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A Simple Thermoelectrical Surface Approach for Numerically Studying Dry Band Formation on Polluted Insulators

Author

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  • Marc-Alain Andoh

    (UQAC/CENGIVRE International Research Center on Atmospheric Icing and Electrical Network Engineering, University of Quebec at Chicoutimi, 555 Boulevard de l’Université, Chicoutimi, QC G7H 2B1, Canada)

  • Christophe Volat

    (UQAC/CENGIVRE International Research Center on Atmospheric Icing and Electrical Network Engineering, University of Quebec at Chicoutimi, 555 Boulevard de l’Université, Chicoutimi, QC G7H 2B1, Canada)

  • Gbah Koné

    (UQAC/CENGIVRE International Research Center on Atmospheric Icing and Electrical Network Engineering, University of Quebec at Chicoutimi, 555 Boulevard de l’Université, Chicoutimi, QC G7H 2B1, Canada)

Abstract

This paper presents a simple thermoelectrical temporal surface method for numerically studying the appearance of a dry band on a polluted insulator. The proposed method combines an empirical expression of the pollution layer surface conductivity, expressed as a function of the temperature and equivalent salt deposit density (ESDD), and a surface approach for modeling the pollution layer, using thermoelectrical temporal simulations based on the finite element method (FEM). Using different material substrates, pollution layer thicknesses, and ESDD levels, the reliability and limitations of the simple thermoelectrical numerical model have been studied. The numerical results obtained demonstrated that the proposed thermoelectrical model can dynamically simulate the dry band appearance in accordance with the experimental results in terms of the temporal evolution of the temperature and the pollution layer resistance, as well as the evolution of the voltage drop and E-field along the dry band formation zone. The results also demonstrate the influence of the material substrate and the pollution layer thickness, which directly influence the thermal aspect of the dry band formation. The simple thermoelectrical numerical surface model was used to study the dry band appearance on a uniformly polluted 69 kV insulator. The results obtained enabled a dynamic simulation of the appearance of the first dry band, which appeared in the middle of the insulator, and to deeply investigate the evolution of the surface temperature, electric potential, and E-field distributions along the insulator. The proposed simple thermoelectrical model combined with the empirical model is able to simulate the influence of a non-uniform pollution layer. Hence, the proposed model provides a simple numerical tool for studying the evolution of the potential and E-field distributions along uniformly and non-uniformly polluted insulation equipment to identify the probability of a region of high dry band appearance relative to the insulator material and geometry. This can aid in the development of new types of mitigation methods to improve the performance of all types of insulators under polluted conditions.

Suggested Citation

  • Marc-Alain Andoh & Christophe Volat & Gbah Koné, 2025. "A Simple Thermoelectrical Surface Approach for Numerically Studying Dry Band Formation on Polluted Insulators," Energies, MDPI, vol. 18(10), pages 1-27, May.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:10:p:2412-:d:1651463
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    References listed on IDEAS

    as
    1. Luo, Ding & Yang, Shuo & Zhang, Haokang & Cao, Jin & Yan, Yuying & Chen, Hao, 2025. "Performance improvement of an automotive thermoelectric generator by introducing a novel split fin structure," Applied Energy, Elsevier, vol. 382(C).
    2. Jiahong He & Kang He & Bingtuan Gao, 2019. "Modeling of Dry Band Formation and Arcing Processes on the Polluted Composite Insulator Surface," Energies, MDPI, vol. 12(20), pages 1-20, October.
    3. Marc-Alain Andoh & Kone Gbah & Christophe Volat, 2022. "Development of a Simple Experimental Setup for the Study of the Formation of Dry Bands on Composite Insulators," Energies, MDPI, vol. 15(14), pages 1-17, July.
    4. Da Zhang & Fancui Meng, 2019. "Research on the Interrelation between Temperature Distribution and Dry Band on Wet Contaminated Insulators," Energies, MDPI, vol. 12(22), pages 1-14, November.
    5. Arshad & Muhammad Ali Mughal & Azam Nekahi & Mansoor Khan & Farhana Umer, 2018. "Influence of Single and Multiple Dry Bands on Critical Flashover Voltage of Silicone Rubber Outdoor Insulators: Simulation and Experimental Study," Energies, MDPI, vol. 11(6), pages 1-17, May.
    6. Mohammed El Amine Slama & Maurizio Albano & Abderrahmane Manu Haddad & Ronald T. Waters & Oliver Cwikowski & Ibrahim Iddrissu & Jon Knapper & Oliver Scopes, 2021. "Monitoring of Dry Bands and Discharge Activities at the Surface of Textured Insulators with AC Clean Fog Test Conditions," Energies, MDPI, vol. 14(10), pages 1-17, May.
    7. Luo, Ding & Wu, Zihao & Zhang, Ziye & Chen, Hao & Geng, Limin & Ji, Zhenhua & Zhang, Wenbo & Zhang, Peng, 2025. "Transient thermal analysis of a thermoelectric-based battery thermal management system at high temperatures," Energy, Elsevier, vol. 318(C).
    8. Marc-Alain Andoh & Christophe Volat, 2024. "Experimental Investigation of Parameters Influencing the Formation of Dry Bands and Related Electric Field," Energies, MDPI, vol. 17(10), pages 1-23, May.
    Full references (including those not matched with items on IDEAS)

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