Open AccessFrequency and Time Response of Power Plant Grounding System Exposed to Lightning Strike
Author(s) -
Srete Nikolovski,
Zoran Baus,
Goran Knežević
Publication year - 2016
Publication title -
international journal of electrical and computer engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.277
H-Index - 22
ISSN - 2088-8708
DOI - 10.11591/ijece.v6i2.pp512-525
Subject(s) - earthing system , ground , lightning strike , scalar potential , electrical engineering , scalar (mathematics) , voltage , electromagnetic field , electric field , electromagnetic compatibility , electric power system , impulse (physics) , acoustics , physics , computer science , engineering , power (physics) , mathematics , classical mechanics , geometry , quantum mechanics
This paper examines the frequency response of power plant grounding system exposed to the lightning current. Large amount of current generated by the stroke flow in the grounding system of power plant and dissipate in the soil. The electric and magnetic field generated by such high voltages and currents may cause damage of equipment and may be dangerous for the personnel in power plant. For the every given frequency obtained using Fast Fourier Transformation (FFT) of lightning current impulse, electromagnetic field theory approach is used to solve Maxell’s equation and compute scalar potential, electric and magnetic field. Also, the influence of the point in which lightning current is diffused in the grounding system is presented. Three dimensional plots of spatial distribution of scalar potential, electric and magnetic field are presented. The time domain response of scalar potential, electric and magnetic field on one profile is also presented.