基于输入-状态稳定性理论的双馈风机稳定性分析  

Stability analysis of DFIG-based wind turbine via input to state stability theory

作　　者：王若谷 李恒毅 高欣 郭宁 戴立森 WANG Ruogu;LI Hengyi;GAO Xin;GUO Ning;DAI Liseng(State Grid Shaanxi Electric Power Research Institute,Xi'an 710100,China;School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China)

机构地区：[1]国网陕西省电力公司电力科学研究院,陕西西安710100 [2]西安交通大学电气工程学院,陕西西安710049

出　　处：《电力工程技术》2022年第2期83-89,共7页Electric Power Engineering Technology

基　　金：陕西省重点研发计划资助项目(2017ZDCXL-GY-02-03)。

摘　　要：近年来风电机组装机容量增长迅速,评估其对故障后电力系统的电压稳定性的影响具有重要意义。基于与输入-状态稳定(ISS)理论等价形式的积分-积分估计,文中提出一种稳定性量化评估方法,对含双馈型风机的电力系统电压稳定性进行量化分析。该方法的优势是既能考虑外部扰动的幅值信息,又能包含其随时间波动的信息。首先基于子系统的量化评估结果,根据小增益定理提出系统层面的稳定性量化评估准则;然后,利用所提出的量化稳定性评估方法对含双馈型风机的电力系统进行电压稳定性量化评估;最后,建立含双馈型风机的电力系统仿真模型,通过时域仿真验证了量化稳定性分析方法的有效性。As the installed capacity of wind power generation is increasing continuously,analysis of the impacts on the voltage stability of power system during and after faults is important for the stable operation of power systems.An integral-integral estimate based method is proposed,which is equivalent to the concept of input-to-state stability(ISS),to perform quantitative voltage stability analysis for the power system integrated with doubly fed induction generators(DFIG)-based wind turbine.The advantage of integral-integral estimate is that the fluctuation information of external disturbances on the time scale can be considered.Firstly,according to the quantitative assessment results of subsystems,a system level quantitative stability assessment method based is proposed on small gain theory.Then,the voltage stability of power system integrated with DFIG is analyzed based on the proposed approach.Time-domain simulation on a power system integrated with a DFIG-based wind turbine verifies the accuracy of the proposed method.

关 键 词：输入-状态稳定理论 渐近增益 双馈型发电机 量化稳定性分析 小增益定理 新能源 

分 类 号：TM614[电气工程—电力系统及自动化]