摘要
针对由彼此落点接近的一条基于模块化多电平换流器型高压直流输电(modular multilevel converter based HVDC,MMC-HVDC)线路和一条电网换相换流器型高压直流输电(line commutated converter based high voltage direct current,LCC-HVDC)线路所构成的混合双馈入直流输电系统,基于多变量反馈控制理论建立可定量分析和评估MMC-HVDC与LCC-HVDC控制系统之间交互影响的等效独立控制通道。在此基础之上,定量分析评估LCC定关断角控制器、锁相环以及MMC锁相环、外环控制器、环流抑制器对MMC-HVDC与LCC-HVDC控制系统交互作用及小干扰稳定性的影响。最后,在PSCAD/EMTDC上搭建混合双馈入直流输电系统的电磁暂态详细仿真模型,仿真验证理论分析结果的有效性。
In order to quantitatively evaluate the interactions between modular multilevel converter based high voltage direct current (MMC-HVDC) control system and line commutated converter based high voltage direct current (LCC-HVDC) control system in a dual-infeed hybrid HVDC system which consists of a MMC-HVDC and a LCC-HVDC link locating in close mutual proximity, an equivalent individual control channel of the dual-infeed hybrid HVDC system was established based on multivariate feedback control theory. Then, the impact of LCC constant extinction angle controller, LCC phase-locked loop (PLL), MMC-PLL, MMC outer-loop controller and MMC circulating current suppression controller on the control interactions between MMC control system and LCC control system and the small-signal stability were quantitatively evaluated. Finally, the effectiveness of the theoretical analysis results were validated by a detailed dual-infeed hybrid HVDC electromagnetism transient model in PSCAD/EMTDC.
作者
刘炜
郭春义
赵成勇
LIU Wei;GUO Chunyi;ZHAO Chengyong(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources (North China Electric PowerUniversity),Changping District,Beijing 102206,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第13期3757-3765,共9页
Proceedings of the CSEE
基金
国家自然科学基金项目(51507060)
中央高校基本科研业务专项资金(2017XS17)~~
