Lightning Over-Voltages on Amman-Aqaba 400 KV Line

an investigation of over-voltages caused by lightning in transformer winding based on the monte carlo method

the paper presents simulation results for the propagation of lightning surges along a transmission line and the overvoltages generated in a transformer at the end of the line. it is shown that the monte carlo simulation method provides more realistic assessments than the deterministic methods. it has also been shown that increasing capacitance in transformers results in reduced levels of overvo...

Impact of Series FACTS Devices (GCSC, TCSC and TCSR) on Distance Protection Setting Zones in 400 kV Transmission Line

Generation of Transient Voltages Due to Direct Lightning on Grounding Grids

The analysis of EMC problems caused by transient current and voltage on grounding grids created by lightning surges is carried out in the present work. Although this problem is considered by Zago.F et al. [26] complete data on the variation of transient voltages as a function of time under different resistivity conditions is not available. Considering the TLM concept has reported by Zago.F comp...

Designing Concept on Lightning Protection of Overhead Power Distribution Line

The principle is shown for lightning protection of power distribution lines taking the effects of surge arresters, overhead ground wires and their combined use into consideration. Moreover an outline of a rational design method targeting direct lightning hits, induced overvoltages and backflow currents from high structures.

On the transmission line model for lightning return stroke representation

[1] The widely used transmission-line (TL) model of lightning return stroke in a vertical channel is most rigorously represented by a vertical phased array of current sources that produce a spherical transverse electromagnetic (TEM) wave in the case of return-stroke speed v equal to the speed of light c. If the radius of the lightning channel were equal to zero, the equivalent representation co...