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Analysis of Cable Overvoltages in Symmetrical Monopolar and Rigid Bipolar HVDC Configuration

Goertz, Max; Wenig, Simon; Beckler, Simon; Hirsching, Carolin; Suriyah, Michael; Leibfried, Thomas

Abstract:
The symmetrical monopolar configuration is the prevailing scheme configuration for high voltage direct current (HVDC) interconnectors utilizing themodular multilevel converter (MMC) topology. However, the rigid bipolar configuration is gaining significance, as first projects are currently in planning stage. The purpose of this paper is to analyse bothHVDCscheme configurations with regard to cable voltage stresses originating from shortcircuit faults. The study focuses on HVDC cables with extruded insulation connected to MMCs equipped with half-bridge (HB) submodules. Basic design aspects in rigid bipolar configuration such as the station grounding concept are discussed. Moreover, various station internal as well as dc faults are examined by means of electromagnetic transient (EMT) simulations. Occurring cable voltage stresses are analyzed with respect to voltage polarity, peak value and wave front-parameters and compared in symmetrical monopolar and rigid bipolar configuration. It is demonstrated that cable overvoltages with same polarity as the dc operating voltage are significantly reduced in schemes operating in rigid bipolar configuration. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000105063/pub
Veröffentlicht am 22.09.2020
Preprint §
DOI: 10.5445/IR/1000105063
Veröffentlicht am 17.01.2020
Originalveröffentlichung
DOI: 10.1109/TPWRD.2019.2960851
Scopus
Zitationen: 1
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Elektroenergiesysteme und Hochspannungstechnik (IEH)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 08.2019
Sprache Englisch
Identifikator ISSN: 0885-8977, 1937-4208
KITopen-ID: 1000105063
HGF-Programm 37.06.01 (POF III, LK 01) Networks and Storage Integration
Erschienen in IEEE transactions on power delivery
Verlag Institute of Electrical and Electronics Engineers (IEEE)
Band 35
Heft 4
Seiten 2097-2107
Schlagwörter Bipolar configuration, extruded dc cable, halfbridge, insulation co-ordination, MMC-HVDC
Nachgewiesen in Scopus
Web of Science
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