The effect of the thermal history on the space charge accumulation in HVDC crosslinked polyethylene cables

Author

Carstensen, P. ; Farkas, A.A. ; Campus, A. ; Nilsson, U.H.

Author_Institution

Corporate Res., ABB AB, Vasteras, Sweden

fYear

2005

fDate

16-19 Oct. 2005

Firstpage

381

Lastpage

388

Abstract

Space charge profiles of polymeric high voltage direct current (HVDC) cables measured by pulsed electro-acoustic (PEA) systems are normally asymmetrical. It is observed that the space charges in cable samples are mainly located in the outer part of the insulation with little or no space charge accumulation at the inner semi-conductive layer. The objective of the present work is to elucidate the underlying mechanisms behind this space charge accumulation process. The performed experiments include space charge measurements using a pulsed electro-acoustic (PEA) system on cables and plaques cross-linked and cooled under different conditions. The results suggest a link between space charge build-up and the microstructure of the insulation.

Keywords

XLPE insulation; charge measurement; power cable insulation; power cable testing; pulsed electroacoustic methods; space charge; HVDC crosslinked polyethylene cable; inner semi-conductive layer; insulation microstructure; plaque; pulsed electro-acoustic system; space charge accumulation; space charge measurement; thermal effect; Cables; Charge measurement; Current measurement; HVDC transmission; History; Polyethylene; Polymers; Pulse measurements; Pulsed electroacoustic methods; Space charge;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2005. CEIDP '05. 2005 Annual Report Conference on

Print_ISBN

0-7803-9257-4

Type

conf

DOI

10.1109/CEIDP.2005.1560701

Filename

1560701