向家坝—上海特高压直流输电工程直流回路的谐振研究  

Study on DC Circuit Resonance of Xiangjiaba-Shanghai UHVDC Transmission Line

作　　者：朱大鹏[1] 许斌[1] 曾静[1] 

机构地区：[1]中南电力设计院,武汉市430071

出　　处：《电力建设》2008年第5期1-4,共4页Electric Power Construction

摘　　要：通过对换流阀、平波电抗器、直流滤波器(DCF)、输电线路等直流输电系统关键组成部分的研究,建立了计算UHVDC系统阻抗频率曲线所需要的模型。计算采用PSCAD/EMTDC模拟,换流阀、平波电抗器、DCF采用集总参数模型,输电线路采用扩展Bergeron分布参数模型。利用此方法,完成了向家坝—上海特高压直流输电工程的阻抗-频率特性曲线的计算,并给出了长距离特高压直流输电工程发生直流谐振的解决方案。Through study on key components of DC transmission system, including conversion valve, smoothing reactor, DC filter （DCF）, and transmission line, etc., models required for HVDC impedance-frequency curve calculation are established. PSCAD/EMTDC is used in calculation, and lumped parameter model is applied to conversion valve, smoothing reactor, and DCF, while extended Bergeron distributed parameter model is used for transmission line. Impedance-frequency curves of Xiangjiaba-Shanghai DC transmission Line are calculated using this method. And solutions to DC resonance of long distance UHVDC transmission lines are also given.

关 键 词：特高压直流输电 阻抗频率特性 直流谐振 PSCAD/EMTDC 

分 类 号：TM721.1[电气工程—电力系统及自动化]