US 12,340,938 B2
110 kV three-phase dry-type transformer and assembly method therefor
Tianping Wang, Changzhou (CN); Qinggan Zeng, Changzhou (CN); Qi Chen, Changzhou (CN); Guowei Zhou, Changzhou (CN); and Chenming Shi, Changzhou (CN)
Assigned to Jiangsu Huapeng Transformer Co., Ltd., Changzhou (CN)
Appl. No. 17/605,248
Filed by Jiangsu Huapeng Transformer Co., Ltd., Changzhou (CN)
PCT Filed Sep. 6, 2019, PCT No. PCT/CN2019/104797
§ 371(c)(1), (2) Date Oct. 21, 2021,
PCT Pub. No. WO2020/220552, PCT Pub. Date Nov. 5, 2020.
Claims priority of application No. 201910366006.3 (CN), filed on Apr. 30, 2019.
Prior Publication US 2022/0216004 A1, Jul. 7, 2022
Int. Cl. H01F 30/12 (2006.01); H01F 27/32 (2006.01); H01F 29/02 (2006.01); H01F 41/12 (2006.01)
CPC H01F 27/324 (2013.01) [H01F 29/025 (2013.01); H01F 41/125 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A 110 kV three-phase dry-type transformer, wherein the 110 kV three-phase dry-type transformer comprises three single-phase dry-type transformers, and each single-phase dry-type transformer comprises:
an incoming line side and an outgoing line side, the incoming line side comprising an incoming-line-side iron core column, a first low-voltage coil and an incoming-line-side high-voltage coil, the outgoing line side comprising an outgoing-line-side iron core column, a second low-voltage coil and an outgoing-line-side high-voltage coil; the incoming-line-side high-voltage coil comprising a first incoming-line-side high-voltage coil and a second incoming-line-side high-voltage coil, the outgoing-line-side high-voltage coil comprising a first outgoing-line-side high-voltage coil and a second outgoing-line-side high-voltage coil, the first incoming-line-side high-voltage coil being connected in parallel with the second incoming-line-side high-voltage coil, and the first outgoing-line-side high-voltage coil being connected in parallel with the second outgoing-line-side high-voltage coil;
the incoming-line-side iron core column and the outgoing-line-side iron core column being provided opposite to each other, the incoming-line-side iron core column, the first low-voltage coil and the incoming-line-side high-voltage coil being provided in sequence at an interval, and the outgoing-line-side iron core column, the second low-voltage coil and the outgoing-line-side high-voltage coil being provided in sequence at an interval;
a first end for connecting in parallel the first incoming-line-side high-voltage coil and the second incoming-line-side high-voltage coil being provided in a middle of the incoming-line-side high-voltage coil as a first incoming line end, and a second end for connecting in parallel the first incoming-line-side high-voltage coil and the second incoming-line-side high-voltage coil being provided at an end of the incoming-line-side high-voltage coil as a first outgoing line end;
a first end for connecting in parallel the first outgoing-line-side high-voltage coil and the second outgoing-line-side high-voltage coil being provided in a middle of the outgoing-line-side high-voltage coil as a second incoming line end, and a second end for connecting in parallel the first outgoing-line-side high-voltage coil and the second outgoing-line-side high-voltage coil being provided at an end of the outgoing-line-side high-voltage coil as a second outgoing line end;
the first outgoing line end being connected with the second incoming line end; and
the three single-phase dry-type transformers being connected through three second outgoing line ends.