摘要
针对电压源型高压直流输电(VSC-HVDC)在应用中带来的AC/DC交直流输电系统的协调控制问题,建立了AC/DC数学模型,并对AC/DC提出了一种新的分散最优协调控制模式。在该模式中,逆系统线性化理论被应用于直流输电系统的控制。文中为了与交流电网相配合,将标幺制引入了直流输电系统,并以Lyapunov间接法证明了该闭环非线性系统的稳定性。AC/DC混合输电系统的数值仿真结果表明了该控制策略的有效性和鲁棒性。
Considering the AC/DC hybrid transmission system＇s coordinated control caused by the voltage source converter based HVDC （VSC-HVDC） application, the mathematic model of AC/DC hybrid system is built. One new type of decentralized coordinated optimal control mode of AC/ DC hybrid transmission system is proposed, in which the Inverse System Theory is used in the control strategy of VSC-HVDC. For the matching with the traditional AC net, per unit form of mode is introduced to the VSC-HVDC in this paper. The method of Lyapunov is used to prove the stability for the close-loop nonlinear system. The numerical simulations results of the AC/DC hybrid transmission system show the efficiency and robust of the proposed control scheme.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2005年第19期37-42,共6页
Proceedings of the CSEE
基金
教育部优秀青年教师基金项目新世纪优秀人才支持计划项目。
