文章摘要
张学广,邱望明,方冉,等.双馈风电机组静止坐标系下阻抗建模及次同步谐振抑制策略[J].电力系统自动化,2019,43(6):41-48. DOI: 10.7500/AEPS20180824002.
ZHANG Xueguang,QIU Wangming,FANG Ran, et al.Impedance Modeling and Sub-synchronous Resonance Mitigation Strategy of Doubly-fed Induction Generator Based Wind Turbine in Static Reference Frame[J].Automation of Electric Power Systems,2019,43(6):41-48. DOI: 10.7500/AEPS20180824002.
双馈风电机组静止坐标系下阻抗建模及次同步谐振抑制策略
Impedance Modeling and Sub-synchronous Resonance Mitigation Strategy of Doubly-fed Induction Generator Based Wind Turbine in Static Reference Frame
DOI:10.7500/AEPS20180824002
关键词: 双馈风电机组  次同步谐振  阻抗建模  附加阻尼控制  虚拟感抗控制
KeyWords: doubly-fed induction generator(DFIG)based wind turbine  sub-synchronous resonance(SSR)  impedance modeling  additional damping control  virtual inductance control
上网日期:2019-01-23
基金项目:国家重点研发计划资助项目(2018YFB0904000);国家电网公司科技项目(SGJB0000TKJS1801242)
作者单位E-mail
张学广 哈尔滨工业大学电气工程与自动化学院, 黑龙江省哈尔滨市 150001 zxghit@hit.edu.cn 
邱望明 哈尔滨工业大学电气工程与自动化学院, 黑龙江省哈尔滨市 150001  
方冉 哈尔滨工业大学电气工程与自动化学院, 黑龙江省哈尔滨市 150001  
朱琳 云南省能源研究院有限公司, 云南省昆明市 650011  
徐殿国 哈尔滨工业大学电气工程与自动化学院, 黑龙江省哈尔滨市 150001  
摘要:
      为清楚分析双馈风力串补系统次同步谐振发生机理,建立了双馈风电机组静止坐标系下的阻抗模型。首先,将双馈风电机组同步旋转坐标系下阻抗模型转换为复矢量形式,通过频率变换得到其在两相静止坐标系下的频域阻抗模型。基于阻抗模型所代表的物理意义,采用等效RLC串联电路,分析了控制器参数及电网参数对并网系统等效阻抗及谐振频率的影响。分别从增大次同步频段阻尼和降低系统发生次同步谐振频率的角度出发,在转子侧控制器中同时引入了附加阻尼和虚拟感抗控制,分析表明该方法能有效地抑制次同步谐振。最后,通过仿真验证了所建模型及理论分析的正确性。
Abstract:
      To explain the mechanism of sub-synchronous resonance(SSR)in doubly-fed induction generator(DFIG)based wind turbine system under series compensation, a static reference frame impedance model of DFIG based wind turbine is established. Firstly, the dq impedance model of DFIG based wind turbine is transformed into complex vector form and its frequency-domain impedance model is derived by frequency transformation. Based on the physical interpretation represented by the impedance model, the influence of controller and network parameters on equivalent impedance and SSR frequency of grid-connected system is analyzed using equivalent RLC series circuit. Damping control and virtual inductance control are proposed to mitigate SSR, which can increase the damping of SSR region and reduce the SSR frequency of the system, respectively. Finally, the accuracy of the model and theoretical analysis is verified by simulation.
查看全文(Free!)   查看附录   查看/发表评论  下载PDF阅读器