Impact of DC Voltage Enhancement on Partial Discharges in Medium Voltage Cables—An Empirical Study with Defects at Semicon-Dielectric Interface

Aditya Shekhar, Xianyong Feng, Angelo Gattozzi, Robert Hebner, Douglas Wardell, Shannon Strank, Armando Rodrigo-Mor, Laura Ramírez-Elizondo and Pavol Bauer
Additional contact information
Aditya Shekhar: Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
Xianyong Feng: Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
Angelo Gattozzi: Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
Robert Hebner: Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
Douglas Wardell: Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
Shannon Strank: Center for Electromechanics, The University of Texas at Austin, 10100 Burnet Rd CEM Bldg. 133, Austin, TX 78758, USA
Armando Rodrigo-Mor: Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, Delft 2628 CD, The Netherlands
Laura Ramírez-Elizondo: Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, Delft 2628 CD, The Netherlands
Pavol Bauer: Electrical Sustainable Energy, Delft University of Technology, Mekelweg 4, Delft 2628 CD, The Netherlands

Energies, 2017, vol. 10, issue 12, 1-18

Abstract: A scientific consensus is emerging on the benefits of direct current (DC) distribution in medium voltage (MV) power systems of ships and cities. At least 50% space savings and increased power transfer capacity are estimated with enhanced voltage DC operation of electric cables. The goal of this research is to contribute to developing the empirical knowledge on the insulation performance in order to validate the feasibility of such anticipated gains of DC versus alternating current (AC), and to determine the comparative impact of different operational conditions from a component engineering point of view. The partial discharge (PD) activity in cables is measured under AC and DC conditions as an indicator of insulation performance. Specifically, PDs in defects at the semicon-insulation interface are studied in terms of inception voltage, repetition rate and discharge magnitude. Empirical understanding is drawn for operating voltage and frequency dependence of the discharge behavior in such voids in the range of 10 to 20 kV and 0 to 0.1 Hz, respectively. The change in PD activity with void evolution post temperature-induced ageing process is explored.

Keywords: AC; comparison; DC; discharges; measurements; medium voltage; PD; partial discharges (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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