Aging Detection of Composite Insulator with Nuclear Magnetic Resonance Theory

XU Zheng1; GUO Pan1; HE Xiao-long1; YI Shi-jun2

doi:10.13296/j.1001-1609.hva.2012.03.006

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Aging Detection of Composite Insulator with Nuclear Magnetic Resonance Theory

更新时间：2025-04-26

- Aging Detection of Composite Insulator with Nuclear Magnetic Resonance Theory
- High VoltageApparatus Vol. 48, Issue 3, Pages: 21-25(2012)
- 作者机构：
  
  1. 重庆大学输配电装备及系统安全与新技术国家重点实验室
  2. 重庆市电力公司教育培训中心
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2012.03.006
  CLC： TM216
- Published：2012
- 稿件说明：
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[1]徐征,郭盼,何晓龙,易世均.基于核磁共振原理的复合绝缘子老化问题研究[J].高压电器,2012,48(03):21-25.

XU Zheng1, GUO Pan1, HE Xiao-long1, et al. Aging Detection of Composite Insulator with Nuclear Magnetic Resonance Theory[J]. High voltageapparatus, 2012, 48(3): 21-25.
[1]徐征,郭盼,何晓龙,易世均.基于核磁共振原理的复合绝缘子老化问题研究[J].高压电器,2012,48(03):21-25. DOI： 10.13296/j.1001-1609.hva.2012.03.006.

XU Zheng1, GUO Pan1, HE Xiao-long1, et al. Aging Detection of Composite Insulator with Nuclear Magnetic Resonance Theory[J]. High voltageapparatus, 2012, 48(3): 21-25. DOI： 10.13296/j.1001-1609.hva.2012.03.006.

摘要

复合绝缘子老化的检测方法主要有直接观测法、紫外成像法、红外成像法、超声波法、电场分布法、憎水性检测法、泄漏电流检测法等。由于以上各种检测方法都有各种各样的不足之处而未能得到广泛的使用

笔者提出用核磁共振仪对使用不同年限的复合绝缘子进行实验

找出了能够表征复合绝缘子老化程度的特征量——横向弛豫时间和波峰面积。同时用阻抗分析仪测量复合绝缘子的相对介电常数

与横向弛豫时间和波峰面积比较

三者的变化规律相同

进而证明选取该特征量能够合理反应复合绝缘子的老化程度。

Abstract

The existing composite insulator aging detection methods

such as direct observation method

ultraviolet imaging method

infrared imaging method

ultrasonic method

electric field distribution method

hydrophobicity measurement method

and leakage current measurement method

are deficient.Therefore

the authors carried out lots of experiments on the composite insulators of different service years based on nuclear magnetic resonance to measure the inversion parameters

and achieved two characteristic quantities-horizontal relaxation time and area of wave crest which can represent the aging state of insulators.Relative permittivity of the composite insulators was measured by impedance analyzer to compare with horizontal relaxation time and area of wave crest

and the same trend of three parameters shows that the horizontal relaxation time can reasonably reflect the aging state of insulators.

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