非特征谐波引起的次同步振荡研究  

SUBSYNCHRONOUS OSCILLATION ANALYSIS IN HVDC SYSTEM ——SSO CAUSED BY NON\|CHARACTERISTIC HARMONICS

作　　者：周群[1] 张益[1] 黄家裕[1] 

机构地区：[1]上海交通大学电力工程系,上海200240

出　　处：《电网技术》1999年第12期4-5,10,共3页Power System Technology

摘　　要：次同步振荡（ＳＳＯ）是电力系统的一种动态不稳定现象，即电力系统对某一次同步频率，其模态阻尼为负，如果轴系具有一与其相补的自然频率，就会引起机电相互助增的耦合振荡。文章应用通信技术中的调制理论分析研究了非特征谐波引起的次同步振荡，指出可能发生次同步振荡的频率范围，揭示了其机理。This paper presents a method to predict the possibility of subsynchronous oscillation caused by HVDC system. The modulation function of HVDC system under various conditions is referred. Based on the modulation theory of communication technology, the characteristic and non\|characteristic harmonics in HVDC system are analyzed. Then subsynchronous harmonics are emphasized, by which the possible frequency range to produce SSO is obtained.

关 键 词：次同步振荡 调制函数 电力系统 直流输电 

分 类 号：TM721.1[电气工程—电力系统及自动化]