模块化多电平换流器的桥臂平均值模型

doi:10.11930/j.issn.1004-9649.201905116

中国电力 ›› 2019, Vol. 52 ›› Issue (8): 8-15.DOI: 10.11930/j.issn.1004-9649.201905116

模块化多电平换流器的桥臂平均值模型

陈宁, 齐磊, 包萌, 崔翔

华北电力大学新能源电力系统国家重点实验室, 北京 102206

收稿日期:2019-05-27 修回日期:2019-07-08 发布日期:2019-08-14
作者简介:陈宁(1990-),男,博士研究生,从事柔性直流电网过电压仿真与建模研究,E-mail:ncepuchenning@163.com
基金资助:
国家电网公司科技项目（电压源换流器与直流电网建模仿真及协调控制的基础理论研究，SGRIZLKJ[2015]457）。

Bridge Average Value Model of Modular Multilevel Converter

CHEN Ning, QI Lei, BAO Meng, CUI Xiang

State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Beijing 102206, China

Received:2019-05-27 Revised:2019-07-08 Published:2019-08-14
Supported by:
This work is supported by Science and Technology Project of SGCC (Basic Theory Research on Modeling, Simulation and Coordination Control of Voltage Source Converter and DC Power Grid, No.SGRIZLKJ[2015]457).

摘要/Abstract

摘要： 模块化多电平换流器（MMC）的快速仿真模型是进行柔性直流输电系统相关研究的基础。在众多模型中，MMC的桥臂戴维南模型应用最为广泛，通过研究发现其仿真速度可以进一步提高。在MMC桥臂戴维南等效电路的基础上，利用能量均分思想提出了一种新的桥臂平均值模型。该模型显著减小了戴维南等效模型的计算负担，提高了模型的仿真效率。通过仿真验证了该模型可以适用于环流抑制、交直流侧故障仿真等应用场景。

关键词: 模块化多电平换流器, 电磁暂态仿真, 桥臂等效模型, 戴维南等效模型, 平均值模型

Abstract: The speed-up simulation model of modular multilevel converter (MMC) is the basis for the research of voltage-source converter high-voltage direct-current (VSC-HVDC) system. Among many models, the bridge Thevenin model of MMC is the most widely used. In this paper, it is found that the simulation speed can be further improved. Based on the Thevenin equivalent circuit of MMC's bridge, a new bridge average value model (AVM) is proposed by using the idea of energy equalization. The proposed model significantly reduces the computational burden of Thevenin model and improves the simulation efficiency of the model. The simulation results show that the model can be applied to the application scenarios of circulating current suppression, AC/DC side fault simulation and so on, in which cases that do not pay attention to the capacitor voltage of sub-modules.

Key words: modular multilevel converter, electromagnetic transient simulation, bridge equivalent model, Thevenin model, average value model

中图分类号:

TM13

陈宁, 齐磊, 包萌, 崔翔. 模块化多电平换流器的桥臂平均值模型[J]. 中国电力, 2019, 52(8): 8-15.

CHEN Ning, QI Lei, BAO Meng, CUI Xiang. Bridge Average Value Model of Modular Multilevel Converter[J]. Electric Power, 2019, 52(8): 8-15.

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模块化多电平换流器的桥臂平均值模型

Bridge Average Value Model of Modular Multilevel Converter

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模块化多电平换流器的桥臂平均值模型

Bridge Average Value Model of Modular Multilevel Converter

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