摘要
随着电力电缆在电网中的大规模应用,电缆的绝缘状态成为电网安全可靠运行的关键因素。因此,对电缆的绝缘状态进行在线监测尤为重要。电力电缆由于制作、安装及超长年限服役等原因,易出现绝缘故障及异常发热等现象。根据不同的故障原因、故障特征、故障检测方法,总结了电缆绝缘状态监测方法的研究现状,指出各类方法的优势与不足,提出进一步整合电缆绝缘监测方法,建立一套完善的电力电缆绝缘状态在线监测系统,并通过仿真、工程实际获取大数据等途径建立数据库,形成电缆绝缘故障判断模型与标准,用于现场对电力电缆绝缘状态开展在线监测,实现故障的精确诊断与定位。
With the large-scale application of power cables in power grid,the insulation state of cables has become the key factor for the safe and reliable operation of power grid.Therefore,on-line monitoring of cable insulation status is particularly important.Due to the production,installation and long service life of power cables,insulation faults and abnormal heating are easy to occur.According to different fault causes,fault characteristics and fault detection methods,the research status of cable insulation status monitoring methods was summarized,the advantages and disadvantages of various methods were pointed out.It was proposed to further integrate the cable insulation monitoring method,establish a perfect on-line monitoring system for power cable insulation status,establish a database through simulation and engineering practice to obtain big data,and form a cable insulation fault judgment model and standard,which can be used for on-line monitoring of power cable insulation status on site to realize accurate fault diagnosis and location.
作者
王治
Wang Zhi(Guangzhou Bureau of CSG EHV Power Transmission Company,Guangzhou 510663,China)
出处
《机电工程技术》
2021年第11期215-219,共5页
Mechanical & Electrical Engineering Technology
关键词
电力电缆
绝缘状态
在线监测
power cables
insulation state
online monitoring
作者简介
王治(1993-),男,硕士,助理工程师,研究领域为高电压变电运行,已发表论文2篇。
