A Thrust Optimal Allocation Method Based on Ship Power Management System

Abstract

The invention discloses a thrust optimal distribution method based on a ship power management system. A controller acquires to-be-distributed resultant force and to-be-distributed resultant force torque currently; thrust optimal distribution is performed on the given thrust by use of the basic thrust distribution method and optimization results are sent to the power management system for analysis and judgment; if the optimization results do not meet the power grid requirements, secondary thrust optimal distribution will be performed; and the power management system adjusts the power grid of the whole ship according to the size of thrust after the secondary distribution. According to the invention, power of a thruster is adjusted by use of the thruster-biased thrust optimal distribution method, so the power grid of the whole ship is adjusted; the thrust optimal distribution method is simple and effective; quality of the power grid of the ship is effectively improved and power outage of the power grid is avoided; safety of the ship is improved; and abrasion and energy consumption of a host are reduced.

Description

technical field [0001] The invention relates to a thrust distribution method for a dynamic positioning ship, in particular to a thrust optimization distribution method based on a ship power management system. Background technique [0002] The 21st century is the era of marine economy. With the rapid rise of the marine industry, the dynamic positioning system has become an important part of offshore operations for offshore engineering ships\platforms such as offshore drilling platforms, lifting pipe-laying ships, cable-laying ships, and platform supply ships. In particular, it is an indispensable support system for deep sea operations, and it is an indispensable marine engineering equipment for my country to accelerate the development of marine resources. [0003] The dynamic positioning system of a ship refers to the use of its own propulsion device to effectively generate reaction forces and moments to resist the effects of wind, waves, currents and other external forces on ...

AI Technical Summary

Problems solved by technology

[0005] In addition to the thruster loads that account for the larger power of the ship, there are other loads such as heave compensators, cranes, winches, pumps, drilling systems, etc. on a dynamic positioning ship. The large impact caused by the ship's power system will affect the frequency and voltage changes of the entire ship's power grid, which will increase the wear and energy consumption of the generator set, and even cause the power failure of the whole ship's power system

The existing thrust distribution method only calculates the optimal speed or pitch, azimuth or rudder of each propeller according to the resultant force and force distance given by the DP (dynamic positioning) controller or the Joystick (joystick) controller. Angle command, without taking into account the impact of thruster load regulation and other sudden load power changes on the frequency and voltage of the entire ship's grid, the impact on the energy efficiency and wear of the generator set

[0006] The application number is 201210177475.9, and the invention patent titled "A Dynamic Positioning Ship Thrust Distribution Method Based on Thrust Distribution Management" has invented a ship dynamic positioning system thrust distribution method, but the invention is only a method obtained through thrust distribution calculation thruster method

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