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Microgrid: modelling and control

Alotibe, Mohammad (2010) Microgrid: modelling and control. Other thesis, Murdoch University.

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This thesis presents a complete model of a typical microgrid, together with identification of the required control strategies in order to operate this new type of power system. More specifically, it involves the modelling of PV systems, inverters, Phase Locked Loops (PLLs), loads and utility distribution networks, which can be then combined together to form a microgrid. The proposed microgrid control strategies in this thesis consider different operation conditions of a microgrid. For islanded operation, control techniques similar to those in conventional power systems are adopted and modified to regulate the microgrid operation. For grid-connected operation, constant current control and P-Q control schemes are used to control output powers of the sources within a microgrid. After examining the simulation results, it has been concluded that the designed microgrid model is adequate in its representation and it behaved in a way similar to real integrated power systems. Furthermore, proposed control strategies have proven their robustness and effectiveness in controlling the operation of microgrid while maintaining system stability.

The contents of this thesis lay a groundwork that allows for further investigation and development in the areas of microgrid control and microgrid modelling. In this report detailed descriptions on the modelling of typical microgrid components are provided, followed by control techniques demonstrations, and then simulation results for discussion and investigation.

Item Type: Thesis (Other)
Murdoch Affiliation(s): School of Engineering and Energy
Supervisor(s): Crebbin, Gregory
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