Computation of Eddy Current Loss of Structural Parts for UHV Autotransformer Transformer Under DC Magnetic Bias

XU Jianwen; LI Mingyang; LI Shulian; DU Jianping

doi:10.13296/j.1001-1609.hva.2018.06.023

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Computation of Eddy Current Loss of Structural Parts for UHV Autotransformer Transformer Under DC Magnetic Bias

更新时间：2025-04-26

- Computation of Eddy Current Loss of Structural Parts for UHV Autotransformer Transformer Under DC Magnetic Bias
- High VoltageApparatus Vol. 54, Issue 6, Pages: 150-157(2018)
- 作者机构：
  
  1. 山东电力设备有限公司
  2. 华北电力大学高电压与电磁兼容北京市重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.06.023
  CLC： TM41
- Published：2018
- 稿件说明：
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[1]胥建文,李明洋,李书连,杜建平.特高压变压器直流偏磁涡流损耗计算分析[J].高压电器,2018,54(06):150-157.

XU Jianwen, LI Mingyang, LI Shulian, et al. Computation of Eddy Current Loss of Structural Parts for UHV Autotransformer Transformer Under DC Magnetic Bias[J]. High voltageapparatus, 2018, 54(6): 150-157.
[1]胥建文,李明洋,李书连,杜建平.特高压变压器直流偏磁涡流损耗计算分析[J].高压电器,2018,54(06):150-157. DOI： 10.13296/j.1001-1609.hva.2018.06.023.

XU Jianwen, LI Mingyang, LI Shulian, et al. Computation of Eddy Current Loss of Structural Parts for UHV Autotransformer Transformer Under DC Magnetic Bias[J]. High voltageapparatus, 2018, 54(6): 150-157. DOI： 10.13296/j.1001-1609.hva.2018.06.023.

摘要

为了分析直流偏磁对特高压自耦变压器结构件的损耗分布的影响

文中考虑拉板、夹件、铜屏蔽等结构件

并利用结构的对称性

建立特高压自耦变压器的1/8涡流场计算模型。以负载运行时不同直流偏磁下的线圈电流作为激励源进行瞬态仿真

分析了不同直流偏磁下变压器各结构件上的涡流损耗的分布规律。由结果可见

随着直流量的增大

各结构件上的损耗显著增大

且各结构件上的损耗分布不均匀

漏磁大的地方损耗较大。

Abstract

To analyze the influence of DC magnetic bias on the eddy current loss distribution of UHVautotransformer’s structural parts

a finite element model of eighth eddy current field of the autotransformer isestablished considering the structural parts

such as the pull plate

clamp and copper shield

as well as thesymmetry of the structure. And transient simulation is conducted under the coil current excitation with differentDC magnetic bias to obtain the loss distribution on each structural part. It is found that with the increase in theDC bias current

the loss on each structural part rises significantly with uneven distribution

where moremagnetic flux leakage results in more loss.

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