Title :
The Design of a Sensor for Monitoring Partial Discharge within a Joint of Power Cable
Author :
Gang Wei ; Yusheng Deng ; Ju Tang
Author_Institution :
State Key Lab. of Transm. & Distrib. Equip. & Power Syst. Safety & New Technol., Chongqing Univ., Chongqing, China
Abstract :
A wideband capacitive sensor has been designed, aimed at the structural characteristics of cross-linked polyethylene power cable and defects within the insulation. An analytical model has been established based on the capacitance and the antenna coupling. All the elements which have an influence on the property of sensor are analyzed, and the structure and the parameter of sensor are optimized, through a derivation of transfer function, a calculation of impedance characteristics and an analysis of the response of square wave. Partial discharge signals produced by various defects of insulation are measured and analysis in the lab.
Keywords :
electric impedance; electric sensing devices; partial discharge measurement; polyethylene insulation; power cables; antenna coupling; capacitance; cross-linked polyethylene power cable; impedance characteristics; insulation; partial discharge monitoring; partial discharge signals; sensor design; sensor parameter; structural characteristics; transfer function; wideband capacitive sensor; Cable insulation; Couplings; Discharges (electric); Electrodes; Integrated circuit modeling; Partial discharges; Power cables;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0545-8
DOI :
10.1109/APPEEC.2012.6307317
