Study of Corona Configurations under DC Conditions and Recommendations for an Identification Test Plan

Saliha Abdul Madhar, Petr Mraz, Armando Rodrigo Mor, Robert Ross

Research output: Contribution to journalArticleScientificpeer-review

12 Citations (Scopus)
249 Downloads (Pure)

Abstract

Corona is one of the most common forms of partial discharge (PD) occurring in high voltage (HV) energy systems. The corona mechanism in air is not exclusive to the field of energy applications but has also been widely studied by physicists to theorize mechanisms of charge transfer during the different phases of gas discharge. The phases of the discharge and its corresponding behavior with alternating voltage (AC) are well established and represented through various discharge trends, patterns and stages. This not only makes the identification of the PD defect possible but also helps evaluate the risk. This paper investigates corona configurations under DC stress in an attempt to create a similar outline of the defect as exists under AC. The defect is studied in terms of the pulse sequence information. The measurement system requirements are kept within a realistic realm to preserve applicability to industrial measurements. Finally, it makes selective recommendations for the effective identification of the discharge condition under DC stress.
Original languageEnglish
Article number105820
Pages (from-to)1-10
Number of pages10
JournalInternational Journal of Electrical Power & Energy Systems
Volume118
DOIs
Publication statusPublished - 1 Jun 2020

Keywords

  • Corona
  • Partial Discharge (PD)
  • HVDC
  • Pattern recognition
  • Pulse Sequence Analysis (PSA)

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