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7 results on '"Bouazabia, S."'

4. Flashover of Discontinuous Pollution Layer on HV Insulators

Author

Mekhaldi, A., Namane, D., and Bouazabia, S.

Subjects
Dielectrics -- Research, Electrical engineering -- Research, Electric insulators -- Research, Business, Electronics, Electronics and electrical industries
Abstract

This paper deals with discontinuous pollution layers deposited on the insulator surface. Two zones are known to form: a clean (dry) zone and a polluted (wetted) zone. The influence of the length and position of the dry zone on the leakage current and the arc length are investigated. These were made on a plane experimental model under ac voltage. Two configurations were studied: pollution deposited near the HV electrode, and pollution deposited near the ground electrode. This study was made using pollution layers with different conductivities. Based on the experimental results, a theoretical model allowing us to calculate the gap impedance, the transferred (gap) voltage and the leakage current was established. This model enables to predict the pollution severity based on the sample's equivalent impedance.

Published
1999

6. A study of the behavior of water droplets under the influence of non-uniform electric field in silicon rubber

Author

Benharat, Samira, Bouazabia, S., Haddad, Abderrahmane, Benharat, Samira, Bouazabia, S., and Haddad, Abderrahmane

Abstract

Water droplets on the surface of silicon rubber were investigated under the influence of non-uniform electric fields. Several parameters of water droplets were investigated, such as the positioning of the droplets regarding the electrodes. The most striking conclusion is that the flashover voltage and electric field distribution depends on the positioning of the droplets from the electrodes.

7. Polluted insulator optimization using neural network combined with genetic algorithms

Author

Doufene, D., Bouazabia, S., Ladjici, A. A., Haddad, Abderrahmane, Doufene, D., Bouazabia, S., Ladjici, A. A., and Haddad, Abderrahmane

Abstract

A number of investigations were undertaken to enhance the behavior of high voltage outdoor insulators by adopting numerical methods of optimization, but no work is performed to account for the presence of pollution. In this paper, a shape optimization of a high voltage insulator is achieved with the objective of reducing the tangential electric field along its polluted surface by means of numerical methods, namely neural networks and genetic algorithms.

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