Ship speed energy-saving optimization auxiliary method

Abstract

The invention discloses a ship speed energy-saving optimization auxiliary method. The method comprises the steps of equally dividing whole voyages according to steering points and voyages; obtainingship rotating speed and completion time of each branch navigation segment through an optimization algorithm on the premise of safely completing the voyage number task and the lowest oil consumption; repeating the same equal division on each sub-navigation segment of the previous stage, and calculating the ship rotating speed and the completion time of each sub-navigation segment of the next stageagain; and obtaining the optimized rotating speed of the main engine of each branch navigation segment of the last stage under the current condition until the distance of the equally divided navigation segments is shortened to the voyage within one day. According to the invention, voyage plans, the navigation area wind wave flow condition and the ship navigation performance can be comprehensivelyconsidered; the optimal energy-saving navigation state adapting to the ship navigation environment and the running rotating speed of a main engine of each navigation segment are given by taking the minimization of ship voyage number fuel consumption as a target, taking ship safety and voyage number time as constraint conditions and optimizing the full-voyage navigation speed, so that the ship safety and energy conservation are realized.

Description

technical field [0001] The invention belongs to ship speed control technology, in particular to a ship speed energy-saving optimization auxiliary method. Background technique [0002] There are currently two types of research on the optimal speed. One class analyzes the relationship between the fuel consumption of the ship’s main engine and the ship’s speed, and proposes the best energy-saving ship speed under the current displacement of the ship. value, to propose the optimal speed optimization model for tramp ships. Scholars at home and abroad have done a lot of research on the optimal operating speed of ships, and have also developed some decision-making systems that can improve economic benefits and reduce carbon emissions for shipping companies. [0003] However, there is no domestic speed optimization software that comprehensively considers the influence of wind, wave and current and ship performance in the whole voyage. Make full use of the marine hydrometeorologica...

AI Technical Summary

Problems solved by technology

[0006] 2. There are problems in the calculation of ship stall

[0008] 3. There are problems in the air conduction of ships

[0011] At present, the speed of the main engine on domestic ships is mainly determined by the captain. The captain calculates a single speed for the whole process according to the voyage order (voyage departure time and voyage arrival time), the main engine tachometer and experience; adjust the ship's speed according to the remaining voyage and time on the way. speed to achieve the purpose of arriving at the port on time; this method lacks the prediction of the sea conditions on the entire voyage, it is difficult to obtain a reasonable main engine speed on each voyage, and at the same time it cannot reasonably avoid unfavorable sea state areas. Determining the speed of the main engine is blind and uncertain, and lacks effective scientific basis

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