Preprint Article Version 1 This version is not peer-reviewed

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

Version 1 : Received: 1 October 2017 / Approved: 2 October 2017 / Online: 2 October 2017 (13:54:40 CEST)

A peer-reviewed article of this Preprint also exists.

Shekhar, A.; Feng, X.; Gattozzi, A.; Hebner, R.; Wardell, D.; Strank, S.; Rodrigo-Mor, A.; Ramírez-Elizondo, L.; Bauer, P. Impact of DC Voltage Enhancement on Partial Discharges in Medium Voltage Cables—An Empirical Study with Defects at Semicon-Dielectric Interface. Energies 2017, 10, 1968. Shekhar, A.; Feng, X.; Gattozzi, A.; Hebner, R.; Wardell, D.; Strank, S.; Rodrigo-Mor, A.; Ramírez-Elizondo, L.; Bauer, P. Impact of DC Voltage Enhancement on Partial Discharges in Medium Voltage Cables—An Empirical Study with Defects at Semicon-Dielectric Interface. Energies 2017, 10, 1968.

Journal reference: Energies 2017, 10, 1968
DOI: 10.3390/en10121968

Abstract

A scientific consensus is emerging on the benefits of dc distribution in medium voltage 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 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 is explored.

Subject Areas

ac; comparison; dc; discharges; measurements; medium voltage; pd; partial discharges

Readers' Comments and Ratings (0)

Leave a public comment
Send a private comment to the author(s)
Rate this article
Views 0
Downloads 0
Comments 0
Metrics 0
Leave a public comment

×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.