倪晓军,丁超,唐英杰,陈安伟,陆翌
NI Xiaojun,DING Chao,TANG Yingjie,CHEN Anwei,LU Yi

• 1:国网浙江省电力有限公司电力科学研究院
• 2:国网浙江省电力有限公司

摘要(Abstract)：

柔性低频交流输电系统通过电力电子变频器实现低频运行，以M3C（模块化多电平矩阵式换流器）为代表的电力电子变频器在并网运行期间呈现出高度非线性的动态特性，其与交流系统之间的交互作用容易引发高频谐振问题。基于实际工程案例，研究了柔性低频交流输电系统低频侧发生高频谐振的机理，结合现场试验数据和RTDS（实时数字仿真）仿真结果开展分析，并讨论了可能影响高频谐振特性的因素。
Flexible low frequency AC transmission system employ power electronic converters, particularly modular multilevel matrix converters(M3C), to enable low-frequency operation. These converters demonstrate highly nonlinear dynamic characteristics during grid-connected operation, and their interaction with AC transmission systems can potentially trigger high-frequency resonance phenomena. Based on an actual engineering case study, this paper investigates the mechanism of high-frequency resonance occurring on the low-frequency side of LFAC transmission systems. The analysis incorporates field test data and results obtained from real-time digital simulator(RTDS), while systematically examining factors that may influence resonance characteristics.

关键词(KeyWords)： 柔性低频交流输电系统;模块化多电平矩阵式换流器;高频谐振
flexible low frequency AC transmission system;M3C;high-frequency resonance

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划（2021YFB2401100）;; 国家电网有限公司科技项目（5500-202119101A-0-0-00）

作者(Author): 倪晓军,丁超,唐英杰,陈安伟,陆翌
NI Xiaojun,DING Chao,TANG Yingjie,CHEN Anwei,LU Yi

DOI: 10.19585/j.zjdl.202506011

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