TY - GEN
T1 - The investigation of dielectric barrier impact on the breakdown voltage in high voltage systems by modeling and simulation
AU - Foruzan, Elham
AU - Vakilzadian, Hamid
PY - 2015/9/30
Y1 - 2015/9/30
N2 - Nonpressurized air is used extensively as a basic insulation medium in medium/high voltage equipment. An inherent problem of air-insulated designs is that the systems tend to become physically large. Application of dielectric barriers can increase the breakdown voltage and thereby decrease the size of the equipment. In this paper, the impact of polytetrafluoroethylene (PTFE) and polyvinyl chloride (PVC) as dielectric barriers on breakdown voltage for DC and AC voltages were investigated by developing two geometric models. In the first model, it was assumed that a U-shaped electrode was covered with PVC dielectric. In the second model, it was assumed that PTFE dielectric was inserted in the air gap between electrodes. Both models were simulated using COMSOL Multiphysics software. The simulation results were verified by experimentation in the lab. The results show that a layer of PTFE and PVC dielectrics behaved as a mechanical obstacle, and they increased the voltage breakdown channel. In addition, the residual charges over the barrier changed the electric field distribution, resulting in a significant increase in the breakdown voltage.
AB - Nonpressurized air is used extensively as a basic insulation medium in medium/high voltage equipment. An inherent problem of air-insulated designs is that the systems tend to become physically large. Application of dielectric barriers can increase the breakdown voltage and thereby decrease the size of the equipment. In this paper, the impact of polytetrafluoroethylene (PTFE) and polyvinyl chloride (PVC) as dielectric barriers on breakdown voltage for DC and AC voltages were investigated by developing two geometric models. In the first model, it was assumed that a U-shaped electrode was covered with PVC dielectric. In the second model, it was assumed that PTFE dielectric was inserted in the air gap between electrodes. Both models were simulated using COMSOL Multiphysics software. The simulation results were verified by experimentation in the lab. The results show that a layer of PTFE and PVC dielectrics behaved as a mechanical obstacle, and they increased the voltage breakdown channel. In addition, the residual charges over the barrier changed the electric field distribution, resulting in a significant increase in the breakdown voltage.
KW - Breakdown Voltage
KW - Dielectric Barrier
KW - High Voltage Systems
KW - Modeling and Simulation
UR - http://www.scopus.com/inward/record.url?scp=84956863803&partnerID=8YFLogxK
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U2 - 10.1109/PESGM.2015.7285653
DO - 10.1109/PESGM.2015.7285653
M3 - Conference contribution
AN - SCOPUS:84956863803
T3 - IEEE Power and Energy Society General Meeting
BT - 2015 IEEE Power and Energy Society General Meeting, PESGM 2015
PB - IEEE Computer Society
T2 - IEEE Power and Energy Society General Meeting, PESGM 2015
Y2 - 26 July 2015 through 30 July 2015
ER -