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Technologies 2017, 5(3), 46; doi:10.3390/technologies5030046

DC Model Cable under Polarity Inversion and Thermal Gradient: Build-Up of Design-Related Space Charge

1
PT. PLN (Persero) Jalan Trunojoyo, Blok M I/135, Jakarta 12160, Indonesia
2
Electrical Engineering Department, Electric Power University, 235 Hoang Quoc Viet, Hanoi 10000, Vietnam
3
Laboratory on Plasma and Conversion of Energy (LAPLACE), Université de Toulouse, CNRS, INPT, UPS, Bat 3R3, 118, route de Narbonne, Toulouse 31062, France
4
School of Electrical Engineering and Informatics, Bandung Institute of Technology, Jalan Ganesha, 10, Bandung 40132, Indonesia
*
Author to whom correspondence should be addressed.
Received: 5 June 2017 / Revised: 13 July 2017 / Accepted: 13 July 2017 / Published: 17 July 2017
(This article belongs to the Section Innovations in Materials Processing)
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Abstract

In the field of energy transport, High-Voltage DC (HVDC) technologies are booming at present due to the more flexible power converter solutions along with needs to bring electrical energy from distributed production areas to consumption sites and to strengthen large-scale energy networks. These developments go with challenges in qualifying insulating materials embedded in those systems and in the design of insulations relying on stress distribution. Our purpose in this communication is to illustrate how far the field distribution in DC insulation systems can be anticipated based on conductivity data gathered as a function of temperature and electric field. Transient currents and conductivity estimates as a function of temperature and field were recorded on miniaturized HVDC power cables with construction of 1.5 mm thick crosslinked polyethylene (XLPE) insulation. Outputs of the conductivity model are compared to measured field distributions using space charge measurements techniques. It is shown that some features of the field distribution on model cables put under thermal gradient can be anticipated based on conductivity data. However, space charge build-up can induce substantial electric field strengthening when materials are not well controlled. View Full-Text
Keywords: space charge; insulation; conductivity; XLPE; HVDC cable; polarity inversion space charge; insulation; conductivity; XLPE; HVDC cable; polarity inversion
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Adi, N.; Vu, T.T.N.; Teyssèdre, G.; Baudoin, F.; Sinisuka, N. DC Model Cable under Polarity Inversion and Thermal Gradient: Build-Up of Design-Related Space Charge. Technologies 2017, 5, 46.

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