李永刚,贺梦娟,刘静利,晋飞

• 1:华北电力大学电力工程系
• 2:国网潍坊供电公司

摘要(Abstract)：

由于实际运行中风速的随机性和不确定性，针对风速变化对不同控制策略下双馈风机系统运行稳定性和调频效果影响进行研究，可为多工况下调频控制方法的选择提供依据。首先，分析双馈风机系统的基本控制模型，比较虚拟同步机和下垂控制调频机理的联系和区别；其次，评估不同风速下双馈风机系统的有效调频动能，建立包含风速变量的双馈风机调频系统小信号模型，并在此基础上推导出风机系统等效惯量和风速的耦合关系，根据伯德图和特征根的根轨迹图分析初始运行风速对虚拟同步机和下垂控制双馈风机系统调频动态特性的影响，确定虚拟同步机控制的临界振荡风速；最后，利用DIgSILENT进行时域仿真，验证理论分析的正确性。

关键词(KeyWords)： 下垂控制;虚拟同步机;调频能量;惯性响应;临界风速

Abstract:

Keywords:

基金项目(Foundation): 国家电网公司科技项目（SGSDWF00FCJS2000226）

作者(Author): 李永刚,贺梦娟,刘静利,晋飞

DOI: 10.19635/j.cnki.csu-epsa.000962

参考文献(References)：

• [1]李超，王洪涛，韦仲康，等(Li Chao,Wang Hongtao,Wei Zhongkang,et al).含大型风电场的弱同步电网协调控制策略(Coordinated control of weakly-synchronized grid containing large wind farms)[J].电力自动化设备(Electric Power Automation Equipment),2015,35(4):96-103.
• [2]颜湘武，孙颖，李晓宇，等(Yan Xiangwu,Sun Ying,Li Xiaoyu,et al).基于双馈风力发电场虚拟惯量控制策略优化(Optimization of virtual inertia control strategy based on doubly-fed wind farm)[J].华北电力大学学报(Journal of North China Electric Power University),2020,47(6):42-51.
• [3]康忠健，辛士郎，仲崇山，等(Kang Zhongjian,Xin Shilang,Zhong Chongshan,et al).双馈风电场穿透功率增加对电力系统稳定影响综述(Impact of ride-through power increase of DFIG-based wind farm on power system stability)[J].电力自动化设备(Electric Power Automation Equipment),2011,31(11):94-99.
• [4]Singarao V Y,Rao V S.Frequency responsive services by wind generation resources in United States[J].Renewable and Sustainable Energy Reviews,2016,55:1097-1108.
• [5]Strbac G,Shakoor A,Black M,et al.Impact of wind generation on the operation and development of the UK electricity systems[J].Electric Power Systems Research,2007,77(9):1214-1227.
• [6]Ramtharan G,Ekanayake J B,Jenkins N.Frequency support from doubly fed induction generator wind turbines[J].IET Renewable Power Generation,2007,1(1):3-9.
• [7]陈昕，张昌华，黄琦(Chen Xin,Zhang Changhua,Huang Qi).引入功率微分项的并网下垂控制逆变器小信号建模与分析(Small-signal modeling with power differential term for droop control inverter and analysis)[J].电力自动化设备(Electric Power Automation Equipment),2017,37(2):151-157.
• [8]王赟程，陈新，张旸，等(Wang Yuncheng,Chen Xin,Zhang Yang,et al).三相并网逆变器锁相环频率特性分析及其稳定性研究(Frequency characteristics analysis and stability research of phase locked loop for three-phase grid-connected inverters)[J].中国电机工程学报(Proceedings of the CSEE),2017,37(13):3843-3853.
• [9]钟庆昌(Zhong Qingchang).虚拟同步机与自主电力系统(Virtual synchronous machines and autonomous power systems)[J].中国电机工程学报(Proceedings of the CSEE),2017,37(2):336-348.
• [10]程启明，余德清，程尹曼，等(Cheng Qiming,Yu Deqing,Cheng Yiman,et al).基于自适应旋转惯量的虚拟同步机控制策略(Control strategy of virtual synchronous generator based on adaptive rotational inertia)[J].电力自动化设备(Electric Power Automation Equipment),2018,38(12):79-85.
• [11]岳家辉，张新燕，周鹏，等(Yue Jiahui,Zhang Xinyan,Zhou Peng,et al).基于自适应惯量阻尼的双馈风电机组虚拟同步控制策略(Virtual synchronization control strategy of double-fed wind turbines based on adaptive inertia damping)[J].电力系统及其自动化学报(Proceedings of the CSU-EPSA),2021,33(9):40-48.
• [12]杨赟，梅飞，张宸宇，等(Yang Yun,Mei Fei,Zhang Chenyu,et al).虚拟同步机转动惯量和阻尼系数协同自适应控制策略(Coordinated adaptive control strategy of rotational inertia and damping coefficient for virtual synchronous generator)[J].电力自动化设备(Electric Power Automation Equipment),2019,39(3):125-131.
