| Summary: | Student Number : 0418388R -
MSc(Eng) research report -
School of Electrical and Information Engineering -
Faculty of Engineering and the Built Environment === Due to the high soil resistivities and high frequency of lightning strikes in South Africa,
the background theory about the effect of soil resistivity on the LV surge environment is
important, but the present local and international standards do not give reasonable
explanations for this effect. The previously published experimental results and research
results related to this effect were investigated. From these investigations, it can be shown
that the soil resistivity can affect surge generation, surge propagation and surge
attenuation significantly. Also, soil resistivity plays a main role in the lightning surges
caused by both direct strikes and indirect strikes, which can cause severe damage to the
LV distribution system. Soil resistivity also has a significant impact on the resistance of
an earth electrode.
|
|---|
