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This paper deals with the reduction of electric and magnetic field emissions caused by the single-circuit 400 kV overhead power line. These emissions are especially important on the border of the overhead power line right of way, where electromagnetic field emissions should be under prescribed limits. This paper deals with the two solutions. Firstly the usage of higher to wers is investigated, while...
Paper describes a method for finding transmitter parameters (location, power and horizontal direction) for optimal electromagnetic radiation distribution in the observed area. Constraints are protected areas inside the observed area where strength of electric field is limited because of a permanent people presence. In the observed area one wishes to obtain the strength of electric field which is higher...
Electric field optimization is the key task for vacuum circuit breakers design. By the electric field calculation, the isopotential of a semi-plane flat electrode with infinitesimal small thickness is almost hemicycle, and the figure of an actual shield should be what the isopotential rotates around its shaft for a circular course, but not other figures. Three common figures of middle shield have...
This paper presents a method for analyzing and optimizing electromagnetic susceptibility (EMS) of solid state relay (SSR) in the presence of incident wave. The model of SSR is built in Ansoft HFSS and analyzed by finite element method (FEM). The SSR is tested with electromagnetic interference (EMI) from different directions and the results show that the SSR is sensitive to the EMI whose electrical...
Some methods that combine FEM (finite element method) and nonlinear programming are applied to optimization design of high voltage electric field. The use of FEM as a cost function evaluator is constrained by the sequential processes of geometry construction, meshing, and solving in the post-processing stages. The computational overhead makes FEM-based optimization unattractive despite its accuracy...
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