Forest solar power generation system

Abstract

A forest solar power generation system is disclosed, comprising: a hollow tower including a coupling portion provided for mounting a solar module; a lighting system installed on the tower that guides incident sunlight into the interior of the tower and transmits it to the coupling portion; a solar module mounted on the coupling portion that produces electrical energy from the sunlight transmitted by the lighting system; and a wildfire extinguishing device installed on the tower that sprays water in all directions of the tower when the temperature of the tower reaches a set temperature. When the above system is applied to forest land, there is no need for logging, and forest fires can be extinguished early, thereby preventing forest damage and the spread of forest fires.

Description

Technology Field

[0001] The present invention relates to a solar power generation system for forest land, and more specifically, to a solar power generation system that prevents forest damage and the spread of forest fires. Background Technology

[0002] In 2018, the Enforcement Decree of the Mountain Management Act was partially amended, and the following article was reported in relation to this.

[0003] According to Reporter Choi Hong-sik, "[2019 Solar Outlook] 2019 South Korean Solar Market 'Upward Trend' Attracting Global Attention," Industry News, January 2, 2019,

[0004] With the partial amendment of the Enforcement Decree of the Forest Management Act in 2018, solar power on forest land, which was previously subject to forest land conversion permits, was converted to a temporary forest land use permit. The amendment was announced last May and went into full effect on December 4. According to the amended decree, in the case of solar power on forest land, changes in land category are prohibited, and after using the forest land for 20 years, trees must be planted and the land restored to its original state. The reforestation fee, which was previously exempted, is now fully imposed to resolve issues such as forest damage and soil erosion. In addition, permit standards have been significantly strengthened, such as changing the average slope of forest land intended for use as solar power generation facilities from 25 degrees or less to 15 degrees or less.

[0005] Accordingly, Korean Patent Publication No. 10-2022-0038236 (hereinafter referred to as Prior Art 1) proposes a tower-type solar power generation device that can significantly reduce forest damage compared to existing forest solar power.

[0006] However, in the prior art 1, the solar panels are positioned on the outside of the tower, and since a rotating type is adopted to increase the light reception rate of the solar panels, forest land area greater than the rotation radius of the solar panels is required to reduce power generation losses caused by leaves, etc., so forest destruction is still inevitable. Prior art literature

[0007] Published Patent Application No. 10-2022-0038236 (Publication Date: March 28, 2022) Registered Patent Application No. 10-2009708 (Announcement Date: August 12, 2019) Registered Patent Application No. 10-2164234 (Announcement Date: October 12, 2020) The problem to be solved

[0008] The problem that the present invention aims to solve is to provide a solar power generation system that prevents forest damage and the spread of forest fires.

[0009] Meanwhile, the problems that the present invention aims to solve are not limited to those mentioned above, and other unmentioned problems will be clearly understood by those skilled in the art from the description below. means of solving the problem

[0010] As a means of solving the above problem, the forest solar power generation system proposed by the present invention comprises: a hollow tower including a coupling part provided for mounting a solar module; a light collection system installed on the tower that guides incident sunlight into the interior of the tower and transmits it to the coupling part; a solar module mounted on the coupling part that produces electrical energy using the sunlight transmitted by the light collection system; and a forest fire extinguishing device installed on the tower that sprays water in all directions of the tower when the temperature of the tower reaches a set temperature.

[0011] Here, the tower may be equipped with a temperature control system for internal temperature control.

[0012] In addition, the above-mentioned coupling portion may be formed in two or more places along the longitudinal direction of the tower, and the lighting system may include a transparent sphere installed at the top of the tower and a bundle of optical fibers, one side of which is in close contact with the inner surface of the transparent sphere and the other side of which is classified into a plurality of groups and each disposed in the coupling portion.

[0013] Additionally, the above-mentioned wildfire extinguishing device may include: a pipe connected to a water supply source; an electronic valve connected to one side of the pipe; a pump connected to the other side of the pipe to move water from the water supply source to the electronic valve; a nozzle connected to the electronic valve that sprays water to the outside of the tower when the electronic valve is opened; and a control unit connected to the pump, the electronic valve, and a temperature sensor of the temperature control system to determine whether to operate the pump and the electronic valve depending on whether the temperature of the tower reaches a set temperature.

[0014] Alternatively, the wildfire extinguishing device may comprise: a pipe connected to a water supply source; an electronic valve connected to one side of the pipe; a pump connected to the other side of the pipe to move water from the water supply source to the electronic valve; a nozzle connected to the electronic valve and spraying water to the outside of the tower when the electronic valve is opened; and a control unit connected to the pump, the electronic valve, and a temperature sensor of the temperature control system, which compares the temperature of the tower with the temperature of other surrounding towers and operates the pump and the electronic valve when the temperature difference is higher than a predetermined value. Effects of the invention

[0015] According to the present invention, forests can be protected by not requiring logging when installing a solar power generation system on forest land.

