Simulation of Lightning Surge Propagation in Transmission Lines Using the FDTD Method

This paper describes a finite-difference time-domainFDTD) method to analyze lightning surge propagation in electric transmission lines. Numerical computation of solving the Telegraphist-s equations is determined and investigated its effectiveness. A source of lightning surge wave on power transmission lines is modeled by using Heidler-s surge model. The proposed method was tested against medium-voltage power transmission lines in comparison with the solution obtained by using lattice diagram. As a result, the calculation showed that the method is one of accurate methods to analyze transient lightning wave in power transmission lines.

Authors:

• Kokiat Aodsup
• Thanatchai Kulworawanichpong

Keywords:

• Traveling wave
• Lightning surge
• Bewley lattice diagram
• Telegraphist's equations
• Finite-difference time-domain (FDTD) method

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