摘要
交直流混合输电系统的动态响应性能直接影响电力系统的稳定性.为提高系统的动态响应速度和控制器的鲁棒性,本文基于无源性理论从具体结构出发,设计了直流输电系统的无源性调制控制器.以交直流并联的两机系统为研究对象,对系统的输入输出进行重构,并对系统的无源性进行验证.根据稳定性和无源性之间的关系,设计出反馈控制规律.对两种不同情况的仿真,显示出该控制律在保证系统的稳定性的同时,提高了系统的动态响应速度.
The dynamic performance of the AC-DC transmission system plays a key role in the stability of a power system. To accelerate the transient response and to improve the controller robustness, we design a passivity-based modulation controller for a DC transmission system, by applying the passivity theory to the construction of the physical system. A parallel 2-generator AC-DC system with reconstructed input and output is taken as the testing object for verifying the passivity. The feedback control strategy is designed based on the relation between passivity and stability. Simulation results of the system in two different disturbance conditions demonstrate the reduction of the transient time, while keeping the stability of the system.
出处
《控制理论与应用》
EI
CAS
CSCD
北大核心
2008年第4期777-779,782,共4页
Control Theory & Applications
基金
国家自然科学基金(50337010)
科技部"十一五"重大支撑项目(2006BAA02A17)
关键词
交直流输电系统
直流调制
无源性
AC-DC transmission systems
DC modulation
passivity
