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Soil ionization, that is, electrical discharges developing in ground, occurs due to the high electric field associated mainly with lightning currents. Despite having attracted a great interest among researchers from the beginning of the 20th century, soil ionization is far from being completely understood owing to the complex nature and structure of soil. This study investigates breakdown of several...
Lightning stroke has strong impact on the underground (UG) cables. Assessment of the effect of lightning on UG cables is important for optimal design of protection system and to enhance the reliability of power transmission and distribution. In this work, the effect of lightning on UG cables is studied based on the resistivity of the soil. An empirical formula is used to estimate the magnitude of...
Grounding is the fundamental measure of lightning protection for power systems, industries, and buildings, and the lightning impulse behavior of grounding electrodes plays a very important role. How to correctly consider the lightning impulse characteristics of grounding electrodes is the fundament in lightning protection design. This paper summarized the progress in lightning impulse characteristics...
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