Effect of Loads on Temperature Distribution Characteristics of Oil-Immersed Transformer Winding

Authors

  • Zhengang Zhao 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China 2Yunnan Key Laboratory of Computer Technology Applications, Kunming 650000, China
  • Zhangnan Jiang Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China
  • Yang Li Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China
  • Chuan Li 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China 2Yunnan Key Laboratory of Computer Technology Applications, Kunming 650000, China
  • Dacheng Zhang 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China 2Yunnan Key Laboratory of Computer Technology Applications, Kunming 650000, China

DOI:

https://doi.org/10.13052/dgaej2156-3306.3728

Keywords:

Oil-immersed transformer, winding hot-spot, thermoelectric analogy, thermal model, transformer simulation device.

Abstract

The temperature of the hot-spots on windings is a crucial factor that can limit
the overload capacity of the transformer. Few studies consider the impact
of the load on the hot-spot when studying the hot-spot temperature and its
location. In this paper, a thermal circuit model based on the thermoelectric
analogy method is built to simulate the transformer winding and transformer
oil temperature distribution. The hot-spot temperature and its location under
different loads are qualitatively analyzed, and the hot-spot location is ana-
lyzed and compared to the experimental results. The results show that the
hot-spot position on the winding under the rated power appears at 85.88% of
the winding height, and the hot-spot position of the winding moves down by
5% in turn at 1.3, 1.48, and 1.73 times the rated power respectively.

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Author Biographies

Zhengang Zhao, 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China 2Yunnan Key Laboratory of Computer Technology Applications, Kunming 650000, China

Zhengang Zhao received his Bachelor degree in Electronic Science and
Technology, Master degree in Microelectronics and Solid State Electronics,
and Ph.D. degree in Microelectronics and Solid State Electronics from Harbin
Institute of Technology, Harbin, China, in 2005, 2007 and 2012, respec-
tively. He is currently an associate professor in the faculty of Information
Engineering and Automation at Kunming University of Science and Tech-
nology. He has authored or coauthored over 30 papers in major journals.
His current research interests include Optical Fiber Sensing technology and
Cyber-Physics Systems modeling.

Zhangnan Jiang, Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China

Zhangnan Jiang was born in Yunnan, China, in 1993. He received the
Bachelor of Engineering degree in electrical engineering and automation
from Kunming University of Science and Technology, China, in 2015. He is
currently pursuing the Master of Engineering degree in instrumentation engi-
neering from Kunming University of Science and Technology. His fields of
research interests are mainly focused on fiber bragg grating instrumentation
and hot-spot temperature of transformer winding.

Yang Li, Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China

Yang Li was born in Chongqing, China, in 1991. He received the Master of
Engineering degree in instrumentation engineering from Kunming University
of Science and Technology China, in 2019. His research interests include
fiber bragg grating instrumentation and transformer thermal circuit model

Chuan Li, 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China 2Yunnan Key Laboratory of Computer Technology Applications, Kunming 650000, China

Chuan Li, born in 1971, received his doctorate degree in optical engineering
from Tianjin University in 2002. On September 18, 2002, he was awarded
the 2001 Wang Daheng Award of Chinese Optical Society. In 2008, he was
awarded the Academic and Technical Leader of Yunnan Province. At present,
he is a professor and doctoral supervisor at Kunming University of Science
and Technology, and the chief professor of Information Detection and Pro-
cessing Innovation Team. His main research interests are sensor development
and detection applications.

Dacheng Zhang, 1Faculty of Information Engineering and Automation, Kunming University of Science and Technology, Kunming 650000, China 2Yunnan Key Laboratory of Computer Technology Applications, Kunming 650000, China

Dacheng Zhang received his Ph.D. degree in Control Systems from Com-
munauté Université Grenoble Alpes in 2018, Master degree in Electrical &
Electronic Engineering from Joseph Fourier University in 2014 and Bachelor
degree in Nuclear Engineering from both Grenoble Institute of Technology
and North China Electric Power University in 2009. His research inter-
ests include stochastic modeling of system, performance deterioration and
lifetime assessment.

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Published

2021-10-15

How to Cite

Zhao, Z. ., Jiang, Z. ., Li, Y., Li, C. ., & Zhang, D. . (2021). Effect of Loads on Temperature Distribution Characteristics of Oil-Immersed Transformer Winding. Distributed Generation &Amp; Alternative Energy Journal, 37(2), 237–254. https://doi.org/10.13052/dgaej2156-3306.3728

Issue

2022: Vol 37 Iss 2

Section

Articles