KR102085618B1 - Floating photovoltaic system having a cooling system utilizing of wind force - Google Patents

Abstract

The present invention relates to a floating photovoltaic system having a cooling system which utilizes wind power to cool a solar panel at constant temperature and remove a pollutant of a surface of the solar panel in order to increase power generation efficiency. The floating photovoltaic system having a cooling system comprises: a floating structure (100) provided to float on the water; a solar panel (200) disposed in the floating structure (100) to convert sunlight into electric energy; a water channel unit (210) supplying water to the solar panel (200); a pump (220) pumping the water in the water and supplying the water to the water channel unit (210); and a wind power device (300) including a blade (310) provided in the floating structure (100) to be rotated by wind power and generating driving power for driving the pump (220).

Description

Floating photovoltaic system having a cooling system utilizing of wind force

The present invention relates to a water photovoltaic power generation system, and in particular, a photovoltaic power generation solar power panel that is equipped with a cooling system capable of cooling a photovoltaic panel to a predetermined temperature and removing contaminants on the surface by using wind power, thereby increasing power generation efficiency. It relates to a power generation system.

In recent years, many countries have provided much investment and policy support to develop new and renewable energy to replace fossil fuels to deal with climate change. In particular, photovoltaic power generation among renewable energy is recognized as a pollution-free clean energy source, and is spotlighted as a future alternative energy, and its growth is also explosive.

In the early stages of photovoltaic technology, research has been mainly focused on improving the efficiency of solar cells, and as a result, it is possible to achieve grid parity, where the cost of photovoltaic power generation is equal to the cost of fossil fuel generation. In the near future, it is producing results that can be expected. Recently, it has been expanded to research on how to install solar power and improve operating efficiency. Among them, recently, it can be said to be one of the applied technologies of photovoltaic power generation with floating photovoltaic technology. Water photovoltaic power generation is a new concept of photovoltaic power generation technology that combines existing land photovoltaic power generation technology with water floating technology.

The amount of power generated by the solar panel is greatly influenced by temperature and solar radiation, and as the amount of solar radiation increases, the amount of power generation increases while the amount of power generated decreases when the panel temperature increases. In particular, compared to terrestrial solar power, floating solar power has the advantage of securing sufficient solar radiation due to fewer surrounding obstacles, but there is a problem that power generation efficiency decreases because the temperature of the solar panel rises easily at high temperatures in midsummer. have.

In order to improve such a problem, in prior art registration patent publication No. 10-1802795, a water-type photovoltaic light having a means for cooling the photovoltaic panel by generating a water curtain on the front of the photovoltaic panel and spraying water on the back of the photovoltaic panel Generators are being proposed.

Registered Patent Publication No. 10-1802795 (Announcement date: 2017.12.28.)

The present invention is to provide a water-based solar power system capable of supplying cooling water using wind power to maintain the solar panel at a constant temperature and to clean the contaminants on the surface.

To achieve this object, the photovoltaic power generation system according to the present invention includes: a floating structure provided to float on the water; A solar panel disposed on the floating structure to convert sunlight into electrical energy; A water channel part for supplying water to the solar panel; A pump for pumping water in water and supplying it to the waterway part; It includes a blade provided on the floating structure is a rotational movement caused by wind power to generate a driving force for driving the pump.

Preferably, the wind power device is characterized in that the blade is installed on the vertical axis is a vertical axis method in which rotational motion is made.

More preferably, a generator connected to the vertical axis via a gear box to generate electrical energy; A battery in which electric energy generated by the generator is charged; A switch for controlling the power delivered from the battery to the pump; Further comprising a control unit for controlling the on / off of the switch ,.

More preferably, the control unit further includes a temperature detection unit for detecting the temperature of the solar panel and a contamination level detection unit for detecting the surface contamination level of the solar panel, depending on the detection temperature and the degree of contamination of the switch on / off. Control off.

Preferably, it is connected to the pump via a clutch that regulates the mechanical driving force together with the gearbox on the vertical axis, and includes an operation mechanism for operating the clutch.

Preferably, the inlet end of the pump further includes a filter for filtering foreign matter.

The floating solar power system of the present invention includes a floating structure and a solar panel disposed on the floating structure; A water channel part for supplying water to the solar panel; A pump for pumping water in the water and supplying it to the water channel part; Including a blade provided on a floating structure and rotating with wind power to generate a driving force for driving a pump, the solar panel can be cooled to a certain temperature by wind power to remove contaminants on the surface. It is possible to implement an eco-friendly cooling system.

1 is an overall configuration of a water solar system according to an embodiment of the present invention,
Figure 2 is a front configuration of the underwater solar system according to an embodiment of the present invention,
3 (a) (b) is a view showing a power transmission system diagram of a wind power device according to an embodiment of the present invention, respectively.

The specific structure or functional descriptions presented in the embodiments of the present invention are exemplified for the purpose of describing the embodiments according to the concept of the present invention, and the embodiments according to the concept of the present invention may be implemented in various forms. In addition, it should not be construed as being limited to the embodiments described herein, and should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention.

