摘要
大型发电机组局部场强过强,导致附近空气电离,产生电晕。定子线棒防晕保护与修复包括线棒内部、外部、端部及其搭接区防晕保护和修复,是定子线棒防晕处理与保护的主要方式,电晕处理和施工应严格有效,并经定子线棒整体三相一起加压试验,判断定子绕组交直流实验数据符合要求,以保证发电机组可以正常运行。
In large-scale generator units,the strong electric field around the stator bar could cause the ionization of the nearby air and thus generate the corona problem. General measures of the corona prevention and repairing include the corona protection and repairing of the external,internal,end and connecting areas of the stator bar. The corona prevention treatment should be effective and verified by the three-phase voltage test of the whole stator bar to ensure the normal operation of the units.
出处
《水电与新能源》
2017年第2期31-33,40,共4页
Hydropower and New Energy
关键词
线棒绝缘
外部防晕
端部防晕
insulation of the stator bar
external corona prevention
end corona prevention
