An innovative approach for the voltage breakdown prediction in high voltage systems, insulated by large vacuum gaps, has been recently formulated and experimentally benchmarked, which is based on the modelling of the whole system in terms of breakdown probability by Weibull's distribution, provided an infinitesimal breakdown probability can be associated to each particle trajectory between different electrodes. In this work an analytical solution is proposed to calculate the particle trajectories over a tetrahedral mesh, by means of complementary formulations of the electrostatic field laws. This tool is benchmarked on a reference configuration and applied to estimate the breakdown probability for a very complex multi-electrode multi-voltage system.
A novel tool for breakdown probability predictions on multi-electrode multi-voltage systems
BETTINI, PAOLO;PILAN, NICOLA;
2013
Abstract
An innovative approach for the voltage breakdown prediction in high voltage systems, insulated by large vacuum gaps, has been recently formulated and experimentally benchmarked, which is based on the modelling of the whole system in terms of breakdown probability by Weibull's distribution, provided an infinitesimal breakdown probability can be associated to each particle trajectory between different electrodes. In this work an analytical solution is proposed to calculate the particle trajectories over a tetrahedral mesh, by means of complementary formulations of the electrostatic field laws. This tool is benchmarked on a reference configuration and applied to estimate the breakdown probability for a very complex multi-electrode multi-voltage system.
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