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Technical Brochures

Very Fast Transient Overvoltages (VFTO) in Gas-Insulated UHV Substations



Recent developments in UHV substations renewed the importance of the very fast transient overvoltage (VFTO) analyses, which became a design factor for such UHV levels. VFTO are of greater concern at the highest rated voltages. Beside a detailed description of the state-of-the-art of science and technology the TB presents an insulation co-ordination approach dealing with VFTO. Technical information is given about VFTO simulation, determination of required withstand voltages, mitigation measures and special test requirements.

File Size: 1,2 MB

Pages NB: 32

Study Committee : D1 ?

WG (TF): WG D1.03

Year: 2012

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