An energy internet and its hierarchical control system and control method

Abstract

An energy internet and its hierarchical control system and control method belong to the field of energy internet control and electrical technology. The Energy Internet includes an energy router module, an energy switch module, and an energy subnet module; the hierarchical control system of the Energy Internet includes: a data acquisition module, an energy prediction unit, an energy balance judgment module, an energy surplus judgment module, and an energy balance control unit , power state adjustment module and frequency voltage adjustment module; through reasonable monitoring of all distributed power sources and local loads in the Energy Internet and power generation / load state prediction, the energy router is used to optimize and coordinate the electric energy in the Energy Internet to ensure the greatest extent The stability of the distributed power generation system and the high utilization rate of renewable energy are improved; the multi-agent consensus algorithm and the droop control method are used to collaboratively control each device in the energy subnet, and realize the frequency and power distribution of each device node in the energy subnet. The power frequency of the network is consistent, and the node voltage is stable.

Description

technical field [0001] The invention belongs to the field of energy Internet control and electrical technology, and specifically relates to an energy Internet and its hierarchical control system and control method. Background technique [0002] At present, it is generally believed that the full development and utilization of green energy and renewable energy is an effective way to solve the energy crisis, greenhouse effect and environmental pollution. However, the power generation characteristics of renewable energy and the defects of the traditional grid prevent renewable energy from being directly integrated into the grid. In addition, there are still problems such as the power grid is not easy to perceive the subtle changes of the load, cannot track the load changes well, and cannot meet the user's increasingly high requirements for power quality. In order to fully develop and utilize renewable distributed energy sources such as solar energy, wind energy, and biomass nea...

AI Technical Summary

Problems solved by technology

However, due to the two-way flow of energy between the Energy Internet and the distribution network, and the characteristics of intermittent and The coordinated optimization and intelligent control of energy storage equipment and local loads, as well as the connection of the energy Internet with large-capacity distributed new energy to the distribution network, ensure the safe and stable operation of the power grid. In-depth research on energy internet and its control

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