基于新型限流式SSSC的风火打捆系统暂态稳定性分析  

Transient Stability Analysis of Wind-thermal Bindling System Based on New Current-limiting SSSC

作　　者：常宇瑞 匡洪海[1] 王凯 何志毅 CHANG Yurui;KUANG Honghai;WANG Kai;HE Zhiyi(College of Electrical and Information Engineering,Hunan University of Technology,Zhuzhou 412007,China)

机构地区：[1]湖南工业大学电气与信息工程学院,湖南株洲412007

出　　处：《电工技术》2022年第14期46-51,共6页Electric Engineering

基　　金：国家自然科学基金(编号51977072);湖北省重点实验室开放基金项目(编号2019KJX06)。

摘　　要：针对风电并网会影响系统暂态稳定性的问题,提出将电抗型限流器和静止同步串联补偿器(SSSC)组合成新型限流式SSSC串联到风火打捆系统中用以提高系统暂态稳定性的方法。在建立双馈风机(DFIG)型风火打捆系统的等值模型基础上,分析了新型限流式SSSC的限流过程,在正常运行、故障期间和故障后三种工况下根据对应等值电路分析了新型限流式SSSC对系统暂态稳定性的影响。最后在仿真软件中建立相应模型,结果表明系统串联电抗型新型限流式SSSC显著地改善了系统暂态稳定性。Aiming at the problem that the grid connection of wind power will affect the transient stability of the system,a novel type of current-limiting SSSC is proposed to be connected in series with the combination of reactance current limiter and static synchronous series compensator(SSSC)in this paper.Based on the establishment of the equivalent model of the wind-thermal bundling system of doubly fed fan(DFIG),the current-limiting process of the new current-limiting SSSC is analyzed,and the influence of the new current-limiting SSSC on the transient stability of the system is analyzed according to the corresponding equivalent circuit under normal operation,fault and post-fault conditions.Finally,the corresponding model is established in the simulation software,and the results show that the new current-limiting SSSC with series reactance can significantly improve the transient stability of the system.

关 键 词：SSSC 风火打捆 暂态稳定 

分 类 号：TM935[电气工程—电力电子与电力传动]