Analytical model for real-time calculating hot-spot temperature of main transformer

被引：0

作者：

Yang Z. ^{[1
]}

Wu Y. ^{[2
]}

Wang J. ^{[1
]}

Cui L. ^{[1
]}

Jiang C. ^{[1
]}

Zhu H. ^{[2
]}

Ge L. ^{[1
]}

机构：

[1] Jiangsu Collaborative Innovation Center of Smart Distribution Network, Nanjing Institute of Technology, Nanjing

[2] State Grid Jiangsu Electric Power Company, Nanjing

来源：

Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2016年 / 36卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Analytical model; Electric transformers; Equivalent thermal circuit; Hot-spot temperature; Main transformer; Top-layer oil temperature; Winding time constant;

D O I：

10.16081/j.issn.1006-6047.2016.11.022

中图分类号：

学科分类号：

摘要：

An analytical model based on the equivalent thermal circuit of top-layer oil and winding is proposed, which calculates the hot-spot temperature of oil-immersed main transformer in real time according to the acquired data of its load factor and top oil temperature. A corresponding scheme for determining the winding time-constant is also proposed. Case calculation and analysis are carried out for a 334 MV·A/500 kV main transformer and the results are compared with those by the hot-spot temperature calculation formula of GB/T15164-1994, which show the effectiveness and accuracy of the proposed model and scheme. The defect of the hot-spot temperature formula of GB/T 15164-1994 is pointed out. © 2016, Electric Power Automation Equipment Press. All right reserved.

引用

页码：147 / 151

页数：4

共 13 条

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