Analytical Calculation of Coupled Magnetothermal Problem in Gas Insulated Transmission Lines
Abstract: Gas insulated
transmission lines (GIL) are a new technology for transmitting power over long
distances. In this paper, an analytical method (AM) is proposed to investigate
the coupled magnetothermal problem in GIL. Kelvin functions are employed to
calculate the skin effect coefficients of the conductor and the enclosure. The
calculated power losses are used as heat source input for the thermal analysis.
Considering the convective and radiation heat transfer effects, the heat
balance equations on the surface of the conductor and the enclosure are
established, respectively. Temperature rise of the GIL at different operation
conditions are investigated. The proposed method is validated against the finite
element method (FEM). The simplicity of the approach makes it attractive for
self-made software implementation in the thermal design and the condition
monitoring of GIL.
Author: Guoxia Sun, Xiangchao
Jin, Zhiyang Xie
Journal Code: jptkomputergg130095
