Travelling wave fault locator experience on Eskom´s transmission network

This paper summarises Eskom´s use and experience of recording travelling waves on its transmission grid. TWS fault locators have been extensively utilised, with excellent success, for fault location of transient earth faults on both compensated and uncompensated AC lines as well as on HVDC lines. They have allowed for fault cause identification via burn mark analysis and waveform signatures. Finally, they appear to offer a means for detecting fire caused earth faults through detection of the pre-fault corona