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

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.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11588/518244
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