王全胜;叶华;张国民;裴玮;齐智平;

• 1:中国科学院大学
• 2:中国科学院电工研究所

摘要(Abstract)：

提出了模块化多电平换流器改进动态相量模型的建模方法,并在理论上证明了改进动态相量方法与传统动态相量方法的统一性。该方法可避免积分与卷积运算,使MMC动态相量模型推导的工作量大大减小。所建模型将8阶MMC改进动态相量模型模块、交流接口模块、直流接口模块、MMC控制模块和二次环流抑制模块分开建模,当外接电路不同时,只需修改接口模块电气参数与控制模块中的控制策略即可,方便MMC与外电路连接形成多端网络。最后在稳态运行和换流站交流侧发生三相接地短路故障情况下,对比了Matlab平台建立的MMC动态相量模型与PSCAD平台建立的MMC电磁暂态模型的仿真结果,验证了所提方法的正确性。改进动态相量模型方法在获得较高精度的同时,可以大大加快仿真速度,节省仿真时间,使得该模型有望在大规模柔性直流电网建模仿真研究中得到更广泛的应用。

关键词(KeyWords)： 模块化多电平换流器;动态相量;柔性直流电网;环流抑制;交直流接口电路

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51377155);; 国家重点基础研究发展计划项目(973项目)(2015CB251005)~~

作者(Author): 王全胜;叶华;张国民;裴玮;齐智平;

Email:

DOI: 10.13335/j.1000-3673.pst.2017.2224

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