Experimental Study of Magnetic Effects of Steel Tanks on Three-Phase Transformer Transients

被引：7
|
作者：
Wu, Qiong [1 ]
Deswal, Digvijay [1 ]
Yang, Ming [1 ,2 ]
Wang, Siwei [1 ]
de Leon, Francisco [1 ]
机构：
[1] NYU, Tandon Sch Engn, Dept Elect & Comp Engn, Brooklyn, NY 11201 USA
[2] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2020年 / 35卷 / 02期
关键词：
Oil insulation; Circuit faults; Impedance; Steel; Surges; Transformer cores; Ferroresonance; inrush-currents; GIC; no-load loss; three-phase transformer; transformer tank; zero-sequence impedance; MODEL;
D O I：
10.1109/TPWRD.2019.2920105
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper presents an experimental study of the magnetic effects of steel tanks on different three-phase transformers. Removable steel tanks are designed and built for transformers with distinct sizes and core topologies. Corresponding tanks of nonmagnetic materials are also built to study the effects of tank material. Zero-sequence tests, open-circuit (no-load) tests, ferroresonance, geomagnetically induced current (GIC), and energization (inrush current) tests are performed on the transformers with and without tanks. The results indicate that steel tanks have a significant effect on the zero-sequence impedance, ferroresonance performance, GIC, and no-load losses in steady state, while the tank has no appreciable effect on inrush currents.
引用
收藏
页码：665 / 673
页数：9
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