Trap for Deactivation of Conducting Particle in Gas-insulated Switchgear

This paper presents the study of the simple particle traps for deactivation particle movement in gas insulated switchgears. The study aims to investigate the designed trap to stop the movement of the particle by using the dielectrophoretic (DEP) force in the case of moving along the dielectric surface placed on the ground electrode. Numerical calculation results show electric field distribution in the channel between high voltage and ground electrodes with and without particle trap to clarify the particle motion under the electric field. Particle traps are fabricated with silicone and polyimide. The particle deactivation performance is observed for two types of particle traps. The experimental results show that the first type of trap can deactivate 53% and 87% of all experiment conditions for aluminum and stainless-steel particle, respectively. The first type and second type can trap aluminum particles at 10% and 80%, respectively. The particle’s velocity under an electric field is an important parameter in predicting the trap performance.