Performance Comparison and Improvement of STDR/SSTDR Schemes Using Various Sequences

Abstract

This paper investigates the detection performance of fault location using STDR(sequence time domain reflectometry) and SSTDR(spread spectrum time domain reflectometry) with various length and types of sequences, and then, proposes an improved detection technique by eliminating the injected signal in SSTDR. The detection error rates are compared and analyzed in power line channel model with various fault locations, fault types, and spreading sequences such as m-sequence, binary Barker sequence, and 4-phase Frank sequence. It is shown that the proposed technique is able to improve the detection performance obviously when the reflected signal is weak or the fault location is extremely close.

Enhanced Locating Method for Cable Fault Using Wiener Filter

“…There are several locating technologies that can be used to detect the fault location and fault type of power cable. Some of the most publicized methods are time domain reflectometry (TDR), frequency domain reflectometry (FDR), and time-frequency domain reflectometry (TFDR) [1][2][3][4][5][6]. TDR method detects the cable fault using the auto-correlation property of the reference signal in time domain.…”