A Study on Multistage Coordination and Control Strategy for JiBei Grid Considering Wind Power Fluctuation

The establishment of independent control area for JiBei grid will improve the flexibility of regulation for local units, and absorb more wind power and other clean energy. However, due to the high proportion of wind power capacity and the fluctuation and intermittent of wind power, it presents a challenge to the power supply safety. In this paper, based on the prediction of regulation demand and regulation speed in different time scales, dynamic hierarchical control method is proposed. Several strategies of hierarchical control under the emergency of steady climbing, reverse and fluctuations are established. Hence, it improves the capacity of power supply safety and the proportion of wind absorption. Finally, based on the measurement of characteristics of wind fluctuation, the value of reserve capacity in different control levels is calculated.