The Effect of GIBBS Factor on Transient Analysis in Underground Power Cables

Year 2019, Volume: 23 Issue: 5, 934 - 941, 01.10.2019

Yılmaz Uyaroglu Selcuk Emiroglu

https://doi.org/10.16984/saufenbilder.529265

Abstract

In this
work, the transient over – voltage phenomena occurred at 34.5 kV AC underground
cable transmission systems during the closure of the underground cables is to
be studied and simulated by using MATLAB program. Then, the transient voltage
occurred at the underground cables is analyzed by using modified Fourier
transform. The studied systems of underground cables are firstly modeled in
frequency domain. Transient voltages induced at the sending-end and receiving-end
terminals of an underground cable of transmission system are calculated in
frequency domain and using inverse Fourier Transform, the sending end and receiving
end voltages are obtained by converting to time domain. The effects of cable
length and source impedance on transient over – voltage phenomena at
underground cables are investigated. Also, the effects of GIBBS factor in
transients are researched in order to eliminate GIBBS oscillations. Numerical
simulations are presented to demonstrate the transient voltages induced at the
terminals of sending-end and receiving-end of an underground cable at
transmission system and the effects of GIBBS factor.

Keywords

Transient analysis, underground cables, Fourier transforms, GIBBS oscillation

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