大型水轮机组低频振荡分析及应对  

Analysis and countermeasures of low frequency oscillation of large water turbine unit

作　　者：王刚 刘金华 虞涛 WANG Gang;LIU Jin-hua;YU Tao(Jiangsu Shahe Pumped Storage Power Generation Co.,Ltd,Liyang 213333,China)

机构地区：[1]雅砻江流域水电开发有限公司,四川成都610051

出　　处：《水电站机电技术》2022年第5期9-11,128,共4页Mechanical & Electrical Technique of Hydropower Station

摘　　要：电力系统目前已步入了大电网、大机组、跨区域联网的阶段,长距离输电线路广泛存在,这些因素容易导致低频振荡的产生。电力系统低频振荡如果不能在短时间内得到有效的抑制,很容易扩散引起连锁故障,造成大面积停电事故。文章对电力系统低频振荡机理进行了研究,对电厂实际发生的事件进行了详细分析,提出了具体的应对措施。At present,the power system has entered the stage of large power grid,large units and cross-regional interconnection,and long-distance transmission lines exist widely,which can easily lead to low-frequency oscillation.If the low frequency oscillation of power system can not be effectively suppressed in a short time,it is easy to spread and cause cascading failures,resulting in large-scale power outages.In this paper,the mechanism of low frequency oscillation in power system is studied,the actual events in power plant are analyzed in detail,and the specific countermeasures are put forward.

关 键 词：低频振荡 负阻尼 强迫共振 应对措施 

分 类 号：TM312[电气工程—电机]