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Transformer maintenance: Hydrogen – the most measured and monitored transformer parameter

Marius Grisaru ; Israel Electric Corporation

Sažetak

Hydrogen gas has been the most measured transformer parameter in the last 30 years. At least 95 % of all online monitors used for continuous monitoring of transformers measure hydrogen. The majority of online monitoring performed on transformers measure only hydrogen, or the composition of gases as one figure relative to hydrogen. Subsequently, the data obtained for these single dissolved gasses is huge compared to any other measurement for transformer maintenance. The hydrogen concentration value seems to be the greatest contributor to making what is the most important decision for transformers worldwide – determining the transformer condition.

While my previous columns looked at a big picture of transformer maintenance through oil analysis, this article will scrutinize a very small element; in fact, the smallest molecule measured inside the transformer. The article will review historical facts related to hydrogen-based maintenance as well as modern approaches to hydrogen detection, measurement and especially diagnosis. Based on all these evidence, it is probably the right time to consider monitoring other dissolved gases in order to obtain an improved diagnosis. Future gas monitors will need to have less false alarms and greater rate of success in predicting fault condition and prolonging the transformer life.

Ključne riječi

dissolved gas analysis; hydrogen; maintenance

Hrčak ID:

214104

URI

https://hrcak.srce.hr/214104

Datum izdavanja:

9.10.2018.

Posjeta: 2.555 *