摘　要：采用一种暂态能量函数,剖析直流阻尼调制抑制低频振荡的机理.基于留数,指出制约直流调制效果的关键因素,对直流调制在交直流电力系统中的运行特性进行分析,认为采用广域信号可以提高直流调制对区间振荡的抑制效果.以我国第1个交直流混合电网--南方电网为背景,验证理论分析的正确性.在此基础上,对直流阻尼调制在大规模交直流电网中的作用进行总结.
关键词：交直流电力系统;直流调制;低频振荡
分类号：TM721　文献标识码：B
文章编号：1004-9649(2007)04-0025-05

Function of HVDC damping modulation in large scale AC/DC power systems

MAO Xiao-ming　 ZHANG Yao　

基金项目：国家自然科学基金资助项目(50337010)
作者简介：毛晓明(1971-),女,湖北武汉人,博士,副教授,从事高压直流输电及交、直流电力系统分析与控制研究.E-mail:mxmsunny@163.com
作者单位：毛晓明（广东工业大学,自动化学院,广东,广州,510090;华南理工大学,电力学院,广东,广州,510640）　
　　　　　 张尧（华南理工大学,电力学院,广东,广州,510640）　

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