Thermal Network Model of High-Power Dry-Type Transformer Coupled with Electromagnetic Loss

被引：9

作者：

Chen, Yifan

Yang, Qingxin

Zhang, Changgeng ^{[1
]}

Li, Yongjian

Li, Xinghan

机构：

[1] Hebei Univ Technol, State Key Lab Reliabil & Intelligence Elect Equip, Tianjin 300130, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2022年 / 58卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Windings; Power transformer insulation; Finite element analysis; Computational fluid dynamics; Temperature distribution; Eddy currents; Thermal resistance; Computational fluid dynamics (CFD); convective heat transfer coefficient; dry-type transformer; FEM; thermal network method; TEMPERATURE RISE;

D O I：

10.1109/TMAG.2021.3104090

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：

Based on thermoelectric analogy method, a thermal network model coupled with electromagnetic loss is presented. According to the actual structure of dry-type transformer windings, an accurate thermal network is established. Considering the distribution characteristics of heat source along the cooling ducts inside the dry-type transformer, the thermal parameters such as heat flux and convective heat transfer coefficients are calculated by finite element method (FEM) analysis and computational fluid dynamics (CFD). Based on the temperature rise experiment, the hottest spot located at the top of the outmost high-voltage (HV) winding is 151.8 degrees C, which verified the correctness of thermal network model.

引用

页数：5

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