The effect of temperature on space charge accumulated at chemical and physical interfaces of HVDC polymeric insulation systems

被引:5
作者
Delpino, S. [1 ]
Fabiani, D. [1 ]
Montanari, G. C. [1 ]
Bodega, R. [2 ]
Morshuis, P. H. F. [3 ]
机构
[1] Univ Bologna, Dept Elect Engn, LIMAT, Bologna, Italy
[2] Prysmian Cables & Syst, Delft, Netherlands
[3] Delft Univ Technol, Delft, Netherlands
来源
2007 IEEE INTERNATIONAL CONFERENCE ON SOLID DIELECTRICS, VOLS 1 AND 2 | 2007年
关键词
D O I
10.1109/ICSD.2007.4290860
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper analyzes the behaviour of dielectric interfaces on space charge trapping features of electrical insulation systems. In particular, results of space charge measurements performed at different temperatures on chemical and physical interfaces of dual-dielectric minicables are here presented and discussed. Interfacial polarization due to conductivity/permittivity mismatch between different insulations is investigated together with the charge accumulation at the interface due to injection from the electrodes. The presence of interfaces, particularly physical interfaces, seems to give rise to a significant space charge build-up, which, in turn, is able to distort the actual electric field, overstressing the insulation with respect to the design field.
引用
收藏
页码:498 / +
页数:2
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