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An Adaptive Model Predictive Approach to Power Oscillation Damping Utilizing Variable Series Reactance Facts Devices

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3 Author(s)
Nicklas P. Johansson ; Royal Institute of Technology, Sweden ; Hans-Peter Nee ; Lennart Angquist

This paper describes an adaptive method of controlling FACTS devices for power oscillation damping. The method is based on step-wise series reactance modulation. Here, a reduced model of the power system with only two rotating masses is used as a basis for the control design. The model parameters are updated using local measurements of the active power on the controlled line. An adaptive closed loop controller is developed based on the principle that it is possible to stabilize an oscillation in a power system which is characterized by one major mode of oscillation by switching a reactance in series with one transmission line in a small number of steps. The reduced model parameters are recomputed when new information of the system response is known making the control scheme an adaptive one. The paper also includes the derivation of a damping controller with a power flow control feature and a verification of the controllers using digital simulations of power system models of different complexities

Published in:

Proceedings of the 41st International Universities Power Engineering Conference  (Volume:2 )

Date of Conference:

6-8 Sept. 2006