Title :
Electrothermal analysis of overhead power lines
Author :
Papagiannakis, A. ; Chatziathanasiou, V. ; Papagiannopoulos, I. ; DeMey, G. ; Wiecek, B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Aristotle Univ. of Thessaloniki, Thessaloniki, Greece
Abstract :
In this work a complete coupled electrothermal analysis of overhead power lines is presented. The electromagnetic field problem is solved analytically for both the AAC and ACSR cases. The Joule losses thus computed are input to the thermal problem yielding the analytical expression of the thermal impedance. A subsequent novel dynamic thermal analysis of the almost periodic load variations during an extended time period allows the prediction of temperature fluctuations (value and delay) and the prevention of the line expansion and/or overheating.
Keywords :
electromagnetic fields; electromagnetic wave propagation; power overhead lines; thermal analysis; AAC; ACSR; Joule losses; dynamic thermal analysis; electromagnetic field problem; electrothermal analysis; overhead power lines; periodic load variation; temperature fluctuation; thermal impedance; Thermal analysis; Thermal expansion; Welding;
Conference_Titel :
Industrial Technology (ICIT), 2012 IEEE International Conference on
Conference_Location :
Athens
Print_ISBN :
978-1-4673-0340-8
DOI :
10.1109/ICIT.2012.6209984
