New Finite Element Field Calculation Technique in Which Continuity of Electric Flux is Satisfied

A new finite element technique to calculate electric field strength accurately has been developed. In this technique, new expressions for potential distribution in an element are derived in order to include electric flux densities as unknowns in basic equations. Trial calculations of coaxial cylinder models were performed by traditional methods and by new methods to examine the accuracy of field strength. The results show that the accuracy of field strength calculated by the new technique is much higher. By the calculation of a spacer which is used in SF6-gas-insulated equipment, the new technique was confirmed to be effective for practical use.