Modification and Experimental Verification of Oil-immersed Transformer Thermal Circuit Model

LUO Hanwu; LAI Wenqing; JIANG Guoyi; LIU Haibo; CUI Shigang; LI Jiaqi; JIANG Jiaxin; LI Mengqi

doi:10.13296/j.1001-1609.hva.2019.01.034

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Modification and Experimental Verification of Oil-immersed Transformer Thermal Circuit Model

更新时间：2025-04-26

- Modification and Experimental Verification of Oil-immersed Transformer Thermal Circuit Model
- High VoltageApparatus Vol. 55, Issue 1, Pages: 220-225(2019)
- 作者机构：
  
  1. 国网内蒙古东部电力有限公司检修分公司
  2. 国网内蒙古东部电力有限公司
  3. 国网电力科学研究院武汉南瑞有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.01.034
  CLC： TM411
- Published：2019
- 稿件说明：
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[1]罗汉武,来文清,姜国义,刘海波,崔士刚,李佳琦,姜佳昕,李梦齐.油浸式变压器热路模型的修正及实验验证[J].高压电器,2019,55(01):220-225.

LUO Hanwu, LAI Wenqing, JIANG Guoyi, et al. Modification and Experimental Verification of Oil-immersed Transformer Thermal Circuit Model[J]. High voltageapparatus, 2019, 55(1): 220-225.
[1]罗汉武,来文清,姜国义,刘海波,崔士刚,李佳琦,姜佳昕,李梦齐.油浸式变压器热路模型的修正及实验验证[J].高压电器,2019,55(01):220-225. DOI： 10.13296/j.1001-1609.hva.2019.01.034.

LUO Hanwu, LAI Wenqing, JIANG Guoyi, et al. Modification and Experimental Verification of Oil-immersed Transformer Thermal Circuit Model[J]. High voltageapparatus, 2019, 55(1): 220-225. DOI： 10.13296/j.1001-1609.hva.2019.01.034.

摘要

变压器绕组的热点温度是限制运行中变压器负载能力和影响变压器寿命的最大因素。快速准确地获取变压器绕组热点温度对变压器安全稳定运行具有重要意义。文中根据变压器不同的冷却方式

对变压器片式散热器的散热热阻进行了修正。并通过变压器温升实测数据与模型仿真计算数据的比较

验证了修正散热热阻后热路模型的有效性和准确性

从而得到了一个快速且较为准确的计算变压器热点温度的方法。

Abstract

The hot spot temperature of transformer winding is the biggest limiting factor in transformer load capacityand impact of the transformer life. Fast and accurate access to the transformer winding hot spot temperature is impor-tant to the safe and stable operation of the transformer. In this paper

the heat resistance of the radiator of the transform-er is modified according to the different cooling methods. The validity and accuracy of the improved thermal circuitmodel are verified by comparing the measured data of the temperature rise of the transformer with the simulation data of the model. And a fast and accurate method for calculating the hot spot temperature of the transformer is obtained.

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