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Power systems voltage emergency control approach using trajectory sensitivities

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3 Author(s)
Zima, M. ; Power Syst. Lab., Swiss Fed. Inst. of Technol., Zurich, Switzerland ; Korba, P. ; Andersson, G.

Very stressed power systems often lack ability to withstand certain disturbances, what might result in serious consequences. Therefore, the tools mitigating such a situation have a crucial significance. This paper presents a method for real-time stability assessment and emergency control of power systems based on the trajectory sensitivities. Out of the present conditions a nominal trajectory and its sensitivities is precalculated. If an incipient instability is detected, necessary stabilizing control measures are determined. A short review of trajectory sensitivities is included. A principal description of the method together with a theoretical foundation and examples with simulation results is provided.

Published in:

Control Applications, 2003. CCA 2003. Proceedings of 2003 IEEE Conference on  (Volume:1 )

Date of Conference:

23-25 June 2003