Case Study: Traveling-Wave Fault Locating for an HVdc Transmission Line

This paper presents how a traveling-wave fault- locating device originally designed for ac systems can be applied in an HVdc transmission line to provide accurate fault location. The proposed scheme uses high-resolution, time-synchronized transient records to calculate the fault location. Additionally, a system for automatic fault location calculation is proposed. The paper presents validation testing performed on the instrument transformer used to measure the traveling-wave signal from the HVdc system and the fault location results for staged and real faults.

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Author: Diogo Totti, Paulo Lima, Ricardo Abboud, Samuel Lacerda, Venkat Mynam

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