摘要
为降低外界干扰在带电检测与在线监测中对电气设备内部发生的长间歇性、潜伏性局部放电的误判,避免因绝缘击穿而导致的设备故障停电。文中对长间歇性局部放电的放电特性进行研究,在现有带电检测与在线监测基础上,设计了一套便携式长间歇性局部放电监测系统。该系统不仅可以完成设备内部不同频带局部放电信号的采集与放电缺陷的初步定位,而且在云端可以完成局部放电缺陷发展状态的动态跟踪。试验及现场应用结果证明所设计长间歇性局部放电监测系统可以完成电气设备内部局部放电缺陷的长期跟踪,并通过实时的数据更新、在线数据分析,可以为异常设备绝缘状态进行评估。
In order to reduce misinterpretations of long intermittent and latent partial discharges that occur inside electrical equipment during live detection and online monitoring,and avoid equipment failure and power failure due to insulation breakdown,this paper firstly studies the discharge characteristics of long intermittent partial discharges,and then,designs a portable long intermittent partial discharge monitoring system based on existing live detection and online monitoring.This system can not only complete the collection of partial discharge signals in different frequency bands inside the device and the initial positioning of discharge defects,but also can dynamically track the development status of partial discharge defects in the cloud platform.The test and field application results prove that the designed long-interval sparse partial discharge monitoring system can complete the long-term tracking of partial discharge defects in electrical equipment,and evaluate the abnormal equipment insulation status through real-time data update and online data analysis.
作者
牛勃
魏莹
马飞越
伍弘
李辛
王晓康
Niu Bo;Wei Ying;Ma Feiyue;Wu Hong;Li Xin;Wang Xiaokang(Electric Power Research Institute of State Grid Ningxia Electric Power Co.,Ltd.,Yinchuan 750011,China;Shizuishan Power Supply Company,State Grid Ningxia Electric Power Co.,Ltd.,Shizuishan 753000,Ningxia,China;Wuzhong Power Supply Company,State Grid Ningxia Electric Power Co.,Ltd.,Wuzhong 751100,Ningxia,China)
出处
《电测与仪表》
北大核心
2021年第7期173-179,共7页
Electrical Measurement & Instrumentation
关键词
带电检测
重症监护
电气设备
云平台
长间歇性
live detection
intensive care
electrical equipment
cloud platform
long-interval sparse
