Impedance Characteristics Analysis of Water Losing Processes on Polluted Electrified Railway Insulator Surface

LUO Shucai; SUN Jixing; WU Guangning; XU Yue; HU Xueyong; GAO Guoqiang

doi:10.13296/j.1001-1609.hva.2015.07.002

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Impedance Characteristics Analysis of Water Losing Processes on Polluted Electrified Railway Insulator Surface

更新时间：2025-04-26

- Impedance Characteristics Analysis of Water Losing Processes on Polluted Electrified Railway Insulator Surface
- High VoltageApparatus Vol. 51, Issue 7, Pages: 8-14(2015)
- 作者机构：
  
  1. 1. 国网四川检修公司
  2. 中国电力科学研究院
  3. 西南交通大学电气工程学院
  4. 青岛四方机车车辆股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.07.002
  CLC： U225.43;TM216
- Published：2015
- 稿件说明：
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[1]罗蜀彩,孙继星,吴广宁,徐跃,胡学永,高国强.电气化铁路绝缘子表面污秽失水过程的阻抗特性分析[J].高压电器,2015,51(07):8-14.

LUO Shucai, SUN Jixing, WU Guangning, et al. Impedance Characteristics Analysis of Water Losing Processes on Polluted Electrified Railway Insulator Surface[J]. High voltageapparatus, 2015, 51(7): 8-14.
[1]罗蜀彩,孙继星,吴广宁,徐跃,胡学永,高国强.电气化铁路绝缘子表面污秽失水过程的阻抗特性分析[J].高压电器,2015,51(07):8-14. DOI： 10.13296/j.1001-1609.hva.2015.07.002.

LUO Shucai, SUN Jixing, WU Guangning, et al. Impedance Characteristics Analysis of Water Losing Processes on Polluted Electrified Railway Insulator Surface[J]. High voltageapparatus, 2015, 51(7): 8-14. DOI： 10.13296/j.1001-1609.hva.2015.07.002.

摘要

为了研究污秽绝缘子失水过程的阻抗特性

采集电气化铁路沿线污秽进行分析

结果表明

污秽含水量降低到一定程度时

污秽阻抗角呈指数增长。通过人工污秽实验研究了不同等级污秽失水过程阻抗角变化。污秽失水过程中

污染等级不同阻抗角变化不同

含水量相同时

污染等级越高

阻抗角越小;表面盐密、灰密比例相同时

等效污秽失水过程阻抗角变化曲线差异明显

阻抗角受表面盐密影响明显。电气化铁路沿线污秽的含水量减少到一定程度时

污秽阻抗角呈指数增长

阻抗幅值在一定范围内变化相对缓慢;根据实验研究

提出了利用污秽失水过程阻抗幅值与阻抗角分布规律实现绝缘子污秽监测方法

对传统的利用泄漏电流监测污秽方法进行补充。

Abstract

To research impedance properties change in the process of water losing from polluted insulator surface

the pollution near electrified railway is collected and analyzed. The experiment result show that when the contamination moisture content is reduced to certain degree

its impedance angle growing exponentially while amplitude not obviously. In artificial pollution experiment

the pollution impedance and its angle characteristics of difference pollution levels are analyzed in drying process. Results show that when water content is the same

the higher of pollution level

the smaller of the impedance angle

the greater of the impedance amplitude. When proportions of equivalent salt deposit density（ESDD） and non-soluble deposit density（NSDD） are same

the impedance angle variation significantly. The influence of ESDD to pollution impedance is obvious. According to the experimental research

a method of insulator pollution degree monitoring is proposed by taking use of the impedance angle and amplitude changing regulation in the process of water losing from the contamination. This is added up to the traditional leakage current monitoring method.

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