Study on Polarization/Depolarization Current Characteristic of Oil-impregnated Insulation Paper with Non-uniform Thermal Aging

SUI Bin; CAO Jianjun; SONG Zhenjie; YIN Xiaobing

doi:10.13296/j.1001-1609.hva.2018.01.031

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Study on Polarization/Depolarization Current Characteristic of Oil-impregnated Insulation Paper with Non-uniform Thermal Aging

更新时间：2025-04-26

- Study on Polarization/Depolarization Current Characteristic of Oil-impregnated Insulation Paper with Non-uniform Thermal Aging
- High VoltageApparatus Vol. 54, Issue 1, Pages: 207-212(2018)
- 作者机构：
  
  1. 雅砻江流域水电开发有限公司
  2. 国网绍兴供电局
  3. 四川电力设计咨询有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.01.031
  CLC： TM855
- Published：2018
- 稿件说明：
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[1]隋彬,曹建军,宋臻杰,尹小兵.不均匀热老化油浸绝缘纸的极化/去极化电流特性研究[J].高压电器,2018,54(01):207-212.

SUI Bin, CAO Jianjun, SONG Zhenjie, et al. Study on Polarization/Depolarization Current Characteristic of Oil-impregnated Insulation Paper with Non-uniform Thermal Aging[J]. High voltageapparatus, 2018, 54(1): 207-212.
[1]隋彬,曹建军,宋臻杰,尹小兵.不均匀热老化油浸绝缘纸的极化/去极化电流特性研究[J].高压电器,2018,54(01):207-212. DOI： 10.13296/j.1001-1609.hva.2018.01.031.

SUI Bin, CAO Jianjun, SONG Zhenjie, et al. Study on Polarization/Depolarization Current Characteristic of Oil-impregnated Insulation Paper with Non-uniform Thermal Aging[J]. High voltageapparatus, 2018, 54(1): 207-212. DOI： 10.13296/j.1001-1609.hva.2018.01.031.

摘要

为研究温度梯度存在下

变压器油浸绝缘纸不均匀老化极化/去极化电流特性

文中在实验室条件下搭建不均匀热老化试验平台

进行不同温度梯度作用下油浸绝缘纸的不均匀热老化试验。通过测定试样的聚合度和极化/去极化电流得出如下结论:在温度梯度作用下

高温受热绝缘纸的聚合度下降速率大于低温受热绝缘纸;油浸绝缘纸老化后期

聚合度下降速度变缓;在同一温度等级下

处于温度梯度下的油浸绝缘纸老化更严重。油浸绝缘纸受热温度升高

其极化/去极化电流均向左上方平移

电导率增大;在同一温度等级下

油浸绝缘纸不均匀老化下的极化/去极化电流值更大;局部温度升高会加剧油浸绝缘纸老化。

Abstract

To investigate the polarization/depolarization current characteristics of transformer oil-immersed paperwith non-uniform aging under temperature gradient

this paper build a non-uniform thermal aging test platform underlaboratory condition and perform non-uniform aging thermal test under different temperature gradients for oil-impregnated paper. Then

make conclusions by measuring degree of polymerization and polarization/depolarizationcurrents. The results show that degree of polymerization of high temperature heated objects reduce faster than lowtemperature heated objects under temperature gradient and reduce slow in final aging. At the same temperaturegrade

oil-impregnated paper aging more serious under temperature gradient. Higher oil-impregnated paper heatedtemperature

larger its polarization/depolarization currents and the conductivity. At the same temperature grade

thepolarization and depolarization current values of oil-impregnated paper under temperature gradient are larger andlocal temperature rising will accelerate oil-impregnated paper aging.

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