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Dynamical decentralized voltage control of multi-terminal HVDC grids
KTH, Skolan för elektro- och systemteknik (EES), Reglerteknik. KTH, Skolan för elektro- och systemteknik (EES), Centra, ACCESS Linnaeus Centre.
2017 (engelsk)Inngår i: 2016 European Control Conference, ECC 2016, Institute of Electrical and Electronics Engineers (IEEE), 2017, s. 1519-1524, artikkel-id 7810505Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

High-voltage direct current (HVDC) is a commonly used technology for long-distance electric power transmission, mainly due to its low resistive losses. When connecting multiple HVDC lines into a multi-terminal HVDC (MTDC) system, several challenges arise. To ensure safe and efficient operation of MTDC systems, the voltage of all terminals need to be steered to within an operational range. In this paper we study the commonly used decentralized voltage droop controller, and show that it in general does not steer the voltages to within the operational range. We propose a decentralized PI controller with deadband, and show that it always steers the voltages to within the operational range regardless of the loads. Additionally we show that the proposed controller inherits the property of proportional power sharing from the droop controller, provided that both the loads and the line resistances are sufficiently low. The results are validated through simulation in Matlab.

sted, utgiver, år, opplag, sider
Institute of Electrical and Electronics Engineers (IEEE), 2017. s. 1519-1524, artikkel-id 7810505
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-208465DOI: 10.1109/ECC.2016.7810505ISI: 000392695300252Scopus ID: 2-s2.0-85014997927ISBN: 9781509025916 (tryckt)OAI: oai:DiVA.org:kth-208465DiVA, id: diva2:1107159
Konferanse
2016 European Control Conference, ECC 2016, Aalborg, Denmark, 29 June 2016 through 1 July 2016
Forskningsfinansiär
Swedish Research CouncilKnut and Alice Wallenberg Foundation
Merknad

QC 20170609

Tilgjengelig fra: 2017-06-09 Laget: 2017-06-09 Sist oppdatert: 2017-08-08bibliografisk kontrollert

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