中国电机工程学报2024，Vol.44Issue(1)：231-243,中插19,14.DOI:10.13334/j.0258-8013.pcsee.221949
混合级联直流输电系统整流/逆变不同控制回路动态交互作用与稳定性研究
Research on Dynamic Interaction and Stability of Rectifier/Inverter Control Loop in Hybrid Cascade HVDC System
摘要
Abstract
In order to study the interaction between the converter control systems of rectifier and inverter of hybrid cascaded high voltage direct current(HVDC)system,the state space model of hybrid cascaded HVDC system is established.The multi-input-multi-output transfer function model of the system is obtained based on the state space model.Then,the equivalent single-input-single-output feedback control model is established according to the multivariable feedback control theory for different research objectives.On this basis,the interaction between different control loops is quantitatively analyzed and the effects of system strength,electrical distance and control parameters on the interaction between the control loops are revealed.It is concluded that the interaction between the control loops is enhanced when the SCR of rectifier or inverter decreases,and the dynamic interaction between the line commutated converter(LCC)and multilevel modular converter(MMC)control loops on the inverter side is enhanced when the length of the AC tie line is shortened,and the parameters of each control loop restrict each other.Finally,the detailed electromagnetic transient simulation model of hybrid cascaded HVDC system is built on PSCAD/EMTDC to verify the effectiveness of the established single-input-single-output feedback control model and the correctness of the theoretical analysis results.关键词
混合级联直流输电系统/多变量反馈控制理论/交互作用/单输入单输出反馈控制模型Key words
hybrid cascaded high voltage direct current(HVDC)system/multivariate feedback control theory/interaction effect/single-input-single-output feedback control model分类
信息技术与安全科学引用本文复制引用
赵薇,郭春义,杨硕..混合级联直流输电系统整流/逆变不同控制回路动态交互作用与稳定性研究[J].中国电机工程学报,2024,44(1):231-243,中插19,14.基金项目
国家自然科学基金项目(面上项目)(52277093).Project Supported by National Natural Science Foundation of China(general program)(52277093). （面上项目）
