Transmission Line Model Considering Nonuniform Temperature Distribution at Different Locations

Abstract

Abstract-The temperature variation throughout overhead transmission lines has an important effect on the line operation. In order to describe the actual operation of transmission lines more accurately, this paper proposes a line segmentation method based on temperature distribution at different locations. Taking the actual transmission line of Shaanxi Province as a test case, the influence of the different temperature calculation methods on the maximum transmission power of lines is studied under the lumped parameter model and the distributed parameter model, respectively. It is shown that the transmission line model considering nonuniform temperature distribution at different locations is more accurate for studying the operating state of the system.