Transformer Mineral Oil Electrification

被引：0
|
作者：
Vihacencu, Mirela [1 ]
Dumitran, Laurentiu Marius [1 ]
Notingher, Petru V. [1 ]
机构：
[1] Univ Politehn Bucuresti, Bucharest 060042, Romania
来源：
2011 7TH INTERNATIONAL SYMPOSIUM ON ADVANCED TOPICS IN ELECTRICAL ENGINEERING (ATEE) | 2011年
关键词：
SPINNING DISK SYSTEM; STATIC ELECTRIFICATION; FLOW ELECTRIFICATION; POWER TRANSFORMERS; INSULATION; LIQUIDS; MODEL;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The static electrification phenomenon is a result of the mineral oil flow through the solid insulating components and cooling ducts. The contact of streaming high resistivity mineral oil with the solid surface of the paper insulation generates electrical charge accumulation, which can produce electrical discharge that affects the insulation system properties. Many experimental results indicate that the static electrification phenomenon depends on the system's dynamic and also on the physicochemical characteristics of dielectric materials. This paper presents a study concerning the electrification phenomenon in a system consisting of a mineral oil metallic cylindrical cell and a pressboard disk that rotates inside the oil. The current generated by the charge concentration gradient, at the pressboard-oil interface is measured for different pressboard disk diameters and several rotation speeds. The influence of the oil thermal aging on the currents is also investigated.
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页数：6
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