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

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

AAU Energy

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

Abstract

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.

Original language	English
Title of host publication	Proceedings of the 24th Nordic Insulation Symposium on Materials, Components and Diagnostics
Number of pages	6
Publisher	Technical University of Denmark (DTU)
Publication date	Jun 2015
Pages	111-116
Publication status	Published - Jun 2015
Event	24th Nordic Insulation Symposium on Materials, Components and Diagnostics - Technical University of Denmark, Copenhagen, Denmark Duration: 15 Jun 2015 → 17 Jun 2015

Conference

Conference	24th Nordic Insulation Symposium on Materials, Components and Diagnostics
Location	Technical University of Denmark
Country/Territory	Denmark
City	Copenhagen
Period	15/06/2015 → 17/06/2015

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@inproceedings{4fbe8b63e8e547a0ade0c48c12d63cbf,

title = "Electric Field and Potential Distribution in a 420 kV Novel Unibody Composite Cross-Arm",

abstract = "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.",

author = "Tohid Jahangiri and Bak, {Claus Leth} and Silva, {Filipe Miguel Faria da} and Brian Endahl",

year = "2015",

month = jun,

language = "English",

pages = "111--116",

booktitle = "Proceedings of the 24th Nordic Insulation Symposium on Materials, Components and Diagnostics",

publisher = "Technical University of Denmark (DTU)",

note = "24th Nordic Insulation Symposium on Materials, Components and Diagnostics , NORDIS-15 ; Conference date: 15-06-2015 Through 17-06-2015",

}

Jahangiri, T, Bak, CL , Silva, FMFD & Endahl, B 2015, Electric Field and Potential Distribution in a 420 kV Novel Unibody Composite Cross-Arm. in Proceedings of the 24th Nordic Insulation Symposium on Materials, Components and Diagnostics . Technical University of Denmark (DTU), pp. 111-116, 24th Nordic Insulation Symposium on Materials, Components and Diagnostics , Copenhagen, Denmark, 15/06/2015.

Electric Field and Potential Distribution in a 420 kV Novel Unibody Composite Cross-Arm. / Jahangiri, Tohid; Bak, Claus Leth ; Silva, Filipe Miguel Faria da et al.
Proceedings of the 24th Nordic Insulation Symposium on Materials, Components and Diagnostics . Technical University of Denmark (DTU), 2015. p. 111-116.

Research output: Contribution to book/anthology/report/conference proceeding › Article in proceeding › Research › peer-review

TY - GEN

T1 - Electric Field and Potential Distribution in a 420 kV Novel Unibody Composite Cross-Arm

AU - Jahangiri, Tohid

AU - Bak, Claus Leth

AU - Silva, Filipe Miguel Faria da

AU - Endahl, Brian

PY - 2015/6

Y1 - 2015/6

N2 - 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.

AB - 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.

M3 - Article in proceeding

SP - 111

EP - 116

BT - Proceedings of the 24th Nordic Insulation Symposium on Materials, Components and Diagnostics

PB - Technical University of Denmark (DTU)

T2 - 24th Nordic Insulation Symposium on Materials, Components and Diagnostics

Y2 - 15 June 2015 through 17 June 2015

ER -

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

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