Publication

Use of genetic algorithms to extract primary lightning current parameters

Farhad Rachidi-Haeri, José-Luis Bermudez
2002
Conference Papers

Abstract

In this paper, we propose a method based on genetic algorithms to extract primary lightning return stroke current parameters from currents measured using instrumented towers, including the possibility of contamination by multiple reflections occuring along the tower. The algorithm allows additionally the evaluation of reflection coefficients at the top and at the bottom of the tower. The proposed method is validated using first theoretically-generated current waveforms and then, using experimental data of lightning current measured at Peissenberg tower

Official source

https://infoscience.epfl.ch/entities/publication/f0c865af-3213-473b-8fe2-9550eee39540

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Farhad Rachidi-Haeri, José-Luis Bermudez
2002
Conference Papers

Abstract

Official source

https://infoscience.epfl.ch/entities/publication/f0c865af-3213-473b-8fe2-9550eee39540

About this result

Related concepts (32)

Reflection (physics)

Reflection is the change in direction of a wavefront at an interface between two different media so that the wavefront returns into the medium from which it originated. Common examples include the reflection of light, sound and water waves. The law of reflection says that for specular reflection (for example at a mirror) the angle at which the wave is incident on the surface equals the angle at which it is reflected. In acoustics, reflection causes echoes and is used in sonar. In geology, it is important in the study of seismic waves.

Fresnel equations

The Fresnel equations (or Fresnel coefficients) describe the reflection and transmission of light (or electromagnetic radiation in general) when incident on an interface between different optical media. They were deduced by Augustin-Jean Fresnel (freɪˈnɛl) who was the first to understand that light is a transverse wave, even though no one realized that the "vibrations" of the wave were electric and magnetic fields.

Electric current

An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is defined as the net rate of flow of electric charge through a surface. The moving particles are called charge carriers, which may be one of several types of particles, depending on the conductor. In electric circuits the charge carriers are often electrons moving through a wire. In semiconductors they can be electrons or holes.

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Use of genetic algorithms to extract primary lightning current parameters

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