南方电网技术2024，Vol.18Issue(2)：1-11,11.DOI:10.13648/j.cnki.issn1674-0629.2024.02.001
柔性直流输电系统高频谐振自适应抑制策略
Adaptive Suppression Strategy of High Frequency Resonance in MMC-HVDC Transmission System
摘要
Abstract
Recently,the high frequency resonance problems of modular multilevel converter based high voltage direct current(MMC-HVDC)take place frequently,which have seriously threatened the stability of power systems.As the actual system network topology and operation modes change frequently,the high frequency resonance characteristics with the high frequency bandwidth of MMC-HVDC are complex,which bring challenges to the suppression of the high frequency resonance of MMC-HVDC.In order to improve performance of the suppression strategy of high frequency resonance in the case of multiple operating modes,firstly,the impedance characteristics of the system are established.Then the defects of different suppression strategies are analyzed.Based on the above research,a high frequency resonance suppression strategy based on an adaptive band-stop filter is proposed in this paper.By adjust-ing the number and parameters of additional band-stop filters,the strategy effectively solves the variable problem of high frequency resonance under different operation modes of AC power system and has strong adaptability.Finally,the effectiveness of the proposed suppression strategy is verified through PSCAD electromagnetic transient simulations.关键词
柔性直流输电/阻抗分析法/高频谐振/抑制策略/自适应带阻滤波器Key words
modular multilevel converter based high voltage direct current(MMC-HVDC)/impedance analysis method/high frequency resonance/suppression strategy/adaptive band-stop filter分类
动力与电气工程引用本文复制引用
王延纬,刘宇明,杨荣照,钟明明,林建熙,付超,易杨,秦颖婕,周保荣..柔性直流输电系统高频谐振自适应抑制策略[J].南方电网技术,2024,18(2):1-11,11.基金项目
国家自然科学基金集成项目(U22B600010) （U22B600010）
中国南方电网有限责任公司科技项目(GDKJXM20201967).Supported by the Joint Funds of National Natural Science Foundation of China(U22B600010) （GDKJXM20201967）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(GDKJXM20201967). （GDKJXM20201967）
