Simulation Of Metal Oxide Varistor Dynamic Behavior Under Fast Transients

Mohammad Firdaus, Mat Din (2005) Simulation Of Metal Oxide Varistor Dynamic Behavior Under Fast Transients. Project Report. UTeM, Melaka, Malaysia. (Submitted)

	PDF (24 Pages) Simulation_Of_Metal_Oxide_Varistor_Dynamic_Behavior_Under_Fast_Transients.pdf - Submitted Version Download (3MB)
	PDF (Full Text) Simulation_Of_Metal_Oxide_Varistor_Dynamic_Behavior_Under_Fast_Transients.pdf - Submitted Version Restricted to Registered users only Download (12MB)

Abstract

Transient voltage surges that occur in power systems have caused problems to industrial and residential systems. Therefore, surge protection model was designed to represent the transient surge phenomenon. The protection of electrical equipment in low voltage system using metal oxide varistor (MOV) is commonly used. MOV have dynamic characteristics that are significant for overvoltage coordination studies involving fast transient Data on characteristic of MOV indicates that for fast front surges, those with rise time less than 8fls, the peak of the voltage wave occurs before the peak of the current wave and the residual voltage across the varistor increases as the time to crest of the varistor discharge current This project concentrates on low voltage systems. Two models of MOV's have been simulated that is based on a well-known frequency dependent behavior. The simulations were performed with the Alternative Transient Program (ATP) version of the Electromagnetic Transients Program (EMTP). The results of the simulation were compared with both the experimental data

Actions (login required)

View Item