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Increasing wind power generation quantity needs obviously reliable insulation property of power equipment. Since over 70% of the installed turbines utilize wound rotor induction machines (referred to as double-fed induction generators DFIG) , DFIG is deemed to be one of the most critical components of wind power systems and its performance directly influences the stability and reliability of wind...
Moisture equilibrium characteristics of oil-paper insulation systems are important for insulation condition evaluation of oil-filled transformers. This paper presents moisture equilibrium curves of mineral and vegetable oil-paper insulation systems obtained by both direct and indirect methods. A new mathematical model is proposed to determine moisture content in oil-paper insulation systems. Experiments...
This paper presents an experiment system to measure the moisture equilibrium curves of vegetable oil-paper insulation. The moisture equilibrium curves of vegetable oilpaper insulation are plotted by indirect methods. Comparison between the moisture-equilibrium curves of vegetable oil-paper insulation and those of mineral oil-paper insulation is also presented. The experiment and analysis results shows...
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