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Inftech."],"published-print":{"date-parts":[[2022,2]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>At a\u00a0time when the optimal utilization of resources is becoming ever more important, the condition monitoring of electrical equipment is also becoming increasingly essential. The dissolved gas analysis (DGA), an internationally accepted method for the condition assessment of transformers, plays a key role in this respect. By continuously monitoring the key gases in a\u00a0transformer, incipient faults can be detected at an early stage and suitable maintenance measures can be initiated. This ability to plan maintenance measures may provide the key to cutting costs and increasing the overall system reliability. In free-breathing transformers, degassing or gas dissolving can occur over time, which may influence the interpretation basis of the DGA. The reason for this is that molecules always strive for equal distribution in a chemical-physical system. Various theories, which are based on the determination of physical and chemical material properties, can be used to describe these processes. Here, the Henry constants describe the concentration equilibrium at the phase interfaces and the diffusion coefficients describe the movement of the gas molecules dissolved in mineral oil. This paper presents mathematically or experimentally determined values and compares them with the literature. Furthermore, it describes the influence of the key gases investigated and the temperature dependence.<\/jats:p>","DOI":"10.1007\/s00502-022-00992-8","type":"journal-article","created":{"date-parts":[[2022,2,16]],"date-time":"2022-02-16T09:04:00Z","timestamp":1645002240000},"page":"88-97","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Online dissolved gas analysis used for transformers\u00a0\u2013 possibilities, experiences, and limitations","Kontinuierliche Gas-in-\u00d6l-Analyse bei Transformatoren\u00a0\u2013 M\u00f6glichkeiten, Erfahrungen und Grenzen"],"prefix":"10.1007","volume":"139","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-7428-913X","authenticated-orcid":false,"given":"Christof","family":"Riedmann","sequence":"first","affiliation":[]},{"given":"Uwe","family":"Schichler","sequence":"additional","affiliation":[]},{"given":"Wolfgang","family":"H\u00e4usler","sequence":"additional","affiliation":[]},{"given":"Wolfgang","family":"Neuhold","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2022,2,16]]},"reference":[{"key":"992_CR1","series-title":"India","volume-title":"DGA diagnostics save transformers\u2014case studies","author":"D Mehta","year":"2015","unstructured":"Mehta\u00a0D, Kundu\u00a0P, Chowdhury\u00a0A, Lakhiani\u00a0V (2015) DGA diagnostics save transformers\u2014case studies. 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