Statistical Flashover Characteristic Analysis for Artificially Iced Disk-shaped and Suspension DC Insulators

YANG Jian-lan1; SHU Li-chun2; JIANG Xing-liang2; ZHOU Tian-chun2; SONG Yu1

doi:10.13296/j.1001-1609.hva.2011.08.011

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Statistical Flashover Characteristic Analysis for Artificially Iced Disk-shaped and Suspension DC Insulators

更新时间：2025-04-26

- Statistical Flashover Characteristic Analysis for Artificially Iced Disk-shaped and Suspension DC Insulators
- High VoltageApparatus Vol. 47, Issue 8, Pages: 33-37(2011)
- 作者机构：
  
  1. 重庆市电力公司江北供电局
  2. 输配电装备及系统安全与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2011.08.011
  CLC： TM216
- Published：2011
- 稿件说明：
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[1]杨剑蓝,舒立春,蒋兴良,周天春,宋昱.盘形悬式绝缘子直流冰闪电压值的统计特性研究[J].高压电器,2011,47(08):33-37.

YANG Jian-lan1, SHU Li-chun2, JIANG Xing-liang2, et al. Statistical Flashover Characteristic Analysis for Artificially Iced Disk-shaped and Suspension DC Insulators[J]. High voltageapparatus, 2011, 47(8): 33-37.
[1]杨剑蓝,舒立春,蒋兴良,周天春,宋昱.盘形悬式绝缘子直流冰闪电压值的统计特性研究[J].高压电器,2011,47(08):33-37. DOI： 10.13296/j.1001-1609.hva.2011.08.011.

YANG Jian-lan1, SHU Li-chun2, JIANG Xing-liang2, et al. Statistical Flashover Characteristic Analysis for Artificially Iced Disk-shaped and Suspension DC Insulators[J]. High voltageapparatus, 2011, 47(8): 33-37. DOI： 10.13296/j.1001-1609.hva.2011.08.011.

摘要

人工覆冰试验长期以来被人们用来作为覆冰绝缘试验的一种重要手段。而当前

基于对盘形悬式绝缘子直流覆冰输电线路外绝缘特性研究的试验方法

尚无一部统一的标准

试验方法和结果差异很大。因此

对盘形悬式绝缘子直流覆冰试验方法进行研究

对直流覆冰输电线路外绝缘特性的研究具有重大的意义。笔者在直径为7.8 m、高为11.6 m的大型多功能人工气候室和直径为2.0 m、长为3.8 m的低温低气压气候室以直流绝缘子串覆冰闪络特性为目标

运用数理统计方法得到了均匀升压法所需的最小有效试验样本数。结果表明

覆冰绝缘子交流闪络电压服从正态分布

采用均匀升压法进行覆冰闪络试验的最小样本数为20。

Abstract

Artificial icing test has long been employed as an important approach to evaluate icing insulation.However

there is no any uniform test standard for studying the characteristics of external insulation of porcelain and glass insulators

and iced DC transmission lines.In this paper

the flashover characteristic of iced insulator strings is investigated based on experiments carried out in a multifunctional artificial climate chamber with diameter of 7.8 m and height of 11.6 m and in a low temperature and low pressure test chamber with diameter of 2.0 m and length of 3.8 m.Adopting the statistical methods

the number of the least effective test samples for satisfying the equably boosting voltage method is obtained.Results show that the DC flashover voltage of ice-coated insulators conforms to normal distribution

and the number of the least effective test samples demanded by the equably boosting method is 20.

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