Investigation on Shielding Failure of a Novel 400-kV Double-Circuit Composite Tower

Qian Wang, Tohid Jahangiri, Claus Leth Bak, Filipe Miguel Faria da Silva, Henrik Skouboe

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

3 Citationer (Scopus)

Resumé

In this paper, the lightning shielding performance of a newly-designed 400 kV double-circuit composite tower is investigated. Based on a revised EGM method, traditional shielding failure regions, located at both sides of a traditional tower is no longer a big issue for the fully composite tower, due to its unusual ‘Y’ configuration. Instead, a new unprotected region exists in the tower center. The maximum lightning current that can lead to shielding failure and the shielding failure rate (SFR) of the new tower are calculated. To verify results from the revised EGM method, a scale model test is conducted. Spatial shielding failure probability around the tower is calculated based on ratio of discharge paths recorded in the test. Moreover, based on test results, the maximum shielding failure lightning currents are obtained. Analysis and results derived from the revised EGM method and scale model test have a small deviation, verifying the feasibility of these two methods in the lighting performance evaluation of the fully composite tower. Both methods confirm that the unusual negative shielding angle of —60 in the newly composite pylon provides good lightning shielding performance. The feasibility of the novel composite tower is verified.
OriginalsprogEngelsk
TidsskriftI E E E Transactions on Power Delivery
Vol/bind33
Udgave nummer2
Sider (fra-til)752-760
Antal sider9
ISSN0885-8977
DOI
StatusUdgivet - apr. 2018

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Shielding
Towers
Networks (circuits)
Composite materials
Lightning
Lighting

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@article{4830f8c815d4465ba1e63cfafcbc8b4e,
title = "Investigation on Shielding Failure of a Novel 400-kV Double-Circuit Composite Tower",
abstract = "In this paper, the lightning shielding performance of a newly-designed 400 kV double-circuit composite tower is investigated. Based on a revised EGM method, traditional shielding failure regions, located at both sides of a traditional tower is no longer a big issue for the fully composite tower, due to its unusual ‘Y’ configuration. Instead, a new unprotected region exists in the tower center. The maximum lightning current that can lead to shielding failure and the shielding failure rate (SFR) of the new tower are calculated. To verify results from the revised EGM method, a scale model test is conducted. Spatial shielding failure probability around the tower is calculated based on ratio of discharge paths recorded in the test. Moreover, based on test results, the maximum shielding failure lightning currents are obtained. Analysis and results derived from the revised EGM method and scale model test have a small deviation, verifying the feasibility of these two methods in the lighting performance evaluation of the fully composite tower. Both methods confirm that the unusual negative shielding angle of —60 in the newly composite pylon provides good lightning shielding performance. The feasibility of the novel composite tower is verified.",
keywords = "Fully composite tower, Revised EGM method, Scale model test, Lightning shielding performance",
author = "Qian Wang and Tohid Jahangiri and Bak, {Claus Leth} and Silva, {Filipe Miguel Faria da} and Henrik Skouboe",
year = "2018",
month = "4",
doi = "10.1109/TPWRD.2017.2716383",
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Investigation on Shielding Failure of a Novel 400-kV Double-Circuit Composite Tower. / Wang, Qian; Jahangiri, Tohid; Bak, Claus Leth; Silva, Filipe Miguel Faria da; Skouboe, Henrik.

I: I E E E Transactions on Power Delivery, Bind 33, Nr. 2, 04.2018, s. 752-760.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

TY - JOUR

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AU - Wang, Qian

AU - Jahangiri, Tohid

AU - Bak, Claus Leth

AU - Silva, Filipe Miguel Faria da

AU - Skouboe, Henrik

PY - 2018/4

Y1 - 2018/4

N2 - In this paper, the lightning shielding performance of a newly-designed 400 kV double-circuit composite tower is investigated. Based on a revised EGM method, traditional shielding failure regions, located at both sides of a traditional tower is no longer a big issue for the fully composite tower, due to its unusual ‘Y’ configuration. Instead, a new unprotected region exists in the tower center. The maximum lightning current that can lead to shielding failure and the shielding failure rate (SFR) of the new tower are calculated. To verify results from the revised EGM method, a scale model test is conducted. Spatial shielding failure probability around the tower is calculated based on ratio of discharge paths recorded in the test. Moreover, based on test results, the maximum shielding failure lightning currents are obtained. Analysis and results derived from the revised EGM method and scale model test have a small deviation, verifying the feasibility of these two methods in the lighting performance evaluation of the fully composite tower. Both methods confirm that the unusual negative shielding angle of —60 in the newly composite pylon provides good lightning shielding performance. The feasibility of the novel composite tower is verified.

AB - In this paper, the lightning shielding performance of a newly-designed 400 kV double-circuit composite tower is investigated. Based on a revised EGM method, traditional shielding failure regions, located at both sides of a traditional tower is no longer a big issue for the fully composite tower, due to its unusual ‘Y’ configuration. Instead, a new unprotected region exists in the tower center. The maximum lightning current that can lead to shielding failure and the shielding failure rate (SFR) of the new tower are calculated. To verify results from the revised EGM method, a scale model test is conducted. Spatial shielding failure probability around the tower is calculated based on ratio of discharge paths recorded in the test. Moreover, based on test results, the maximum shielding failure lightning currents are obtained. Analysis and results derived from the revised EGM method and scale model test have a small deviation, verifying the feasibility of these two methods in the lighting performance evaluation of the fully composite tower. Both methods confirm that the unusual negative shielding angle of —60 in the newly composite pylon provides good lightning shielding performance. The feasibility of the novel composite tower is verified.

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JO - I E E E Transactions on Power Delivery

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