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	Effects of internal short circuit faults on short circuit reactance of power transformer
	Wang Zan-ji ; Tang Qi-chao ; Liu Xiu-cheng
	2010-05-06 ; 2010-05-06
关键词	Practical Theoretical or Mathematical/ design engineering leakage currents magnetic fields power transformers short-circuit currents transformer windings/ power transformer short circuit reactance internal short circuit faults unbalanced axial distribution ampere-turns transverse leakage magnetic field component leakage inductance primary winding secondary winding fault position/ B8350 Transformers and reactors B5120 Magnetostatics B0170C Project and design engineering
中文摘要	Based on the method of calculating short circuit reactance in transformer design, a study on effects of internal short circuit faults on the short circuit reactance has been carried out. The results show that the internal short circuit causes the unbalanced axial distribution of ampere-turns and increase the transverse leakage magnetic field (TLMF) component. The existence of TLMF will increase the leakage inductance. However, when the internal short circuit happens in the primary winding, the contribution of decreasing leakage inductance owing to decrease of the total ampere-turns is more considerable than the contribution of increasing leakage inductance owing to increase of TLMF and hence, the short circuit reactance decreases. When the internal short circuit happens in the secondary winding whose terminals are connected together, the short circuit reactance at primary side may increases. No matter where the short circuit happens, the reactance is not equal to rating one and its value increases or decreases nonlinearly with the change of the fault position.
语种	中文 ; 中文
出版者	Chinese Soc. Electr. Eng ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/11782]
专题	清华大学
推荐引用方式 GB/T 7714	Wang Zan-ji,Tang Qi-chao,Liu Xiu-cheng. Effects of internal short circuit faults on short circuit reactance of power transformer[J],2010, 2010.
APA	Wang Zan-ji,Tang Qi-chao,&Liu Xiu-cheng.(2010).Effects of internal short circuit faults on short circuit reactance of power transformer..
MLA	Wang Zan-ji,et al."Effects of internal short circuit faults on short circuit reactance of power transformer".(2010).

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