Effect and Mechanism of Amine Compounds on Insulating Oil During Thermal Aging of Oil-paper Insulation

LIANG Ningchuan; LIAO Ruijin; YUAN Yuan; MO Yang; XIANG Min

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Effect and Mechanism of Amine Compounds on Insulating Oil During Thermal Aging of Oil-paper Insulation

更新时间：2025-12-08

- Effect and Mechanism of Amine Compounds on Insulating Oil During Thermal Aging of Oil-paper Insulation
- Vol. 46, Issue 2, Pages: 666-672(2020)
- 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. 中国电力科学研究院有限公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：29 February 2020，
  
  Published：2020
- 稿件说明：
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LIANG Ningchuan, LIAO Ruijin, YUAN Yuan, et al. Effect and Mechanism of Amine Compounds on Insulating Oil During Thermal Aging of Oil-paper Insulation[J]. 2020, 46(2): 666-672.
DOI：

LIANG Ningchuan, LIAO Ruijin, YUAN Yuan, et al. Effect and Mechanism of Amine Compounds on Insulating Oil During Thermal Aging of Oil-paper Insulation[J]. 2020, 46(2): 666-672. DOI：

摘要

为了研究胺类化合物对绝缘油的影响

在已有的研究基础上选取了基于二氰二氨、三聚氰胺及聚丙烯酰胺的复合热稳定剂

制备了含有不同配比复合热稳定剂及未添加任何试剂的绝缘纸

干燥浸油处理后通过30d130℃加速热老化实验

测量了绝缘油的酸值、水分、介电损耗和击穿电压等热老化特性。结果表明胺类化合物改性绝缘纸会导致绝缘油老化过程中水分含量降低

对击穿强电压影响较小

但绝缘油的酸值及介电损耗会明显增加

加速绝缘油劣化。当三聚氰胺、二氰二氨及聚丙烯酰胺添加量质量分数分别为2.25%、0.75%、0.2%时

绝缘纸的热稳定性提升最大

且对绝缘油老化特性影响效果较小。通过铜元素含量及前线轨道能隙分析

认为胺类化合物在老化过程中产生氨气

促进铜离子的生成

从而加速绝缘油的老化。

Abstract

In order to study the effect of amine compounds on insulating oil

based on existing researches

by selecting cyanamide

melamine and polyacrylamide as composite heat stabilizers

we prepared insulating papers containing different ratios of dicyandiamide

melamine and polyacrylamide and without reagent. After drying and oil immersing process

the thermal aging test was carried on at 130 ℃ for 30 days to measure the thermal aging characteristics of the insulating oil such as acid value

moisture

dielectric loss

and breakdown voltage. The results show that the amine compound modified insulating paper will reduce the moisture in the insulating oil

which has a negligible influence on the breakdown voltage of the insulating oil

but will accelerate deterioration of the insulating oil that lead to the increase of acid value and dielectric loss. Besides

the paper containing 2.25% Melamine

0.75% dicyandiamide and polyacrylamide

and 0.2% polyacrylamide has the greatest thermal stability and a negligible effect on insulating oil. Then through the analysis of copper content and frontier orbital energy gap

it is believed that ammonia produced by amine compounds promotes the formation of copper ions to accelerate the aging of insulating oil.

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