Very-fast-front overvoltages - Summary

The purpose of the study was verifying the severity of the very-fast-front overvoltages in a high voltage Gas Insulated Station (GIS), due to switching, that can damage the transformers.

Calculated transients on HV GIS substation did not put into evidence any critical overvoltage values. The results must be considered as negligible surges and we can conclude that no fault due to disconnector/circuit-breaker should be experienced!

Description