Microgrid optimization scheduling method, system and device thereof

Abstract

The invention discloses a microgrid optimal scheduling method, system and a device thereof. The method comprises the following steps: establishing a microgrid economic scheduling model MO without considering the cycle life of electric energy storage, and solving to obtain an expected energy storage charging and discharging power curve; establishing a linearized energy storage cycle loss model according to the curve; and substituting the linearized energy storage cycle loss model into the microgrid economic loss model MO without considering the cycle life of electric energy storage to obtain amicrogrid economic scheduling model M1 which considers the energy storage cycle loss cost, and solving the microgrid economic dispatching model M1 to obtain a microgrid optimal dispatching decision which considers the energy storage cycle life. According to the invention, a linearized energy storage cycle loss model is established through an expected energy storage charging and discharging power curve; therefore, the energy storage cycle life loss is considered in the optimization scheduling process of the microgrid, a microgrid operator can be prevented from adopting an overcharge and overdischarge microgrid operation strategy, the basis and reference can be provided for the optimization operation plan of the microgrid, and the method has practical guiding significance.

Description

technical field [0001] The present invention relates to the technical field of electric power dispatching, in particular to a microgrid optimal dispatching method, system and equipment. Background technique [0002] The optimal scheduling of microgrid refers to the optimal distribution of distributed power sources and energy storage devices in the microgrid through optimal distribution of the output Power to meet the load demand and ensure the safe and stable operation of the microgrid. Micro-grids often require high initial investment. At present, the construction and maintenance costs of micro-grids remain high, and subsidies for distributed power generation and micro-grid-related equipment, especially for energy storage, have not yet been issued. The cost of energy storage systems accounts for the entire micro-grid. 1 / 3 of control system cost. Since the cost of energy storage is still high, excessive charging and discharging of energy storage will affect the service lif...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a micro-grid optimization scheduling method, system and equipment, which solves the technical problem that the energy storage cycle life loss is not considered in the prior art research on the micro-grid including the energy storage system

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