Electric Field and Potential Distribution in a 420 kV Novel Unibody Composite Cross-Arm

Tohid Jahangiri, Claus Leth Bak, Filipe Miguel Faria da Silva, Brian Endahl

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Abstrakt

The use of uni-body composite cross-arm in a fully composite-based pylon is a new concept for the next generation of overhead transmission lines. The cross-arm is stressed by phase-to-phase voltages except in two regions, which are stressed by phase-to-ground voltages caused by installation of shield wires. Due to a major difference between the novel cross-arm structure and traditional composite cross-arms, the electric field distribution in the uni-body composite cross-arm is of considerable interest. This paper presents and analyses the electric field distribution around and inside the hollow core uni-body cross-arm through which ground cable passes to connect the shield wires. Two different shed profiles are considered on the cross-arm and evaluated based on the guidelines of IEC 60815-3.
The 2D geometry of pylon is modeled in ANSYS Finite Element Analysis package. The electric field and potential distribution along the pylon is graphically depicted and the effectiveness of assigned shed profiles in controlling the power frequency stresses are investigated in the areas with high field intensities.
OriginalsprogEngelsk
TitelProceedings of the 24th Nordic Insulation Symposium on Materials, Components and Diagnostics
Antal sider6
ForlagTechnical University of Denmark (DTU)
Publikationsdatojun. 2015
Sider111-116
StatusUdgivet - jun. 2015
Begivenhed24th Nordic Insulation Symposium on Materials, Components and Diagnostics - Technical University of Denmark, Copenhagen, Danmark
Varighed: 15 jun. 201517 jun. 2015

Konference

Konference24th Nordic Insulation Symposium on Materials, Components and Diagnostics
LokationTechnical University of Denmark
LandDanmark
ByCopenhagen
Periode15/06/201517/06/2015

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  • Citationsformater

    Jahangiri, T., Bak, C. L., Silva, F. M. F. D., & Endahl, B. (2015). Electric Field and Potential Distribution in a 420 kV Novel Unibody Composite Cross-Arm. I Proceedings of the 24th Nordic Insulation Symposium on Materials, Components and Diagnostics (s. 111-116). Technical University of Denmark (DTU).