Analysis And Suppression Of Transient Over-Voltages In GIS

Analysis And Suppression Of Transient Over-Voltages In GIS

Estimation of Transient over Voltages in GIS

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In our country a few Gas Insulated Substations (GIS) units have been in operation and large number of units are under various stages of installation. Although GIS have been in operation for several years, some of the problems need attention. These problems include, generation of over voltage during dis-connector operations, line to enclosure faults etc. These over voltages are caused in two ways, viz., due to switching operations of circuit breaker and line to enclosure faults. In the project work, very fast transient over voltages are generated due to switching operations have been analyzed a...