Study of Partial Discharge Ultrasonic Wave Propagation in Generator Stator

2012 ◽  
Vol 157-158 ◽  
pp. 53-57
Author(s):  
Yong Ming Yang ◽  
Xu Duan ◽  
Fan Jiang
Keyword(s):  
Wave Propagation ◽  
Ultrasonic Wave ◽  
Field Experiments ◽  
Estimation Error ◽  
Partial Discharge ◽  
Distribution Method ◽  
Ultrasonic Wave Propagation ◽  
Specific Discharge ◽  
On Line ◽  
Generator Stator

Currently specific discharge point cannot be effectively located using common electrometric methods of generator stator winding partial discharge online monitoring. To solve the problem an electrical-sound joint detection method has been proposed. Since accuracy of location would be heavily affected by time delay of ultrasonic wave propagation, background noise and spectrum of partial discharge ultrasonic signal were analyzed first, and ultrasound field distribution and ultrasonic wave propagation were also stimulated. Moreover, an ultrasonic sensors distribution method was proposed to reduce the delay estimation error. The method was verified by field experiments. Experimental results showed that the theoretical analysis was exact and the sensor distribution method was feasible, thus laying foundation for further realizing large generator partial discharge Ultrasonic wave on line monitoring and location.

Simulation of Ultrasonic Wave Propagation of Partial Discharge in Converter Transformer

2021 ◽  
Author(s):  
Xiaochang Hua ◽  
Haibao Mu ◽  
Yiming Zheng ◽  
Jiangyang Zhan ◽  
Xianjun Shao ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Ultrasonic Wave ◽  
Partial Discharge ◽  
Ultrasonic Wave Propagation

Simulation study of axial ultrasonic wave propagation in heterogeneous bovine cortical bone

2016 ◽  
Vol 140 (5) ◽  
pp. 3710-3717 ◽  
Author(s):  
Toshiho Hata ◽  
Yoshiki Nagatani ◽  
Koki Takano ◽  
Mami Matsukawa
Keyword(s):  
Wave Propagation ◽  
Cortical Bone ◽  
Ultrasonic Wave ◽  
Simulation Study ◽  
Ultrasonic Wave Propagation
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