Protection Effectiveness of Multiple Corrosive Sulfurs on Transformer Oil and Their Effect on Oil Quality

CONG Haoxi; PAN Hao; ZHANG Minhao; SHU Xiang; LI Qingmin; SUN Shuyan

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Protection Effectiveness of Multiple Corrosive Sulfurs on Transformer Oil and Their Effect on Oil Quality

更新时间：2025-12-08

- Protection Effectiveness of Multiple Corrosive Sulfurs on Transformer Oil and Their Effect on Oil Quality
- Vol. 46, Issue 8, Pages: 2864-2871(2020)
- 作者机构：
  
  1. 华北电力大学电气与电子工程学院
  2. 内蒙古电力(集团)有限责任公司
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published Online：31 August 2020，
  
  Published：2020
- 稿件说明：
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CONG Haoxi, PAN Hao, ZHANG Minhao, et al. Protection Effectiveness of Multiple Corrosive Sulfurs on Transformer Oil and Their Effect on Oil Quality[J]. 2020, 46(8): 2864-2871.
DOI：

CONG Haoxi, PAN Hao, ZHANG Minhao, et al. Protection Effectiveness of Multiple Corrosive Sulfurs on Transformer Oil and Their Effect on Oil Quality[J]. 2020, 46(8): 2864-2871. DOI：

摘要

目前对钝化剂防护有效性的研究主要集中在单一硫化物方面

为此文中探究了含有多重腐蚀性硫情况下不同钝化剂防护效果差异以及钝化剂对油品质量的影响。采用含有多种腐蚀性硫化物的福建水口变电站运行油在150℃下进行加速老化试验

通过比较TTA、Irgamet39、T571这3种钝化剂在多重腐蚀性硫并存环境中的防护有效性

获得了3种钝化剂的最佳添加量。通过测试添加最佳浓度钝化剂后的新油及运行油的工频击穿电压、介质损耗因数、体积电阻率以及水分含量

对比分析了3种钝化剂对油品质量的影响。研究结果表明:3种钝化剂中

TTA的防护效果最佳

质量分数为50×10

-6

即可保护铜片免受侵蚀

其它两种钝化剂即使质量分数达到200×10

-6

也无法做到完全防护

只能延缓铜片受到的侵蚀。Irgamet39的加入对油样击穿电压、介质损耗因数、体积电阻率、油中水分等特征参量影响最小

T571钝化剂次之

TTA因其难溶于油

即使充分搅拌后仍然会对油品质量产生较大影响。综合考虑钝化剂对油品质量的影响与经济性

推荐在变压器运行一段时间之后

向油中添加100×10

-6

质量分数的T571预防硫腐蚀。

Abstract

Current study of passivator protection is mainly focused on single type of sulfur. In this paper

the different protective effects of different passivators and the influence of passivators on oil quality under the condition of multiple corrosive sulfur were discussed. The running oil stemming from the substation in Shuikou Fujian

which contains various corrosive sulfides

was applied to the accelerated aging tests under the premise of 150 ℃. The passivator effectiveness of TTA

Irgamet 39

and T571 in coexistence of various corrosive sulfurs was verified. Moreover

the optimum concentration of three passivators was obtained. In additi

the breakdown voltage

dielectric loss factor

volume resistivity and moisture content with the new oil and the running oil were measured. Results show that the protection effectiveness of TTA is the best among the three passivators

and the copper plate can be well protected by erosion at 50×10

-6

. The others can not completely protect the copper even if the concentration reaches 200×10

-6

which can only delay the erosion of copper plate. The influence of addition of Irgamet 39 on the breakdown voltage

dielectric loss factor

volume resistivity and oil moisture is least

followed by T571 and TTA. Being difficult to dissolve in the oil

TTA has a great impact on the oil quality even after being fully mixed. After the influences of passivators on the oil quality and the economics are taken into consideration

it is recommended to add 100×10

-6

concentration of T571 into the transformer oil after some operation time to prevent the corrosive sulfur problem.

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