Evaluation of internal electric field by separation method

Author

Guoxiong, Cai

Author_Institution

Electr. Power Res. Inst., Beijing, China

fYear

1988

fDate

12-16 Sep 1988

Firstpage

511

Abstract

The author describes the separation method for evaluating the internal field of insulating composites under any conditions. This method is shown to be useful for analyzing a composite if it contains a dipole. Using this method, experiments were performed on PE (polyethylene) and EVA (ethylene-vinyl acetate copolymer) composite. At 253 K the ratio of internal field of PE to EVA in the EVA-PE composite was estimated at about two for about EVA(+)-PE(-) and EVA(-)-PE(+). At 343 K, it was estimated at about three for EVA(-)-PE(+) and higher for EVA(+)-PE(-). It is demonstrated that this method is not only useful for internal field analysis but also makes it possible to identify the space-charge location inside the composite

Keywords

composite insulating materials; electric fields; organic insulating materials; 253 K; 343 K; dipole; ethylene-vinyl acetate copolymer; insulating composites; internal electric field; internal field; polyethylene; separation method; space-charge location; Capacitance; Composite materials; Dielectrics and electrical insulation; Electric breakdown; Electric variables measurement; Electrodes; Laminates; Shafts; Temperature dependence; Water resources;

fLanguage

English

Publisher

ieee

Conference_Titel

Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of

Conference_Location

Beijing

Type

conf

DOI

10.1109/ICPADM.1988.38445

Filename

38445