基于数据驱动鲁棒控制的双馈风机区间振荡附加阻尼控制方法  

An Inter-area Oscillation Supplementary Damping Control for DFIG Wind Farm Based on Data-driven Robust Control

作　　者：施星宇 傅俊诚 李泽文[1] 王炜宇 曹一家 曾祥君[1] SHI Xingyu;FU Juncheng;LI Zewen;WANG Weiyu;CAO Yijia;ZENG Xiangjun(School of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410076,Hunan Province,China)

机构地区：[1]长沙理工大学电气与信息工程学院,湖南省长沙市410076

出　　处：《中国电机工程学报》2025年第7期2633-2644,I0015,共13页PROCEEDINGS OF THE CHINESE SOCIETY FOR ELECTRICAL ENGINEERING

基　　金：国家自然科学基金(青年科学基金项目)(52107070);湖南省自然科学基金项目(2022JJ40490);湖南省教育厅科学研究项目(23B0309)。

摘　　要：含风电接入的互联电力系统面临精确建模难、运行方式复杂多变及风电出力波动大等难题,导致传统双馈风机附加阻尼控制器的区间振荡阻尼性能不稳定。为此,该文提出一种基于数据驱动鲁棒控制的附加阻尼控制方法,利用双馈风机无功调制能力提升系统区间振荡阻尼效果。首先依托动态线性化技术,建立以伪梯度矩阵为参数的数据驱动模型,并提出适应系统运行方式变化的参数在线更新方法,提高数据驱动模型的准确度;然后设计数据驱动离散二阶滑模面,生成控制律来抑制区间低频振荡,同时降低风速变化等扰动对控制器阻尼性能的不利影响;最后理论分析闭环系统的稳定性。仿真结果表明,在各种运行工况变化和扰动下,所提阻尼控制方法能有效抑制系统的区间低频振荡,大幅提升控制系统的适应性和鲁棒性。The interconnected power system with the integration of wind farms faces the difficulties of accurate modeling,complex time-varying operation conditions,and large fluctuation of wind power output,which leads to the instability of the inter-area low-frequency oscillation damping performance of the traditional supplementary damping controller for doubly fed induction generator(DFIG).Therefore,this paper proposes a supplementary damping control method based on data-driven robust control to enhance the damping performance of the inter-area oscillation in power systems,utilizing the reactive power modulation capability of DFIG.First,based on dynamic linearization technology,a data-driven model with a pseudo gradient(PG)matrix is established,and an online parameter updating method is proposed to adapt to the change of system operation condition to improve the accuracy of the data-driven model.Then,the data-driven discrete second-order sliding mode surface is designed to generate the control law,effectively suppressing inter-area oscillations while mitigating the adverse impacts of disturbances on the damping performance of the controller.Finally,the stability of the closed-loop system is analytically proved.The simulation results show that the proposed damping control method can effectively suppress the inter-area low-frequency oscillation under varying operating conditions and disturbances,thus significantly improving the adaptability and robustness of the control system.

关 键 词：数据驱动 滑模控制 区间低频振荡 广域附加阻尼控制器 双馈风机系统 

分 类 号：TM315[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]