自动换相测量数字兆欧表在电缆绝缘特性测试中的应用  

Application of digital megohm meter for automatic phase change measurement in testing of cable insulation characteristics

作　　者：吴远密 彭俊臻 张德刚 李治波 田海朋 李雅特 姚建中 Wu Yuanmi;Peng Junzhen;Zhang Degang;Li Zhibo;Tian Haipeng;Li Yate;Yao Jianzhong(Yunnan Power Grid Co.,Ltd.,Xishuangbanna Power Supply Bureau,Jinhong 666100,China;Electric Power Research Institute,Yunnan Power Grid Co.,Ltd.,Kunming 650217,China;Training And Evaluation Center,Yunnan Power Grid Co.,Ltd.,Kunming 650032,China;Yunnan Power Grid Co.,Ltd.,Diqing Power Supply Bureau,Xianggelila 674400,China)

机构地区：[1]云南电网有限责任公司西双版纳供电局,景洪666100 [2]云南电网有限责任公司电力科学研究院,昆明650217 [3]云南电网有限责任公司培训与评价中心,昆明650217 [4]云南电网有限责任公司迪庆供电局,香格里拉674400

出　　处：《云南电力技术》2020年第1期109-113,共5页Yunnan Electric Power

摘　　要：为了提高电力设备的绝缘特性检测效率,首次引入电力设备绝缘电阻三相换相测量技术并在电缆绝缘测试中得以应用。本文依次对电缆绝缘特性和自动换相测量数字兆欧表机理进行分析,利用PSCAD软件对电缆绝缘电阻进行仿真计算,并使用研制的自动换相测量数字兆欧表对标准电阻和二次电缆进行试验测试,最终验证了电力设备绝缘电阻的三相换相测量技术的可行性,该技术能有效解决电缆绝缘特性测试耗时、耗力和人工换线、接线错误的问题。In order to improve the detection efficiency of insulation characteristics of power equipment,the three-phase commutation measurement technology of insulation resistance of power equipment was introduced for the first time and applied in cable insulation testing.This article in order to the cable insulation characteristics and automatic phase measuring digital megohmmeter mechanism is analyzed,using PSCAD software simulation calculation was carried out on the insulation resistance of cable,digital megohmmeter and developed by using automatic phase measurement test was carried out on the standard resistance and secondary cable,finally verify the phase commutation of power equipment insulation resistance measuring technique feasibility of this technology will be able to effectively solve the cable insulation characteristics test time-consuming,time-consuming and artificial line change,connection error problem.

关 键 词：数字兆欧表 绝缘特性 换相测量 

分 类 号：TM74[电气工程—电力系统及自动化]