Title :
Research on PD Number Estimation in Oil Based on Ultrasonic Array Sensors and Modified CCT
Author :
Xie Qing ; Li Ningyuan ; Huang Huaping ; Li Yanqing ; Lu Fangcheng ; Xiang Xin
Author_Institution :
Dept. of Electr. Eng., North China Electr. Power Univ. Baoding, Baoding, China
Abstract :
A new partial discharge (PD) number estimation method in oil is presented based on ultrasonic array sensors and modified CCT in this paper. Firstly, ultrasonic array sensors are developed which can receive and format the wideband array ultrasonic signal of PD. Secondly, sub-band averaging and CCT are applied to realize PD number estimation in Oil. Lastly, the results of experimental research indicate that the method is effective. When the source numbers are 1, 2, 3 respectively, the estimated probability of success are 90%, 83% and 72%.
Keywords :
oils; partial discharges; sensor arrays; ultrasonic arrays; experimental research; modified CCT; oil PD number estimation method; partial discharge number estimation method; source numbers; sub-band averaging; success probability; ultrasonic array sensors; wideband array ultrasonic signal; Frequency; Narrowband; Partial discharges; Petroleum; Power transformer insulation; Power transformers; Sensor arrays; Sensor systems; Ultra wideband technology; Ultrasonic transducer arrays;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2010 Asia-Pacific
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-4812-8
Electronic_ISBN :
978-1-4244-4813-5
DOI :
10.1109/APPEEC.2010.5448933
