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Based on the dissolved gases analysis and grey relational theory, a fault diagnosis method for transformers is proposed. Fault diagnosis in transformers has several parameters such as the severity of fault and the kind of fault, a lot of typical fault samples are divided into several sets according to the fault type. The practical data are analyzed using grey relational analysis. The experiment showed...
Transformers are set underground and embedded in pit for a long time, so heat problem is very prominent. In this paper, the DGSR11-H-315/10 transformer was directly buried in pit, heat transfer models of embedding system (including embedding transformer, pit flow and soil medium) were established, and the numerical simulation was conducted for temperature and flow-field distribution. Comparison of...
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