The effect of reduced pressure on the bubble effect in the composite cellulose-insulation oil-water nanodrops

被引:1
|
作者
Opielak, Marek [1 ]
Rogalski, Przemyslaw [2 ]
机构
[1] Lublin Univ Technol, Inst Transport Combust Engines & Ecol, Lublin, Poland
[2] Lublin Univ Technol, Dept Elect Devices & High Voltage Technol, Lublin, Poland
关键词
water nanoparticles; cellulose; paper and oil insulation; water nanodrops; bubble effect; power transformers; low pressure; MINERAL-OIL; CONDUCTIVITY; TRANSFORMERS; MOIST;
D O I
10.1117/12.2324860
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 article presents the effect of pressure on the bubble effect in moist paper-oil insulation. In order to investigate the influence of pressure on the bubble effect, a measurement stand was made and experiments were carried out on electrotechnical pressboard with a humidity of 3.5%. It was observed that water boiling in pressboard is already present at a pressure of about 500 hPa for a temperature of 21 degrees C which, taking into account the properties of nanoparticles may be evidence of the presence in pressboard nanodrops of water.
引用
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页数:5
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