This paper proposes a monitoring principle based on leakage current measurements to monitor the state and health of HVDC cable dielectric. First, the leakage current measured during different phases of electrothermal stresses applied to a reduced scale cable are compared. Then, a novel magneto-optical current sensor tailored to monitor leakage current of HVDC cables is presented along with its preliminary validation results.
Anaïs Leproux, Ludovic Boyer, Martin Henriksen
Presented at Jicable’23