Deep trap sites suppressing space charge injection in polycyclic aromatic compounds doped XLPE composite. Issue 1 (12th February 2020)

• Record Type: Journal Article
• Authors: Li, Jin; Han, Chenlei; Du, Boxue; Takada, Tatsuo
• Is Part Of: IET nanodielectrics. Volume 3:Issue 1(2020:Mar.)
• Page Start: 10
• Page End: 13
• Publication Date: 2020-02-12
• Subjects: charge injection -- density functional theory -- XLPE insulation -- space charge; space charge suppression -- deep trap sites -- space charge injection -- space charge characteristics -- deep carrier traps -- polycyclic aromatic compounds -- XLPE composite -- cross‐linked polyethylene composite -- integration current method -- quantum chemical calculation -- space charge behaviours -- energy levels -- 3D potential distributions -- density functional theory -- temperature 80.0 degC -- temperature 25.0 degC; Dielectrics -- Periodicals; Nanoelectronics -- Periodicals; 537.24
• DOI: 10.1049/iet-nde.2019.0035
• Languages: English
• ISSNs: 2514-3255

Abstract

Abstract : In this study, the space charge characteristics in the polycyclic aromatic compounds doped cross‐linked polyethylene (XLPE) composite were analysed by integration current ( Q ( t )) method and quantum chemical calculation. Experimentally, the space charge behaviours of XLPE composites modified by the three selected polycyclic aromatic compounds during polarisation and depolarisation process at 25 and 80°C were measured by Q ( t ) method, respectively. The energy levels and 3D potential distributions of the three polycyclic aromatic compounds were calculated by density functional theory. The experimental and calculation results indicate that the polycyclic aromatic compound C with deep carrier traps and stronger polarity exhibits outstanding ability to reduce space charge injection than the others at both 25 and 80°C. Generally, 4, 4′‐bis (dimethyl amino) benyil has great potential as the organic additive for DC cable insulation from the view of space charge suppression.