多样性子模块混合型MMC统一外特性高效电磁暂态模型  

Unified Terminal and Highly Efficient Electromagnetic Transient Model of Hybrid Modular Multilevel Converter with Various Sub-modules

作　　者：李亚楼 孙谦浩 孟经伟 穆清 张星 LI Yalou;SUN Qianhao;MENG Jingwei;MU Qing;ZHANG Xing(China Electric Power Research Institute,Beijing 100192,China;Department of Electrical Engineering,Tsinghua University,Beijing 100084,China)

机构地区：[1]中国电力科学研究院有限公司,北京市100192 [2]清华大学电机工程与应用电子技术系,北京市100084

出　　处：《电力系统自动化》2020年第5期138-145,共8页Automation of Electric Power Systems

基　　金：国家电网公司总部科技项目(XT71-18-030)。

摘　　要：混合型模块化多电平换流器(MMC)的高效电磁暂态仿真是研究相关技术的重要基础。然而,由于多种子模块可以被采用,且每种子模块中均包含了大量的开关,混合型MMC的详细电磁暂态模型将严重降低其仿真效率。鉴于此,文中基于开关函数的定义与电容器件的动态特性,对多样性子模块的串联结构进行了统一的动态平均化等值,并根据等值后的动态模型,提出了一种适用于直流电网高效电磁暂态仿真的混合型MMC统一外特性模型以兼顾直流电网对仿真精度及效率的双重要求。同时,所提统一模型具有良好的可移植性以满足其作为研究工具的修改便利性要求。最后,基于ADPSS仿真软件,通过与基于分立元件的详细模型进行对比,验证了所提统一外特性模型的仿真精度与效率。The highly efficient electromagnetic transient(EMT) simulation of hybrid modular multilevel converter(MMC) is an important basis for the related research about hybrid MMC. However, because there are various kinds of sub-modules(SMs) can be employed, and a lot of power electronic switches are included in each kind of SMs, the detailed EMT model of hybrid MMC will reduce the simulation efficiency seriously. In view of this background, the unified dynamic averaging equivalent model of the series structure of various SMs is proposed based on the switching function and the dynamic characteristic of capacitor. In addition,a unified terminal highly efficiency EMT model of hybrid MMC based on the proposed dynamic model of the series structure is also presented and analyzed. The proposed unified model not only is convenient but also has the great simulation accuracy and efficiency, which has good portability and is especially important for a research tool to satisfy the convenience demand of modification. Finally, the simulation accuracy and efficiency of the proposed model are validated by the comparison with the detailed model based on the simulation components in ADPSS.

关 键 词：混合型模块化多电平换流器 统一模型 多样性子模块 电磁暂态仿真 直流故障处理 

分 类 号：TM721.1[电气工程—电力系统及自动化]