Title :
Sheath voltage calculations in long medium voltage power cables
Author :
Gouramanis, Kostas V. ; Kaloudas, C.G. ; Papadopoulos, Theofilos A. ; Papagiannis, Grigoris K. ; Stasinos, Konstantinos
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece
Abstract :
This paper investigates the operation of single core underground medium voltage cables connected in parallel. The examination is based on an existing power cable arrangement connecting a 38 MW wind farm with the transmission grid. The cable arrangement consists of nine single core cables connected in parallel to form a triple 3-phase system. Several connection scenarios such as the earthing of the cable sheaths at one or both ends and the application of sheath cross-bondings are examined. Various simulation parameters are also investigated such as the grounding resistance of the cable sheaths and the number of the cable sheath transpositions. The respective voltages and currents induced on the cable sheaths are calculated under steady-state and short circuit conditions.
Keywords :
cable sheathing; earthing; fault diagnosis; power cables; power grids; underground cables; wind power plants; cable sheath transpositions; earthing; grounding resistance; power 38 MW; power cable arrangement; sheath cross-bondings; sheath voltage calculations; short circuit conditions; single core underground medium voltage cables; steady-state conditions; transmission grid; triple 3-phase system; wind farm; Cable insulation; Cable shielding; Grounding; Integrated circuit modeling; Power cables; Steady-state; Wind farms; ATP/EMTP; cross-bonding; sheath currents; underground power cables;
Conference_Titel :
PowerTech, 2011 IEEE Trondheim
Conference_Location :
Trondheim
Print_ISBN :
978-1-4244-8419-5
Electronic_ISBN :
978-1-4244-8417-1
DOI :
10.1109/PTC.2011.6019234
