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Comparison of Current Carrying Capacities and Investment Costs of Directly Buried HVDC Cable and GIL Transmission Systems

Balzer, Constantin ; Hallas, Martin ; Hinrichsen, Volker ; Neumann, Claus ; Koch, Herrmann (2021):
Comparison of Current Carrying Capacities and Investment Costs of Directly Buried HVDC Cable and GIL Transmission Systems. (Publisher's Version)
In: ETG-Fachberichte, 162, In: VDE Hochspannungstechnik : 9. – 11. November 2020, Online-Veranstaltung,
Darmstadt, VDE Verlag, VDE Hochspannungstechnik 2020, Online-Veranstaltung, 09.-11.11.2020, ISSN 0341-3934, ISBN 978-3-8007-5353-6,
DOI: 10.26083/tuprints-00014127,
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Item Type: Conference or Workshop Item
Origin: Secondary publication service
Status: Publisher's Version
Title: Comparison of Current Carrying Capacities and Investment Costs of Directly Buried HVDC Cable and GIL Transmission Systems
Language: English
Abstract:

HVDC underground transmission is of high interest for future grid extension. Generally, directly buried DC cables and DC GIL are possible solutions, and both of them represent new technologies. This paper takes a first step in comparing their current carrying capabilities and investment costs. In order to do so, the ampacity ratings are first calculated for homogenous bedding properties with the help of analytical formulas and a numerical model. This serves as a validation of the model and gives important insights of the differences between the two technologies. In a next step, the ampacity ratings are derived under the influence of realistic constraints, such as the inclusion of drying out of the soil, variations of the backfill material or environmental demands into the calculations. Based on the derived ampacity ratings, the investment costs are assessed, considering a large variation of major cost factors. For two different scenarios, i.e. a transmission capacity of 2.5 GW and 5 GW, the relative project costs are compared.

Title of Book: VDE Hochspannungstechnik : 9. – 11. November 2020, Online-Veranstaltung
Series Name: ETG-Fachberichte
Volume: 162
Place of Publication: Darmstadt
Publisher: VDE Verlag
Collation: 8 ungezählte Seiten
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Electrical Power Systems > High Voltage Technology
Event Title: VDE Hochspannungstechnik 2020
Event Location: Online-Veranstaltung
Event Dates: 09.-11.11.2020
Date Deposited: 17 Dec 2021 13:47
Last Modified: 17 Dec 2021 13:47
DOI: 10.26083/tuprints-00014127
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-141272
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/14127
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