Decomposition Characteristics of SF<sub>6</sub> Under Floating Potential Defects Relating to Insulating Materials

JI Shengchang; GAO Lu; ZHONG Lipeng; ZHU Lingyu; WANG Wenhao; HE Wenlin

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Decomposition Characteristics of SF₆ Under Floating Potential Defects Relating to Insulating Materials

更新时间：2025-12-08

- Decomposition Characteristics of SF₆ Under Floating Potential Defects Relating to Insulating Materials
- Vol. 44, Issue 1, Pages: 201-209(2018)
- 作者机构：
  
  1. 西安交通大学电力设备电气绝缘国家重点实验室
  2. 国网湖南省电力公司电力科学研究院
  3. 国网浙江省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 January 2018，
  
  Published：2018
- 稿件说明：
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JI Shengchang, GAO Lu, ZHONG Lipeng, et al. Decomposition Characteristics of SF₆ Under Floating Potential Defects Relating to Insulating Materials[J]. 2018, 44(1): 201-209.
DOI：

JI Shengchang, GAO Lu, ZHONG Lipeng, et al. Decomposition Characteristics of SF₆ Under Floating Potential Defects Relating to Insulating Materials[J]. 2018, 44(1): 201-209. DOI：

摘要

为了探究SF

气体在悬浮电位缺陷下的分解特性

构建了SF

分解实验平台及悬浮电位缺陷模型

分别在不同外施电压以及气压下进行了放电分解实验。结果表明

该缺陷类型下的主要典型分解产物包括SO

、SOF2、CO

、SO

4种

其产气速率由高到低依次为:CO

、SOF

、SO

和SO

且其体积分数φ的变化规律受到放电量及其充装气压的影响。φ（SOF

+SO

）/φ（SO

F2）和φ（SOF

+SO

）/φ（CO

）随加压时间表现出较好的稳定性。因此

可以利用几种典型产物的体积分数变化规律及浓度比值作为判断局部放电强度及缺陷类型的特征量。

Abstract

In order to study the decomposition characteristics of SF

under floating potential defects

an experimental platform with a physical model of floating potential defect was constructed.Partial discharge and decomposition experiments were then performed under different applied voltages and pressures.Experimental results show that main decomposition products under floating potential defects include SO

SOF

and SO

among which the formation rate from high to low in order is:CO

SOF

and SO

.The volume fraction vari

ation of the main products（φ） is affected by the applied voltages and pressures.Besides

the values of φ（SOF

+SO

）/φ（SO

） and φ（SOF

+SO

）/φ（CO

） maintain stable with the prolonging of pressurization time.Therefore

it is possible to judge the strength of PD and the type of insulation defects by utilizing the volume fraction variation of typical decomposition products and their concentration ratios.

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Related Institution

School of Electrical Engineering and Automation, Wuhan University

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State Grid Chongqing Power Company

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Decomposition Characteristics of SF6 Under Floating Potential Defects Relating to Insulating Materials

DOI：

摘要

Abstract

关键词

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references

Decomposition Characteristics of SF₆ Under Floating Potential Defects Relating to Insulating Materials