All-electric ship economy scheduling method and system based on virtual energy storage

Abstract

The invention provides an all-electric ship economic dispatching method and system based on virtual energy storage. The method comprises the following steps: a virtual energy storage establishment step: establishing a strong nonlinear relationship between the power required by an electric propulsion load and the ship speed; a physical energy storage establishing step: establishing a storage battery as a shipborne physical energy storage charging and discharging equation; a diesel generator building step: defining an oil consumption formula of the diesel generator per hour; an all-electric ship economy scheduling model establishing step: according to the strong nonlinear relationship and the oil consumption formula, setting an objective function of lowest fuel cost and carbon emission of the all-electric ship; and a virtual energy storage all-electric ship economy scheduling model establishing step: according to the target function, solving the economy scheduling problem of the all-electric ship by adopting a particle swarm optimization algorithm. Through virtual energy storage, the comprehensive electric propulsion system can be better utilized, and the fuel efficiency of the diesel generator is improved, so that the fuel cost is reduced, and the environmental friendliness is improved.

Description

technical field [0001] The present invention relates to the field of power system operation and ship technology, in particular to a method and system for economical dispatching of all electric ships based on virtual energy storage. Background technique [0002] With the gradual reduction of global fossil energy, the increasingly prominent environmental problems, and the increasing fuel costs and transportation costs, how to improve the energy efficiency of ship power systems and reduce transportation costs and pollutant emissions is imminent. As the degree of electrification of ship power stations is getting higher and higher, all-electric ships incorporating integrated electric propulsion technology can completely change this unfavorable situation and bring significant economic benefits [0003] In the vision of all-electric ships, the main purpose is to use advanced electric propulsion technology to change the single navigation mode of traditional ships and greatly improve...

AI Technical Summary

Problems solved by technology

The controller is only for diesel generators, and has not considered the optimal scheduling at the system level, nor has it considered the technical means to improve energy efficiency by controlling the electric propulsion load. The speed of the ship cannot be flexibly controlled through this controller, and the voyage requirements of the ship cannot be guaranteed.

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