A new approach in modeling AC flashover voltage for polluted insulator

Sabarina Jaafar, A. S. Ahmad, P. S. Ghosh, S. A.K. Aljunid

Research output: Contribution to journalConference article

4 Citations (Scopus)

Abstract

Contamination-driven insulator failure is a problem that incessantly plagues distribution system. It erodes power quality and diminishes system reliability. Research on insulator pollution is directed primarily to understand the physics of the growth of discharge and to develop a mathematical model, which can predict the critical flashover voltage and current. In this paper a new ac model for flashover voltage has been proposed taking into consideration "Equivalent Salt Deposit Density (ESDD)" in place of "Resistance per unit Length". The salient feature of the proposed model is that it takes into account the selection of an appropriate value of the proposed "Pollution Severity Factor" which varies with the "salt present in the pollution layer" and "width of the pollution channel". The proposed model has been validated against experimental results taken from an experiment carried out on a flat plate model. It has been observed that the modeled results closely follow the experimental curves and can predict rms value of critical flashover voltage with a mean absolute error (MAE) of < 5.00%. The effectiveness of the model was also verified by comparing the modeled results against the experimental and theoretical results of other researchers and good agreement has been obtained.

Original languageEnglish
Pages (from-to)558-561
Number of pages4
JournalConference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report
Publication statusPublished - 01 Jan 2002
Event2002 IEEE Conference on Electrical Insulation and Dielectric Phenomena - Cancun, Mexico
Duration: 20 Oct 200224 Oct 2002

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Flashover
Electric potential
Pollution
Salt deposits
Power quality
Physics
Mathematical models
Salts
Experiments

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Industrial and Manufacturing Engineering
  • Building and Construction

Cite this

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A new approach in modeling AC flashover voltage for polluted insulator. / Jaafar, Sabarina; Ahmad, A. S.; Ghosh, P. S.; Aljunid, S. A.K.

In: Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report, 01.01.2002, p. 558-561.

Research output: Contribution to journalConference article

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