KR-20260062499-A - Apparatus for redistributing the ballast water of a bulkhead-type floating solar power plant

Abstract

A ballast water redistribution device for a bulkhead-type floating solar power system is disclosed. The ballast water redistribution device includes a measuring unit that measures the wave spectrum of an area where the floating solar power system is installed and the response amplitude operator (RAO) of the floating solar power system; a calculating unit that calculates the response amplitude spectrum of the floating solar power system using the measured wave spectrum and response amplitude; and a control unit that redistributes the ballast water by changing the ballast water tank into which the ballast water is injected among a plurality of ballast water tanks formed through a plurality of bulkheads inside the floating solar power system so that the calculated response amplitude spectrum is minimized.

Inventors

• 박종열

Assignees

• 국립창원대학교 산학협력단

Dates

Publication Date

20260507

Application Date

20241029

Claims (5)

1. In a ballast water redistribution device for a bulkhead-type floating solar power system, A measuring unit for measuring the wave spectrum of the area where the above-mentioned floating solar power system is installed and the motion response (RAO: response amplitude operator) of the above-mentioned floating solar power system; A calculation unit that calculates the motion spectrum of the floating solar power body using the measured blue spectrum and motion response; and A ballast water redistribution device comprising a control unit that redistributes ballast water by changing the ballast water tank into which ballast water is injected among a plurality of ballast water tanks formed through a plurality of bulkheads inside the floating solar power unit, so that the above-calculated motion spectrum is minimized.
2. In paragraph 1, A balance water redistribution device characterized by the above motion spectrum (S(ω)) being calculated using the following mathematical formula for sway and heave. Here, is the blue spectrum, RAO is the motion response, and ω is the frequency of the wave.
3. In paragraph 1, A ballast water redistribution device characterized by the roll motion (roll, Ф) of the above-mentioned floating solar power body being represented by the following mathematical formula. Here, I xx is the moment of inertia, a is the added moment of inertia, b is the damping factor, c is the restoring moment factor, and is the damping ratio, and is the resonant frequency at which the motion response has a maximum value.
4. In paragraph 3, A balance water redistribution device characterized by the above resonant frequency being represented by the following mathematical formula. Here, Δ is the displacement weight, and GM is the distance from the center of gravity to the metacenter.
5. In paragraph 1, A ballast water rearrangement device characterized by the above control unit arranging ballast water sequentially from the central ballast water tank to the edge ballast water tank among the plurality of ballast water tanks, or arranging ballast water sequentially from the edge ballast water tank to the central ballast water tank, checking the motion spectrum calculated by the above calculation unit, and determining a ballast water arrangement in which the resonance frequency at which the motion response is maximized is separated as much as possible from the frequency at which the wave spectrum is maximized so that the motion spectrum is minimized.

Description

Apparatus for redistributing the ballast water of a bulkhead-type floating solar power plant The present invention relates to a ballast water redistribution device for a bulkhead-type floating solar power system. Generally, solar panels manufactured for the purpose of solar power generation are installed via a support structure in various locations where a certain area can be secured, such as on land, on water, or on the rooftops or roofs of buildings. Due to their area-intensive nature, these solar panels are mainly installed on inexpensive forest land or farmland, which causes problems such as damage to forests and landscapes. As an alternative to this, floating solar power generation devices that generate electricity by installing solar panels on water have recently been gaining popularity. Such floating solar power generation devices enable the efficient use of national land and allow for solar power generation without damaging the natural landscape or environment. Additionally, they have the secondary effect of suppressing algae growth by blocking sunlight through the formation of shade on the water surface caused by the shadows from the solar panels. Meanwhile, floating solar power systems are installed on idle water surfaces and, due to their nature, are affected by environmental disturbances such as wind and waves. Due to these environmental disturbances, six degrees of freedom of motion (surge, sway, heave, roll, pitch, and yaw) occur in the floating system. The repetitive motion of the floating system affects the power generation performance and structural strength of the floating solar power system. FIG. 1 is a diagram schematically illustrating a system environment in which a ballast water redistribution device of a bulkhead-type floating solar power structure according to an embodiment of the present invention can be implemented. FIG. 2 is a diagram schematically illustrating the configuration of a ballast water redistribution device for a bulkhead-type floating solar power structure according to an embodiment of the present invention. FIGS. 3 and 4 are drawings for explaining a ballast water redistribution device for a bulkhead-type floating solar power structure according to an embodiment of the present invention of FIG. 2. As used in this specification, singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, terms such as "composed" or "comprising" should not be interpreted as necessarily including all of the various components or steps described in the specification, and should be interpreted as meaning that some of the components or steps may be excluded, or that additional components or steps may be included. Furthermore, terms such as "...part," "module," etc., as used in the specification refer to a unit that processes at least one function or operation, which may be implemented in hardware or software, or a combination of hardware and software. Hereinafter, various embodiments of the present invention will be described in detail with reference to the attached drawings. FIG. 1 is a schematic diagram illustrating a system environment in which a ballast water redistribution device of a bulkhead-type floating solar power plant according to an embodiment of the present invention can be implemented. Referring to FIG. 1, the ballast water redistribution device (100) of a bulkhead-type floating solar power plant according to an embodiment of the present invention redistributes ballast water by changing the ballast water tank (15) into which ballast water is injected among a plurality of ballast water tanks (15) of the floating solar power plant (10) according to environmental disturbances. Here, the floating solar power structure (10) has a solar panel (11) for solar power generation installed on its upper surface, and a plurality of ballast water tanks (15) formed inside through a plurality of partitions. Additionally, the ballast water redistribution device (100) can change the ballast water tank (15) into which the ballast water is injected by controlling a plurality of pumps (20) that inject water into a plurality of ballast water tanks (15) or discharge water from a plurality of ballast water tanks (15). Through this, the 6 degrees of freedom of motion of the floating solar power plant (10) can be minimized, and the performance of the floating solar power generation can be improved. A ballast water redistribution device (100) of a floating solar power structure with a bulkhead structure according to an embodiment of the present invention will be described in detail below with reference to FIGS. 2 to 4. FIG. 2 is a diagram schematically illustrating the configuration of a ballast water redistribution device for a bulkhead-type floating solar power plant according to an embodiment of the present invention, and FIG. 3 and FIG. 4 are diagrams for explaining the ballast water redistribution device for a bulkhead-type floating solar