The Simulation Study of Electromagnetic Wave Propagation Characteristics in Closed GIS Tank

Jun Chen; Jin Bin Li; Tian Xia; Shi Ming Zhu; Yuan Yang; Ning Yang; Jun Hao Li

doi:10.4028/www.scientific.net/AMM.654.156

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 654The Simulation Study of Electromagnetic Wave...

The Simulation Study of Electromagnetic Wave Propagation Characteristics in Closed GIS Tank

Abstract:

Partial discharge (PD) detection using UHF signal is a well known advanced detecting method in GIS and has been actively studied. Numerical simulation using finite difference time domain (FDTD) algorithm is performed to investigate the transmission characteristics of W-M waves excited by partial discharge through straight closed tank of a GIS bus in. The time domain decaying characteristics and frequency domain resonance characteristics is studied in this paper. The simulation results shown that for the closed tank, E-M waves attenuate little during transmission and distribute oscillating in the tank. The distributions are symmetrical at 0 degree and 180 degrees and the energy at the two types of degrees is the same.