Insulation Condition Monitoring of Epoxy Resins Solid Dielectric in GIS Using Characteristic Gases COS and CS<sub>2</sub>

周文俊; 乔胜亚; 郑宇; 程林; 喻剑辉; 覃兆宇

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Insulation Condition Monitoring of Epoxy Resins Solid Dielectric in GIS Using Characteristic Gases COS and CS₂

更新时间：2025-12-08

- Insulation Condition Monitoring of Epoxy Resins Solid Dielectric in GIS Using Characteristic Gases COS and CS₂
- Vol. 43, Issue 8, Pages: 2551-2557(2017)
- 作者机构：
  
  1. 武汉大学电气工程学院
  2. 广州供电局有限公司
  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：
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- Published Online：31 August 2017，
  
  Published：2017
- 稿件说明：
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周文俊, 乔胜亚, 郑宇, et al. Insulation Condition Monitoring of Epoxy Resins Solid Dielectric in GIS Using Characteristic Gases COS and CS₂[J]. 2017, 43(8): 2551-2557.
DOI：

周文俊, 乔胜亚, 郑宇, et al. Insulation Condition Monitoring of Epoxy Resins Solid Dielectric in GIS Using Characteristic Gases COS and CS₂[J]. 2017, 43(8): 2551-2557. DOI：

摘要

为了提高化学诊断法用于GIS内盆式绝缘子等环氧树脂固体介质绝缘状态判断的准确性

在小型模拟平台上设置沿面放电及相关验证试验

研究了典型放电缺陷下SF6分解产物的变化规律。试验发现COS是一种重要的表征GIS内涉及环氧树脂固体介质绝缘放电的特征气体

且COS产生所需的放电程度强于CS

;用B3P86/6-31G（d

p）量子化学计算方法对COS产生机理进行了理论计算研究

得出了环氧树脂固体介质放电条件下COS的生成机理和能量条件

固体绝缘放电时由盆式绝缘子等环氧树脂介质表面被炭化提供碳源

通过中间体HCS与O2、CS

与OH两个主要反应途径生成COS。试验与理论计算结果表明:CS

在判断放电是否涉及环氧树脂固体绝缘上具有很高灵敏度

出现表示环氧树脂绝缘已出现放电;COS产生标志着环氧树脂介质放电程度严重

应缩短分解产物检测周期

加强对相关GIS气室的绝缘监测。

Abstract

To improve the accuracy of chemical diagnosis method used for estimating the insulation conditions of basin insulators and other epoxy resins solid dielectric in GIS

creeping discharge and related verification tests are set up to study the evolving law of SF6 decomposition products under typical discharge defects on a small apparatus. It is found that COS

as an important characteristic gas related to epoxy resins discharge

is produced under stronger discharge than CS

. B3P86/6-31G（d

p）

a method of calculation based on quantum chemistry

is adopted to explore the generating mechanism and energy conditions of COS when partial discharges occur on the solid dielectric

in GIS. Carbon which is a component of COS derives from basin insulators and other epoxy resin solid dielectric

and the reactions of intermediate HCS and O2 as well as CS

and OH are two main pathways to generate COS. Experiments and theoretical calculations show that decomposed gas CS

has a high sensitivity in judging whether the discharge is related to the epoxy resin solid dielectric

can be applied to diagnose faults related to creeping discharge on the epoxy resin. The generation of COS indicates that the discharge level on the epoxy spacer deepens

thus the decomposition products testing period should be shortened

and it is important to strengthen insulation monitoring of relevant GIS chamber.

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Related Author

周文俊

乔胜亚

郑宇

程林

喻剑辉

覃兆宇

LI Jianing

LI Zhe

Related Institution

广州供电局有限公司

国网电力科学研究院武汉南瑞有限责任公司

State Grid Electric Power Research Institute

上海交通大学电气工程学院

College of Chemistry and Molecular Sciences, Wuhan University

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Insulation Condition Monitoring of Epoxy Resins Solid Dielectric in GIS Using Characteristic Gases COS and CS2

DOI：

摘要

Abstract

关键词

Keywords

references

Insulation Condition Monitoring of Epoxy Resins Solid Dielectric in GIS Using Characteristic Gases COS and CS₂