Effects of Sulfur Corrosion on the Properties of Oil-paper Insulation Induced by Dibenzyl Disulfide

被引：13
作者：
Gao, Si-hang [1 ]
Yang, Li-jun [2 ]
机构：
[1] Chongqing Univ Posts & Telecommun, Coll Automat, Minist Educ, Key Lab Ind Internet Things & Networked Control, Chongqing 400065, Peoples R China
[2] Chongqing Univ, State Key Lab Power Transmiss Equipment & Syst Se, Chongqing 400044, Peoples R China
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2019年 / 26卷 / 04期
关键词：
dibenzyl disulfide; oil-immersed insulation; corrosivity; oxidation resistance; copper sulfide; COPPER SULFIDE GENERATION; TRANSFORMERS; MECHANISM;
D O I：
10.1109/TDEI.2019.007866
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
As a corrosive sulfur, dibenzyl disulfide (DBDS) is an efficient antioxidant in oil-immersed insulation. This study explored the reaction mechanism of corrosive sulfur with copper through heating experiments stipulated by IEC 62535. Thermal aging experiments were further conducted at 130 degrees C under nitrogen to investigate the comprehensive effect of the oxidation resistance and corrosivity of DBDS on the properties of oil-paper insulation. Experimental results showed that DBDS can decompose into corrosive benzyl mercaptan at a high temperature. Dibenzyl sulfide cannot corrode copper to form copper sulfide at 150 degrees C. Furthermore, the oxidation resistance and corrosivity of DBDS depend on the dynamic change in DBDS concentrations. This study suggests that 25 mg/kg should be used as the maximum additive content of DBDS in oil. With this additive content, the oxidation resistance of oil can be improved, and the corrosion damage of insulation winding can be controlled to a certain extent.
引用
收藏
页码：1089 / 1097
页数：9
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