三峡电站发电机新型标积制动不完全纵差保护的最新进展  

Recent Progress of New Scalar Product Restrained Incomplete- Differential Protection for Three Gorge Power Plant

作　　者：王维俭[1] 桂林[1] 王祥珩[1] 

机构地区：[1]清华大学电机系,北京100084

出　　处：《电力自动化设备》2000年第6期6-10,共5页Electric Power Automation Equipment

摘　　要：二滩电站采用的ABB公司制造的新型标积制动不完全纵差保护有技术性能上的若干优点 ,但是也存在不容忽视的原理性缺陷。通过对三峡电站 1号发电机各种内部短路的详尽计算分析 ,发现有少量同相不同支路间发生匝间短路时 ,新型标积制动不完全纵差保护将拒动。介绍这种拒动情况 ,阐明其机理 。The new scalar product restrained incomplete differential protection of ABB has been adopted in Ertan power plant.It has several merits of technical performance,but also has a drawback in principle,which shouldn't be ignored.Detailed calculation and analysis have been made for NO.1 generator of Three Gorge Power Plant with regard to all inner S/Cs.When inter branch S/C occurs within same phase,new scalar product restrained incomplete differential protection will be non operative on a few occasions.This article has clarified the mechanism of the drawback mentioned above,and proposed some suggestions for improvement.

关 键 词：标积制动 不完全纵差保护 发电机 三峡电站 

分 类 号：TV734.2[水利工程—水利水电工程] TM772[电气工程—电力系统及自动化]