A new approach to calibrate the thermal conditions in space charge measurements on HVDC mini-cables

Giuseppe Rizzo, Eleonora Riva Sanseverino, Guido Ala, Pietro Romano, Vincenzo Li Vigni, Roberto Candela

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The PEA method is currently widespread used for space charge measurements in mini-cables in order to qualify the behavior of semicon-dielectric-semicon compound under electric and thermal stress. The main goal of this research is to quantitatively evaluate the relationship between the thermal boundary conditions applied to cables or mini-cables and the maximum local electric field due to the accumulated space charge. Hitherto, several research groups have obtained thermal gradients over the dielectric's radius heating the conductor by Joule effect due to an induced current. In this paper, a numerical approach is offered to calibrate the heat exchange boundary conditions to apply to a sample during PEA space charge measurements. This method aims to reproduce in mini-cables the same operative electric field levels reached in full size HVDC cables.
Original languageEnglish
Title of host publicationAnnual Report - Conference on Electrical Insulation and Dielectric Phenomena, CEIDP
Pages438-441
Number of pages4
Publication statusPublished - 2019

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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