The Temperature Rise Analysis of the Old Conductors

Abstract:

In order to study the conduction performance of the old transmission lines, we carried out a comparative study by testing the heat dissipation of the old and the new overhead conductors (35 kV aluminium cable steel reinforced (ACSR) lines, LGJ70/10). The temperature variation of two distinct types of lines under the identical current flow was investigated in details theoretically and experimentally. Our extensive experiments show that the temperature rise of old lines is higher about 11% than those of new lines with the same current flow of 255 A. By combining the theoretical analysis and experimental observations, it is concluded that the heat radiated power of the old lines is higher about 46% than that of new lines, such high radiated heat power is the main factor affecting the temperature rise of old lines.

• Periodical: Advanced Materials Research (Volumes 805-806)
• Pages: 1058-1061
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.805-806.1058
• Online since: September 2013
• Authors: Yan Zhong Ju*, Xin Ying Wang, Jun Feng Bai, Wen Bin Zhou
• Keywords: ACSR Conductors, Current Carrying Capacity, Influencing Factor, Power Balance Method, Radiation Heat Power, Temperature Rise

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