### Abstract

A dynamic model which explains the contamination flashover of insulators is developed. It takes into account the instantaneous changes in the parameters of arc propagation. This model is based on the concepts summarized in the review paper by F. A. M. Rizk (1981) and the dynamic features reported in a paper by S. Anjana and C. S. Lakshminarasimha (1989), where Mayr's equation is used to calculate the instantaneous change in the arc parameters. The arc propagates when the net input energy to the arc is sufficient to sustain it. The arc gradient E
_{arc} is calculated either from analog models, such as the electrolytic tank, or from the relationship E
_{arc} = I
_{arc} × R
_{arc}. The flashover voltage is computed for a post and suspension insulator with uniform pollution layer (worst-case condition). The influence of arc parameters such as arc density, initial arc length, and arc resistance is discussed.

Original language | English (US) |
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Title of host publication | Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report |

Publisher | Publ by IEEE |

Pages | 557-562 |

Number of pages | 6 |

State | Published - Oct 1990 |

Event | 1990 Conference on Electrical Insulation and Dielectric Phenomena - Pocono Manor, PA, USA Duration: Oct 28 1990 → Oct 31 1990 |

### Other

Other | 1990 Conference on Electrical Insulation and Dielectric Phenomena |
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City | Pocono Manor, PA, USA |

Period | 10/28/90 → 10/31/90 |

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### ASJC Scopus subject areas

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

### Cite this

*Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Annual Report*(pp. 557-562). Publ by IEEE.