Power systems voltage emergency control approach using trajectory sensitivities

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.

[1]  Ian A. Hiskens,et al.  Trajectory Sensitivity Analysis of Hybrid Systems , 2000 .

[2]  M. Akke,et al.  Analysis of the Nordel power grid disturbance of January 1, 1997 using trajectory sensitivities , 1999 .

[3]  I. Hiskens,et al.  Power system applications of trajectory sensitivities , 2002, 2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309).

[4]  Alberto Bemporad,et al.  Control of systems integrating logic, dynamics, and constraints , 1999, Autom..

[5]  Christian Rehtanz,et al.  Wide area measurement and protection system for emergency voltage stability control , 2002, 2002 IEEE Power Engineering Society Winter Meeting. Conference Proceedings (Cat. No.02CH37309).