DocumentCode :
267689
Title :
Single-sided partial discharge location method based on impedance discontinuities along power cable
Author :
Yan Li ; Wouters, Peter A. A. F. ; Wagenaars, Paul ; van der Wielen, Peter C. J. M. ; Steennis, E. Fred
Author_Institution :
Electr. Energy Syst. Group, Eindhoven Univ. of Technol., Eindhoven, Netherlands
fYear :
2014
fDate :
18-22 Aug. 2014
Firstpage :
1
Lastpage :
6
Abstract :
Time domain reflectometry (TDR) applied to live cables is hampered by the absence of a clear reflection from the far end. Instead, location of partial discharge (PD) can be extracted from small structures in recorded patterns arising from any impedance variation along the signal propagation channel. This paper explores two approaches for a single-sided PD location system. The first method compares similar signal sequences occurring in PD pattern and pattern obtained from an injected signal. The second method exploits the change of impedance at a far end Ring Main Unit (RMU) by introducing ferrite material, whose effect can be switched on and off. Experiment on medium voltage (MV) cable with about 560 m length shows that both methods can locate the PD within 2% uncertainty.
Keywords :
electric impedance; ferrites; partial discharges; power cables; MV cable; PD patter; ferrite material; impedance discontinuity; medium voltage cable; power cable; ring main unit; signal sequences; single-sided PD location system; single-sided partial discharge location method; Correlation; Ferrites; Impedance; Joints; Partial discharges; Power cables; Sensors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Systems Computation Conference (PSCC), 2014
Conference_Location :
Wroclaw
Type :
conf
DOI :
10.1109/PSCC.2014.7038502
Filename :
7038502
Link To Document :
بازگشت