An accurate knowledge of the potential and tangential electrical field distribution along the interface insulator-vacuum is required for determining the mechanism leading to the flashover and, practically, for the optimisation of the design of the insulator profile. In this paper a comparison has been carried out between results obtained by numerical methods (Finite Difference Method and Charge Simulation Method) and the basic support they are able to give for the insulator design is also presented. A cylindrical chamfered profile is studied: good accordance is found for the results of the two methods provided the choice of the mesh and fictitious charge distribution is optimised.Some experimental results are also presented which indicate the effectiveness of the adopted insulator profile.
Design and experiments on vacuum bushings for HV apparatuses / Spagnuolo, G.; Tucci, V.; Lupo', Giovanni; Petrarca, Carlo; Vitelli, M.. - STAMPA. - 2:(1995), pp. 1-4. (Intervento presentato al convegno International Symposium on High Voltage Engineering tenutosi a Graz, Austria nel Agosto 1995).
Design and experiments on vacuum bushings for HV apparatuses
LUPO', GIOVANNI;PETRARCA, CARLO;
1995
Abstract
An accurate knowledge of the potential and tangential electrical field distribution along the interface insulator-vacuum is required for determining the mechanism leading to the flashover and, practically, for the optimisation of the design of the insulator profile. In this paper a comparison has been carried out between results obtained by numerical methods (Finite Difference Method and Charge Simulation Method) and the basic support they are able to give for the insulator design is also presented. A cylindrical chamfered profile is studied: good accordance is found for the results of the two methods provided the choice of the mesh and fictitious charge distribution is optimised.Some experimental results are also presented which indicate the effectiveness of the adopted insulator profile.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
