The more the rate of subdivision of the grid into subareas is high, the more the Maxwell's subareas method of studying the current field generated by a grounding grid is accurate. In this paper the authors suggest a fuzzy approach applied to a horizontal cylindrical electrode which allows them to determine in advance the errors due to the different rates of subdivision.
All the algorithms introduced by the authors in their finite‐element computational program for studying fields easily and quickly are described in the paper. Moreover, an application of the analysis of the thermal field to a three‐phase transformer is proposed. This analysis gives a valid help to designing transformers having to provide services to satisfy some particular needs.
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