Dynamic positioning vessel thruster load limit method based on on-line available power

A dynamic positioning and load limiting technology, which is applied to ship propulsion, propulsion components, propulsion device engines, etc., can solve problems such as insufficient power available in the power system, power failures in the power system, etc., achieve rapid load limit, improve safety, and load limit good effect

Active Publication Date: 2012-09-26
哈尔滨船海智能装备科技有限公司
View PDF5 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the special working condition of the ship dynamic positioning operation, the overload protection strategy for the propeller should be considered in the motor drive local controller of each propeller, and if the dynamic positioning ship is in the dynamic positi

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dynamic positioning vessel thruster load limit method based on on-line available power
  • Dynamic positioning vessel thruster load limit method based on on-line available power
  • Dynamic positioning vessel thruster load limit method based on on-line available power

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] The present invention will be further described below with examples in conjunction with the accompanying drawings.

[0037] In the method of limiting the real-time load of the thruster for protection, the partition of the switchboard is divided according to the open / closed state of the bus connection circuit breaker of the medium voltage switchboard, and the dynamic positioning operation with high safety level requirements is performed on the dynamic positioning ship In general, all distribution buses are required to be connected into a ring network for overall power supply, but in reality, the switchboard may be divided into several different distribution boards due to the different opening / closing states of the bus connection circuit breaker of the medium voltage distribution board. Power supply partitions should be performed according to each real-time power supply partition when calculating online available power and limiting thruster loads. Such as figure 2 It is...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a dynamic positioning vessel thruster load limit method based on on-line available power. The method includes computing available power of on-line generator sets in subareas and real-time load power of thrusters by real-time inspection of subarea situations of a distribution board of a dynamic positioning vessel electric propulsion system, then filtering by a digital filter so as to compute a load limit factor of each thruster and a power upper limit value that given thrust of each thruster must satisfy in next control cycle, and finally converting the power upper limit value to a given rotating speed and torque upper limit value of each thruster so as to prevent power failure of the whole vessel caused by overload of the thrusters and the electric propulsion system. Output of a dynamic positioning controller is limited by the aid of the available power of a power station and real-time power of the propulsion system according to optimized load limit coefficient, so that operation safety is improved, power failure of the whole vessel caused by the fact that motors are started untimely due to overload of the thrusters is reduced, and defects of a power station management system are overcome.

Description

technical field [0001] The invention relates to a control method of a dynamic positioning ship propeller, in particular to a real-time load limiting method of a dynamic positioning ship propeller. Background technique [0002] Energy is increasingly scarce in today's society, and asking for oil and natural gas from the vast ocean has become one of the important ways for various countries to solve energy problems. Dynamic positioning vessels equipped with advanced dynamic positioning systems are the main devices for offshore resource exploration and collection. A dynamically positioned ship refers to a ship that automatically maintains its own position (fixed position or predetermined track) and heading using only the thrust of its propellers. Different from operations on land, offshore operations of dynamic positioning vessels may encounter harsh working conditions such as wind, waves, and currents. The dynamic positioning system controls the thruster system to actively re...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B63H21/21H02J3/14
Inventor 付明玉宁继鹏夏俊明林孝工刘建旭
Owner 哈尔滨船海智能装备科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap