Fracture Analysis of High Voltage Post Porcelain Insulators

CHEN Linyi; SHUAI Yong; HU Jiarui; LIU Chun; OUYANG Kejian; XIE Yi

doi:10.13296/j.1001-1609.hva.2015.07.013

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Fracture Analysis of High Voltage Post Porcelain Insulators

更新时间：2025-04-26

- Fracture Analysis of High Voltage Post Porcelain Insulators
- High VoltageApparatus Vol. 51, Issue 7, Pages: 69-73(2015)
- 作者机构：
  
  1. 武汉大学
  2. 国网常德供电分公司
  3. 湖南省电力公司科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.07.013
  CLC： TM216
- Published：2015
- 稿件说明：
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[1]陈琳依,帅勇,胡加瑞,刘纯,欧阳克俭,谢亿.高压支柱瓷绝缘子断裂分析[J].高压电器,2015,51(07):69-73.

CHEN Linyi, SHUAI Yong, HU Jiarui, et al. Fracture Analysis of High Voltage Post Porcelain Insulators[J]. High voltageapparatus, 2015, 51(7): 69-73.
[1]陈琳依,帅勇,胡加瑞,刘纯,欧阳克俭,谢亿.高压支柱瓷绝缘子断裂分析[J].高压电器,2015,51(07):69-73. DOI： 10.13296/j.1001-1609.hva.2015.07.013.

CHEN Linyi, SHUAI Yong, HU Jiarui, et al. Fracture Analysis of High Voltage Post Porcelain Insulators[J]. High voltageapparatus, 2015, 51(7): 69-73. DOI： 10.13296/j.1001-1609.hva.2015.07.013.

摘要

高压支柱瓷绝缘子断裂事故频有发生

严重威胁电网的安全运行。文中结合某站绝缘子断裂事故

对其进行了宏观检查及微观组织检测

分析结果表明:该类型绝缘子存在缺砂及胶装气孔严重缺陷

同时微观组织中存在气孔率偏高、玻璃相裂纹、Ti O2杂质相等缺陷

在微观上会形成裂纹源

导致了绝缘子强度的降低

并对其提出了相应的监督措施

对设计、制造、运行有一定的借鉴意义。

Abstract

Fracture accidents of post porcelain insulators happen frequently

which seriously threatens safe operation of the power grid. In this study

a fracture accident of the insulator in a substation was investigated. The macroscopic check and microstructure analysis were conducted

and the results showed that this insulator has the defects of sand absence

serious binding pores

high porosity

cracks in glass phase

and Ti O2 contamination in microstructure

which may form the sources of cracks to weaken the strength of the insulator. Accordingly

some countermeasures are suggested in terms of the design

manufacture

and operation of this type of insulators.

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