Title :
The effect of degree of cross-linking on accumulation of space charge in cross-linked polyethylene (XLPE)
Author :
Li, Jixiao ; Zhang, Yewen ; Zheng, Feihu ; Peng, Zongren ; Wu, Changshun ; Xia, Zhongfu
Author_Institution :
Pohl Inst. of Solid State Phys., Tongji Univ., Shanghai, China
Abstract :
The accumulation of space charge in cross-linked polyethylene (XLPE) under DC stress was investigated with PWP method and TSD method. The activation energy of different peaks of TSD is obtained with split multi-peak method; the polarization of dipoles and impurities is distinguished. The results show that cross-linking agent is one of the sources of hetero-space charge, and the homo-space charge is associated with cross-linking residues. They have the major effect on the accumulation of space charge in XLPE sample
Keywords :
XLPE insulation; dielectric polarisation; power cable insulation; space charge; thermally stimulated currents; PWP method; TSD method; XLPE; activation energy; cross-linked polyethylene; cross-linking; cross-linking residues; dipole polarization; hetero-space charge; homo-space charge; pressure wave propagation method; space charge accumulation; split multi-peaks method; thermally stimulated discharge methods; Anodes; Cathodes; Circuits; Electrodes; Impurities; Ionization; Polyethylene; Power cables; Space charge; Temperature;
Conference_Titel :
Electrical Insulating Materials, 2001. (ISEIM 2001). Proceedings of 2001 International Symposium on
Conference_Location :
Himeji
Print_ISBN :
4-88686-053-2
DOI :
10.1109/ISEIM.2001.973595
