Title :
HVDC Cable Design and Space Charge Accumulation. Part 3: Effect of Temperature Gradient [Feature article]
Author :
Fabiani, D. ; Montanari, G.C. ; Laurent, C. ; Teyssedre, G. ; Morshuis, P.H.F. ; Bodega, R. ; Dissado, L.A.
Author_Institution :
Univ. of Bologna, Bologna
Abstract :
The aim of this article is to investigate the extent of space charge accumulation due to a temperature gradient in comparison with other charge-supply mechanisms, particularly injection from the electrodes. For this purpose, space-charge measurements were carried out on HVDC cable models under application of different temperature gradients across the cable insulation, above and close to the threshold field for space-charge accumulation. The main results, consisting of space-charge patterns and extracted quantities, are discussed here.
Keywords :
HVDC power transmission; power cable insulation; space charge; HVDC cable design; cable insulation; field inversion; space charge accumulation; temperature gradients; Cable insulation; Conductivity; Dielectrics and electrical insulation; Electrodes; HVDC transmission; Power cable insulation; Power cables; Space charge; Temperature dependence; Temperature distribution;
Journal_Title :
Electrical Insulation Magazine, IEEE
DOI :
10.1109/MEI.2008.4473049
