发电厂励磁变保护现场相量测试分析  

Analysis for Field Phase Test for Protection of Excitation Transformers in Power Plants

作　　者：林国栋[1] 唐志军[1] 

机构地区：[1]国网福建省电力有限公司电力科学研究院,福建福州350007

出　　处：《电力与电工》2013年第4期75-76,87,共3页Electric Power and Electrical Engineering

摘　　要：针对励磁变差动保护相量测试中励磁变高压侧与低压侧电流相位差实际值与理论计算结果不一致的问题,对励磁变高低压侧电流波形特点及数字式相位表测试原理进行分析,查找原因,解决现场试验问题。This paper discussed the issue that the actual phase difference of high voltage side current and low voltage side current of excitation transformer does not match with the theoretical calculations during the phase testing of differential protection of excitation transformer,then identified the reason of the issue and to solve the questions of actual field test through the analysis of testing principle of digital phase-meter and the characteristics of current waveform of high & low voltage side.

关 键 词：励磁变 相量测试 测量原理 

分 类 号：TM773.4[电气工程—电力系统及自动化]