Meanwhile, in the present invention, terms such as first and / or second may be used to describe various components, but the components are not limited to the terms. The above terms are only for the purpose of distinguishing one component from other components, for example, without departing from the scope of rights according to the concept of the present invention, the first component may be referred to as the second component, Similarly, the second component may also be referred to as the first component.

When a component is said to be "connected" or "connected" to another component, it should be understood that other components may be directly connected or connected to the other component, but may be present in the middle. something to do. On the other hand, when a component is referred to as being “directly connected” to or “directly in contact with” another component, it should be understood that no other component exists in the middle. Other expressions for describing the relationship between the components, such as "between" and "immediately between" or "adjacent to" and "directly adjacent to", should be interpreted similarly.

The terms used in this specification are only used to describe specific embodiments, and are not intended to limit the present invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. The term "comprises" or "haves" in this specification is intended to indicate that a feature, number, step, action, component, part, or combination thereof is implemented, one or more other features or numbers, It should be understood that the presence or addition possibilities of steps, actions, components, parts or combinations thereof are not excluded in advance.

Hereinafter, specific embodiments of the present invention will be described with reference to the accompanying drawings.

1 is an overall configuration diagram of a water solar system according to an embodiment of the present invention, and FIG. 2 is a front configuration diagram of an underwater solar system according to an embodiment of the present invention.

1 and 2, the floating solar system of the present embodiment, the floating structure 100 provided to float on the water, and the floating structure 100 is disposed on the top to convert sunlight into electrical energy The optical panel 200, the sprinkling unit 210 for sprinkling water on the solar panel 200, the pumping unit 220 for pumping water to the sprinkling unit 210, and the floating structure 100 It is provided on the upper portion of the wind turbine 310 to generate a driving force for driving the pumping unit 220 by wind.

The floating structure 100 supports a solar panel while floating on a river, a lake, or a reservoir. In the present embodiment, one plate 101 is illustrated, but the plate 101 is a buoyancy means capable of providing buoyancy. This is provided, and such buoyancy means may be provided by a styrofoam or urethane foam or an air filled tank 104. In addition, the floating structure 100 is composed of a plurality of unit plates connected to each other rather than a single plate 101, and constant flow is allowed between the unit plates to maintain a stable posture even if algae or swelling occurs. .

Preferably, the floating structure 100 may be added with a mooring means to resist algae and maintain a stable position, and such anchoring means include an anchor 101 and an anchor 101 fixed to an underwater bottom surface. And a mooring line 102 connecting the floating structure 100.

The mooring line 102 may further include a tension adjusting unit 103 for adjusting tension. For example, the tension adjusting unit 103 may be provided by an elastic spring or a spring assembly composed of a plurality of springs. The tension adjusting unit 103 serves to maintain the position of the floating structure 100 stably by maintaining the tension of the mooring line 102 constant when a height change of the floating structure 100 occurs according to a change in water level Do it.

The photovoltaic panel 200 includes a plurality of solar cell cells and is provided in a plate shape of a certain width, and may be formed of a plurality of unit panels. The solar panel 200 is supported to have a certain angle of inclination to the floating structure 100, and can automatically or manually adjust the inclination angle of the solar panel 200 in order to increase the light collection efficiency of the sunlight according to the solar altitude. Adjustments can be added.

The water channel part 210 is installed on the upper portion of the floating structure 100 to supply water to the solar panel 200, and is supported by the fixed beam 211 and horizontally along the top of the solar panel 200. It includes a water supply pipe 212 is provided. The waterway pipe 212 is formed with a plurality of drainage holes 212a in the longitudinal direction, and the water flowing along the waterway pipe 212 is naturally drained through the drainage hole 212a to be inclined in front of the solar panel 200. As it flows down, the solar panel 200 is cooled and contaminants are cleaned at the front.

In this embodiment, the water channel part 210 illustrates the water channel piping distributed in three in correspondence with the solar panel 200 in three rows, and the arrangement pattern of the water channel piping according to the number or arrangement of the solar panels It can be variously modified.

Preferably, the water channel part 210 further includes a water storage tank 213 that is provided at a certain height to temporarily store water, and the water pumped by the pump 220 is temporarily stored in the water storage tank 213. It is delivered to the unit 210.

The pump 220 pumps water and transfers it to the water channel part 210 or the water storage tank 213, for example, the pump may be provided by a centrifugal pump. The pump 220 is started by the wind power device 300.

Preferably, the tip of the inlet line 221 of the pump 220 further includes a filter unit 222 for filtering foreign substances in water.

The wind power device 300 supplies energy required for starting the pump 220 including the blade 310 that is rotated by the wind power. Preferably, the wind power device 300 is provided by a plurality of blades 310 are fixed to the vertical axis 320 is rotated is made by a vertical axis method.

In general, the wind power device is divided into a horizontal axis method and a vertical axis method according to the axial direction of the blade. In the horizontal axis method, operation is performed only when the wind speed for full output is greater than that in the vertical axis method. In addition, the vertical axis method is mainly a resistance (or drag) among aerodynamic forces acting on the blade by installing a blade on the vertical axis. Since it converts to rotational force to generate power, it has the advantage of simple blade shape and low manufacturing cost compared to a horizontal axis type lift type blade.

