双馈风力发电机组经串补并网的次同步振荡分析  

Sub-Synchronous Oscillation Analysis of Double-Fed Wind Turbines via Series Complementary Grid Connection

作　　者：严金昊 谢佳锟 姚李孝[1] 杨国清[1] YAN Jinhao;XIE Jiakun;YAO Lixiao;YANG Guoqing(Xi’an University of Technology,Xi’an 710048,Shaanxi,China)

机构地区：[1]西安理工大学,陕西西安710048

出　　处：《电网与清洁能源》2021年第5期123-127,133,共6页Power System and Clean Energy

基　　金：国家自然科学基金项目(51077109)。

摘　　要：大规模风电采用串联补偿技术可以提高风电的利用率,但是串联补偿技术会增加风力发电机组的次同步振荡的可能。利用PSCAD建立5.0 MW的双馈风力发电机组经串补并网的模型,利用特征值法对该模型的次同步振荡的模态进行了分析,得出了影响次同步振荡的影响因素。最后通过时域分析法进行了验证,得到验证结果和特征值分析结果是一致的。The series compensation technology for largescale wind power can improve the utilization rate of wind power,but the adoption of the technology could increase the possibility of subsynchronous oscillation of wind turbines.In this paper,the model of 5.0MW doubly-fed wind turbine via series complementary grid connection is established by using PSCAD,and the mode of subsynchronous oscillation is analyzed by using eigenvalue method,and the influencing factors of subsynchronous oscillation are obtained.Finally,the proposed method is verified with the time domain analysis method and the verification results are found to be consistent with the eigenvalue analysis results.

关 键 词：双馈风力发电机 次同步振荡 特征值 时域仿真。 

分 类 号：TM743[电气工程—电力系统及自动化]