Title :
PD detection in XLPE cable joint based on electromagnetic coupling and ultrasonic method
Author :
Wang, Zijian ; Li, Henan ; Li, Yanqing
Author_Institution :
Hebei Provincial Key Lab. of Power Transm. Equip. Security Defense, North China Electr. Power Univ., Baoding, China
Abstract :
Aiming at the partial discharge (PD) characteristics of XLPE cable, a set of PD detection system which bases on wideband current and ultrasonic sensors is developed. The amplitude-frequency characteristics of the wideband current sensor and its influencing factors such as iron core material, permeability, turns of the coil and integrating resistor are analyzed by experiments. According to the propagating characteristics of ultrasonic, an ultrasonic PD detection system is developed and the relationships between sensitivity and the changes of distance and angle are researched. Finally, 4 typical partial discharge models are designed and the PD detection system is utilized to detect them. The sensor signals corresponding to different PD models are analyzed.
Keywords :
XLPE insulation; electromagnetic coupling; partial discharges; power cable insulation; ultrasonic applications; PD detection system; XLPE cable joint; amplitude-frequency characteristics; coil turns; electromagnetic coupling; integrating resistor; iron core material; partial discharge characteristics; permeability; sensitivity; ultrasonic PD detection system; ultrasonic sensors; wideband current sensors; Acoustics; Discharges; Partial discharges; Power cables; Sensitivity; Sensor phenomena and characterization; XLPE cable; electromagnetic coupling; partial discharge; ultrasonic;
Conference_Titel :
Electrical and Control Engineering (ICECE), 2011 International Conference on
Conference_Location :
Yichang
Print_ISBN :
978-1-4244-8162-0
DOI :
10.1109/ICECENG.2011.6057659
