Title :
Evaluation of internal electric field of PE/EVA composite systems by TSC-separation methods
Author_Institution :
Electr. Power Res. Inst., Minist. of Energy, Beijing
fDate :
8/1/1990 12:00:00 AM
Abstract :
For the purpose of internal field evaluation of an insulating composite, the Maxwell-Wagner model is usually applied. However, it is constrained by the possibility of ignoring the influence of interfaces. In order to evaluate internal field under any conditions, the thermally stimulated current (TSC) separation method was developed. This method is useful for analysis of a composite if it is dipolar. Details are provided of the TSC separation method and the experimental results on polyethylene and an ethylene-vinyl acetate copolymer composite. It proved that this method is not only useful for internal field analysis but could also be used to identify the space charge location inside the composite
Keywords :
composite insulating materials; organic insulating materials; polymer blends; thermally stimulated currents; Maxwell-Wagner model; TSC-separation methods; copolymer; dipolar; ethylene-vinyl acetate; insulating composite; internal electric field; internal field evaluation; polyethylene; space charge location; thermally stimulated current; Current measurement; Dielectrics and electrical insulation; Electric breakdown; Electric variables measurement; Electrodes; Interconnected systems; Polyethylene; Power system modeling; Shafts; Temperature;
Journal_Title :
Electrical Insulation, IEEE Transactions on
