基于北斗系统及声信号的电力电缆故障定位方法

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中图分类号：TM7；TN967.1 文献标志码：B 文章编码：1672-7274（2025）05-0100-04

Abstract： In order to solve the problem of accurate positioning of underground power cable faults in cities， this paper proposes a cable fault positioning method based on the Beidou system and acoustic signals.This method relies onthe Beidou system to obtain location informationanduses the Complementary Ensemble Empirical Mode Decomposition （CEEMD） method to separate multipath propagation signals，efectively eliminating signal aliasing. On this basis，the intrinsic mode function of the acoustic signal is used for angle estimation，RSSI estimation， and time delay estimation，further improving the measurement accuracy. At the same time，combining regression analysis methods and multi measurement point joint estimation methods，the location estimation of the fault point is transformed into anonlinear least squares problem and solved using the Levenberg Marquardt algorithm.The experimental results show that this method can efectively separate cable propagation sound signals from soil propagation sound signals，and has higher fault localization accuracy compared to other mainstream methods.

Keywords： cable faultlocation;soundtechnology，complementaryensembleempiricalmodedecomposition; regresionanalysis

随着城市化进程进入新的阶段以及电力需求的持续增长，我国广泛采用了埋地电缆作为城市电力传输的主要方式[1-2]。（剩余3636字）