[0016] It is also equipped with a wildfire extinguishing device, which can prevent the spread of wildfires.

[0017] The effects of the present invention are not limited to the effects mentioned above, and other unmentioned effects will be clearly understood by those skilled in the art from the description below. Brief explanation of the drawing

[0018] FIG. 1 is a drawing showing an example of a photovoltaic power generation system proposed by the present invention installed in forest land, and FIG. 2 is a drawing showing the front and rear views of a photovoltaic power generation system proposed by the present invention, and FIG. 3 is a cross-sectional view of AA and BB of FIG. 1, and FIG. 4 is a CC cross-sectional view of FIG. 2, and FIG. 5 is a diagram showing the replacement of a photovoltaic module of a photovoltaic power generation system proposed by the present invention, and FIG. 6 is a diagram further illustrating a configuration for internal air ventilation of a photovoltaic power generation system proposed by the present invention, and FIG. 7 is a diagram further illustrating a temperature control system for temperature control of a photovoltaic power generation system proposed by the present invention, and FIG. 8 is a diagram showing the control relationship of the temperature control system of FIG. 7, and FIG. 9 is a drawing further showing a cleaning device of a photovoltaic power generation system proposed by the present invention, and FIG. 10 is a drawing showing a wildfire extinguishing device added to a solar power generation system, and Figure 11 is a diagram illustrating the conditions for the operation of the wildfire extinguishing device of Figure 10. Specific details for implementing the invention

[0019] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the attached drawings.

[0021] The forest land solar power generation system proposed by the present invention (hereinafter, system (1000)) is preferably installed in forest land, but the installation location is not limited to forest land.

[0022] The above system (1000) includes a tower (100), a lighting system (200), a solar module, a control unit (400), a wildfire extinguishing device, and a cleaning device.

[0024] The tower (100) is hollow, with an empty space (110) formed inside, and a temperature sensor (150) and a control unit (400) are installed in this empty space (110). Additionally, a first air circulation port (131) and a first opening / closing unit (141) for opening and closing the first air circulation port (131) are installed at the bottom, and a second air circulation port (132) and a second opening / closing unit (142) for opening and closing the second air circulation port (132) are installed at the top. Additionally, four connecting parts (124) are formed at predetermined positions along the longitudinal direction of the tower (100) for mounting solar modules.

[0025] The first air circulation port (131) and the second air circulation port (132) are formed to ventilate the air inside the tower (100) or to lower the temperature, and the air flows into the first air circulation port (131), moves upward along the tower (100), and is discharged into the second air circulation port (132).

[0026] The first opening / closing unit (141) and the second opening / closing unit (142) are configured to open / close the first air circulation port (131) and the second air circulation port (132), respectively, and are opened / closed by a command from the control unit (400) based on the detection value of the temperature sensor (150) installed inside the tower (100).

[0027] A temperature control system for controlling the internal temperature of a tower (100) can be constructed with the configuration of the first and second air circulation ports (131, 132), the first and second opening / closing parts (141, 142), the temperature sensor (150), and the control unit (400).

[0028] Among the four connecting parts (124), the first connecting part is formed in the first direction on the upper side of the tower (100), the second connecting part is located below the first connecting part and is formed at an angle of 90° with the first direction, the third connecting part is located below the second connecting part and is formed at an angle of 270° with the first direction, and the fourth connecting part is located below the third connecting part and is formed at an angle of 180° with the first direction.

[0029] Each joint (124) may be provided with a configuration for joining a solar module (e.g., a screw hole) and a configuration for sealing. And these joints (124) are provided to allow the solar module to be replaced when the solar module reaches the end of its lifespan.

[0031] The light collection system (200) is installed in the tower (100) and is configured to guide incident sunlight into the tower and transmit it to the connecting part (124). It may be any one of a reflective mirror system, a prism system, or a light pipe system, or may be configured with a transparent sphere (210) and a bundle of optical fibers (220).

[0032] A transparent sphere (210) is installed at the top of the tower (100). One side of a bundle of optical fibers (220) is attached to the inner surface of the transparent sphere (210). The other side of the optical fibers (220) is classified into groups a, b, c, and d, and each group is placed in four connecting parts (124), and the ends (221) of the optical fibers (220) face the connecting parts (124), so that the collected sunlight is transmitted to the four connecting parts (124).

