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Improving power system dynamics by series-connected facts devices
KTH, Superseded Departments, Electrical Systems.ORCID iD: 0000-0002-6431-9104
KTH, Superseded Departments, Electrical Systems.
1997 (English)In: IEEE Transactions on Power Delivery, ISSN 0885-8977, E-ISSN 0885-8877, Vol. 12, no 4, 1635-1640 p.Article in journal (Refereed) Published
Abstract [en]

This paper examines improvement of power system dynamics by use of unified power flow controller (UPFC), thyristor controlled phase shifting transformer (TCPST) and thyristor controlled series capacitor (TCSC). Models suitable for incorporation in dynamic simulation programs for studying angle stability are analysed. A control strategy for damping of electromechanical power oscillations using an energy function method is derived. The achieved control laws are shown to be effective both for damping of large signal and small signal disturbances and are robust with respect to loading condition, fault location and network structure. Furthermore, the control inputs are easily attainable from the locally measurable variables. The effectiveness of the controls are demonstrated for model power systems.

Place, publisher, year, edition, pages
1997. Vol. 12, no 4, 1635-1640 p.
Keyword [en]
Control strategy, Energy function, FACTS, Local variables, Power swing, Series-connected voltage source, TCPST, TCSC, UPFC, Capacitors, Computer simulation, Computer software, Electric losses, Robustness (control systems), Thyristors, Thyristor controlled phase shifting transformers (TCPST), Thyristor controlled series capacitor (TCSC), Unified power flow controller (UPFC), Electric power systems
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
URN: urn:nbn:se:kth:diva-52846DOI: 10.1109/61.634184ISI: A1997XY52600031OAI: diva2:467923
QC 20111220Available from: 2011-12-20 Created: 2011-12-20 Last updated: 2011-12-20Bibliographically approved

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