不同湿度和观测距离下酥朽复合绝缘子的温升特性研究  

Temperature Rise Characteristics of Decay-like Composite Insulator Under Different Ambient Humidity and Observation Distance

作　　者：侯思祖[1] 钟正[2] 张思敏 刘云鹏[2] 耿江海[2] HOU Sizu;ZHONG Zheng;ZHANG Simin;LIU Yunpeng;GENG Jianghai(Hebei Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding 071003,China;Hebei Key Laboratory of Power Transmission Equipment Security Defense,North China Electric Power University,Baoding 071003,China)

机构地区：[1]华北电力大学河北省电力网联网技术重点实验室,河北保定071003 [2]华北电力大学河北省输变电设备安全防御重点实验室,河北保定071003

出　　处：《绝缘材料》2022年第5期102-107,共6页Insulating Materials

基　　金：国家重点研发计划项目(2018YFF01011900)。

摘　　要：针对500 kV酥朽劣化复合绝缘子在干燥、55%、75%、95%环境湿度以及3、5、7 m观测距离下开展红外温升试验,研究不同湿度和观测距离下酥朽复合绝缘子的温升特性。结果表明:酥朽复合绝缘子的温升随环境湿度的增大整体上呈增大趋势,相较于在干燥环境下,在湿度为95%环境下其温升提高了22%~40%,且在湿度一定的情况下,温升随观测距离的增大而减小。通过酥朽复合绝缘子轴线上的温升分布曲线特征可以判断芯棒酥朽劣化段长度,实现酥朽绝缘子酥朽段长度的无损检测。A 500 kV decay-like composite insulator was conducted infrared temperature rise tests under dry conditions,55%,75%,95%of ambient humidity and 3,5,7 m of observation distances to study the temperature rise characteristics of the decay-like composite insulator under different humidity and observation distance.The results show that the temperature rise of the decay-like composite insulator increases with the increase of ambient humidity,its temperature rise in 95%of humidity environment increase by 22%−40% compared with that under dry environment.When the humidity is constant,the temperature rise decreases with the increase of observation distance.The deteriorating section length of the core rod can be judged by the temperature rise distribution curve characteristics on the axis of decay-like composite insulator,which can realize the non-destructive detection of the deteriorating section length of decay-like insulator.

关 键 词：酥朽 复合绝缘子 温升 环境湿度 观测距离 

分 类 号：TM216[一般工业技术—材料科学与工程]