GIS内环氧树脂绝缘沿面放电强度与产气关联规律的模拟实验

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摘要为了解SF₆气体绝缘电气设备中环氧树脂固体绝缘沿面放电强度与特征气体之间的关联规律,搭建了固体绝缘表面附着铜粉的缺陷模型。实验发现,放电涉及环氧树脂固体绝缘时,不同特征气体呈现的增长特性不同;放电强度不同,同一特征气体的增长特性也有差异。通过对不同特征气体与CS₂含量之间的比值特性研究,发现在不同放电强度下,特征气体含量的比值特性不同。对比在两种放电强度下产生的特征气体(如SOF₂、SO₂、CS₂等)的含量、增长规律、特征比值等特征量,研究了特征气体与放电强度之间的关系及不同特征气体之间的内在关联,为用特征气体检测法诊断设备内部固体绝缘的状态提供了新方法。

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	郑晓光
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	周文俊

关键词 ： GIS, 固体绝缘, 特征气体, 沿面放电, CS₂

Abstract：In order to establish the relationship between the intensity of solid epoxy insulation surface discharge in SF₆ equipment and the increasing law of characteristic gases,corresponding defect model with copper attached to the surface is set up in this paper.It is found in the experiment that different gases present different growth characteristics,even the same gas takes on different growth characteristics under different discharge strength.The ratio between the concentration of different gases and CS₂ is studied,which presents totally different characteristics withdifferent levels of discharge.The species,concentration and trends over time of characteristic gases under tow levels of discharge are compared.The gases include SOF₂,SO₂,CS₂ etc.,which are generated under two different discharge intensities.By studying the relationship between the gases and the discharge strength,and the inherent relationship between the gases,the state of internal solid insulation can be diagnosed using characteristic gas analysis.

Key words： GIS solid insulation characteristic gases creeping discharge CS₂

收稿日期: 2014-11-26 出版日期: 2015-12-07

PACS:

TM855

作者简介: 郑晓光男,1966年生,硕士,高级工程师,研究方向为高电压技术。郑宇男,1992年生,硕士研究生,研究方向为SF₆电气设备绝缘在线监测与故障诊断。

引用本文:

郑晓光,郑宇,唐念,李丽,周文俊. GIS内环氧树脂绝缘沿面放电强度与产气关联规律的模拟实验[J]. 电工技术学报, 2015, 30(17): 172-179. Zheng Xiaoguang,Zheng Yu,Tang Nian,Li Li,Zhou Wenjun. Analog Experiment on the Relationship Between the Intensity of Epoxy Solid Insulation Surface Discharge and the Increasing Law of Characteristic Gases in GIS. Transactions of China Electrotechnical Society, 2015, 30(17): 172-179.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I17/172

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