[0034] The solar module is configured to produce electrical energy using sunlight transmitted by the lighting system (200), and is provided in the same number as the coupling part (124) and is coupled to each coupling part (124). Additionally, it can be replaced when its lifespan ends.

[0035] The first solar module (310) is connected to the first coupling part, the second solar module (320) to the second coupling part, the third solar module (330) to the third coupling part, and the fourth solar module (340) to the fourth coupling part. At this time, the power generation part (the part receiving sunlight) of each solar module is directed toward the interior of the tower (100).

[0037] When sunlight is transmitted to the optical fiber (210) attached to the transparent sphere (210), the optical fiber (210) transmits sunlight to the first solar module (310), the second solar module (320), the third solar module (330), and the fourth solar module (340), respectively.

[0038] Each solar module receives sunlight, produces electrical energy, and stores it in an ESS or transmits it to KEPCO. In addition, the amount of power generated by each solar module can be provided to the control unit.

[0040] The above wildfire extinguishing device includes a pipe (640), an electronic valve (610), a pump (630), a nozzle (620), a temperature sensor (150), and a control unit (400) as shown in FIG. 10.

[0041] One side of the pipe (640) is connected to a water supply source, and the other side is connected to an electronic valve (610). The water supply source may be a separately provided artificial water tank or groundwater. If the pipe (640) is connected to groundwater, a filter screen may be additionally installed to filter out impurities from the groundwater.

[0042] The electronic valve (610) may be a pilot-type solenoid valve and is connected to the control unit (400) and operates by a signal from the control unit (400).

[0043] The pump (630) is installed in any section of the pipe (640) and is connected to the control unit (400) so that water from the water supply source is moved to the electronic valve (610) by a signal from the control unit (400).

[0044] The nozzle (620) is configured to be connected to the electronic valve (610), and when the electronic valve (610) is opened, it serves to spray water to the outside of the tower (100). Depending on the installation of the nozzle (620), the direction of water spraying can be directed toward the outside, upper, or lower side of the tower (100). If the nozzle (620) is installed so that the direction of water spraying is directed toward the outside of the tower (100), water can be sprayed to a place far away from the tower (100). If the nozzle (620) is installed so that the direction of water spraying is directed toward the upper side of the tower (100), water can be sprayed over a wide area, i.e., around the tower (100), using only one nozzle (620). If the nozzle (620) is installed so that the direction of water spraying is directed toward the lower side of the tower (100), water can be sprayed in a concentrated manner near the tower (100).

[0045] Multiple nozzles (620) and electronic valves (610) may be installed, and the installation shape of the nozzles (620) may be varied so that water is sprayed in various directions. Alternatively, it is possible to configure a single nozzle (620) to spray upward, downward, and outward directions of the tower (100), or to spray in one selected direction.

[0047] The control unit (400) is connected to the pump (630), the electronic valve (610), and the temperature sensor (150) of the temperature control system and determines whether the pump (630) and the electronic valve (610) operate depending on whether the temperature of the tower (100) reaches a set temperature.

[0048] The control unit (400) can be operated remotely by an external server or by an internal program. The control unit (400) can determine that there is a wildfire under the following conditions and operate the pump (630) and the electronic valve (610): ① when the measured value of the temperature sensor (150) installed inside the tower (100) exceeds a set temperature (e.g., 60℃); ② when the difference between the measured value of the temperature sensor (150) installed inside the tower (100) and the measured value of the temperature sensor installed on the surrounding tower (102) is greater than or equal to the set temperature (e.g., 30℃); ③ when the difference between the measured value of the temperature sensor (150) installed inside the tower (100) and the average temperature of the surrounding towers (101, 103) is greater than or equal to the set temperature. If these conditions are met, the control unit determines that there is a wildfire and operates the pump (630) and the electronic valve (610) to spray water around the tower (100) (see FIG. 11). Conditions such as ① can be operated by the control unit (400) alone, and conditions such as ② and ③ can be operated by the control unit (400) by an external server.

[0050] The cleaning device consists of a rotating shaft (510) and a cleaning machine (520). The rotating shaft (510) is mounted on the surface of a transparent sphere (210), and the cleaning machine (520) is coupled to the rotating shaft (510) and rotates around the rotating shaft (510) in a manner that is in close contact with the surface of the transparent sphere (210) to clean the surface of the transparent sphere (210). The cleaning machine (520) may be equipped with a driving unit, such as a motor, for rotation.

[0051] When the washing machine (520) has finished washing, it can be positioned in a standby state on any part of the transparent sphere (210).

