中国电机工程学报2024，Vol.44Issue(15)：5871-5885,中插3,16.DOI:10.13334/j.0258-8013.pcsee.230478
计及交直流谐波传递的MMC-BTB系统阻抗特性分析及环流配合策略
Analysis of Impedance Characteristics and Circulating Current Coordination Strategy of MMC-BTB System Considering AC and DC Harmonic Transmission
罗永捷 1段修超 1黄鹏 1王强钢 1周念成1
作者信息
- 1. 输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市 沙坪坝区 400044
- 折叠
摘要
Abstract
The back-to-back system based on modular multilevel converter(MMC-BTB)has close control interaction between converters,which leads to frequent oscillation accidents.In the existing research,the single-station model ignoring harmonic transmission cannot accurately describe the impedance characteristics of MMC-BTB,and the coordination between the two converters is less frequently considered from the perspective of oscillation suppression.Therefore,this paper considers the mechanism of harmonic transmission and attenuation between converters in MMC-BTB,and proposes an oscillation suppression strategy based on the impedance equivalence of various circulation control methods.First,the flow path of harmonic is qualitatively analyzed based on the equivalent circuit,and the double-station model of MMC-BTB is derived quantitatively.Then,the interaction mechanism of the circulation control on both stations along the harmonic path is analyzed,which demonstrates its key role in improving the impedance characteristics of MMC-BTB,and proposes a strategy for coordination and parameter optimization of circulation control.Finally,the correctness of the theoretical analysis and the proposed strategy is verified through Matlab/Simulink.关键词
背靠背系统/谐波传递/阻抗特性/环流控制/协调配合Key words
back-to-back system/harmonic transmission/impedance characteristic/circulation control/coordination and cooperation分类
信息技术与安全科学引用本文复制引用
罗永捷,段修超,黄鹏,王强钢,周念成..计及交直流谐波传递的MMC-BTB系统阻抗特性分析及环流配合策略[J].中国电机工程学报,2024,44(15):5871-5885,中插3,16.
