Performance comparison between Metal Oxide Varistor and Gas Discharge Tube against transient overvoltage due to lightning strike: article

This project presents the comparison of the performance protection devices of transient overvoltage due to lightning strike. There were two protection devices compared in this project which is Metal Oxide Varistor (MOV) and Gas Discharge Tube (GDT). These two types of transient protector are commonly used to suppress transient in many applications such as industrial process measurement, control instrumentation, high-frequency communications and ac-medium power supply line. Their sharp breakdown characteristic enables them to provide transient suppression performance. The simulation has been done using the Power System Aided Design (PSCAD) software base on UiTM Shah Alam’s distribution system. Results showed that Gas Discharge Tube performed better than Metal Oxide Varistor.