6533b7d2fe1ef96bd125e2fa
RESEARCH PRODUCT
Transient DC-Arc Voltage Model in the Hybrid Switch of the DTT Fast Discharge Unit
Carmelo Riccardo LopesPietro ZitoGaetano ZizzoGuido AlaAlessandro Lampasisubject
SuperconductivityTokamakMaterials scienceNuclear engineeringDivertorPhase (waves)Quench protectionSuperconducting magnetHybrid circuit breakerArc voltagelaw.inventionPower (physics)Arc (geometry)Settore ING-IND/33 - Sistemi Elettrici Per L'EnergiaSettore ING-IND/31 - ElettrotecnicaFast discharge unitlawTransient (oscillation)Voltagedescription
The focus of this work is the transient modelling of the DC-arc voltage on a Hybrid Switch (a mechanical switch in parallel with a static switch) of a key protection component called Fast Discharge Unit (FDU) in the Divertor Tokamak Test (DTT). The DTT facility is an experimental tokamak in advanced design and realization phase, which will be built in the ENEA Research Centre in Frascati (Italy). The FDU allows the safe discharge of the Toroidal Field (TF) superconducting magnets when a quench is detected or a failure occurs in the power supply or in the cryogenic system. In this work, the arc conductance of the mechanical By-Pass Switch (BPS) of the Hybrid Switch is modelled using the well-known Mayr-Cassie equations and the Paukert arc parameters. The simulations show a good agreement with the expected results in terms of voltage and current transient from the mechanical switch to the static switch.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2021-09-01 |