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A mathematical model for investigation of dry band location on 22 kV bushing with and without RTV coating: Experimental study. | LitMetric

AI Article Synopsis

  • - The research investigates how pollution on high voltage bushings leads to the formation of dry bands, which can cause flashovers and weaken insulation, while proposing a dynamic arc model to analyze this phenomenon.
  • - The study focuses on predicting flashover voltage and analyzing various dry band positions in contaminated bushings, considering materials like sea salt, road salt, and industrial pollutants.
  • - Experimental data comparing actual flashover voltages with model predictions showed strong agreement, validating the model's accuracy for assessing risks in polluted bushing conditions.

Article Abstract

As different pollutants are deposited on the high voltage bushings, a dry band forms, which causes a flashover. The bushing's contaminated layer will weaken its insulation and have an impact on its electrical characteristics. The performance of bushings in dry band conditions of various lengths was investigated in this proposed piece of work, and a dynamic arc model is presented for the arc process in polluted bushings. It shows satisfactory performance in modelling the arc variables for various dry band positions. The developed dynamic open model for contaminated bushings with and without RTV coating predicted the flashover voltage and dry band positions. Any type of contamination, such as sea salt, road salt, and industrial pollutants prevalent in several sites, can be studied using the established model. Ultimately, it was discovered that there was good agreement between the model's results and the outcomes of the experiments. •Mathematical modeling of 22 kV bushing is conceded out for diverse polluted dry band location at lead-in, lead-out and middle region of bushing surface.•Dynamic arc modeling involved in bushing flashover process for different dry band location is done and flashover voltage is predicted•Experimental work is carried out to find FOV for the bushing with different dry location and compared with predicted FOV.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10864631PMC
http://dx.doi.org/10.1016/j.mex.2024.102579DOI Listing

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