Title :
Study on Relationship between Thermal Conductivity and Core Temperature of Power Cable
Author :
Li Ying hong ; Ding Shu chun ; Liu Gang ; Lei Chenghua
Author_Institution :
Sch. of Electr. Power, South China Univ. of Technol., Guangzhou, China
Abstract :
In this paper, the mathematical relationship between thermal conductivity and core temperature is theoretically given by studying the equivalent thermal circuit of 110kV power cable. It shows that core temperature is sensitive to change of the air gap´s thermal conductivity. Finally the effects on core temperature of cable by the thermal conductivity of air gap layer is verified by the finite element cable model. Furthermore, harms and mechanism of cable wetting are deeply analyzed.
Keywords :
air gaps; equivalent circuits; finite element analysis; power cables; thermal conductivity; air gap layer; cable wetting; core temperature; equivalent thermal circuit; finite element cable model; power cable; thermal conductivity; voltage 110 kV; Cable insulation; Cable shielding; Conductivity; Optical fiber cables; Power cables; Temperature sensors; Thermal conductivity;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2011 Asia-Pacific
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-6253-7
DOI :
10.1109/APPEEC.2011.5748999
