Fault location on EHV lines using wideband spread spectrum techniques

Electrical authorities require fast and accurate fault locators to protect tha quality of supply and reduce outage times. Spread spectrum techniques perform well in high noise environments such as power lines and their use in radar ranging is well known. Existing power line carrier (PLC) equipment may be used to transmit a direct sequence signal down a faulted EHV line. The fault position may then be calculated from correlation analysis of the reflected waveforms. In this thesis the fault location process has been simulated on a digital computer taking into account the frequency variation of the PLC interface and line parameters over the spread spectrum bandwidth. The effect of waveform characteristics, fault location and resistance are examined for a 100 km double transposed line with a single phase to ground fault.

Name dc:type.qualificationname

phd

Level dc:type.qualificationlevel

doctoral

Grantor dc:publisher.institution

Victoria University of Technology

Year dc:date.issued

1999

Author dc:creator

• Taylor, Victor

• 0906 Electrical and Electronic Engineering
• School of Engineering and Science

Language dc:language

en