腐蚀性硫对变压器引线绝缘的影响分析  

Analysis of Influences of Corrosive Sulfur on Insulation of Transformer Leads

作　　者：潘文 郇述钢 李宁 陈新 PAN Wen;HUAN Shugang;LI Ning;CHEN Xin(Changzhou Toshiba Transformer Co.,Ltd.,Changzhou 213012,China)

机构地区：[1]常州东芝变压器有限公司,江苏常州213012

出　　处：《山东电力高等专科学校学报》2023年第4期1-6,共6页Journal of Shandong Electric Power College

摘　　要：对一台500 kV三相一体自耦变压器发生故障的原因进行分析,通过变压器油中腐蚀性硫的测试、引线绝缘纸的成分分析、耐受电压、聚合度的测量,以及引线对比样本的绝缘耐压测试和分析,揭示了腐蚀性硫对变压器的影响不能仅关注其对绕组的影响,还要对处于高电位包纸绝缘的铜绞线引线进行综合评价,以保证油中含有腐蚀性硫的变压器长期安全可靠运行。The fault causes of a 500 kV three-phase compact auto-transformer are analyzed.The test of corrosive sulfur in trans⁃former oil,the composition analysis of lead insulation paper,the measurement of withstanding voltage and polymerization degree,and the insulation withstanding voltage test and analysis of lead comparison samples reveal that the impact of corrosive sulfur on transformers should not only focus on transformer windings,but also need to comprehensively evaluate the copper stranded wire leads with paper insulation at high potential,so as to ensure the long-term safe and reliable operation of transformers using trans⁃former oil with corrosive sulfur.

关 键 词：变压器油 腐蚀性硫 引线绝缘 

分 类 号：TM85[电气工程—高电压与绝缘技术]