摘要
设计了一个用于改善交直流混合系统阻尼特性的HVDC模糊控制器,该模糊控制器既能根据运行条件修改增益,提高其控制性能;同时该模糊控制器的附加控制量ΔU能提高交流系统的稳定性,增强系统的阻尼,抑制系统的振荡。分别用传统控制与模糊控制方法对三机交直流系统的模型用NETOMAC软件进行了仿真,结果显示:在系统受到大干扰时,模糊控制器较传统的P-I控制器能更好地抑制交直流混合系统中交流系统的振荡、增强系统的阻尼,提高交流系统的稳定性。
This paper presents a fuzzy logic controller at HVDC rectifier in AC/DC power systems, which can improve AC/DC power system stability by using A U supplemental control. The results obtained from simulations indicate the improvement in damping of power oscillation in fuzzy control. Compared with the conventional proportional-integral type controller in HVDC system, the fuzzy logic controller is more helpful to restrain oscillation, increase damping and improve the dynamic performance of the AC/DC power systems during disturbance and recovery.
出处
《中国电力》
CSCD
北大核心
2003年第8期36-39,共4页
Electric Power
基金
国家重点基础研究专项经费资助项目(G1998020312)
