A study on the space charge formation in XLPE

Author

Sekii, Yasuo ; Ohbayashi, Takashi ; Uchimura, Takahiro ; Hukuyama, Tatsuya ; Maeno, Takashi

Author_Institution

Chiba Inst. of Technol., Japan

fYear

2001

fDate

2001

Firstpage

469

Lastpage

472

Abstract

Space-charge formation in crosslinked polyethylene (XLPE) was examined using the charge profiles of XLPE specimens crosslinked at different temperatures. Negative charges were detected in the vicinity of the positive electrode of specimens cross-linked at temperatures exceeding 180°C. After the crosslinking byproducts were removed, the heterocharge disappeared and remained undetected even after the specimens were soaked in acetophenone. Charge profiles were also obtained for XLPE specimens containing an antistatic agent, which has the function of absorbing moisture. The heterocharge was detected clearly in these specimens, and although the heterocharge disappeared after the decomposition products were removed, the heterocharge was detected again when the specimen was soaked in acetophenone. It is concluded that the small amount of moisture in XLPE is responsible for heterocharge creation

Keywords

XLPE insulation; insulation testing; moisture; space charge; 180 to 220 degC; XLPE; acetophenone; antistatic agent; byproducts; charge profiles; decomposition products; moisture; negative charges; positive electrode; space charge formation; Charge measurement; Circuits; Current measurement; Dielectric materials; Electrodes; Moisture; Pollution measurement; Slabs; Space charge; Temperature;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 2001 Annual Report. Conference on

Conference_Location

Kitchener, Ont.

Print_ISBN

0-7803-7053-8

Type

conf

DOI

10.1109/CEIDP.2001.963583

Filename

963583