變壓器空載投入時保護誤動作的分析報告

本文共計1500余字；
短小精悍，結(jié)構(gòu)清晰；

［摘 要］利用傅立葉級數(shù)對變壓器空載合閘時的勵磁涌流進行了定量分析，討論了合閘時引起差動保護誤動作的原因，并提出了改進的方法。
［關(guān)鍵詞］空載,差動保護,勵磁涌流

Abstract Analyzing quantitatively excitation flash flow by using Fourier series,the causes of malfunction of the differential protection system for no-load transformer are discussed. And some improvement meausres against its malfunction are proposed. Thus its microcomputerized differential protection system is perfected.
Key Words no-load; differential protection; excitation current

基本框架：

1 變壓器差動保護基本原理
2 空載合閘過程中的勵磁涌流分析
3 結(jié)論

參考文獻
[1] 汪國梁.電機學(xué)[Ｍ].北京:機械工業(yè)出版社,1996.
Malfunction Analysis of Differential Protection of No-Load Transformer
GAO Wang