On the Centralized Nonlinear Control of HVDC Systems Using Lyapunov Theory
2013 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 0885-8877, Vol. 28, no 2, 1156-1163 p.Article in journal (Refereed) Published
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.
Control Lyapunov function, coordinated control, energy function, high-voltage direct current (HVDC), multiterminal dc (MTDC), rotor-angle stability
Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-124996DOI: 10.1109/TPWRD.2013.2240021ISI: 000320943800068ScopusID: 2-s2.0-84875683017OAI: oai:DiVA.org:kth-124996DiVA: diva2:639081
QC 201308062013-08-062013-08-022013-08-06Bibliographically approved