中国电机工程学报2023，Vol.43Issue(23)：8987-8998,12.DOI:10.13334/j.0258-8013.pcsee.221806
考虑电压前馈控制的MMC-HVDC并网稳定性分析及其阻抗控制优化方法
MMC-HVDC Integrated System Stability Analysis and Impedance Optimization Method With Consideration of Voltage Feed-forward Control
摘要
Abstract
In order to suppress high frequency resonance,low-pass filter-based voltage feedforward controllers are commonly used in MMC-HVDC projects.Voltage feedforward control may have negative impacts on MMC-HVDC integrated system stability.Therefore,it is worth analyzing the impacts of feedforward control on impedance characteristic as well as integrated system stability.First,the multi-harmonic linearization method is adopted to establish the MMC-HVDC sequence impedance model considering voltage feedforward control.Then,the impedance sensitivity analysis method is used to quantify the impacts of different controllers on the stability of integrated system.Voltage feedforward control is essential in integrated systems stability analysis and in system stability improvement.Finally,an optimization method for MMC-HVDC impedance control based on voltage feedforward control is proposed to improve the stability of integrated system.The accuracy of the sequence impedance model and the effectiveness of impedance optimization method proposed in this paper are verified in Matlab/Simulink.关键词
模块化多电平换流器/电压前馈控制/稳定性分析/阻抗控制优化Key words
modular multilevel converter(MMC)/voltage feedforward control/stability analysis/impedance optimization分类
信息技术与安全科学引用本文复制引用
黄通,陈新,张东辉,何国庆,李光辉,李彧野..考虑电压前馈控制的MMC-HVDC并网稳定性分析及其阻抗控制优化方法[J].中国电机工程学报,2023,43(23):8987-8998,12.基金项目
国家电网公司科技项目(SGTYHT/21-JS-223).Project Supported by State Grid Corporation Science and Technology Project(SGTYHT/21-JS-223). （SGTYHT/21-JS-223）
