プロピレンカーボネート中の電界分布の光学的時系列測定

概要

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It is necessary for electrical insulation diagnosis to obtain information about the electric field distribution and the space charge distribution in insulation materials. We have measured nonuniform electric field vector distributions in liquid dielectrics using our original method based on electrooptic Kerr effect and CT method. We carried out the time sequence measurement of electric field vector distribution in propylene carbonate which is a dielectric liquid. When the DC voltage pulse of 200msec width was applied to a parallel plane electrode system, electric field vector distributions, which had a shape of the circle with 12 mm in diameter, were measured at the time interval of 3 ms. The measurements were carried out with changing the conductivity of the liquid. The distribution after a while from applying the voltage pulse seemed to be disturbed. The observation of the time that started the disturbance would be able to give the behavior and electric characteristic of the liquid. Moreover, we studied about the evaluation of remnant charges.
社団法人電気学会の論文
2009-04-01