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Numerical modelling on partial discharge in HVDC XLPE cable

Miao He (Beijing T&D Power Research Co., Ltd, Beijing, China and Faculty of Physical Sciences and Engineering, School of Electronics and Computer Science, University of Southampton, Southampton, UK)
Miao Hao (Faculty of Physical Sciences and Engineering, School of Electronics and Computer Science, University of Southampton, Southampton, UK)
George Chen (Faculty of Physical Sciences and Engineering, School of Electronics and Computer Science, University of Southampton, Southampton, UK)
Xin Chen (Global Energy Interconnection Research Institute, Beijing, China)
Wenpeng Li (State Key Laboratory of Electrical Insulation and Power Equipment, Xi’an Jiaotong University, Xi’an, China and Global Energy Interconnection Research Institute, Beijing, China)
Chong Zhang (School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, China and Global Energy Interconnection Research Institute, Beijing, China)
Haitian Wang (Global Energy Interconnection Research Institute, Berlin, Germany)
Mingyu Zhou (Global Energy Interconnection Research Institute, Berlin, Germany)
Xianzhang Lei (Global Energy Interconnection Research Institute, Berlin, Germany)

COMPEL - The international journal for computation and mathematics in electrical and electronic engineering

ISSN: 0332-1649

Article publication date: 5 March 2018

325

Abstract

Purpose

High voltage direct current (HVDC) cable is an important part in the electric power transmission and distribution systems. However, very little research has been carried out on partial discharge under direct current (DC) conditions. Niemeyer’s model has been widely used under alternating current (AC) conditions. This paper aims to intend to modify the Niemeyer’s model considering both electric field and charge dynamics under DC conditions, and therefore proposes a numerical model describing partial discharge characteristics in HVDC cable.

Design/methodology/approach

This paper intends to understand partial discharge characteristics under DC conditions through numerical modelling. Niemeyer’s model that has been widely used under AC conditions has been modified, taking both electric field and charge dynamics under DC conditions into consideration. The effects of loading level or current through the conductor, cavity location and material properties on partial discharges have also been studied.

Findings

Electrical conductivity is important in determining the characteristics of partial discharge under DC conditions and discharges tend to happen in short when the cavity field exceeds the inception level under the parameter values studied in the paper.

Research limitations/implications

Building the numerical model is the purpose of the paper, and there is lack in experiment and the comparison between the simulation results and experiment.

Practical implications

The proposed model provides the numerical model describing partial discharge in HVDC cable and helps understand the partial discharge mechanism under DC voltage.

Originality/value

To the best of the author’s knowledge, this paper is a very early research on the numerical modelling work on partial discharge under DC voltage.

Keywords

Acknowledgements

The authors are grateful for the financial support from the State Grid Cooperation of China: Science and Technology Project of SGCC(SGRIZLJS[2014]888).

Citation

He, M., Hao, M., Chen, G., Chen, X., Li, W., Zhang, C., Wang, H., Zhou, M. and Lei, X. (2018), "Numerical modelling on partial discharge in HVDC XLPE cable", COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, Vol. 37 No. 2, pp. 986-999. https://doi.org/10.1108/COMPEL-07-2017-0297

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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