变压器空载合闸失败的分析和防范对策Analysis on No-load Closing Failure of Transformer and the Countermeasures
伍常林
WU Chang-lin(East China Langyashan Pumped-storage Power Co.
摘要(Abstract):
简要介绍了琅琊山抽水蓄能电站主接线和变压器保护的基本配置,针对一起励磁涌流导致2号变压器空载合闸失败事件进行详细分析;提出了减少励磁涌流引起保护误动的防范对策。
Main lines and the basic configuration of the transformer in Langyashan Pumped-Storage Power Co.Ltd.are introduced.The paper expounds no-load closing failure of transformer No.2 due to excitation surge current and proposes the countermeasures against maloperation of protection caused by excitation surge current.
关键词(KeyWords):
变压器;励磁涌流;二次谐波;保护
transformer;excitation surge current;secondary harmonic;protection
基金项目(Foundation):
作者(Author):
伍常林
WU Chang-lin(East China Langyashan Pumped-storage Power Co.
DOI: 10.19585/j.zjdl.2013.05.008