DocumentCode
2977395
Title
Cahorabassa-Apollo HVDC link
Author
Moore, R.J.
Author_Institution
Eskom, Johannesburg, South Africa
Volume
2
fYear
1996
fDate
24-27 Sep 1996
Firstpage
699
Abstract
The Cahora-bassa HVDC link consists of two 533 kV lines spaced approximately 1 km apart. If one line is out power can be supplied with one line and earth return. The current being DC will flow through the whole earth, however where it enters or leaves the earth the cross sectional area must reduce before it can pass up the electrode connecting the conductor to earth. The author discusses the design of the earth electrodes and an electronically conducting backfill material which excluded ionic conduction. Laboratory tests on backfill media are discussed as is the testing and installation of the new electrode
Keywords
HVDC power transmission; earth electrodes; electrical conductivity; materials testing; Cahorabassa-Apollo HVDC link; DC current flow; earth electrodes; earth return; electronically conducting backfill material; Conducting materials; Conductivity; Conductors; Current density; Earth; Electrodes; HVDC transmission; Powders; Testing; Water;
fLanguage
English
Publisher
ieee
Conference_Titel
AFRICON, 1996., IEEE AFRICON 4th
Conference_Location
Stellenbosch
Print_ISBN
0-7803-3019-6
Type
conf
DOI
10.1109/AFRCON.1996.562974
Filename
562974
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