By Topic

Analysis on the longitudinal temperature and derating factor of power cables surrounding dissimilar soil materials region

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

5 Author(s)
Jeong, S.H. ; Korea Electrotechnol. Res. Inst., Changwon, South Korea ; Nam, K.Y. ; Choi, S.B. ; Ryo, H.S.
more authors

The permissible current-carrying capability of power cables has been calculated on the basis of installing in the homogeneous materials as the same thermal resistivity. But, in case of installing power cables surrounding dissimilar soil thermal properties, the gradient of temperature will be occurred not only the radial heat flow but also longitudinal heat flow along the power cables. So there are many problems at calculating the permissible current-carrying capability in convenient method. This paper presents the heat model and algorithms of the longitudinal heat flow along power cables to analyze the temperature distribution and the derating factor of the permissible current-carrying capability of power cables. The algorithm is derived from two dimension Fourier's law and energy balance equation using heat conduction equation of heat transfer. The analysis of derating factor of the permissible current-carrying capability of power cables is derived from the algorithm and equation proposed by IEC 60287. The proposed heat model and algorithm are programmed to analyze the hotspot of power cables using the graphical user interface technique. This program is of great use to reasonably calculate the permissible current-carrying capability of power cables and to operate underground power systems in more stable and reliable.

Published in:

Power System Technology, 2004. PowerCon 2004. 2004 International Conference on  (Volume:2 )

Date of Conference:

21-24 Nov. 2004