In this work, a modified primary regulation technique is proposed to control one of the inverter interfaced units feeding an islanded microgrid. The proposed approach employs an off-line minimum losses Optimal Power Flow, OPF, to extract a lookup table for the composition of the droop curve. Simulations prove that generators reach an operating point that corresponds to a minimum loss operation for the relevant power flow distribution. Since OPF has been implemented with frequency and voltage dependent models, the results of the modified droop are stable and also energy efficient. Further studies will address further analysis on systems showing different R/X ratio and modeling of more generators using the modified droop control.
Tran, Q., Shehadeh, H., E. Riva, S., Favuzza, S., Di Silvestre, M. (2017). Nonlinear droop control for minimum power losses operation in islanded microgrids. In Conference Proceedings - 2017 17th IEEE International Conference on Environment and Electrical Engineering and 2017 1st IEEE Industrial and Commercial Power Systems Europe, EEEIC / I and CPS Europe 2017 (pp. 1-5). Institute of Electrical and Electronics Engineers Inc. [10.1109/EEEIC.2017.7977874].
Nonlinear droop control for minimum power losses operation in islanded microgrids
Tran, Q. T. T.;Shehadeh, H.;Sanseverino, E. Riva;Favuzza, S.;Di Silvestre, M. L.
2017-01-01
Abstract
In this work, a modified primary regulation technique is proposed to control one of the inverter interfaced units feeding an islanded microgrid. The proposed approach employs an off-line minimum losses Optimal Power Flow, OPF, to extract a lookup table for the composition of the droop curve. Simulations prove that generators reach an operating point that corresponds to a minimum loss operation for the relevant power flow distribution. Since OPF has been implemented with frequency and voltage dependent models, the results of the modified droop are stable and also energy efficient. Further studies will address further analysis on systems showing different R/X ratio and modeling of more generators using the modified droop control.
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