Identifying Hopf Bifurcations of Networked Microgrids Induced by the Integration of EV Charging Stations
2021
A continuation method considering the dynamics of distributed energy resources (DERs) is presented to identify Hopf bifurcations in the networked microgrids induced by the integration of electrical vehicle (EV) charging stations. The dynamic model of networked microgrids is developed for bifurcation analysis. An adaptive predictor-corrector approach is presented for inclusively searching for equilibrium points in the space of bifurcation parameters. Extensive numerical results have demonstrated and validated the prediction of the subcritical Hopf bifurcation, based on which corresponding control strategies can be employed to stabilize the system when necessary. These features make the continuation method an effective tool for determining the system's critical operations and providing early warnings.
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