3-D nonlinear transient electromagnetic analysis of short circuit electromagnetic forces in a three-phase enclosure-type gas insulated bus

Transient Finite-Element Analysis of Short-Circuit Electromagnetic Forces in Isolated Phase Buses

“…The FEM has been successfully applied to IPBs for fields, eddy currents and losses calculations, and short-circuit forces (Choi, 2001;Ho et al, 2007Ho et al, , 2003Labridis & Dokopoulos, 1992, 1996Shah et al, 1999;Hassanpour Isfahani & Vaez-Zadeh, 2007;Knopf & Cupsa, 1994). The superior potential of the FEM in the prediction of these issues is demonstrated in comparison with the experimental method (Takeuehi et al, 2000;Ho et al, 2003Ho et al, , 2007.…”

“…When using IPBs, instead of other types of connecting buses, the magnetic field density reduces and the security of the system increases because of the isolation between phases. To achieve a reliable IPB design, accurate understanding of its magnetic field distribution, eddy current losses, thermal conditions, and short-circuit forces are required (Takeuehi et al, 2000;Conangla & White, 2000;Piatek et al, 1998;Choi, 2001;Benato et al, 2002;Ho et al, 2003;Benato & Dughiero, 2003). Short-circuit forces are the most important factor in the mechanical design of IPBs, since they may cause permanent damage to the IPBs.…”

“…However, this method cannot consider the distribution of eddy currents and may cause erroneous results at large currents (Takeuehi et al, 2000). An analytical method has been developed for the IPB field and force computation (Dokopoulos & Tamakis, 1991).…”

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

“…FEM has been successfully applied to IPBs for fields, eddy currents and losses calculations [4, 6, and 16]. It is also used to compute transient electromagnetic forces in other type of bus bars [1,[17][18][19][20]. Whereas, the calculation of transient short circuit forces in IPBs via FEM has not gained enough attention.…”

“…Imaging method has been applied to calculate the forces on IPBs in many researches [10][11][12][13]. However, this method cannot consider the distribution of eddy currents and may cause erroneous results at large currents [1]. An analytical method has been developed for the IPB field and force computation [14].…”