The limits imposed by international laws on the levels of exposition of the population to magnetic fields require a careful evaluation of the field generated by electric power plants. This paper reports experimental results and numerical analysis for the evaluation of the stray magnetic field of a middle voltage, 1000 kVA transformer. The measurements were performed in an anechoic room, in short circuit condition along different directions in space. A numerical analysis based on two different approaches with 3D FEM is used to analyze the experimental results. The analysis shows very good agreement with the experimental results provided that a correct evaluation of the stray field generated by the bars is obtained.
Experimental and Numerical Analysis of Stray Field From Transformers
BRESCHI, MARCO;CRISTOFOLINI, ANDREA
2007
Abstract
The limits imposed by international laws on the levels of exposition of the population to magnetic fields require a careful evaluation of the field generated by electric power plants. This paper reports experimental results and numerical analysis for the evaluation of the stray magnetic field of a middle voltage, 1000 kVA transformer. The measurements were performed in an anechoic room, in short circuit condition along different directions in space. A numerical analysis based on two different approaches with 3D FEM is used to analyze the experimental results. The analysis shows very good agreement with the experimental results provided that a correct evaluation of the stray field generated by the bars is obtained.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
