Original scientific paper
https://doi.org/10.37798/2024731511
Improving the Reliability of Online Bushing Monitoring
Vedran Jerbić
; Končar - Electrical Engineering Institute Ltd., Zagreb, Croatia
Samir Keitoue
; Končar – Power Transformers Ltd., Zagreb, Croatia
Jurica Puškarić
; HEP Proizvodnja d.o.o., HPP Gojak, Ogulin, Croatia
Ivan Tomić
; HEP Proizvodnja d.o.o., HPP Gojak, Ogulin, Croatia
Abstract
This paper discusses the common issue of bushing failures in power transformers and presents methods for preventing such failures through online monitoring. The paper presents a method based on the comparison of bushing leakage currents from different transformers connected to the same busbars to overcome problems with unreliable measurement results due to grid voltage imbalance or frequent transformer outages.
Keywords
bushing; online monitoring; insulation diagnostic; capacitance; tan delta
Hrčak ID:
315567
URI
Publication date:
25.3.2024.
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