首页|基于漏电流的配电网电缆故障感知与老化定位

基于漏电流的配电网电缆故障感知与老化定位

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电缆作为配电系统中能量传输的重要载体,其安全可靠运行是保障配电网运行可靠性的基础.针对目前电缆监测手段的局限性以及故障定位精度不高,提出一种基于共模漏电流信号的配电网电缆的绝缘状态高精度状态感知监测方法.首先采用共模漏电流表征电缆绝缘老化的特征参数,在此基础上研究了基于共模信号注入的监测方法以及电缆局部老化高精度定位,最后结合仿真分析证明了所提出方案和方法的有效性和可行性.
Fault Perception and Aging Location of Distribution Network Cables Based on Leakage Current
As an important carrier for energy transmission in power distribution system,safe and reliable operation of ca-bles is the basis for ensuring power supply reliability of distribution networks.In view of the limitations of current cable monitoring methods and the low accuracy of fault location,a high-precision state perception monitoring method for insula-tion state of distribution network cables based on common-mode leakage current signals is proposed.First the common-mode leakage current is used to characterize the characteristic parameters of cable insulation aging.On this basis,the mo-nitoring method based on common-mode signal injection and the high-precision location of local cable aging are studied.Fi-nally effectiveness and feasibility of the proposed scheme and method are proved by simulative analysis.

leakage currentdistribution networkfault perceptiononline monitoringaging location

张雪楠、张雪寒、曹萌萌、陈楚

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国网江苏省电力有限公司宿迁供电分公司,江苏 宿迁 210000

漏电流 配电网 故障感知 在线监测 老化定位

国家电网江苏省电力公司面向生产一线科技项目(宿迁公司)(2023)

B310C0235Y0A

2024

电工技术
重庆西南信息有限公司(原科技部西南信息中心)

电工技术

影响因子:0.177
ISSN:1002-1388
年,卷(期):2024.(9)
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