Application

摘　　要：针对额定风速以上前端调速式风电机组功率优化问题,提出一种基于差分进化算法的功率优化控制策略。以液力变矩调速系统输出转速恒定、机组输出功率平滑为控制目标建立目标函数,采用差分进化算法,对变桨系统桨距角与液力变矩调速系统导叶开度角两个控制参数进行优化,根据优化后参数对风电机组进行变桨与变矩控制,实现对机组输出有功的优化控制。以2 MW前端调速式风电机组为对象进行仿真分析,仿真结果表明,根据本文提出的方法对风电机组进行功率控制,平滑了风电机组的输出功率,减小了功率波动,验证了控制策略的可行性。An optimal power control strategy which is based on the differential evolution algorithm is proposed in order to solve the power optimization problem for the front-end speed controlled wind turbine when the wind speed is beyond the rated value. The objective function is established after setting these two targets which are invariable output speed of the hydrodynamic speed regulating system and smooth output power of the wind turbine as the control objectives.The propeller pitch angle and the guide vane angle are optimized as two control parameters of the wind turbine by using the differential evolution algorithm;and according to the optimized parameters, the power optimization control of wind turbine is realised after the pitch and torque con-trol.The 2MW front-end speed controlled wind turbine model is used for simulation analysis and the results show that the power fluctuation is reduced and the output power of the wind turbine is smooth, thus it is verified that the optimal control strategy is feasible and effective.

关 键 词：前端调速风电机组 差分进化算法 桨距角 导叶开度 

分 类 号：TM614[电气工程—电力系统及自动化]