This paper presents the effect of the negative sequence current control strategy of an MMC-HVDC system on the single-line-to-ground (SLG) fault response of the high AC transmission lines. Four different methods reported in the literature are compared. The paper shows that the negative sequence current suppression by the MMC-HVDC station demonstrates increased double-frequency power oscillations in the DC link and high over-voltages in the AC terminals during single line to ground faults. On the other side, the adequate control of the negative sequence current during unbalanced faults in the grid improves the observed DC link voltage and power ripples. Furthermore, the negative sequence current injection, increases the zero sequence current amplitude measured at the PCC of the MMC-HVDC station. The later, enhances the fault detection capability of protection schemes in the AC transmission during
SLG to ground faults in the vicinity of the MMC substation.
Original languageEnglish
Title of host publication2016 IEEE PES Innovative Smart Grid Technologies Conference Europe (ISGT-Europe)
EditorsA. Gubina
Place of PublicationDanvers
PublisherIEEE
Pages1-6
Number of pages6
ISBN (Electronic)978-1-5090-3358-4
ISBN (Print)978-1-5090-3359-1
DOIs
Publication statusPublished - Oct 2016
EventIEEE PES Innovative Smart Grid Technologies Conference Europe 2016, ISGT-Europe - Ljubljana, Slovenia
Duration: 9 Oct 201612 Oct 2016
http://sites.ieee.org/isgt-europe-2016/

Conference

ConferenceIEEE PES Innovative Smart Grid Technologies Conference Europe 2016, ISGT-Europe
Abbreviated titleISGT-Europe 2016
CountrySlovenia
CityLjubljana
Period9/10/1612/10/16
Internet address

    Research areas

  • Negative Sequence Current Control, MMC HVDC, Unbalanced Fault response

ID: 5767088