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On the Centralized Nonlinear Control of HVDC Systems Using Lyapunov Theory
KTH, School of Electrical Engineering (EES), Electric Power Systems.ORCID iD: 0000-0002-2356-4795
2013 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 1937-4208, Vol. 28, no 2, 1156-1163 p.Article in journal (Refereed) Published
Abstract [en]

The security region of a power system is an important and timely issue; different stability criteria may be limiting. Rotor-angle stability can be improved by modulating active power of installed high-voltage direct current (HVDC) links. This paper proposes a new centralized nonlinear control strategy for coordinating several point-to-point and multiterminal HVDC systems based on Lyapunov theory. The proposed control Lyapunov function is negative semi-definite along the trajectories and uses the internal node representation of the system. The proposed control Lyapunov function increases the domain of attraction and, thus, improves the rotor-angle stability. Nonlinear simulations are performed on the IEEE 10-machine 39-bus system which shows the effectiveness of the controller. In comparison, simulations using the conventional lead-lag controller are also run.

Place, publisher, year, edition, pages
2013. Vol. 28, no 2, 1156-1163 p.
Keyword [en]
Control Lyapunov function, coordinated control, energy function, high-voltage direct current (HVDC), multiterminal dc (MTDC), rotor-angle stability
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-124996DOI: 10.1109/TPWRD.2013.2240021ISI: 000320943800068Scopus ID: 2-s2.0-84875683017OAI: oai:DiVA.org:kth-124996DiVA: diva2:639081
Note

QC 20130806

Available from: 2013-08-06 Created: 2013-08-02 Last updated: 2017-12-06Bibliographically approved

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  • de-DE
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  • nn-NB
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