Feasibility Study on Total Sugar as New Characteristic Parameter for the Thermal Aging of Paper Insulation Inside Oil-immersed Transformers

FU Qiang; LI Shengli; ZHANG Li; WANG Mengjun; HE Tao

doi:10.13296/j.1001-1609.hva.2020.09.030

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Feasibility Study on Total Sugar as New Characteristic Parameter for the Thermal Aging of Paper Insulation Inside Oil-immersed Transformers

更新时间：2025-04-26

- Feasibility Study on Total Sugar as New Characteristic Parameter for the Thermal Aging of Paper Insulation Inside Oil-immersed Transformers
- High VoltageApparatus Vol. 56, Issue 9, Pages: 203-209(2020)
- 作者机构：
  
  1. 广东电网有限责任公司电力科学研究院
  2. 华中科技大学
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2020.09.030
  CLC： TM411
- Published：2020
- 稿件说明：
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[1]付强,李胜利,张丽,王梦君,贺涛.总糖作为油浸变压器纸绝缘热老化新特征量的可行性研究[J].高压电器,2020,56(09):203-209.

FU Qiang, LI Shengli, ZHANG Li, et al. Feasibility Study on Total Sugar as New Characteristic Parameter for the Thermal Aging of Paper Insulation Inside Oil-immersed Transformers[J]. High voltageapparatus, 2020, 56(9): 203-209.
[1]付强,李胜利,张丽,王梦君,贺涛.总糖作为油浸变压器纸绝缘热老化新特征量的可行性研究[J].高压电器,2020,56(09):203-209. DOI： 10.13296/j.1001-1609.hva.2020.09.030.

FU Qiang, LI Shengli, ZHANG Li, et al. Feasibility Study on Total Sugar as New Characteristic Parameter for the Thermal Aging of Paper Insulation Inside Oil-immersed Transformers[J]. High voltageapparatus, 2020, 56(9): 203-209. DOI： 10.13296/j.1001-1609.hva.2020.09.030.

摘要

对油中纸绝缘材料在不同温度条件下进行加速热老化试验

以绝缘纸聚合度作为诊断纸绝缘老化程度的标准

采用蒽酮比色法测量了老化油样中的总糖含量

探究油中总糖、糠醛与聚合度的相关性关系。研究表明:聚合度在1 000～600范围内对应的油样中的总糖含量均随着聚合度降低而逐渐增大且总糖含量比糠醛含量变化更显著

故在老化前中期阶段

油中总糖可作为新的特征量来表征油纸绝缘老化程度;聚合度在600～200范围内对应的油样中总糖含量未呈现出统一的变化规律

故在老化中后期阶段

总糖无法用来表征油纸绝缘老化程度。检测油中总糖为诊断纸绝缘老化程度提供了一种新的思路。

Abstract

With the degree polymerization of insulating paper as the criterion for diagnosis of oil-paper insulation aging degree

accelerated thermal aging experiments were conducted on the paper insulation in different temperature.Total sugar in oil samples were measured by anthrone colorimetry.The correlation of total sugar and furfural with degree polymerization was investigated.The results show that with the decrease of degree polymerization

total sugar in the corresponding oil samples with the degree polymerization ranging from 1 000 to 600 indicate a tendency to increase and total sugar is much more significant than the changes of furfural

so total sugar can be used as a new characteristic parameter to characterize the oil-paper insulation aging degree during the mid-prophase of aging.However

total sugar in the corresponding oil samples with the degree polymerization ranging from 600 to 200 vary irregularly

thus total sugar cannot be used to characterize the oil-paper insulation aging degree during the mid-anaphase of aging.The determination of total sugar in oil provides a new idea for diagnosing the aging degree of oil-paper insulation.

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