KR101819328B1 - Photocoltaics system with snow removal function and photocoltaics method using the same - Google Patents

Photocoltaics system with snow removal function and photocoltaics method using the same Download PDF

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KR101819328B1
KR101819328B1 KR1020160041739A KR20160041739A KR101819328B1 KR 101819328 B1 KR101819328 B1 KR 101819328B1 KR 1020160041739 A KR1020160041739 A KR 1020160041739A KR 20160041739 A KR20160041739 A KR 20160041739A KR 101819328 B1 KR101819328 B1 KR 101819328B1
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solar
voltage
snow removal
module
power generation
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KR20170115179A (en
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김현준
조근영
조성배
유정재
박은비
박지홍
정한상
장정호
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주식회사 럭스코
한국수자원공사
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/10Cleaning arrangements
    • H02S40/12Means for removing snow
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40Testing power supplies
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01WMETEOROLOGY
    • G01W1/00Meteorology
    • G01W1/14Rainfall or precipitation gauges
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/0481Encapsulation of modules characterised by the composition of the encapsulation material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/049Protective back sheets
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30Electrical components
    • H02S40/32Electrical components comprising DC/AC inverter means associated with the PV module itself, e.g. AC modules
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • H02S50/10Testing of PV devices, e.g. of PV modules or single PV cells
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/10Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145Carbon only, e.g. carbon black, graphite
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/20Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • Hydrology & Water Resources (AREA)
  • Atmospheric Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Environmental Sciences (AREA)
  • Photovoltaic Devices (AREA)
  • Buildings Adapted To Withstand Abnormal External Influences (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)

Abstract

The present invention relates to a solar power generation system having a snow removal function and a solar power generation method using the solar power generation system. The solar power generation system having a snow removal function includes a heating film of carbon material which generates heat by receiving a voltage, A sensing module for sensing a snowfall amount and a solar radiation amount of the solar photovoltaic module, comparing the sensed snow amount and a solar radiation amount with respective predetermined threshold values, And a control panel for controlling the supply of the alternating voltage to the heat generating film or cutting off the supply of the heat generating film according to a result of the comparison, wherein the control panel is connected to the solar module, The heating film is turned on or turned off to supply the AC voltage to the heating film, It comprises a distribution board for controlling to. As described above, according to the present invention, it is possible to determine whether or not to remove snow from the solar module in consideration of the snow removal time, the snowfall amount, and the solar radiation amount. Particularly, the snow removal operation is interrupted between the sunset time and the sunrise time, and the power consumed for snow removal is compared with the generated power at the top of the photovoltaic module in the snow accumulation state, It is possible to increase the power efficiency because the snow removal is judged in consideration of the power relationship.

Description

TECHNICAL FIELD [0001] The present invention relates to a photovoltaic power generation system having a snow removal function, and a photovoltaic power generation method using the same. BACKGROUND OF THE INVENTION [0002]

The present invention relates to a solar power generation system having a snow removal function and a solar power generation method using the solar power generation system. More particularly, the present invention relates to a solar power generation system having a snow removal function for increasing solar power generation efficiency by removing snow, The present invention relates to a solar power generation method.

Recently, energy resources such as petroleum, coal and natural gas are expected to be depleted, and awareness of environmental pollution is rising. Especially, the solar power generation system is being developed through enormous support from many countries in the world, and many companies are entering into development projects.

However, solar power generation is a power generation technology that is sensitive to weather and climate change because it generates electricity by collecting sunlight. The power generation is high when the weather is clear and the solar radiation is large, but the power generation is low on the day when the weather is cloudy or bad weather occurs. Especially, when the snow is piled up on the solar module, the solar module can not concentrate the sunlight, so the power generation efficiency is very low. Therefore, it is essential to remove the snow cover of the solar module in order to increase the solar power generation efficiency.

However, most solar power plants are often operated by unmanned or small manpower, which makes it difficult to snow and there is a risk of safety accidents when snowing. In addition, in recent years, frequent snowfall has occurred, and snow is easily frozen due to moisture content, making snow removal difficult. In addition, in order to increase the power generation efficiency, there are more cases in which solar modules are installed in snowy areas such as roofs and lakes of snowy areas where snow removal is difficult.

The technology which is the background of the present invention is disclosed in Korean Patent Laid-Open No. 10-2013-0087171 (published on Aug. 20, 2013).

SUMMARY OF THE INVENTION It is an object of the present invention to provide a photovoltaic power generation system having a snow removal function for removing solar snow to improve efficiency of photovoltaic power generation, and a photovoltaic power generation method using the same.

