Numerical calculation of electric field safety area of 10 kV transformer based on Maxwell

Abstract

There is alternating electromagnetic field around 10 kV transformer when it is live. When the worker enters the electric field during live maintenance, the distribution of electric field will change unevenly. When the electric field of human body reaches a certain intensity, it will bring personal injury to the worker. In order to avoid this situation, the finite element method is used to establish the transformer and human body model for numerical calculation of the working area. The distribution of electromagnetic field around the transformer and the change of electromagnetic field after joining the human body model are obtained. The safe distance is obtained by measuring the distance, so as to determine whether the corresponding protection needs to be taken. Protection measures. This paper provides technical and theoretical basis for the safe operation of live working of 10 kV high voltage transformer.