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.
出处
《电力自动化设备》
EI
CSCD
2000年第6期6-10,共5页
Electric Power Automation Equipment
关键词
标积制动
不完全纵差保护
发电机
三峡电站
scalar product restrained
incomplete differential protection
inter branch short circuit