[0052] The control unit (400) is connected to the drive unit of the washing machine (520) and has built-in sunrise and sunset information so that the standby position of the washing machine (520) can be changed so as not to interfere with the sunlight of the optical fiber (220).

[0053] The control unit (400) can spray water over a wide area and drive the washing machine (520) when a wildfire occurs. Alternatively, even if no wildfire occurs, it can periodically spray water over a wide area and drive the washing machine (520). Alternatively, if the amount of power generated by the solar module deviates from the predicted range, it can determine that foreign matter has accumulated on the transparent sphere (210), spray water over a wide area, and drive the washing machine (520).

[0055] Meanwhile, it is known that solar modules have good power generation efficiency at 25°C and that power generation efficiency decreases when the temperature exceeds 25°C. Therefore, the present invention is equipped with a temperature control system that controls the temperature inside the tower (100). This temperature control system checks the temperature inside the tower (100) using a temperature sensor (150) and opens and closes the first and second air circulation ports (131, 132) by controlling the first and second opening / closing units (141, 142) by a control unit (400) based on the result, thereby maintaining the internal temperature of the tower (100) at 25°C or lower.

[0056] Referring to FIG. 8, the temperature sensor (150) checks the internal temperature of the tower (100), and the checked temperature value is transmitted in real time to the control unit (400). At this time, if the internal temperature of the tower (100) checked by the temperature sensor (150) is higher than the set temperature (e.g., 26℃), the control unit (400) controls the first and second opening / closing units (141, 142) to open the first and second air circulation ports (131, 132).

[0057] When the first and second air circulation ports (131, 132) are opened, air flows into the first air circulation port (131) by convection, rises along the inside of the tower (100), and is discharged through the second air circulation port (132). Meanwhile, if the temperature inside the tower (100) checked by the temperature sensor (150) is below the set temperature, the control unit (400) controls the first and second opening / closing units (141, 142) to close the first and second air circulation ports (131, 132). By repeating the above process, the temperature inside the tower (100) can be maintained at 25℃ or lower.

[0058] The opening of the first and second air circulation openings (131, 132) induces the cooling of the air inside the tower (100) through natural convection. However, in case the temperature inside the tower (100) is not lowered even by natural convection, a ventilation fan may be installed and operated at the top of the tower (100) to force convection. A ventilation opening and closing device may also be installed to open and close the ventilation fan to prevent external dust or foreign matter from entering the interior of the tower (100) when the ventilation fan is not operating.

[0060] The present invention has been described above with reference to its preferred embodiments. Those skilled in the art will understand that the present invention may be embodied in modified forms without departing from the essential characteristics of the invention. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. The scope of the invention is defined by the claims, not by the foregoing description, and all variations within the scope of the claims should be interpreted as being included in the invention. Explanation of the symbols

[0061] 1000: Solar power generation system 100: Tower 110: Empty space 124: Connection part 131: 1st Air Circulation Zone 132: 2nd Air Circulation Zone 141: 1st opening / closing section 142: 2nd opening / closing section 150: Temperature sensor 200: Mining System 210: Transparent sphere 220: Optical fiber 221: Fiber optic end 310: 1st solar module 320: 2nd solar module 330: 3rd solar module 340: 4th solar module 400: Control unit 510: Rotating shaft 520: Washer 610: Solenoid valve 620: Nozzle 630: Pump 640: Pipe

Claims

Claim 1 A hollow tower extending vertically to prevent forest damage, including a coupling portion provided for attaching and detaching a solar module; a lighting system installed in the tower to guide incident sunlight into the interior of the tower and transmit it to the coupling portion; wherein the lighting system comprises a transparent sphere installed on the upper part of the tower and a bundle of optical fibers, one side of which is in close contact with the inner surface of the transparent sphere and the other side which is classified into a plurality of groups and each disposed in the coupling portion, and a cleaning device that cleans the surface of the transparent sphere at set time intervals; A forest fire extinguishing device comprising: a pipe connected to a water supply source; an electronic valve connected to one side of the pipe; a pump connected to the other side of the pipe to move water from the water supply source to the electronic valve; a nozzle connected to the electronic valve and spraying water to the outside of the tower when the electronic valve is opened; and a control unit connected to the pump, the electronic valve, and a temperature sensor of the temperature control system, which operates the pump and the electronic valve when the temperature inside the tower exceeds a set value or when the temperature inside the tower differs from the average temperature of surrounding towers by more than the set temperature. Claim 2 A forest solar power generation system according to claim 1, characterized in that the tower is equipped with a temperature control system for internal temperature control. Claim 3 delete Claim 4 delete Claim 5 delete

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