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Research on the Interrelation between Temperature Distribution and Dry Band on Wet Contaminated Insulators

Author

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  • Da Zhang

    (College of Automation & Electronic Engineering, Qingdao University of Science and Technology, Qingdao 260061, China)

  • Fancui Meng

    (College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 260061, China)

Abstract

In this paper, the interrelation between temperature distribution and dry band on wet contaminated insulators is studied by theoretical analysis, numerical simulation, and a high-voltage artificial contamination experiment. The influences of the composition of the contaminant and the relative humidity of the environment on the moisture absorption of the contamination layer are studied. It is indicated that the critical relative humidity (CRH) of the soluble mixture in the contamination layer decreases with the increase of the variety of soluble substances. This can be considered as a previously neglected reason for the inconsistency between the result of an artificial contamination test and that of a natural contamination test. Furthermore, the influences of the maximum temperature, wind speed, altitude, relative humidity, and the composition of the contamination on the water evaporation rate of the contaminated layer are also studied. The formation of dry band is predicted by studying the law of water transport in the contamination layer. The influence of the location, width, drying degree, and quantity of dry bands on the insulator surface temperature are studied by numerical simulation. An infrared thermal imager and ultraviolet camera are adopted to measure the temperature distribution and the discharge phenomenon on the insulator surface separately, which verifies the above numerical simulation. The study results deepen the research on the moisture absorption characteristics, the law of temperature distribution, the formation of dry bands, and the influence of dry bands on the temperature distribution of wet contaminated insulators.

Suggested Citation

  • 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.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:22:p:4289-:d:285687
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    References listed on IDEAS

    as
    1. Zhijin Zhang & Shenghuan Yang & Xingliang Jiang & Xinhan Qiao & Yingzhu Xiang & Dongdong Zhang, 2019. "DC Flashover Dynamic Model of Post Insulator under Non-Uniform Pollution between Windward and Leeward Sides," Energies, MDPI, vol. 12(12), pages 1-17, June.
    2. Yukun Lv & Weiping Zhao & Jingang Li & Yazhao Zhang, 2017. "Simulation of Contamination Deposition on Typical Shed Porcelain Insulators," Energies, MDPI, vol. 10(7), pages 1-13, July.
    3. Maurizio Albano & A. Manu Haddad & Nathan Bungay, 2019. "Is the Dry-Band Characteristic a Function of Pollution and Insulator Design?," Energies, MDPI, vol. 12(19), pages 1-15, September.
    4. Xinhan Qiao & Zhijin Zhang & Xingliang Jiang & Tian Liang, 2019. "Influence of DC Electric Fields on Pollution of HVDC Composite Insulator Short Samples with Different Environmental Parameters," Energies, MDPI, vol. 12(12), pages 1-12, June.
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    Cited by:

    1. Da Zhang & Shuailin Chen, 2020. "Intelligent Recognition of Insulator Contamination Grade Based on the Deep Learning of Ultraviolet Discharge Image Information," Energies, MDPI, vol. 13(19), pages 1-16, October.
    2. Jinpeng Hao & Jinzhu Huang & Ziyi Fang & Xiao He & Qiang Wu & Xiaolong Gu & Yu Wang & Hong Wu, 2023. "Suppression Measures of Partial Discharge at Rod–Plate Connection in Composite Tower," Energies, MDPI, vol. 16(9), pages 1-17, April.

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