TITLE:
Analysis of the Behavior of a HV AC Line during an Atmospheric Discharge and Evaluation of the Spatio-Temporal Distribution of the Lightning Current Wave
AUTHORS:
Anthony Bassesuka Sandoka Nzao
KEYWORDS:
Analysis, Lightning, HV Line, Pylons, Kirchhoff Equations, Alembert Equation, Engineering Model, Transmission Line
JOURNAL NAME:
Open Journal of Applied Sciences,
Vol.12 No.2,
February
18,
2022
ABSTRACT: In high voltage networks for the transport of electrical energy,
lightning, a phenomenon as dangerous as it is impressive, with an easily recognizable
form, can affect a power line by striking either a phase conductor, a tower or
a guard cable, thus causing more dangerous and constraining stresses on the
lines for its proper operation. Thus, this article aims to analyze the behavior
of a HV line during an atmospheric discharge and assess the spatial and
temporal distribution of the lightning current wave. For this purpose, the
generalities on the transmissible power in case of link without resistance and
the modeling of the atmospheric surge propagation established on the basis of
the theory of the lines with distributed constants implementing the wave
equation known as the Alembert equation have been developed. Through this
research, we are interested in the study of the space-time distribution of the
lightning current wave in order to model the radiated electromagnetic field and
to examine the influence of the atmospheric discharge induced overvoltage on
the transportable power of a High Voltage AC Transmission line, for a good
selective protection in order to illuminate the parasites. The 2D simulation
based on engineering and “Transmission Line” models have been developed as well
as the verification of the coherence of the different models, by comparing the
fractal dimensions of the program results with those of the experimentally
obtained figures.