Impedance modeling and resonance stability analysis of modular multilevel converter with power synchronization control

被引：0
|
作者：
Lu Q. [1 ]
Yang Y. [1 ]
Zheng J. [1 ]
Li L. [1 ]
Guo H. [2 ]
Zhang Z. [2 ]
Xu Z. [2 ]
机构：
[1] Power Dispatching Control Center of Guangdong Power Grid Corporation, Guangzhou
[2] College of Electrical Engineering, Zhejiang University, Hangzhou
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2022年 / 42卷 / 08期
关键词：
harmonic state space; impedance modeling; modular multilevel converter; power synchronization control; resonance stability;
D O I：
10.16081/j.epae.202206027
中图分类号：
学科分类号：
摘要：
To investigate the impedance characteristics of PSC-MMC（Power Synchronization Control based on Modular Multilevel Converter） and the broadband resonance stability of the system with grid-connected PSC-MMC，utilizing harmonic state space method，considering the internal dynamic characteristics and complete control loops of MMC，an equivalent impedance model of PSC-MMC is built. The effects of newly employed power synchronization loop，reactive-voltage control and other major control loops on impedance characteristics in the power synchronization control are analyzed. The study has identified that PSC-MMC might have negative damping effect in subsynchronous frequency band and high frequency band，so there is a risk of causing resonance instability. Impedance scanning and electromagnetic transient simulation are carried out based on PSCAD／EMTDC，the simulative results respectively verify the accuracy of the model and stability analysis results. © 2022 Electric Power Automation Equipment Press. All rights reserved.
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页码：160 / 166
页数：6
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