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Open AccessReview

Voltage Correction Factors for Air-Insulated Transmission Lines Operating in High-Altitude Regions to Limit Corona Activity: A Review

1
Electrical Engineering Department, Universitat Politècnica de Catalunya, 08220 Terrassa, Spain
2
Evergreen High Voltage NY, PO Box 1758, Bolton Landing, NY 12814, USA
3
Siemens AG, Energy Management Division, Freyeslebenstr. 1, 91058 Erlangen, Germany
*
Author to whom correspondence should be addressed.
Energies 2018, 11(7), 1908; https://doi.org/10.3390/en11071908
Received: 30 June 2018 / Revised: 17 July 2018 / Accepted: 19 July 2018 / Published: 21 July 2018
(This article belongs to the Special Issue 10 Years Energies - Horizon 2028)
Nowadays there are several transmission lines projected to be operating in high-altitude regions. It is well known that the installation altitude has an impact on the dielectric behavior of air-insulated systems. As a result, atmospheric and voltage correction factors must be applied in air-insulated transmission systems operating in high-altitude conditions. This paper performs an exhaustive literature review, including state-of-the-art research papers and International Standards of the available correction factors to limit corona activity and ensure proper performance when planning air-insulated transmission lines intended for high-altitude areas. It has been found that there are substantial differences among the various correction methods, differences that are more evident at higher altitudes. Most high-voltage standards were not conceived to test samples to be installed in high-altitude regions and, therefore, most high-voltage laboratories are not ready to face this issue, since more detailed information is required. It is proposed to conduct more research on this topic so that the atmospheric corrections and altitude correction factors found in the current International Standards can be updated and/or modified so that high-voltage components to be installed in high-altitude regions can be tested with more accuracy, taking into account their insulation structure. View Full-Text
Keywords: high-voltage techniques; corona; critical disruptive voltage; high-altitude; correction factors high-voltage techniques; corona; critical disruptive voltage; high-altitude; correction factors
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Riba, J.-R.; Larzelere, W.; Rickmann, J. Voltage Correction Factors for Air-Insulated Transmission Lines Operating in High-Altitude Regions to Limit Corona Activity: A Review. Energies 2018, 11, 1908.

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