Multi-Time-Scale Voltage Regulation in ADN: A Designable Event-Triggered Method

In order to improve bus voltage profile in active distribution networks with high penetration of photovoltaics (PV) and electric vehicle (EV), this paper proposes an event-triggered multi-time-scale regulation method. Under a designable triggered mechanism driven by changes in power flow, a sensitivity-based centralized hybrid power compensation of PV and EV is used to alleviate long-term voltage offset throughout trigger intervals. Then, a dispersed local power compensation of PV or EV is additionally used to reduce short-term voltage fluctuation at involved nontrigger instants. Besides, its comprehensive performance is analyzed by establishing quantitative index, which can in turn be used to design trigger parameter. Finally, the effectiveness of this method is verified through case study in a real scene.