摘要
针对模块化多电平换流器型高压直流输电系统换流站级控制,为实现PI调节器参数的快速、准确调节,在分析模块化多电平换流器型轻型直流输电系统连续数学模型的基础上,引入前馈控制,提出了包含前馈-反馈和稳态逆模型的双闭环控制;并对改进后的双闭环控制系统控制器主要参数的设计方法进行了深入研究,详细推导了参数设计过程;最后,通过PSCAD/EMTDC仿真软件对所提出的控制系统结构及其参数设计方法进行了仿真验证,结果证实了所述方法的可行性和有效性。
In order to improve the response speed of PI regulator, a continuous mathematical model and a control system of modular multilevel converter (MMC) type high voltage direct current (HVDC) are studied. Feed forward control is adopted in the double elosed loop control method, which combines the inverse steady state model and feedforward-feedback control. Moreover, a design method for the main parameters of double closed loop controller is studied. Finally, the proposed structure and parameter design method of the control system are verified by simulations using PSCAD/EMTDC, indicating its validity and effectiveness.
作者
杨浩
帅智康
沈征
周猛
彭斌
YANG Hao SHUAI Zhikang John Shen ZHOU Meng PENG Bin(College of Electrical and Information Engineering, Hunan University, Changsha 410082, China)
出处
《电力系统及其自动化学报》
CSCD
北大核心
2017年第2期77-83,95,共8页
Proceedings of the CSU-EPSA
关键词
模块化多电平换流器
高压直流输电
数学模型
PI调节器
前馈-反馈控制
参数设计方法
modular multilevel converter(MMC)
high voltage direct current (HVDC)
mathematical model
PI controller
feedforward-feedbaek control
parameter design method