Microgrid energy optimization method based on power spring

Abstract

The invention provides a microgrid energy optimization method based on a power spring, which comprises the steps of analyzing the topological structure of the power spring to obtain an optimization constraint condition for the stable operation of the power spring, and obtaining a power spring optimization part by taking the operation efficiency of the power spring as an optimization target; according to the operation factors of energy storage, determining the optimization constraint condition for the stable operation of energy storage, and obtaining an energy storage optimization part by taking the charge and discharge times of an energy storage system as an optimization target; considering the upper and lower limits of output of controlled distributed generation and the climbing speed asthe optimization constraint condition for the optimization part of controlled distributed generation, and obtaining a controlled distributed energy optimization part by taking the operation efficiencyof controlled distributed generation as an optimization target; and on the basis of the optimization constraint conditions in the previous three steps, combining the optimization targets in the previous three steps with the additional optimization factors of a microgrid to achieve the power balance of the entire microgrid. The microgrid can work in a stable and efficient operation state.

Description

technical field [0001] The present invention relates to the technical field of micro-grids, in particular to an energy optimization method for micro-grids based on electric springs. Background technique [0002] Renewable energy sources such as wind energy and solar energy are intermittent and unstable. When renewable energy sources such as wind energy and solar energy are connected to the grid on a large scale, their disturbed output will cause a mismatch between power generation and load demand, affecting the normal operation of the system, and may even cause system instability. [0003] In the case of uncontrollable power generation, the matching of power generation and power consumption can only be achieved by adjusting the power consumption at the load demand. A large number of practices have shown that the loads of power systems can be divided into critical loads that are sensitive to voltage fluctuations and non-critical loads that are insensitive to voltage fluctuat...

AI Technical Summary

Problems solved by technology

[0006] At present, there is no description or report of the similar technology of the present invention, and no similar data at home and abroad have been collected yet.

Images