腐蚀性硫化物对绝缘绕组局部放电特性的影响  

Influence of Corrosive Sulfide on Partial Discharge Characteristics of Insulation Winding

作　　者：陆云才 张将[2] 蔚超 廖才波 杨丽君[2] LU Yueai;ZHANG Jiang;WEI Chao;LIAO Caibo;YANG Lijun(State Grid Jiangsu Electric Power Co.,Ltd.Electric Power Research Institute,Nanjing 211103,China;State Key Laboratory of Power Transmission Equipment ＆ System Security and New Technology（Chongqing University）,Chongqing 400044,China)

机构地区：[1]国网江苏省电力有限公司电力科学研究院,江苏南京211103 [2]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆400044

出　　处：《电力工程技术》2018年第5期75-80,共6页Electric Power Engineering Technology

基　　金：国家自然科学基金委员会-国家电网公司智能电网联合基金资助项目(U1766217)

摘　　要：变压器油在特定条件下会发生硫腐蚀现象,所生成的腐蚀性硫化物会影响绝缘绕组性能,进而引发设备故障。文中研究变压器油中腐蚀性硫化物对绝缘绕组局部放电特性的影响,通过对不同腐蚀情况的绝缘绕组试品进行局部放电测试,得到腐蚀性硫化物沉积量对绕组局部放电特征的影响规律。结果表明腐蚀性硫化物的沉积会降低绝缘绕组的局部放电起始放电电压,使得绝缘绕组容易放电,且放电密度与放电重复率与腐蚀性硫化物沉积量成正比。Sulfur corrosion is widespread in transformer oil. The generation of corrosive sulfide can affect the performance of insulation winding and cause equipment failure. In this paper,the influence of corrosive sulfide in transformer oil on the partial discharge characteristics of insulation winding is studied. Through partial discharge test of insulation winding samples with different corrosion conditions,the influence of the corrosive sulfide deposition on the partial discharge characteristics of winding is obtained. The results show that the deposition of corrosive sulfide reduces the initial discharge voltage of the insulation winding,which makes the insulation winding easy to discharge,and the discharge density and discharge repetition rate are proportional to the deposition of corrosive sulfide.

关 键 词：腐蚀性硫化物 二苄基二硫 绝缘绕组 局部放电 

分 类 号：TM855[电气工程—高电压与绝缘技术]