Dynamic modeling of flashover of polymer insulators under polluted conditions based on HGA-PSO algorithm

N Fahimi, HR Sezavar, AAS Akmal - Electric Power Systems Research, 2022 - Elsevier
This paper investigates the pre-flashover conditions of polymer insulators under polluted
condition. This investigation is done by combination of analytical mathematical formulations …

Thermal aging characteristics of silicone rubber exposed to mineral oil

M Paul, P Mishra, DN Vangapandu… - … on Dielectrics and …, 2023 - ieeexplore.ieee.org
Room temperature vulcanized (RTV) silicone rubber is extensively utilized as a coating
material for power transformer bushings because of its high hydrophobicity and excellent …

[HTML][HTML] Experimental study and modeling of the effect of ESDD/NSDD on AC flashover of SiR outdoor insulators

MEA Slama, A Krzma, M Albano, AM Haddad - Energies, 2022 - mdpi.com
Pollution flashover occurs when soluble and nonsoluble materials cover the surface of an
insulator, and this may ultimately cause a reduction in its performance. In this paper, the …

A dynamic intelligent approach based on Gaussian function for prediction of the flashover voltage conditions on polluted polymer insulators

HR Sezavar, N Fahimi… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This research presents a dynamic modeling approach to predict flashover voltage (FOV) of
polymer insulators. Pre-flashover conditions can be used to represent analytical …

An improved dynamic multi-arcs modeling approach for pollution flashover of silicone rubber insulator

HR Sezavar, N Fahimi… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
This article presents a dynamic modeling approach to analyze pollution flashover of silicone
rubber insulators. Pre-flashover conditions can be used to represent analytical formulations …

Flashover prediction of polymer insulators based on dynamic modeling of pollution layer resistance using ANN

N Fahimi, HR Sezavar… - IEEE Transactions on …, 2022 - ieeexplore.ieee.org
In this article, a novel dynamic approach is proposed to analyze pollution layer resistance of
polymer insulators. One of the main challenges in dynamic modeling of pollution layer …

Risk assessment of contaminated composite insulators in pre-flashover conditions

HR Sezavar, N Fahimi, S Hasanzadeh… - Electric Power Systems …, 2024 - Elsevier
In this paper, a novel approach for risk assessment of the outdoor polluted insulators is
presented to predict dry band-arcing and flashover. Risk evaluation of the dry-band arcing …

[HTML][HTML] Development of a Simple Experimental Setup for the Study of the Formation of Dry Bands on Composite Insulators

MA Andoh, K Gbah, C Volat - Energies, 2022 - mdpi.com
This paper introduces a new geometry for the study of dry band formation. Firstly, a
thermoelectric simulation of a 69 kV uniformly polluted composite insulator was performed …

Features characterizing the surface state of HV insulator glass model under desert pollution

D Maadjoudj, O Kherif, A Mekhaldi… - IEEE Transactions on …, 2021 - ieeexplore.ieee.org
This paper deals with the monitoring of the surface state of HV insulator model under
discontinuous layer of pollution. Natural desert sand is used to simulate the pollution …

[HTML][HTML] Study on surface conductivity distribution of pollution layer during the propagation of local arc on the wet polluted insulation surface

H Yang, W Cao, R Wen, Y Wang, W Shen, L Zhang - AIP Advances, 2022 - pubs.aip.org
The surface conductivity of the pollution layer plays a pivotal role in the investigation of
flashover voltage and the propagating mechanism of the local arc. In order to study the …