Feasibility Research of Aging Status Assessment of Steam Turbine Generator Insulation by Frequency-Domain Dielectric Spectroscopy

被引:0
|
作者
Yu Xiaofeng [1 ]
Wu Guangning [2 ]
机构
[1] Southwest Jiao Tong Univ, Elect Engn college, Chengdu, Peoples R China
[2] Southwest Jiao Tong Univ, Elect Engn Coll, Chengdu, Peoples R China
来源
2016 IEEE ELECTRICAL INSULATION CONFERENCE (EIC) | 2016年
关键词
frequency domain dielectric spectrum; turbonator; dielectric loss factor; complex dielectric constant; PAPER; OIL;
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
To study the feasibility of applying frequency domain dielectric spectroscopy method to the diagnosis of generator insulation aging state. Dielectric spectrum of motor stator bar sample was measured using frequency domain dielectric spectroscopy method under different aging degree and different temperature. Then the relationship of dielectric loss factor and complex dielectric constant with aging state was researched. The influence of temperature on the frequency domain dielectric characteristic was also analyzed. Results show that dielectric spectrum at low frequencies are sensitive to the aging state of bar sample, which can assess the aging state. Temperature had a great influence on the measured results. Spectrum curves increase with the rising of temperature and moves to higher frequency. The influence of the temperature should be considered.
引用
收藏
页码:639 / 642
页数:4
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