Modeling and Control of VSC-HVDC Links Connected to Island Systems
2011 (English)In: IEEE Transactions on Power Systems, ISSN 0885-8950, Vol. 26, no 2, 783-793 p.Article in journal (Refereed) Published
The recently proposed power-synchronization control for grid-connected voltage-source converters (VSCs) has been shown to be a feasible solution for high-voltage direct-current (HVDC) transmission connected to high-impedance weak ac systems. In this paper, power-synchronization control is investigated for VSC-HVDC links connected to another type of weak ac system, i.e., low-inertia or island systems. As an example, a linear model of a typical island system feeding by a VSC-HVDC link, including a synchronous generator, an induction motor, and some passive loads, is developed for tuning the control parameters of the VSC-HVDC link. Time simulations in PSCAD/EMTDC demonstrate that VSC-HVDC systems using power-synchronization control are flexible for various network conditions, such as large-ac-system connection, island systems, or passive networks. The time simulations also show that power-synchronization control can seamlessly handle transitions between operation modes, as well as ride through ac-system faults in all network conditions.
Place, publisher, year, edition, pages
2011. Vol. 26, no 2, 783-793 p.
Control, converters, high-voltage direct-current (HVDC), power systems, stability
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-33725DOI: 10.1109/TPWRS.2010.2070085ISI: 000289904200030ScopusID: 2-s2.0-79955528007OAI: oai:DiVA.org:kth-33725DiVA: diva2:417432
QC 201105172011-05-172011-05-162011-05-17Bibliographically approved