Investigation on Corrosive and Antioxidant of Dibenzyl Disulfide in Mineral Insulation Oil

GAO Sihang; YANG Lijun; DENG Bangfei; ZHANG Jiang; HUANG Jiajia

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Investigation on Corrosive and Antioxidant of Dibenzyl Disulfide in Mineral Insulation Oil

更新时间：2025-12-08

- Investigation on Corrosive and Antioxidant of Dibenzyl Disulfide in Mineral Insulation Oil
- Vol. 44, Issue 12, Pages: 3833-3839(2018)
- 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. 国网重庆市电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 December 2018，
  
  Published：2018
- 稿件说明：
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GAO Sihang, YANG Lijun, DENG Bangfei, et al. Investigation on Corrosive and Antioxidant of Dibenzyl Disulfide in Mineral Insulation Oil[J]. 2018, 44(12): 3833-3839.
DOI：

GAO Sihang, YANG Lijun, DENG Bangfei, et al. Investigation on Corrosive and Antioxidant of Dibenzyl Disulfide in Mineral Insulation Oil[J]. 2018, 44(12): 3833-3839. DOI：

摘要

矿物绝缘油中的二苄基二硫醚（DBDS）作为一种腐蚀性硫化物

同时也发挥着其对油纸绝缘的抗氧化作用。为此深入研究了油中二苄基二硫醚的腐蚀性与抗氧化性对油纸绝缘特性的综合影响规律。为此

分别制备了DBDS质量分数为0～200×10

–6

的8种绝缘油样品

将纸包铜绕组浸渍于其中

并在130℃的氮气环境下开展480 h的油硫腐蚀试验。之后将铜绕组展开

并观察与分析铜导体与绝缘纸表面的腐蚀形貌

测试绝缘油的工频介损、体积电阻率、酸值、铜离子含量

并对绝缘油的起始氧化温度及油中物质官能团变化情况进行了测试

分析了DBDS的腐蚀性与抗氧化性对绝缘油性能的综合影响规律。结果表明:当绝缘油中DBDS质量分数

25×10

–6

时

DBDS的抗氧化性作用占据主导

绝缘油的氧化稳定性得到提升

绝缘油的性能优于无DBDS的油样

当油中DBDS质量分数>25×10

–6

其腐蚀性作用就会占据主导

油中的铜硫腐蚀反应会导致油酸值与铜离子的进一步增加

而油中铜与酸的增加又会加速绝缘油的老化。

Abstract

As a kind of sulfur antioxidant in mineral insulating oil

dibenzy1 disulfide（DBDS） is also an efficient antioxidant in oil-paper insulation. To investigate the comprehensive effects of the corrosivity and the oxidation resistance of DBDS on the properties of oil-paper insulation

oil samples with different DBDS concentrations(0～200×10

–6

) were prepared and used to perform thermal aging experiments together with insulation windings at 130 ℃ under the condition of nitrogen for 480 h. After the aging experiment

we observed the corrosion morphology of the surface of copper strip and insulating paper after disintegration of the insulation winding

measured and analyzed the properties of di

electric loss

resistivity volume

acid value and copper content

and investigated the starting oxidation temperature and the functional groups of different oil samples. Moreover

we discussed the comprehensive effects of the corrosivity and the oxidation resistance of DBDS on the aging characteristics of insulating oil. Experimental results show that when the insulating oil contains less than 25×10

–6

DBDS

and the antioxidant effect of DBDS is dominant. The oxidation stability of insulating oil will be improved

the performance of oil is better than that of samples excluding DBDS

and the corrosive effect of DBDS will be greater than its antioxidant effect when the insulating oil contains more than 25×10

–6

DBDS. Copper ions and acid will be accelerated due to the corrosion reaction

which will accelerate the aging of oil.

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