NDLI: Electric field distribution in transformer oil containing an additive using the Kerr-effect technique under various DC stress conditions

Content Provider	IEEE Xplore Digital Library
Author	Sato, H. Nonaka, Y. Takada, T.
Copyright Year	1990
Description	Author affiliation: Dept. of Electr. & Electron. Eng., Musashi Inst. of Technol., Tokyo, Japan (Sato, H.; Nonaka, Y.; Takada, T.)
Abstract	The electric field distribution profile in transformer insulating oil as a function of time after application of DC step voltage and change of the DC voltage polarity was measured using a highly sensitive advanced Kerr electrooptic technique. The lower limit of the applied electric field intensity was 100 V/cm in insulating oil with an electrode length of 8 cm. Charge distribution as a function of time was calculated from the measured electric field distribution. Mobilities of positive and negative ionic carriers, 0.025 and 0.030 cm/sup 2//Vs, respectively, were determined from the relationship between the saturation time of charge density and applied DC voltage. The relaxation time of accumulated charge near the electrodes after short-circuiting the electrodes was independent of the preapplied DC voltage.<>
Starting Page	474
Ending Page	478
File Size	188054
Page Count	5
File Format	PDF
DOI	10.1109/ICDL.1990.202947
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1990-09-10
Publisher Place	France
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Oil insulation Power transformer insulation Electrodes Dielectrics and electrical insulation Petroleum Electric variables measurement Time measurement Circuit faults Voltage measurement Current measurement
Content Type	Text
Resource Type	Article

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