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Verification of forced convective cooling from conductors in breeze wind by wind tunnel testing

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2 Author(s)
Isozaki, M. ; Tokyo Electr. Power Co., Japan ; Iwama, N.

The current carrying capacity of the overhead transmission line greatly influenced by the forced convection cooling from the conductor. The velocity of the wind to determine the current carrying capacity is, less than 1.0 m/s, and it is a breeze area. Because of that, there are a few examinations for forced convective cooling by using the actual conductors from difficulty of handling of the breeze until now. So, we started the investigation about the realities of forced convective cooling from the conductors, using a wind tunnel, which shows good characteristics in the breeze. In the examination, temperature of conductor was measured as a parameter, wind velocity, wind direction, current, and conductor size. A tendency about rise in conductor temperature was grasped, and a new calculation technique could be established as a result. When this new calculation technique is used, it is possible that electric wire temperature is predicted more precisely. Therefore, it can reflect on employing equipment effectively.

Published in:

Transmission and Distribution Conference and Exhibition 2002: Asia Pacific. IEEE/PES  (Volume:3 )

Date of Conference:

6-10 Oct. 2002