Gas insulated transmission lines for high power transmission over long distances

Author

Hillers, T. ; Koch, H.

Author_Institution

Siemens AG, Erlangen, Germany

Volume

2

fYear

1998

fDate

3-5 Mar 1998

Firstpage

613

Abstract

The gas-insulated transmission line (GIL) has been optimised for the needs of the 21st Century, where high-power transmission lines are needed and overhead lines are often not suitable. It will be used as a power feeder into huge metropolitan areas because energy resources are usually far away from the load centre. Also, underground power transmission over long distances is economical with GIL if overhead line installations face technical or acceptance difficulties. The technology is based on over 30 years of experience with gas-insulated systems. The GIL exhibits the following differences in comparison with conventional cables: high power ratings (transmission capacity of 3000 MVA and more per system); and suitability for long distances (100 km and more without compensation of reactive power). The aim of the latest Siemens GIL development was to considerably reduce costs and to optimise the laying technique for long lines

Keywords

gaseous insulation; power cable insulation; underground cables; underground transmission systems; N₂; SF₆; Siemens; cable laying technique; gas-insulated power transmission line; long distance power transmission; metropolitan areas; power feeder; power ratings; technology development; underground power transmission; Cables; Energy resources; Gas insulated transmission lines; Power generation economics; Power overhead lines; Power system economics; Power transmission; Power transmission lines; Reactive power; Urban areas;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy Management and Power Delivery, 1998. Proceedings of EMPD '98. 1998 International Conference on

Print_ISBN

0-7803-4495-2

Type

conf

DOI

10.1109/EMPD.1998.702757

Filename

702757