计及风力发电机转速安全约束的DFIG一次调频模型预测控制策略  

Model predictive control strategy of DFIG in primary frequency regulation considering wind-turbine speed safety constraints

作　　者：周涛[1] 张锋杨 徐妍 王亚伦 纪子洋 Zhou Tao;Zhang Fengyang;Xu Yan;Wang Yalun;Ji Ziyang(School of Automation,Nanjing University of Science and Technology,Nanjing 210094,China;Jiangsu Frontier Electric Technology Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京理工大学自动化学院,江苏南京210094 [2]江苏方天电力技术有限公司,江苏南京211102

出　　处：《南京理工大学学报》2024年第2期155-164,共10页Journal of Nanjing University of Science and Technology

基　　金：江苏省自然科学基金(BK20220216);中央高校基本科研业务费专项资金(30922010709)。

摘　　要：针对传统方法控制双馈感应发电机(DFIG)的调频效果过于依赖参数整定的问题,该文提出了一种基于模型预测控制(MPC),计及转速安全约束的风力发电机参与一次调频控制策略。该方法结合风力发电机动力学模型与频率响应模型建立预测模型,通过线性回归方法变参考值将风力发电机转速的稳定性纳入考虑。相较于虚拟惯性控制等方法将系统频率偏差与转子动能直接关联,该文方法通过建立全新的预测模型,实时统筹考虑整个系统的状态信息,无需反复调整参数,在考虑转速安全性的同时兼顾全局性能。最后,通过实际算例分析验证了该文调频策略的有效性以及相对现有方法的优越性。Aiming at the problem that the frequency modulation effect of the traditional method to control the doubly fed induction generator(DFIG)dependents on the parameter setting too much,a fan participating in primary frequency regulation control strategy is proposed based on model predictive control(MPC)and speed safety constraints.This method combines the fan dynamic model and frequency response model to establish a prediction model,and takes the stability of fan speed into account by changing the reference value through linear regression method.Compared with the methods such as virtual inertial control,which directly associates the system frequency deviation with the rotor kinetic energy,this method considers the state information of the whole system in real time by establishing a new prediction model,without repeatedly adjusting the parameters,considering the speed safety along with the global performance.Finally,the effectiveness of the proposed frequency modulation strategy and its advantages over the existing methods are verified by an actual example.

关 键 词：双馈感应发电机 一次调频 频率响应模型 模型预测控制 转子动能控制 虚拟惯性控制 转速安全 线性回归 

分 类 号：TM614[电气工程—电力系统及自动化]