摘要
随着大型发电厂建设的不断增加,与其配套的励磁变压器用电流互感器(CT)用量也随之增加。与此同时,用于发电机励磁变压器上的电流互感器在结构形式和参数选取确定等方面还有待于进行细致分析考虑。本文在梳理总结某发电厂发电机励磁变事故的基础上,对其所用的电流互感器提出了改进意见和技术措施,以供相关技术人员进行参考。
With the increasing construction of large power plants, the amount of current transformer used for its supporting excitation transformer also increases. At the same time, the current transformer for the excitation transformer of the generator needs to be careful analysed and considered in the structure form and parameter selection aspects,etc. On the basis of summarizing the excitation accidents and problems of a power plant, this article puts forward improvement opinions and technical measures for the current transformer used for reference for the relevant technical personnels.
作者
沙玉洲
潘婉玉
王慧
李晔
李淑兰
SHA Yu-zhou;PAN Wan-yu;WANG Hui;LI Ye;LI Shu-lan(Dalian No.1 Instrument Transformer Co.,Ltd.,Dalian 116200,China;North China Power Engineering Co.,Ltd.,of China Power Engineering Consulting Group,Beijing 100120,China)
出处
《变压器》
2022年第3期61-65,共5页
Transformer
关键词
励磁变压器
电流互感器
短路电流
短时热稳定电流
动稳定电流
准确限值系数
Excitation transformer
Current transformer(CT)
Short-circuit current
Short time thermal current
Dynamic current
Accuracy limit factor(ALF)
