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Technical gazette, Vol. 25 No. Supplement 1, 2018.

Original scientific paper

https://doi.org/10.17559/TV-20161110234146

Modelling the Leakage Current Behaviour of Polluted Ceramic Insulators by Using Acoustic Emissions and Relative Humidity

Benjamín Álvarez-Nasrallah ; Department of Electrical and Electronics Engineering, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla, Colombia
John Edwin Candelo Becerra orcid id orcid.org/0000-0002-9784-9494 ; Department of Electrical Energy and Automation, Universidad Nacional de Colombia, Cra. 80 No 65–223, Facultad de Minas, Medellín, Colombia
José Daniel Soto Ortiz orcid id orcid.org/0000-0002-1143-7844 ; Department of Electrical and Electronics Engineering, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla, Colombia
Alvin Henao orcid id orcid.org/0000-0003-2053-4862 ; Department of Electrical and Electronics Engineering, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla, Colombia
Rafael Castillo Sierra orcid id orcid.org/0000-0002-2648-4096 ; Department of Electrical and Electronics Engineering, Universidad del Norte, Km 5 vía Puerto Colombia, Barranquilla, Colombia

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Abstract

Understanding the behaviour of leakage current (LC) is not an easy task for engineers and new techniques are needed to identify the outage risk of some electrical circuits. Therefore, this paper presents a Generalized Linear Model (GLM) to characterise the LC variations in 230 kV ceramic insulators located in outdoor electrical substations subject to high pollution levels. The model uses data such as LC, acoustic emission (AE), and environmental variables (EVs). We found that the model represents the LC variation of electrical insulators of high voltage circuits. This model is useful for designing detection systems that represent the contamination levels and predict the behaviour of changes related to EV. With this model, we can determine the risk indicators for failure of electrical insulators in high-pollution areas.

Keywords

acoustic emissions; atmospheric variables; ceramic insulators; environmental analysis; generalized linear model; leakage current; pollution monitoring

Hrčak ID:

200600

URI

https://hrcak.srce.hr/200600

Publication date:

26.5.2018.

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