Corona Aging Characteristics of Composite Insulators Based on Orthogonal Experiment

LIANG Ying; DONG Pingping; GAO Lijuan

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Corona Aging Characteristics of Composite Insulators Based on Orthogonal Experiment

更新时间：2025-12-08

- Corona Aging Characteristics of Composite Insulators Based on Orthogonal Experiment
- Vol. 44, Issue 12, Pages: 4083-4089(2018)
- 作者机构：
  
  1. 华北电力大学河北省输变电设备安全防御重点实验室
  2. 国网江苏省电力有限公司宿迁供电分公司
  3. 国网河北省电力有限公司衡水供电分公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 December 2018，
  
  Published：2018
- 稿件说明：
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LIANG Ying, DONG Pingping, GAO Lijuan. Corona Aging Characteristics of Composite Insulators Based on Orthogonal Experiment[J]. 2018, 44(12): 4083-4089.
DOI：

LIANG Ying, DONG Pingping, GAO Lijuan. Corona Aging Characteristics of Composite Insulators Based on Orthogonal Experiment[J]. 2018, 44(12): 4083-4089. DOI：

摘要

为研究气压、湿度及老化时间对硅橡胶复合绝缘子电晕老化过程的影响

首先构建气压、湿度可调的硅橡胶电晕加速老化试验平台

采用正交试验法开展了硅橡胶材料的电晕老化试验

对老化后的试样进行了热刺激电流（TSC）测试、扫描电镜（SEM）和傅里叶红外光谱（FTIR）测试。基于陷阱电荷量的极差结果表明:气压水平的变动对陷阱电荷量的影响最大

其次是湿度和老化时间;同时

通过TSC和SEM分析发现

低气压下

湿度越高

试样的陷阱电荷量越多

且老化时间越长

湿度的影响越显著;随着气压的升高

湿度对陷阱电荷量的贡献逐步减少

而与老化作用时间有关

老化时间越长

试样的陷阱电荷量越多。同时

通过TSC测试、SEM和FTIR测试得到的老化程度排序结果并不一致

而TSC测试结果能够更全面地体现由于材料物化缺陷而导致的电晕老化特性。因此

可将TSC测试结果作为老化程度的有效判据。

Abstract

We studied the corona aging characteristics of silicone rubber composite insulator by orthogonal tests in order to study the effects of pressure

humidity and aging time on the corona aging process. Meanwhile

we constructed a corona accelerated aging test platform of silicon rubber with adjustable air pressure and humidity

and used thermally stimulated current（TSC）

scanning electron microscopy（SEM） and Fourier transform infrared spectroscopy（FTIR） to test the aged samples. The results of the range analysis showed that the changes of the pressure had the most significant influence on the trap charges

followed by the humidity and the aging time. Combined with TSC and SEM

it was found that there was more trap charges when the humidity was higher

and the humidity was more significant with the longer aging time. However

it could be seen from the TSC

SEM and FTIR tests that the results of aging states were inconsistent

and TSC tests had more influences on the corona aging characteristics caused by physical and chemical defects. Therefore

TSC results could be used as an effective criterion for the aging states.

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