摘要
本文对比研究了酯类绝缘油及矿物绝缘油在中小间隙下极不均匀场中的正负极性直流击穿电压,并与雷电击穿电压进行对比分析。结果表明:酯类绝缘油的直流击穿电压低于矿物绝缘油,负极性直流击穿电压在小间隙下低于雷电击穿电压,但在中间隙下高于雷电击穿电压。
In this paper,the positive and negative DC breakdown voltage of ester insulating oils and mineral insulating oil in extremely uneven field under small and medium gap were studied,and then compared with their lightning breakdown voltage.The results show that the DC breakdown voltage of ester liquids is lower than that of mineral insulating oil.The negative DC breakdown voltage is lower than the lightning breakdown voltage under small gaps,but it is higher than the lightning breakdown voltage under medium gaps.
作者
李继攀
王智杰
刘宏领
郭瑞
孙素亮
张红敏
王强
LI Jipan;WANG Zhijie;LIU Hongling;GUO Rui;SUN Suliang;ZHANG Hongmin;WANG Qiang(Heze Power Supply Company,State Grid Shandong Electric Power Company,Heze 274000,China)
出处
《绝缘材料》
CAS
北大核心
2022年第7期93-98,共6页
Insulating Materials
基金
国网山东省电力公司科技项目(2020A-96)。
关键词
植物油
天然酯
直流击穿特性
酯类绝缘油
换流变压器
vegetable oil
natural ester
DC breakdown characteristics
ester insulating oil
converter transformer
