Thermal-Electric Rating Method for Mass-Impregnated Paper-Insulated HVDC Cable Circuits

Author

Huang, Z.Y. ; Pilgrim, J.A. ; Lewin, P.L. ; Swingler, S.G. ; Tzemis, G.

Author_Institution

Tony Davies High Voltage Lab., Univ. of Southampton, Southampton, UK

Volume

30

Issue

1

fYear

2015

fDate

Feb. 2015

Firstpage

437

Lastpage

444

Abstract

Compared to conventional ac cables, the current rating of HVDC cable circuits is more complicated because the permissible current is not only limited by the operating temperature, but also by the electrical stress within the insulation. Therefore the IEC60287 current rating standard is considered insufficient for some HVDC applications because it fails to include the stress limitation. This paper presents an analytical methodology to calculate an electrical stress-limited rating for HVDC cables, which considers the maximum dielectric stress as the current limiting factor. This paper represents the first part of a project which has comprehensively reviewed cable rating calculations for mass impregnated HVDC cable systems.

Keywords

HVDC power transmission; IEC standards; cable insulation; current limiters; paper; stress analysis; IEC60287 current rating standard; cable insulation; cable rating calculation; current limiting factor; electrical stress; electrical stress-limited rating; high voltage direct current; mass-impregnated paper-insulated HVDC cable circuit; maximum dielectric stress; permissible current; thermal-electric rating method; Cable insulation; Conductivity; Conductors; Dielectrics; HVDC transmission; Stress; Electric breakdown; HVDC transmission; power cable insulation; underwater cables;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2014.2359772

Filename

6908003