The Analysis Of Lightning Overvoltage By EMTP For Lightning Protection Design Of 500 kV Substation

Noor Azila , Khazaimah (2006) The Analysis Of Lightning Overvoltage By EMTP For Lightning Protection Design Of 500 kV Substation. Project Report. UTeM, Melaka, Malaysia. (Submitted)

	PDF (24 Pages) The_Analysis_Of_Lightning_Overvoltage_By_EMTP_For_Lightning_Protection_Design_Of_500_kV_Substation_-_24_Pages..pdf - Submitted Version Download (1MB)
	PDF (Full Text) The_Analysis_Of_Lightning_Overvoltage_By_EMTP_For_Lightning_Protection_Design_Of_500_kV_Substation.pdf - Submitted Version Restricted to Registered users only Download (6MB)

Abstract

In order to meet increasing power demand, the 500 kV power systems are under consideration in some regions of Middle Asia country. As the power system voltage becomes higher, the cost for the power system insulation greatly increases. The 500 kV transmission systems will become the basis of power system in its country and they require much higher system reliability. Consequently, by the methods of limiting overvoltages effectively, a reasonable insulation design and coordination have to be accomplished. In order to determine the various factors for the insulation design, the EMTP (Electro-magnetic transient program) is used for the magnification of transient phenomena in the planned network. In this project, there are explanations about the simulation results of lightning overvoltages by EMTP of 500 kV transmission line. To get the reliable results, the multi-story tower model and EMTPffACS model were introduced for the simulation of dynamic arc characteristics. From the simulation, the effect of the direct lightning stroke to the transmission line model can be observed. The observations are done by analyzing and comparing the waveform characteristic of the simulation result when the lightning stroke model is applied at the different point of the transmission line model. The peak value of the overvoltage varies at when the lightning stroke model is applied at the different point of the transmission line model.

Actions (login required)

View Item