Enhanced Locating Method for Cable Fault Using Wiener Filter

Abstract

Time domain reflectometry (TDR) has been widely used for detecting the fault location and fault type of power cable due to the low computational load and good adaptability. However, it is vulnerable in the cable characteristic, such as delay and attenuation fluctuating with frequency. In this paper, we execute the channel estimation using Wiener filter to compute the most similar estimated signal with the injected reference signal, and provide experimental results to show the performance improvement of fault detection and location using TDR with Wiener filter in power cable.

Improvement of detection performance in STDR/SSTDR using sign detector

“…On the other hand, FDR or TFDR has to consider the frequency‐domain analysis additionally, and consequently has a higher computational complexity than TDR. These days TDR has adopted various kinds of reference signals such as rectangular pulses, the Gaussian‐enveloped linear chirp, spreading sequences [sequence TDR (STDR)] and modulated spreading sequences with a sinusoidal wave [spread spectrum TDR (SSTDR)] in order to overcome the weakness in the band‐limited channel or the live wire [1–3].…”