Mid- and High-frequency Resonance Characteristics and Suppression Strategies of VSC-UHVDC for Large-scale Renewable Energy Transmission  

作　　者：Junjie Feng Wang Xiang Jinyu Wen Chuang Fu Qingming Xin Xiaobin Zhao Changyue Zou Biyue Huang Zhiyong Yuan 

机构地区：[1]School of Electrical and Electronic Engineering,Huazhong University of Science and Technology,Wuhan,China [2]Electric Power Research Institute,China Southern Power Grid Co.,Ltd.,Guangzhou,China

出　　处：《Journal of Modern Power Systems and Clean Energy》2024年第6期2058-2070,共13页现代电力系统与清洁能源学报(英文)

基　　金：This work was supported by National Key Research and Development Program of China(No.2023YFB2405900);the Technology Project of China Southern PowerGrid(No.ZBKJXM20232198).

摘　　要：Mid-and high-frequency resonance(MHFR)is highly likely to occur at the sending end of voltage source con-verter-based ultra-high voltage direct current(VSC-UHVDC)for large-scale renewable energy transmission.It is of great im-portance to investigate the resonance characteristics and the corresponding suppression strategies.Firstly,this paper intro-duces the overall'control scheme of VSC-UHVDC for large-scale renewable energy transmission.Then,the impedance mod-els of VSC under grid-forming control with AC voltage coordi-nated control are established.The mid-and high-frequency im-pedance characteristics of VSC-UHVDC are analyzed.The key factors affecting the impedance characteristics have been re-vealed,including the AC voltage control,the voltage feedfor-ward,the inner current loop,the positive-sequence and nega-tive-sequence independent control(PSNSIC),and the control de-lay.The MHFR characteristics at the sending-end system are analyzed in the whole operation process,including the black start and the normal power transmission operation.An integrat-ed control scheme is proposed to address the MHFR problems.Finally,extensive case studies are conducted on a planned VSC-UHVDC project to verify the theoretical analysis.

关 键 词：Large-scale renewable energy voltage source converter-based ultra-high voltage direct current(UHVDC) mid-and high-frequency resonance suppression measure 

分 类 号：TM721.1[电气工程—电力系统及自动化]