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    Numerical simulations of a new desing of pin insulators

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    CIRED 2019 - 1921.pdf (768.5Kb)
    Paper number
    1921
    Conference name
    CIRED 2019
    Conference date
    3-6 June 2019
    Conference location
    Madrid, Spain
    Peer-reviewed
    Yes
    Metadata
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    Authors
    Dadam, Alessandro , Celesc Distribuição S.A., Brazil
    Salum, Aline , Lactec, Brazil
    Santos, Signie , Lactec, Brazil
    Silva, Guilherme, Lactec, Brazil
    Filho, Vitoldo, Lactec, Brazil
    Kowalski, Edemir, Lactec, Brazil
    Quadros, Rodrigo , Lactec, Brazil
    Richart, Fábio, Lactec, Brazil
    Abstract
    Although pin insulators are designed to have a long operating life, many factors can reduce their life and consequently the quality of power supply, reliability and availability. Among the main factors, one of that causes the most failures in distribution lines is the accumulation of pollutants that lead to the phenomenon of superficial electrical tracking. In order to study the pollution accumulation, simulations were carried out on the air flow around the pin insulator of distribution lines, in order to verify, from the point of view of the characteristics of the flow, which model presents, comparatively, a better performance. The numerical simulations were made in ANSYS® FLUENT® 18.1 software, by finite-volume method and k-omega turbulence model SST (shear stress transport). Among the methodologies of analysis: streamlines, pressure field and velocity field; the pin insulator model, which in all methods showed superior performance, was the pin insulator of 4 ribs, comparatively with the conventional model and the one with 3 ribs.
    Publisher
    AIM
    Date
    2019-06-03
    Published in
    • CIRED 2019 Conference
    Permanent link to this record
    https://cired-repository.org/handle/20.500.12455/649
    http://dx.doi.org/10.34890/871
    ISSN
    2032-9644
    ISBN
    978-2-9602415-0-1

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