Simulation study on line surge arrester and placement of surge arrester / Nur Amalina Azhari

Lightning is a very impressive phenomenon that occurs in nature. The amount of energy contained in a lightning stroke is very high and it can be extremely destructive. Electric distribution networks are particularly vulnerable to lightning strokes. A single stroke to a distribution line can be sufficient to cause a blackout throughout a feeder. To prevent this, power systems are protected with lightning rods, ground wires and surge arresters. This paper is to presents the analysis on effects of lightning and surge arrester in power distribution system. Lightning surge is modelled using equation and will be use to" analyze its effects to the system. In order to investigate the effects of lightning and surge arrester in power distribution system, a simulation using PSCAD simulation software has been carried out. Simulation results have illustrated the output waveform of lightning surge, the model of fast front surge arrester and the effects of lightning and surge arrester in test system. This project also presents the PSCAD based transient modelling of a three phase transmission line circuit for analysing their performance during lightning. The method used to analyze the increase in voltage due to lightning. Circuit model is developed for a three phase model and the same is used for simulation studies. This study generalizes the modelling details and performing the analysis of lightning surge on surge arrester placement using the PSCAD software. The outcome of this paper would be the effect of surge arrester placement in terms of voltage level measured at particular points.