Time Domain simulation of PD Propagation in XLPE Cables Considering Frequency Dependent Parameters

Author(s): Wei Zhanga, Jian Heb, Lin Tianb, Xuejun Lvb, Hong-Jie Lia*, Chongxin Liua
a Xi’an Jiaotong University, No.28 Xianning West Road, Xi’an, 710049, China
b Linyi Power Supply Ltd.,  No.130 Jinque Hill Road, Linyi, 276000, China
International Journal of Smart Grid and Clean Energy, vol. 2, no. 1, January 2013: pp. 25–31
ISSN: 2315-4462
Digital Object Identifier: 10.12720/sgce.2.1.25-31 

Abstract: Partial discharge (PD) detection and location is of great significance for the power cable insulation condition monitoring, where analysis of the PD propagation is needed. This paper presents the single-core model of cross-linked polyethylene (XLPE) cable considering the influence of skin effect and semi-conducting screens. To analysis the propagation of PD pulse in time domain, the model firstly is rational approximated using vector fitting method. Based on the fitting results, the π section lumped parameters model is then proposed. Examples on two cables with different permittivity approximating forms of semiconducting screens are presented.

Keywords: Semi-conducting screen, state-space model, vector fitting (VF), XLPE cable

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