Abstract
This paper is dedicated to synchrophasor-based fault location (FL) on extra-high voltage overhead transmission lines. Instead of simulating electromagnetic transients caused by a fault in software, two real cases are considered with transient waveforms captured by digital fault recorders during single line-to-ground faults on 500 kV lines. These waveforms were played back on a real-time digital simulator with a phasor measurement unit (PMU) function. A number of single-end and double-end FL expressions were then used with the obtained synchrophasors, and the FL errors were compared to those reported by FL units, digital relays and specialized software. The derived results have confirmed that PMU-based FL is a promising application, which agrees with PMU-based FL results obtained earlier with purely simulated data. The results can therefore serve as yet another indication of the possibility to apply synchrophasor data to FL and digital relaying in general.
Published Version
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