In the present invention, the wind power device is intended to provide a driving force for starting a pump, and a small vertical axis wind power device is applied to provide a required driving force without disturbing the layout of the solar panel in a floating structure in a limited space. .

In this embodiment, the wind power device 300 is provided at each corner of the rectangular floating structure 100 to show four wind power devices of the vertical axis method.

In particular, referring to FIG. 2, a weight member 105 may be provided under the floating structure 100 for structural stability of the floating structure 100. The weight member 105 may be a drum filled with a heavy load weight or sand, and a part of the drum may be an empty space and some water may be filled in the space. The weight member 105 serves as a ballast tank that maintains the resilience of the floating structure 100 and adjusts the resilience.

Preferably, the weight member 105 is provided at a position at each corner of the floating structure 100 in which the wind power device 300 is installed.

Meanwhile, in the present invention, starting of the pump 220 using the wind power device 300 may directly use mechanical energy generated by the wind power device 30, or may be used by converting rotational kinetic energy of the wind power device into electrical energy. You can.

3 (a) (b) is a view showing a power transmission system diagram of a wind power device according to an embodiment of the present invention, respectively.

Referring to (a) of FIG. 3, the generator 411 is connected to the vertical axis 320 of the wind power device 300 via the gearbox 321 as a medium to generate electrical energy, which is a battery 412 ). Meanwhile, a switch 413 is provided between the battery 412 and the pump 220 to regulate the power supply, and the switch 413 is turned on / off by the control unit 414. The control unit 414 uses the detection signal of the temperature detection unit 415 for detecting the temperature of the solar panel and / or the pollution level detection unit 416 for detecting the surface contamination level of the solar panel as an input signal. When the temperature is higher than a certain temperature or the contamination level is higher than a certain level, a control signal is output to the switch 413 to spray cooling water to each solar panel by driving the pump 220.

Referring to (b) of FIG. 3 as another embodiment, the vertical axis 320 of the wind power device 300 is provided with a gearbox 321 that converts rotational driving force into an appropriate gear ratio, and an output terminal of the gearbox 321 Is connected to the pump 220 via the clutch 511. The clutch 511 serves to control the mechanical driving force output from the gearbox 321 and transmitted to the pump 220, and an operation mechanism 512 for operating the clutch 511 is provided.

As described above, the driving force for starting the pump 220 for supplying cooling water to the solar panel according to the operating environment or conditions of the water-based solar system uses the pump 220 by directly using mechanical energy generated by the wind power device. It can start, or convert the rotational kinetic energy generated in the wind field into electrical energy and start the pump 220 using the electrical energy.

The present invention described above is not limited by the above-described embodiments and the accompanying drawings, and various substitutions, modifications and changes are possible within the scope of the present invention without departing from the technical spirit of the present invention. It will be obvious to those who have the knowledge of.

100: floating structure 200: solar panel
210: water channel 220: pump
300: wind power device 310: blade

Claims (6)

A floating structure 100 provided to float on the water;
An anchor 101 fixed to the underwater bottom surface;
A mooring line 102 connecting the anchor 101 and the floating structure 100;
A tension adjusting unit 103 provided on the mooring line 102 to adjust tension;
A weight member 105 provided at a lower portion of each corner of the floating structure 100;
A solar panel 200 disposed on the floating structure 100 to convert sunlight into electrical energy;
An angle adjusting device for adjusting the inclination angle of the solar panel 200;
For supplying water to the solar panel 200, and includes a water channel pipe 212 that is supported by a fixed beam 211 and is provided horizontally along the top of the solar panel 200, the water channel pipe 212, a plurality of drainage holes 212a are formed in the longitudinal direction, and water flowing along the waterway pipe 212 is naturally drained through the drainage holes 212a to be inclined in front of the solar panel 200. A waterway part 210 provided to flow into;
A storage tank 213 provided at a predetermined height of the floating structure to temporarily store water supplied to the water channel part 210;
A pump 220 for pumping water in water and supplying it to the water storage tank 213;
A wind power device 300 installed on the vertical axis 320 provided on the floating structure 100 to generate driving force for driving the pump 220, including a blade 310 that is rotated by wind power;
The inlet end of the pump includes a filter unit 222 for filtering foreign substances,
The wind power device 300,
A generator 411 connected to the vertical axis via a gearbox to generate electrical energy;
A battery 412 for charging electric energy generated in the generator 411;
A switch 413 for controlling the power delivered from the battery 412 to the pump 220;
It includes a control unit 414 for controlling the on / off of the switch 413, the control unit 414 is a temperature detection unit 415 for detecting the temperature of the solar panel 200, and the solar Including the contamination level detection unit 416 for detecting the surface contamination level of the panel 200, the on-off solar system, characterized in that to control the on / off of the switch 413 according to the detection temperature and contamination level.
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