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Keywords

Tconnection tower, doublecircuit alternate current, electric field intensity, simulation

Abstract

The Tconnected tower has achieved a good application in the engineering practice. However, it increases the complex degree of electric field distribution around the tower body. In order to obtain the electric field distribution under the Ttower and around the typical working position of tower body, a 110kV doublecircuit AC Tconnected tower is studied in this paper. Firstly, a model consisting of a Ttower body and wires is established by using threedimensional finite element software COMSOL Multiphysics. Then, the electric field distribution around Tconnected tower is studied. The electric field distribution around the location 1.5m above the ground and the electric field intensity of typical working position on tower body are analyzed under the situation of inconsistent and consistent phase sequence arrangement respectively. It is shown that the inconsistent phase sequence arrangement of doublecircuit line corresponds to the greatest influence to the electric field distribution under Tconnected tower. The maximum value of the electric field at 1.5m above the ground appears on the side of the Tconnected line. The electric field intensities of the location under Tconnected tower and the typical working position of tower body are within safe ranges. The calculation results provide references for the Tconnection design of transmission line.

DOI

10.19781/j.issn.16739140.2020.05.019

First Page

138

Last Page

143

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