Numerical simulations of a new desing of pin insulators

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Paper number

1921

Working Group Number

Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

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.

Table of content

Keywords

Publisher

AIM

Date

2019-06-03

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