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Fundamental Performance Limitations in Utilizing HVDC to Damp Interarea Modes
KTH, School of Electrical Engineering and Computer Science (EECS), Automatic Control.ORCID iD: 0000-0003-0656-7991
KTH, School of Electrical Engineering and Computer Science (EECS), Automatic Control.ORCID iD: 0000-0001-9940-5929
KTH, School of Electrical Engineering and Computer Science (EECS), Electric Power and Energy Systems.ORCID iD: 0000-0002-3107-7073
2019 (English)In: IEEE Transactions on Power Systems, ISSN 0885-8950, E-ISSN 1558-0679, Vol. 34, no 2, p. 1095-1104Article in journal (Refereed) Published
Abstract [en]

This paper considers power oscillation damping (POD) using active power modulation of high-voltage dc transmissions. An analytical study of how the proximity between interarea modal frequencies in two interconnected asynchronous grids puts a fundamental limit to the achievable performance is presented. It is shown that the ratio between the modal frequencies is the sole factor determining the achievable nominal performance. To illustrate the inherent limitations, simulations using a proportional controller tuned to optimize performance in terms of POD are done on a simplified two-machine model. The influence of limited system information and unmodeled dynamics is shown. The analytical result is then further validated on a realistic model with two interconnected 32-bus networks.

Place, publisher, year, edition, pages
IEEE, 2019. Vol. 34, no 2, p. 1095-1104
Keywords [en]
Controllability, frequency control, HVDC transmission control, interarea oscillations, power oscillation damping, small-signal stability
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-245892DOI: 10.1109/TPWRS.2018.2876554ISI: 000459509400024Scopus ID: 2-s2.0-85055035094OAI: oai:DiVA.org:kth-245892DiVA, id: diva2:1295253
Note

QC 20190811

Available from: 2019-03-11 Created: 2019-03-11 Last updated: 2019-03-11Bibliographically approved

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Björk, JoakimHarnefors, Lennart

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