电流谐波环境下电缆故障监测技术研究

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中图分类号：TP274；TM75 文献标志码：A 文章编号：1001-5922（2025）05-0189-04

Abstract：Inorderto solve the problemoffault monitoring intheoperation of power cables，starting fromthe analysisof thecomposition，functional requirements and technical indicators ofthe monitoring system，acable fault monitoring system was built based on the high-frequency pulse current method.The monitoring process and method of partial discharge monitoring system were analyzes andoptimizes，and the cable fault ina current harmonic environment by improving the optimization strategy were detects andanalyzes.The results showed thatthe of-line monitoring partial discharge monitoring system could monitor thecable electrical signalandotherdata in thecurrent harmonic environment inreal time，and accurately judge the cable fault point in the current harmonic environment，and therange was accurate within 2O maround the monitoring point.Combined with the cable setting during cable operation inthe current harmonic environment，the precise location of the cable faultcouldbe further investigated，and the cause of the cable fault and the cable troubleshooting measures could be given in combination with the monitoring system database.

Key words：current harmonics；cable failure；high-frequency pulse current method；ofline monitoring； positioning monitoring

电力电缆故障是一种在输电和配电系统运行过程中，由于系统部件设计和外部环境变化等因素，在局部范围内产生短路、断网等故障的现象。（剩余4859字）