Precise Localization of High-Voltage Breakdown Events using φ-Optical Time-Domain Reflectometry on an Optical Ground Wire
Abstract
We present φ-OTDR for detecting and localising full spark-gap breakdowns by analysing backscattered light phase and frequency-domain signatures during high-voltage discharges synchronised with oscilloscope-recorded events. Measuring sub-kHz confirms clear discharge signatures and acoustic reconstruction over long links with ≈ 10 m spatial resolution.
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