Structural reliability assessment for conductor rods of transformer bushings

TIAN Tian; DAI Longcheng; ZHOU Xiu; YANG Weidong; BAI Jin; CHEN Deizhi

doi:10.3969/j.issn.1672-3643.2025.04.009

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Structural reliability assessment for conductor rods of transformer bushings

更新时间：2025-11-08

- Structural reliability assessment for conductor rods of transformer bushings
- Ningxia Electric Power Issue 4, (2025)
- 作者机构：
  
  1. 国网宁夏电力有限公司电力科学研究院,宁夏,银川,750011
  2. 沈阳工业大学,辽宁,沈阳,110801
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.1672-3643.2025.04.009
  CLC：
- Published Online：20 August 2025，
  
  Published：20 August 2025
- 稿件说明：
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TIAN Tian, DAI Longcheng, ZHOU Xiu, et al. Structural reliability assessment for conductor rods of transformer bushings[J]. Ningxia electric power, 2025, (4).
DOI：

TIAN Tian, DAI Longcheng, ZHOU Xiu, et al. Structural reliability assessment for conductor rods of transformer bushings[J]. Ningxia electric power, 2025, (4). DOI： 10.3969/j.issn.1672-3643.2025.04.009.

摘要

大型变压器高压套管导电杆在长期运行过程中受到多种机械应力的作用，会导致导电杆出现变形、断裂等故障，因此系统评估变压器套管导电杆机械结构的可靠性具有重要意义。本文综合运用理论计算、模拟仿真、试验检测等方法，开展套管导电杆机械结构可靠性评估，并结合某750 kV变压器套管导电杆断裂故障，明确该套管导电杆断裂原因为载流连接件存在设计缺陷，最后提出高压套管导电杆结构可靠性提升建议。

Abstract

The conductor rods of high-voltage bushings in large transformers are subjected to various mechanical stresses during long-term operation

which can lead to faults such as deformation and fracture of the conductive rods.Therefore

it is of great significance to systematically evaluate the mechanical structural reliability of the conductor rods of transformer bushings.This paper comprehensively employs methods such as theoretical calculation

simulation

and test detection to conduct the mechanical structural reliability assessment of bushing conductor rods.Combined with the fracture fault of a bushing conductor rod of a certain 750 kV transformer

it is clarified that the fracture cause of the bushing conductor rod is the design defect of the current-carrying connection component.Finally

suggestions for improving the structural reliability of high-voltage bushing conductor rods are proposed.

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