Simulation of high-voltage equipment electromagnetic radiation

Abstract

The article is devoted to problems of simulation an electromagnetic field distribution near high-voltage power equipment. A radiating model of the power autotransformer 500 kV is presented. This model includes sizes and relative positioning of the autotransformer’s case and radiating elements, different constructions and earth existence, materials properties. The elements and constructions, located near the high-voltage equipment, such as cooling radiators, wireline passes, additions to lead-in wires, auxiliary columns, support for bus wire fastening, fire extinguisher system, concrete partitions are considered. Models of an electrical power object which contains above-mentioned elements and constructions are developed. The models are used for calculation electromagnetic field distribution on the electrical power object. Pictures of electromagnetic field distribution on a real electrical power object are calculated and presented in the form of direction patterns. Influence of the separate elements and constructions on the form of the directional pattern of the electrical power object model is estimated both in a form and in absolute values of electric-field strength of vertical polarization. The results achieved might be used at diagnostics of the high-voltage power equipment by electromagnetic control method.