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An Adaptive Power Oscillation Damping Controller by STATCOM With Energy Storage

Mebtu Beza (Institutionen för energi och miljö, Elteknik) ; Massimo Bongiorno (Institutionen för energi och miljö, Elteknik)
IEEE Transactions on Power Systems (0885-8950). Vol. 30 (2015), 1, p. 484-493.
[Artikel, refereegranskad vetenskaplig]

This paper deals with the design of an adaptive power oscillation damping (POD) controller for a static synchronous compensator (STATCOM) equipped with energy storage. This is achieved using a signal estimation technique based on a modified recursive least square (RLS) algorithm, which allows a fast, selective, and adaptive estimation of the low-frequency electromechanical oscillations from locally measured signals during power system disturbances. The proposed method is effective in increasing the damping of the system at the frequencies of interest, also in the case of system parameter uncertainties and at various connection points of the compensator. First, the analysis of the impact of active and reactive power injection into the power system will be carried out using a simple two-machine system model. A control strategy that optimizes active and reactive power injection at various connection points of the STATCOM will be derived using the simplified model. Small-signal analysis of the dynamic performance of the proposed control strategy will be carried out. The effectiveness of the proposed control method to provide power oscillation damping irrespective of the connection point of the device and in the presence of system parameter uncertainties will be verified through simulation and experimental results.

Nyckelord: Energy storage; low-frequency oscillation; power oscillation damping (POD); recursive least square (RLS); static synchronous compensator (STATCOM)

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Denna post skapades 2014-05-14. Senast ändrad 2015-06-17.
CPL Pubid: 198040


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Institutioner (Chalmers)

Institutionen för energi och miljö, Elteknik (2005-2017)


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Chalmers infrastruktur