Coordinated control method and system for ship artesian cooling system and power system
A power system and cooling system technology, applied in ship propulsion, ship construction, ship components, etc., can solve the problems of failure of the self-flow cooling system, insufficient cooling seawater flow, rising cooling demand, etc., and achieve the effect of ensuring the speed of power increase
Active Publication Date: 2021-10-29
WUHAN SECOND SHIP DESIGN & RES INST
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However, when the artesian cooling system actually operates within a certain range of ship speed, the power system, ship speed, and artesian cooling system are dynamically coupled, and the working states of the three will be delayed in turn during the power-up stage, that is, the power system needs to increase the power first. When the ship is accelerated, the cooling seawater supply capacity of the artesian cooling system will increase only after the ship accelerates. This feature causes the cooling demand of the power system to rise rapidly, and the cooling seawater supply capacity of the artesian cooling system will rise slowly under the dominance of the ship's movement speed. Compared with In this case, the cooling seawater flow provided by the artesian cooling system is insufficient, and an additional water pump must be started to increase the cooling seawater flow, which eventually leads to the failure of the artesian cooling system in the design speed area
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[0042] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below may be combined with each other as long as they do not constitute a conflict with each other.
[0043] It should be noted that, in the functional equations involved in the present invention, the symbol "·" is an operation symbol indicating the multiplication of two constants or vectors before and after, and "-" is an operation symbol indicating the subtraction of two constants or vectors before and after. All functional equations follow the mathematical rules of addition, subtraction, mult...
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The invention provides a cooperative control method and system of a ship's artesian cooling system and a power system. The method includes: collecting the ship's speed and the actual speed of the propeller in the power system in real time, and obtaining the current cooling margin of the artesian cooling system; setting the ship The safety margin of the minimum power boost of the power system during the sailing acceleration process; according to the equal margin control strategy, the safe speed of the propeller is obtained based on the current cooling margin and safety margin; determine the relationship between the input reference speed and the actual speed difference , and implement the corresponding safe speed control state, reference speed control state or maintain the original control state. The invention aims at the failure problem of the artesian cooling system in the power-up process of the ship power system using the artesian cooling system, defines and monitors the cooling margin of the artesian cooling system, and adopts an equal margin control strategy to make the hull speed of the ship, the power system and the artesian cooling Systems can work together.
Description
technical field [0001] The invention relates to the technical field of ship power system control, in particular to a cooperative control method and system of a ship's artesian cooling system and power system. Background technique [0002] Artesian cooling is an essential part of the ship, and the artesian cooling system is an important part of the ship's power system, supporting the normal operation of the ship's power system. The cooling water system is a ship-sea system with large seawater flow and large pipe diameter. The seawater pump is noisy during operation, and has a large energy consumption, which is not economical. The artesian cooling system is a new type of cooling water system, which utilizes the dynamic pressure during sailing to allow seawater to flow through the cooler through the water inlet device, thereby eliminating the need for seawater pumps, which can reduce the noise of the cooling water system and improve the economy of the power system It is an imp...
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IPC IPC(8): B63H21/38
CPCB63H21/383
Inventor 李献领邹海柯志武陶模陈朝旭冯毅郑伟周宏宽张克龙赵振兴代路吴君李勇柯汉兵魏志国
Owner WUHAN SECOND SHIP DESIGN & RES INST