摘要
针对经串补并网双馈风机系统次同步振荡(subsynchronous oscillation,SSO)存在多控制环节参与、多参数耦合难以分析的问题,提出基于Sobol方法的双馈风机阻抗灵敏度分析及参数协调优化方法。首先,根据电压空间矢量阻抗法建立双馈感应发电机与转子侧换流器(rotor-side converter,RSC)数学模型,推导包含转子侧控制环节的双馈风机系统等效阻抗解析表达式;其次,利用Sobol方法进行阻抗灵敏度分析,量化各参数的影响,并计算评价各参数间耦合关系的量化指标;然后,得到考虑多影响因素的参数联合调整稳定域,提出了多参数的协调优化策略;最后,在MATLAB/Simulink搭建了双馈风机经串补并网的仿真模型,验证了联合参数调整稳定域以及协调优化策略的正确性。
Due to the problem of participation of multi-control link and difficulty in analyzing the multi-parameter coupling in the subsynchronous oscillation of doubly fed induction generator(DFIG)system connected to power grid via series compensation,the impedance sensitivity analysis of DFIG based on Sobol method and the parameter coordination optimization method are proposed.Firstly,according to the impedance method based on space vector,the mathematical model of DFIG and rotor side converter(RSC)is established,and the analytical expression of equivalent impedance of DFIG system including rotor side control link is deduced.Secondly,the Sobol method is used to analyze the impedance sensitivity,quantify the influence of each parameter,and calculate the quantitative index to evaluate the coupling relationship between parameters.Then,the parameter-joint-adjustment stability region considering multiple influencing factors is obtained,and a multi-parameter coordinated optimization strategy is proposed.Finally,the time-domain simulation model of doubly fed fan connected to the grid through series compensation is built in MATLAB/Simulink to verify the correctness of parameter influence analysis and parameter-joint-adjustment stability region.
作者
王渝红
闵杨晰
于光远
尹爱辉
廖建权
郑宗生
WANG Yuhong;MIN Yangxi;YU Guangyuan;YIN Aihui;LIAO Jianquan;ZHENG Zongsheng(College of Electrical Engineering,Sichuan University,Chengdu 610041,China;Jinan Power Supply Company,State Grid Shandong Electric Power Company,Jinan 250000,China)
出处
《高电压技术》
EI
CAS
CSCD
北大核心
2023年第4期1703-1713,共11页
High Voltage Engineering
基金
国家重点研发计划(响应驱动的大电网稳定性智能增强分析与控制技术)(2021YFB2400800)。
关键词
双馈风机
次同步振荡
等效阻抗
影响因素
参数优化
稳定域
doubly fed induction generator
subsynchronous oscillation
equivalent impedance
influence factors
parameter optimization
stable region
