Frequency and Time Response of Power Plant Grounding System Exposed to Lightning Strike

2016 ◽  
Vol 6 (2) ◽  
pp. 512
Author(s):  
Srete N Nikolovski ◽  
Zoran Baus ◽  
Goran Knežević
Keyword(s):  
Magnetic Field ◽  
Power Plant ◽  
Scalar Potential ◽  
Three Dimensional ◽  
Lightning Strike ◽  
Fast Fourier Transformation ◽  
Theory Approach ◽  
Grounding System ◽  
Lightning Current ◽  
Electric And Magnetic Field

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.

scholarly journals Frequency and Time Response of Power Plant Grounding System Exposed to Lightning Strike

2016 ◽  
Vol 6 (2) ◽  
pp. 512
Author(s):  
Srete N Nikolovski ◽  
Zoran Baus ◽  
Goran Knežević
Keyword(s):  
Magnetic Field ◽  
Power Plant ◽  
Scalar Potential ◽  
Three Dimensional ◽  
Lightning Strike ◽  
Fast Fourier Transformation ◽  
Theory Approach ◽  
Grounding System ◽  
Lightning Current ◽  
Electric And Magnetic Field

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.

The Perturbation of Alternating Geomagnetic Fields by an Island Near a Coastline

1973 ◽  
Vol 10 (4) ◽  
pp. 510-518 ◽  
Author(s):  
L. R. Lines ◽  
F. W. Jones
Keyword(s):  
Magnetic Field ◽  
Field Component ◽  
Method Of Lines ◽  
Three Dimensional ◽  
Field Vector ◽  
Electric Field Vector ◽  
The Earth ◽  
Electric And Magnetic Field ◽  
Contour Plots ◽  
Geomagnetic Fields

The numerical method of Lines and Jones for investigating the problem of the perturbation of alternating geomagnetic fields by three-dimensional conductivity inhomogeneities embedded in a layered Earth is extended to include models in which vertical discontinuities may extend to the grid boundaries. The case considered is that in which the electric field vector is parallel to the strike of the discontinuities at such boundaries. A model which includes an island near a coastline is studied and contour plots as well as profiles of the electric and magnetic field component amplitudes at the surface of the Earth are given.

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