This month’s Featured Technical Paper is from the Proceedings of the 2020 International Conference of Doble Clients. The paper is titled: Practicing the New DGA Interpretation and Graphical Methods of CIGRE.
The new DGA interpretation scheme of CIGRE of 2019 is different from the new IEEE guide of 2019 in that it takes into account the type and location of faults in order to take actions on the equipment. This paper explains how to use this new CIGRE guide in step-by-step practical terms. The three main graphical methods that are needed to identify the multiple faults that may occur simultaneously in transformers, are the Duval Triangle 1, Triangle 5 and Pentagon 2.
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