双馈风电场并网抑制频率振荡控制策略  

Control Strategies for Suppressing Frequency Oscillation of Doubly-Fed Wind Farms Connected to Grid

作　　者：刘新宇 逯芯妍 曾龙 郝正航[3] 赵起放 李现伟 郝同盟 LIU Xinyu;LU Xinyan;ZENG Long;HAO Zhenghang;ZHAO Qifang;LI Xianwei;HAO Tongmeng(School of Electric Power,North China University of Water Resources and Electric Power,Zhenzhou 450011,China;School of Automation,Guangdong University of Technology,Guangzhou 510006,China;Electrical Engineering College,Guizhou University,Guiyang 550025,China;Henan Keyuan Water Conservancy Construction Engineering Inspection Co.,Ltd.,Zhenzhou 450003,China)

机构地区：[1]华北水利水电大学电力学院,郑州450011 [2]广东工业大学自动化学院,广州510006 [3]贵州大学电气工程学院,贵阳550025 [4]河南科源水利建设工程检测有限公司,郑州450003

出　　处：《上海交通大学学报》2022年第3期303-311,共9页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(51467003);河南省高等学校重点科研项目(21A120006)。

摘　　要：针对大型风电场跨区输送电能时引起的低频振荡问题,提出了一种阻尼系统低频振荡的单神经元自适应比例积分微分(PID)附加阻尼控制策略.通过对双馈风电机组的动态频率响应特性进行分析,构建了一种在单神经元自适应PID控制算法中引入二次型性能指标的风电场阻尼系统振荡控制器.通过对励磁变频器进行自适应调节,促使风电场快速发出有功功率,产生最大正阻尼,抑制系统低频振荡.利用MATLAB搭建含风电场的四机两区域电力系统仿真模型,通过对比验证了所提方法能够在系统发生低频振荡时有效抑制同步发电机功角的摇摆,改善系统惯性响应,降低电网发生低频振荡的风险.Aimed at the problem of low-frequency oscillations caused by cross-region power transmissioin of large-scale wind farms,a single neuron adaptive proportion integration differentiation(PID)additional damping control strategy for low-frequency oscillations of the damping system is proposed in this paper.By analyzing the dynamic frequency response characteristics of doubly-fed wind turbines,a wind farm damping system oscillation controller is constructed by introducing quadratic performance indicators into the single neuron adaptive PID control algorithm.By adaptively adjusting the excitation frequency converter,the wind farm can quickly generate active power and the maximum positive damping,and suppress the low-frequency oscillation of the damping system.MATLAB is used to build a four-machine two-region power system simulation model with a wind farm.The comparison verifies that the method proposed in this paper can effectively suppress the swing of the power angle of the synchronous generator when low-frequency oscillation occurs in the system,improve the inertial response of the system,and reduce the risk of low-frequency oscillation in the power grid.

关 键 词：双馈异步风力发电机 低频振荡 单神经元比例积分微分算法 附加阻尼控制 

分 类 号：TM614[电气工程—电力系统及自动化] TM712