AN ENERGY INTERNET AND A HIERARCHICAL CONTROL SYSTEM AND A CONTROL METHOD THEREOF

摘要

An energy internet and a hierarchical control system and a control method thereof, belong to the field of energy internet control and electrical technology. The energy internet comprises an energy router module (S8), an energy switch module (S12) and an energy subnet module (S18); the hierarchical control system of the energy internet comprises a data collection module (S54), an energy prediction unit (S55), an energy balance judgment module (S58), an energy surplus-deficit judgment module (S60), an energy balance control unit (S61), a power state regulation module (S64) and a frequency voltage regulation module (S59); the stability of the distributed power generation system and the high utilization of renewable energy are ensured to a maximum extent by reasonably monitoring all distributed generations (S38-S39) and local loads (S44-S45) in the energy internet, and predicting power generation/load state as well as optimizing electric energy in the energy internet using the energy router (S9-S11). A multi-agent consensus algorithm and a drooping control method are adopted for cooperative control on each device in the energy subnet to realize consistency between the node frequency of each device in the energy subnet and the power frequency of the distribution grid and stabilization of node voltage.