WANG Yongqiang, MAO Qingbo, LIU Shifu, et al. Analysis of One Generator-tripping Accident Caused by Over Temperature of Excitation Transformer[J]. 2017, 38(5): 66-68.
WANG Yongqiang, MAO Qingbo, LIU Shifu, et al. Analysis of One Generator-tripping Accident Caused by Over Temperature of Excitation Transformer[J]. 2017, 38(5): 66-68. DOI: 10.3969/J.ISSN.2095-3429.2017.05.016.
一起励磁变超温引起的发电机组跳闸事故分析
摘要
介绍一起因Unitrol 5000励磁系统励磁变超温造成的发电机组跳闸事故
根据保护动作情况和录波数据
通过全面检查
得出事故发生的根本原因系励磁变测温元件采样失真
间接原因为励磁变温度保护配置欠合理。
Abstract
An accident of generator trip caused by over temperature of excitation transformer which run through the UNITROL 5000 excitation system had been in-troduced in this paper.According to the protection action and the recorded data
through the comprehensive inspec-tion
it is concluded that the fundamental cause of the acci-dent is the sampling distortion of the temperature measure-ment element in the excitation transformer
and the indirect reason is that the temperature protection configuration of the excitation transformer is not reasonable.