SF_(6)气体密度继电器阻尼油劣化缺陷原因分析  

Analysis of damping oil deterioration of SF_(6) gas density relay

作　　者：曾晓亮 张力 安政 田倩倩 耿植 兰新生 刘曦 王志高 张忠伟 李成辉 ZENG Xiaoliang;ZHANG Li;AN Zheng;TIAN Qianqian;GENG Zhi;LAN Xinsheng;LIU Xi;WANG Zhigao;ZHANG Zhongwei;LI Chenghui(State Grid Sichuan Electric Power Research Institute,Chengdu 610041,China;State Grid Bazhong Electric Power Supply Company,Bazhong 636000,China;State Grid Zigong Electric Power Supply Company,Zigong 643000,China;Analytical&Testing Center,Sichuan University,Chengdu 610064,China)

机构地区：[1]国网四川省电力公司电力科学研究院,四川成都610041 [2]国网四川省电力公司巴中供电公司,四川巴中636000 [3]国网四川省电力公司自贡供电公司,四川自贡643000 [4]四川大学分析测试中心,四川成都610064

出　　处：《中国测试》2022年第5期142-145,共4页China Measurement & Test

摘　　要：SF_(6)气体密度继电器广泛应用于电力系统中,是电力系统中重要的保护和控制设备,其可靠性直接关系到SF_(6)绝缘设备的安全运行,因此对其进行定期校验非常重要。该文针对四川电网发现的充油型SF_(6)气体密度继电器触点回路故障进行详细分析,利用解体检测、化学分析等手段进行研究,结果显示故障原因为阻尼油酸值超标,加速了阻尼油劣化,电阻较高的阻尼油劣化产物积聚于触点周围,阻断告警和闭锁信号的正常发出。最后针对SF_(6)气体密度继电器触点回路故障提出了处理建议和改进措施。The SF_(6) gas density relay has been widely used in electrical power systems,which is an important protection and control equipment for SF_(6) insulation equipments.To ensure its reliability,periodically checking is of great significance.In this paper,the contact circuit fault of oil filled SF_(6) gas density relay in Sichuan power grid were analyzed in detail,and the research was carried out by means of disassembly detection and chemical analysis.The results showed that the organic acids in damping oils would corrode metal contact and accelerate the deterioration of damping oil.Moreover,the deterioration products of damping oil could accumulate around the metal contacts and cut off the alarm circuit.Finally,some improvement measures have been provided for eliminating these defects.

关 键 词：六氟化硫 密度继电器 阻尼油 油品劣化 

分 类 号：TM586[电气工程—电器]