煤炭工程 ›› 2025, Vol. 57 ›› Issue (2): 119-123.doi: 10. 11799/ ce202502017

• 生产技术 • 上一篇    下一篇

基于频域反射法的煤矿电缆故障定位技术研究

牛小铁,王彬,杨德亮   

  1. 北京工业职业技术学院,北京 100042

  • 收稿日期:2023-07-30 修回日期:2024-06-05 出版日期:2025-02-10 发布日期:2025-04-28
  • 通讯作者: 王彬 E-mail:wangbin@bgy.edu.cn

Fault location technology for coal mine cables based on frequency domain reflection method

  • Received:2023-07-30 Revised:2024-06-05 Online:2025-02-10 Published:2025-04-28

摘要:

针对煤矿井下电缆老化、破损等故障难以定位的问题开展了基于频域反射法的电缆故障定位技术研究。该方法为对电缆注入一个频域信号并获取反射信号的数据对获取的数据进行加窗处理放大微弱异常信号提高定位精度。可根据反射信号的波形变化区分出电缆的故障类型并可根据电缆中信号的传输速度以及入射信号与反射信号的时间差实现故障点定位。研究结果表明该定位技术对各类电缆缺陷均能够进行快速高精度的定位该技术能够放大缺陷点的畸变对微小缺陷更加敏感识别能力更强定位误差更小该技术对同轴电缆、带金属屏蔽层电缆和带金属铠装电缆等具有明确反射信号通道类型的电缆缺陷定位信号响应更加灵敏。

关键词:

频域反射 , 缺陷定位 , 无损定位 , 电缆故障 , 故障分类

Abstract:

Aiming at the problems that it is difficult to locate the faults such as cable aging and damage in coal mine, the cable fault location technology based on frequency domain reflection method is studied. Inject a frequency domain signal into the cable and obtain the waveform of the reflected signal, windowing the signal, distinguish the fault type of the cable according to the waveform change of the reflected signal, and locate the fault point according to the transmission speed of the signal in the cable. The non-destructive location and on-line monitoring of cable fault in coal mine are realized.

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