摘要
现在的变电站的保护全部都改为综自系统,使得原先传统的常规保护为微机综自保护所替代,从而将常规站改造为无人值班站。主变保护是所有保护中的重点,其调试和定检校验成为维护人员所必须实现的关键,但是现在微机型主变保护校验的方法并不完善,厂家的校验方法也很烦琐,所以有必要对现有校验方法做出简化。
The protecting devices are all be antomating-synthetically in the substation of now.The protecting of the main transformer is the most important in all protectings, so the testing is the key factor for us.But now,our method isn＇t perfect,and the manufacturer＇s method is too complicated.So we analysis all the date and obtain the conclusion.
出处
《河南电力》
2009年第1期18-19,27,共3页
Henan Electric Power
关键词
主变保护
差动保护
比率差动
门槛电流
拐点电流
差动电流
制动电流
the mian transformer＇s protecting
differential protecting
ratio differential
threshold current
inflection current
differential cunrrent
braking current
