电力电缆诊断检测技术综述

电力电缆是电能传输的重要载体之一,其运行可靠性直接影响电力系统的供电安全。电力电缆诊断检测技术既包含对已发生故障的诊断、定位,也涵盖对电力电缆运行状态的监测,及时发现电缆老化等缺陷或故障隐患,对提高电缆运行的可靠性具有重要意义。文章简介电力电缆老化等缺陷及发生故障的机理,梳理常见电力电缆诊断检测技术并比较它们的优劣,在此基础上结合智能电网发展趋势,探讨电力电缆诊断检测技术的发展趋势和面临的挑战。

A review on diagnostic testing of electrical power cables

The electrical power cable is one of the basic energy carriers for electrical transmission in power grids , whose operation reliability has noticeable impacts on the safety of a power grid .The diagnostic testing contains the diagnostic and locating of the existing fault of electrical power cables , as well as monitoring the electrical cable state to find the existing and potential faults during their operation , which are both very important for improving the operation reliability of the power grids .In this paper , we summarize basic mechanisms of the edging and fault of the electrical power cable and review all kinds of known techniques for electrical power cable diagnostic testing .Based on the pres-ented discussion and recent developments of the smart grids , the development trend and the future challenges of the electrical power cable diagnostic testing are predicted .