DOI: 10.1051/jp3:1993185
J. Phys. III France 3 (1993) 1093-1100

Effect of hydrostatic pressure on the space charge distribution in power cable materials

B. Garros¹ and J. Santana<sup>2

1</sup>  Laboratoire de Génie Electrique (CNRS-UA 304), Université Paul Sabatier, 118 route de Narbonne, 31062 Toulouse Cedex, France
²  Laboratoire d'électronique, Université des Sciences et Techniques du Languedoc, Place Eugène Bataillon, 34095 Montpellier, France

(Received 1 June 1992, revised 19 February 1993, accepted 23 March 1993)

Abstract
The performance of high-voltage cables with synthetic insulation is highly dependent on the appearance of a space charge under AC or DC stress. The presence of this charge plays a very important role in aging and polymer breakdown phenomena. For submarine power cables, the pressure P for the immersion depth of the cables is now considered. We then study the effect this has on the space charge distribution, as a function of the amplitude of the stressed applied, DC voltage, temperature and hydrostatic pressure. Preliminary results obtained with cross-linked polyethylene are given.

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