Title :
Derating factor for cable crossings with consideration of longitudinal heat flow in cable screen
Author :
Anders, George J. ; Dorison, Eric
Author_Institution :
Kinectrics Inc., Toronto, Ont., Canada
fDate :
7/1/2004 12:00:00 AM
Abstract :
In this paper, an extension of the previously published method for the calculation of the derating factors for cables crossing external heat sources is proposed. The extension takes into account the longitudinal heat flow in cable metallic screen. The proposed algorithm is illustrated in a numerical example considering a practical situation of a high voltage cable crossing a steam pipe.
Keywords :
electric conduits; heat transfer; power cables; ampacity derating; cable crossing derating factor; cable metallic screen; external heat sources; high voltage cable; longitudinal heat flow; power cables screen; steam pipe; Cable shielding; Circuits; Conductors; Dielectric losses; Power cables; Soil; Temperature; Thermal conductivity; Thermal resistance; Voltage; Ampacity derating; cable crossings; power cables;
Journal_Title :
Power Delivery, IEEE Transactions on
DOI :
10.1109/TPWRD.2003.822961
