Accurate Determination of Electromagnetic Forces in Isolated Phase Buses under Short Circuit Conditions

Abstract

Short circuit electromagnetic forces have vital role in the design of isolated phase buses. Therefore, accurate determination of these forces is needed. In this paper these forces as well as eddy currents and magnetic fields are calculated using finite element method. A program is then developed to find the worst conditions at which maximum short circuit electromagnetic forces occur. The results are discussed and conclusions are drawn for design purposes.Index Terms--Isolated phase bus, Electromagnetic force, Magnetic field, Finite element method.

Numerical Calculation of Short Circuit Electromagnetic Force in Isolated Phase Bus

“…It also is used to compute transient electromagnetic force on other type of buses [4][5]. Finite element methods based on ANSYS are used to calculate electromagnetic force [6]. However, more efforts is still needed to investigate characteristic of short circuit electromagnetic force.…”