An Efficient Model to Calculate Axial Natural Vibration Frequency of Power Transformer Winding

被引：0

作者：

Li, Kaiqi ^{[1
]}

Guo, Jian ^{[1
]}

Liu, Jun ^{[2
]}

Zhang, Anhong ^{[2
]}

Yu, Shaojia ^{[2
]}

机构：

[1] Nanjing Univ Aeronaut & Astronaut, Nanjing 211106, Jiangsu, Peoples R China

[2] Hangzhou Qiantang River Elect Grp Co Ltd, Hangzhou 311243, Zhejiang, Peoples R China

来源：

JOURNAL OF MAGNETICS | 2016年 / 21卷 / 03期

基金：

中国国家自然科学基金;

关键词：

power transformer; winding; efficient finite element model; axial natural vibration frequency;

D O I：

10.4283/JMAG.2016.21.3.431

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the design of transformer winding, natural vibration frequency is an important parameter. This paper presents a 2D model to calculate axial vibration natural frequency of power transformer winding based on the elastic dynamics theory, and according to the elastic support equivalent principle of radial pressboards. The 3D model to calculate natural vibration frequency can be simplified as a 2D one as the support of pressboards on the winding is same. It is verified that results of the 2D model are consistent with those of 3D one, but the former can achieve much higher calculation efficiency. It shows that increasing the width and number of pressboards can improve axial natural frequency through formula analysis and simulation, and also the relations between the changes of axial pre-compression and axial natural vibration frequency on the windings are investigated. Finally, the proposed 2D model's effectiveness is proved when compared with tested ones.

引用

页码：431 / 436

页数：6

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