Numerical Simulation of Electrode Structure on High Voltage Pulse Discharge Characteristics

Abstract

For the study of the different electrode structures of the high voltage pulse discharge breakdown process of the insulating medium, the numerical simulation software is compiled to establish two kinds of the electrode structure of high voltage pulse discharge three-dimensional model, finite element difference method to simulate the expansion of plasma channel, the discharge characteristics of electrode structure internal voltage, and current of plasma channel and the impact of energy consumption. The simulation results show that, compared with the needle-needle electrode structure, the needle-plate electrode structure has a shorter time to reach the critical field strength of distilled water smaller breakdown voltage, shorter time to establish the discharge channel, smaller equivalent resistance, faster extension speed of the discharge channel, and less energy consumption for breakdown. And other conditions are the same. The results of this study can provide a theoretical reference for the structural design of high-voltage pulse-crushing electrodes.