• [13]Alipoor J,Miura Y,Ise T.Power system stabilization using virtual synchronous generator with alternating moment of inertia[J].IEEE Journal of Emerging and Selected Topics in Power Electronics,2015,3(2):451-458.
• [14]Liu Jia,Miura Y,Ise T.Comparison of dynamic characteristics between virtual synchronous generator and droop control in inverter-based distributed generators[J].IEEETrans on Power Electronics,2016,31(5):3600-3611.
• [15]曹军，王虹富，邱家驹(Cao Jun,Wang Hongfu,Qiu Jiaju).变速恒频双馈风电机组频率控制策略(Frequency control strategy of variable-speed constant-frequency doubly-fed induction generator wind turbines)[J].电力系统自动化(Automation of Electric Power Systems),2009,33(13):78-82.
• [16]张昭遂，孙元章，李国杰，等(Zhang Zhaosui,Sun Yuanzhang,Li Guojie,et al).超速与变桨协调的双馈风电机组频率控制(Frequency regulation by doubly fed induction generator wind turbines based on coordinated overspeed control and pitch control)[J].电力系统自动化(Automation of Electric Power Systems),2011,35(17):20-25,43.
• [17]De Almeida R G,Pecas Lopes J A.Participation of doubly fed induction wind generators in system frequency regulation[J].IEEE Trans on Power Systems,2007,22(3):944-950.
• [18]Vidyanadan K V,Senroy N.Primary frequency regulation by deloaded wind turbines using variable droop[J].IEEETrans on Power Systems,2013,28(2):837-846.
• [19]潘文霞，全锐，王飞(Pan Wenxia,Quan Rui,Wang Fei).基于双馈风电机组的变下垂系数控制策略(A variable droop control strategy for doubly-fed induction generators)[J].电力系统自动化(Automation of Electric Power Systems),2015,39(11):126-131.
• [20]王硕(Wang Shuo).双馈风机虚拟同步并网控制基础理论与关键技术研究(Basic Theory and Key Technology of Virtual Synchronous Controlled DFIG-based Wind Turbine)[D].武汉：华中科技大学(Wuhan:Huazhong University of Science and Technology),2017.
• [21]高澈，田新首，李琰，等(Gao Che,Tian Xinshou,Li Yan,et al).基于运行状态评估的双馈风机自适应虚拟同步机控制(Adaptive virtual synchronous generator control of DFIG based on operation state evaluation)[J].电网技术(Power System Technology),2018,42(2):517-523.
• [22]Ullah N R,Thiringer T,Karlsson D.Temporary primary frequency control support by variable speed wind turbinespotential and applications[J].IEEE Trans on Power Systems,2008,23(2):601-612.
• [23]王刚，侍乔明，崔志勇，等(Wang Gang,Shi Qiaoming,Cui Zhiyong,et al).一种风力机虚拟惯量控制与传统发电机调速控制的协调法(A coordinated strategy of virtual inertia control of wind turbine and governor control of conventional generator)[J].电网技术(Power System Technology),2015,39(10):2794-2801.
• [24]刘彬彬，杨健维，廖凯，等(Liu Binbin,Yang Jianwei,Liao Kai,et al).基于转子动能控制的双馈风电机组频率控制改进方案(Improved frequency control strategy for DFIG-based wind turbines based on rotor kinetic energy control)[J].电力系统自动化(Automation of Electric Power Systems),2016,40(16):17-22.
• [25]田新首，王伟胜，迟永宁，等(Tian Xinshou,Wang Weisheng,Chi Yongning,et al).基于双馈风电机组有效储能的变参数虚拟惯量控制(Variable parameter virtual inertia control based on effective energy storage of DFIG-based wind turbines)[J].电力系统自动化(Automation of Electric Power Systems),2015,39(5):20-26,33.
• [26]李和明，张祥宇，王毅，等(Li Heming,Zhang Xiangyu,Wang Yi,et al).基于功率跟踪优化的双馈风力发电机组虚拟惯性控制技术(Virtual inertia control of DFIG-based wind turbines based on the optimal power tracking)[J].中国电机工程学报(Proceedings of the CSEE),2012,32(7):32-39.