Numerical Simulation of the High-Voltage Switch Operating in a Self-Breakdown Mode

In this article we construct the model of a high-voltage switch. The proposed model is based on the drift-diffusion approximation and it is constructed according to the principles of a two-moment discharge plasma model. Using this model, it is possible calculating the time-dependent characteristics of the switching process with high accuracy both in a simplified one-dimensional formulation as well as in the realistic two-dimensional axisymmetric configuration. The obtained numerical results perfectly fit with the experimental data of switching process and the triggering stability.