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Conferences > OFS > 2023 > W4 > W4.41

Distributed Detection of Cable Joint Insulation Defects using Dual-Frequency Heterodyne Coherent φ-OTDR

Weiqi Qin, Sihan Wang, Yukun Wang, Wei Wang, Yuan Wang, and Guoming Ma

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Abstract

A φ-OTDR system adopting dual-frequency heterodyne coherent detection scheme was presented to sense partial discharge acoustic emission signals in power cable joints. Partial discharges with a magnitude of 127 pC was detected within 20 km.

© 2023 The Author(s)

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