Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Protection requirements for a multi-terminal meshed DC grid
KTH, School of Electrical Engineering (EES), Electric Power Systems. Department of Electrical Engineering, Belgium .
KTH, School of Electrical Engineering (EES), Electric Power Systems.ORCID iD: 0000-0002-6431-9104
Show others and affiliations
2011 (English)In: Cigrè International Symposium THE ELECTRIC POWER SYSTEM OF THE FUTURE Integrating supergrids and microgrids location, 2011Conference paper, Published paper (Refereed)
Abstract [en]

Multi-terminal high voltage direct current (HVDC) or meshed DC grid is considered to be the preferable option for the much anticipated future supergrid for Europe. This supergrid should connect distant generators to increase the introduction of renewable energy sources and to provide an increased security to the pan- European power system. Although many technical limitations remain, the protection system is often regarded as the most critical one. The protection system for a meshed DC system has particular difficulties compared to the traditional AC system because of the DC current that has no zero crossings and the line impedance that does not limit the fault current. As a consequence, the DC currents will rise much faster and interrupting the fault current is significantly more difficult in the meshed DC than it is in an AC meshed system. Furthermore, traditional protection devices such as impedance relays cannot be used. New alternatives must be found, such as considering a joint strategy between the protection devices and the VSC converter controls. In order to provide a reliable supply of electric energy, the protection system of a meshed DC system should have a number of minimum requirements: fast fault detection, selectivity in opening the correct breakers, and redundancy.

This paper discusses the different requirements for the protection of a multi-terminal meshed HVDC system. It will provide a list of boundary conditions for such a protection system, as well as an overview of the current state of the technology and the remaining gaps. Some pointers to potential technologies that may be used in the future grid protection are given. The paper will not focus on hardware developments, but will rather indicate the requirements that these devices (or joint set of devices) must fulfill.

Place, publisher, year, edition, pages
2011.
Keyword [en]
Multi-terminal, Protection system, Selectivity in meshed grids, VSC HVDC
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-52849Scopus ID: 2-s2.0-84877262585OAI: oai:DiVA.org:kth-52849DiVA: diva2:467969
Conference
Cigrè International Symposium THE ELECTRIC POWER SYSTEM OF THE FUTURE Integrating supergrids and microgrids location:Bologna date:13-16 September 2011
Note

QC 20120113

Available from: 2011-12-20 Created: 2011-12-20 Last updated: 2014-09-29Bibliographically approved

Open Access in DiVA

No full text

Scopus

Authority records BETA

Ghandhari, Mehrdad

Search in DiVA

By author/editor
Van Hertem, DirkGhandhari, Mehrdad
By organisation
Electric Power Systems
Other Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar

urn-nbn

Altmetric score

urn-nbn
Total: 4299 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf