Title of article :
Novel techniques for treating singularity problems in the boundary element method applied to electric field evaluation within the tank of a power transformer
Author/Authors :
Faiz، نويسنده , , J.، نويسنده , , Ojaghi، نويسنده , , M.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Abstract :
Different shapes of the boundary surfaces within the
tank of power transformers are classified into flat and round categories.
By defining a surface charge distribution on the surface of
the elements, suited in forming each type of those surfaces, the governing
potential and field intensity equations are derived. The proposed
surface charge distribution functions are such that the continuity
of the charge distribution is guaranteed on the boundaries of
the adjacent elements. Then by introducing different techniques,
singularity problems on the integrands of the elements due to the
flat and round surfaces are essentially solved. Fulfillment of these
techniques leads to a quick evaluation of the electric field. Analysis
of two typical examples indicates the high accuracy of these techniques.
Finally the electric field within the tank of a power transformer
is evaluated, based on the boundary element method (BEM)
in which the above mentioned techniques have been used.
Keywords :
Electric field computation , Numerical techniques , Power Transformers , boundary element method.
Journal title :
IEEE TRANSACTIONS ON POWER DELIVERY
Journal title :
IEEE TRANSACTIONS ON POWER DELIVERY