Development and Set-up of a Non-intrusive Technique for measuring Space Charges in Specimens of dc cables
Development and Set-up of a Non-intrusive Technique
for measuring Space Charges in Specimens of dc cables
This paper presents a procedure for designing a power converter to produce power pulses in the conductive parts of a cable (core or shield) for non-invasive space charge measurements with a thermal wave. Analytical and numerical thermal and electrostatic studies related to the temperature diffusion in the cable insulation are first presented, then the set-up and the design of the converter architecture are detailed. xperimental results show the ability for charge measurements within the insulation of a power cable in an entirely non-intrusive manner.