双馈风电机组变系数综合惯性策略优化控制  

Comprehensive inertia strategy optimization control of variation factor of double⁃fed wind turbine generator system

作　　者：袁佳豪 王维庆[1,2] 王海云 吴赛楠[1,2] YUAN Jiahao;WANG Weiqing;WANG Haiyun;WU Sainan(School of Electrical Engineering,Xinjiang University,Urumqi 830047,China;Engineering Research Center of MOE for Renewable Energy Power Generation and Grid Connection Technology,Xinjiang University,Urumqi 830047,China)

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047 [2]新疆大学可再生能源发电与并网技术教育部工程研究中心,新疆乌鲁木齐830047

出　　处：《现代电子技术》2022年第21期97-102,共6页Modern Electronics Technique

基　　金：国家自然科学基金项目(51667020);教育部创新团队项目(IRT_16R63);新疆维吾尔自治区重点实验室开放课题(2018D04005)。

摘　　要：双馈感应风力发电机由于采用电力电子变流器控制,导致风电机组输出功率与系统频率解耦,无法响应系统频率变化。传统综合惯性控制技术能够使风电机组电磁功率与系统频率产生耦合,响应频率变化,但控制参数适应性差,且过度的转动惯量会阻碍系统频率的恢复。针对以上问题,对双馈风电机组参与电网调频的控制策略进行研究,提出一种变系数模糊控制策略。首先,在传统综合惯性控制基础上,分别整定出虚拟惯量系数和下垂控制系数的最大约束值;其次,附加模糊控制回路使控制系数跟随频率偏差和频率偏差变化率的改变进行动态调整,最大限度利用转子动能提供可靠惯量支撑的同时,又加快系统频率恢复,提高系统的频率稳定性;最后,在Matlab/Simulink中建立四机两区域模型仿真,结果表明,相较于传统综合惯性控制,附加模糊控制具有更好的鲁棒性与实用性。The double⁃fed induction wind turbine generator is controlled by power electronic converter,which leads to the decoupling of wind turbine generator system′s output power and system frequency,and fails to respond to the change of system frequency.The traditional integrated inertia control technology can couple the wind turbine generator system′s electromagnetic power with the system frequency and respond to the frequency change,but the adaptability of control parameters is poor,and excessive moment of inertia may impede the recovery of the system frequency.In view of the above,the control strategy of double⁃fed wind turbine generator system participating in grid frequency modulation is studied,and a variable coefficient fuzzy control strategy is proposed.On the basis of the traditional integrated inertia control,the maximum constraint values of virtual inertia coefficient and droop control coefficient are set respectively.The fuzzy control loop is added to make the control coefficient dynamically adjusted with the change of frequency deviation and frequency deviation change rate,which accelerates the recovery of the system frequency and improves the stability of the system frequency while making the best of rotor kinetic energy to provide reliable inertia support.The four⁃machine and two⁃zone model simulation was established in Matlab/Simulink.The simulation results show that the added fuzzy control has better robustness and practicability in comparison with the traditional integrated inertia control.

关 键 词：综合惯性控制 变系数 双馈风电机组 风力发电 转子动能 模糊控制 频率响应 惯量支撑 

分 类 号：TN876-34[电子电信—信息与通信工程] TM614[电气工程—电力系统及自动化]