Research about the Insulation Performance of Insulators due to Slimes Mitigation Occurrence

Mello, D.R.; Angelini, Joceli Maria Giacomini; Franca, F.R.R.; Duarte, A.R.C.L.; Paiva, Rayane de Lima Moura; Sousa, E.B. de; Lobato, I.

doi:10.1109/ichve.2008.4773885

Cited by 6 publications

(2 citation statements)

References 2 publications

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“…A research program was developed in South Africa on 2000s to compare the performance of different insulator materials subjected to severe marine pollution [5]. Pollution under rainforest environment was assessed in one research carried out in [6] in which studies were conducted to look for solutions to mitigate problems caused by typical contaminants found in Amazon region, such as: slimes, moss, lime, lichen, etc. In order to understand the insulator flashover process, several studies to model insulator flashover were conducted since 1958 when Obenaus developed a model to describe flashover under DC conditions for a pollution layer with uniform resistance.…”

Section: Polluted Environment Menaces Reliable Transmission or Distri...mentioning

confidence: 99%

Assessment of Leakage Current on Polymeric Insulator Using Finite Element Analysis

Leite¹

2022

Preprint

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<p>This paper develops a Finite Element Model (FEM) for a 138 kV High Temperature Vulcanized (HTV) Silicone Rubber (SiR) transmission insulator in which, in a first step, leakage current is calculated for different non-uniform continuous and discontinuous pollution deposits and then features based on the phase shift between the leakage current and the applied voltage are extracted for each kind of pollution layer to identify the existence of dry bands on the insulator surface. A phase shift of 84.75° lag between the leakage current and applied voltage was found for a pollution layer with dry bands inserted. This results evidence that the phase angle can be used to detect the dry band formation by measuring the leakage current and its phase angle.</p>

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Section: Polluted Environment Menaces Reliable Transmission or Distri...mentioning

confidence: 99%

Assessment of Leakage Current on Polymeric Insulator Using Finite Element Analysis

Leite¹

2022

Preprint

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“…A research program was developed in South Africa on 2000s to compare the performance of different insulator materials subjected to severe marine pollution (Vosloo, 2002). Pollution under rainforest environment was assessed in one research carried out in (De Mello et al, 2008) in which studies were conducted to look for solutions to mitigate problems caused by typical contaminants found in Amazon region, such as: slimes, moss, lime, lichen, etc.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Leakage Current on Polluted Polymeric Insulator Using Finite Element Method

Reinaldo Corrêa Leite,

Filipe M. do Rosário Menezes,

Kalil Lucas da Silva Corrêa

2022

Proceedings IX Simpósio Brasileiro De Sistemas Elétricos

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This paper develops a Finite Element Model (FEM) for a 138 kV High Temperature Vulcanized (HTV) Silicone Rubber (SiR) transmission insulator in which, in a first step, leakage current is calculated for different non-uniform continuous and discontinuous pollution deposits and then features based on the phase shift between the leakage current and the applied voltage are extracted for each kind of pollution layer to identify the existence of dry bands on the insulator surface. A phase shift of 84.75° lag between the leakage current and applied voltage was found for a pollution layer with dry bands inserted. This results evidence that the phase angle can be used to detect the dry band formation by measuring the leakage current and its phase angle.Resumo: Este trabalho desenvolve um Modelo de Elementos Finitos (FEM) para um isolador de transmissão de 138 kV Vulcanizado em Alta Temperatura (VTA) de Borracha de Silicone (BS) para o qual, em uma primeira etapa, a corrente de fuga é calculada para diferentes depósitos de poluição contínua e descontínua não uniformes e em seguida, são extraídas características baseadas no deslocamento de fase entre a corrente de fuga e a tensão aplicada para cada tipo de camada de poluição para identificar a existência de bandas secas na superfície do isolador. Um deslocamento de fase de 84,75° de atraso entre a corrente de fuga e a tensão aplicada foi encontrado para uma camada de poluição com bandas secas inseridas. Esses resultados evidenciam que o ângulo de fase pode ser usado para detectar a formação de banda seca através da medição da corrente de fuga e seu ângulo de fase.

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Microbial adhesion and nanocomposite‐loaded antifouling applications of insulating polymers in transmission lines‐a review

Yang,

Zhang,

Zhu

et al. 2024

IET Nanodielectrics

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In regions characterised by high humidity and abundant vegetation, the external insulation materials utilised in high‐voltage transmission and transformation are frequently fouled with a multitude of microorganisms, thereby jeopardising the reliable operation of the power grid. A comprehensive overview of the periodic growth regulation of parasitic algae is presented upon insulating composites across various regions of the world. Additionally, it highlights the methods for quantitative evaluation and accurate prediction of algae coverage degree. Also, the biological contaminates coating process and the artificial flashover test method are summarised, and the effects of algae on the reliability of inorganic and organic materials used for external insulation are compared. It emphasises the dynamic hygroscopic characteristics and cytoelectronegativity of cell secretions as the critical factors that negatively affect the hydrophobicity and flashover performance of silicone rubber insulators by algae. Furthermore, valuable insights into the long‐term inhibition of algae growth on polymeric insulators are provided using eco‐friendly antibiotic‐loaded silica aerogel nanocomposites.

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Research about the Insulation Performance of Insulators due to Slimes Mitigation Occurrence

Cited by 6 publications

References 2 publications

Assessment of Leakage Current on Polymeric Insulator Using Finite Element Analysis

Assessment of Leakage Current on Polymeric Insulator Using Finite Element Analysis

Analysis of Leakage Current on Polluted Polymeric Insulator Using Finite Element Method

Microbial adhesion and nanocomposite‐loaded antifouling applications of insulating polymers in transmission lines‐a review

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