Electromagnetic Field Distribution of Phase-sequence Orientation of a Double-Circuit Power Transmission Line Based on Finite Element Method

Thi s paper proposes a mathematical model of electric and magnetic fields caused by high voltage conductors of electric power transmission systems by using a set of second-order partial differential equations. This study has considered the effect of conductor phase-sequence orientation on electromagnetic fields emitted around a double-circuit, extra high-voltage, power transmission line. Five typically-used phase-sequence orientations in Thailand and one three-phase fault for 500-kV double-circuit transmission lines are examined. Computer-based simulation utilizing the two dimensional finite element method in the time harmonic mode, instructed in MATLAB programming environment with graphical representation for electric and magnetic field strength have been evaluated. The simulation results showed that the phase-sequence orientation is one among key factors to influence the electromagnetic field distribution around the transmission line.

[1]  S. J. Salon,et al.  Numerical Methods in Electromagnetism , 1999 .

[2]  Ren-Chuen Chen.  An iterative method for finite-element solutions of the nonlinear Poisson-Boltzmann equation , 2007 .

[3]  Sarawut Sujitjorn,et al.  Studies of mechanical vibrations and current harmonics in induction motors using finite element method , 2008 .

[4]  K.R. Demarest,et al.  Engineering Electromagnetics , 1997, IEEE Electrical Insulation Magazine.

[5]  G. B. Niles,et al.  Magnetic fields from electric power lines: theory and comparison to measurements , 1988 .

[6]  A.B.J. Reece,et al.  Induction motor analysis by time-stepping techniques , 1988 .

[7]  Li Li,et al.  Analysis of magnetic field environment near high voltage transmission lines , 1998, ICCT'98. 1998 International Conference on Communication Technology. Proceedings (IEEE Cat. No.98EX243).

[8]  Stephen A. Sebo,et al.  Study of transmission line magnetic fields , 1990, Proceedings of the Twenty-Second Annual North American Power Symposium.

[9]  C. Christopoulos,et al.  The Transmission-line Modeling Method: TLM , 1995, IEEE Antennas and Propagation Magazine.