我国火电基地串补输电系统的次同步谐振问题  

SSR Problem in Compensated Transmission System of Thermal Power Bases in China

作　　者：刘世宇[1] 谢小荣[1] 王仲鸿[1] 

机构地区：[1]清华大学电机工程与应用电子技术系,北京市海淀区100084

出　　处：《电网技术》2008年第1期5-8,19,共5页Power System Technology

基　　金：国家重点基础研究发展计划项目(973项目)(2004CB217906)。~~

摘　　要：分析了不同装机容量和不同输送距离下火电基地的输电能力及其所需的固定串补配置,并采用特征值分析方法对串补可能引发的次同步谐振(sub-synchronons resonance,SSR)进行了评估。结果表明,当火电基地装机容量大于2000MW,输送距离在400km以上,串补度在30%～50%时,将面临不同程度的SSR威胁。装机容量愈大,输电距离愈长,要求串补度愈高,SSR的危害愈严重。The transfer capability of thermal power bases under different installed capacities and transmission distances as well as its required fixed series compensation （FSC） are analyzed. By means of eigenvalue analysis the sub-synchronous resonance （SSR） that may cause by series compensation is evaluated. Analysis results show that the thermal power base will face with different extent of SSR risk while the installed capacity of thermal power base is more than 200MW, the transmission distance is longer than 400kin and the series compensation ratio is between 30 percent and 50 percent. With the increment of installed capacity, transmission distance and series compensation level, the damage of SSR will be more serious.

关 键 词：火电基地 输电能力 次同步谐振 特征值分析 

分 类 号：TM761.411[电气工程—电力系统及自动化]