Electrode Materail Effect on Impulse Breakdown Property of Propylene Carbonate
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Abstract
In this paper, the three types of metal (stainless steel, brass and aluminum) are used to study the electrode material effect on the breakdown performance of propylene carbonate under impulse high voltage. The breakdown test shows that the impulse breakdown voltage of propylene carbonate under a pair of parallel-plate electrodes made of stainless steel, brass and aluminum decreases in sequence. To investigate the electrode material effect on breakdown property under impulse voltage, the electric field and space charge distributions in propylene carbonate under the three types of electrodes are measured. The measurement results indicate that the charge injection ability of aluminum electrodes is highest, followed by brass, and then stainless steel electrodes. Accordingly, the electric field distortion rate of propylene carbonate increases in the sequence of stainless steel, brass and aluminum electrodes. This finding illuminates that the difference of electric field distortion rate among the three types of electrodes leads to the difference of breakdown performance in propylene carbonate.
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