According to an aspect of the present invention, there is provided a solar photovoltaic power generation system including a snow removing function, the solar power generation system including a heating film made of carbon to generate heat by receiving a voltage, A sensing module for sensing a snowfall amount and a solar radiation amount of the solar module, comparing the sensed snowfall amount and a solar radiation amount with respective predetermined threshold values, comparing a current time with a preset snow removal time, A control panel connected to the photovoltaic module and configured to turn on or off the switch according to the control signal to generate a shutdown control signal for controlling the supply of the alternating voltage to the heating film, and a distribution panel for controlling the supply of the AC voltage or the supply of AC voltage to the heating film.

The solar module includes a first sealing material stacked on a backsheet, a heat generating film of carbon material stacked on top of the first sealing material, a second sealing material stacked on top of the heating film, A third sealing material stacked on top of the solar cell module, and a tempered glass stacked on top of the third sealing material.

The first to third sealing materials may be formed using a polyolefin elastomer.

The control panel determines whether or not the current time is included in the snow removal operation time, determines whether the sensed snowfall amount is greater than a predetermined first threshold value, and determines whether the sensed amount of solar radiation is greater than a predetermined second threshold value If the current time is included in the snow removal time and the sensed snowfall is greater than or equal to a predetermined first threshold value and the sensed amount of solar radiation is greater than or equal to a preset second threshold, The control unit generates a snow removal control signal for controlling an AC voltage to be supplied to the heat generating film. When the current time is not included in the snow removal operation time or the sensed snowfall amount is less than a predetermined first threshold value, A signal for generating a snow removal control signal for controlling the supply of AC voltage to the heating film is cut off It may include a.

Wherein the distribution panel is configured to connect the transformer and the heat generating film through a first switch and to supply the AC voltage generated by the transformer at the time of turning on to the heating film, And a first switch unit for intercepting the first switch unit.

The power distributing panel connects the inverter and the heat generating film through a second switch and receives an AC voltage generated from a transformer connected to the inverter when the lamp is turned on and supplies the AC voltage to the heating film. And a second switch unit for interrupting the supply of the voltage.

Wherein the control panel generates a power generation control signal for controlling whether or not the solar module is powered on, the power distribution panel connects the solar module and the inverter via a third switch, and in accordance with the power generation control signal, And a third switch unit for receiving the DC voltage generated from the solar module at the time of supplying the solar module to the inverter and stopping the power generation of the solar module at the time of turn-off.

In another aspect of the present invention, there is provided a solar power generation method using a solar power generation system, comprising the steps of sensing a snowfall amount and a solar radiation amount of a solar module including a heating film of carbon material, Comparing the sensed snowfall amount and the solar radiation amount with respective preset threshold values and comparing the current time with a predetermined snow removal time, controlling the supply of the AC voltage or cutting off the supply of heat to the heating film according to the comparison result Generating a control signal and controlling the switch to turn on or turn off according to the control signal to supply or block the AC voltage to the heating film.

As described above, according to the present invention, it is possible to determine whether or not to remove snow from the solar module in consideration of the snow removal time, the snowfall amount, and the solar radiation amount. In particular, it is possible to reduce unnecessary power consumption by stopping snow removal between sunrise time and sunrise time without solar radiation, and to compare the power consumed for snow removal and the generated power at the top of the solar module, The power efficiency can be improved. In addition, the power efficiency can be improved by considering the relation between the power used for snow removal and the generated power after snow removal through the irradiation amount to determine the snow removal.

The heating film of the carbon material according to the present invention can maintain the durability of the module during snow removal because there is no melting phenomenon in which a solid material absorbs energy and changes into a liquid state. In addition, a heat generating film formed using a carbon material has a weight less than that of a metal, minimizing a mechanical load applied to a mounting structure of the solar module, and has advantages of being more elastic and stronger than a metal material and having high durability. In particular, since the heat generating film of the carbon material according to the embodiment of the present invention has a high thermal conductivity, it has a high ability to discharge the heat of the solar module to the outside during solar power generation, thereby suppressing the temperature rise of the solar module .

The sealing material of the solar module according to the present invention is formed by using a polyolefin elastomer material, thereby improving the durability of the solar module and improving the electrical stability of the heating film and the back sheet through high insulation performance.

According to the embodiment of the present invention, since the power used for snow removal can be supplied in the direction of the transformer, the inverter, the distributing box, and the solar module, it is unnecessary to install a separate transmission line connected from the transformer to the distribution board. System construction is easy.

1 is a view for explaining a solar power generation system having a snow removal function according to an embodiment of the present invention.
2 is a configuration diagram of the control panel shown in Fig.
3 is a view for explaining the distribution board shown in Fig.
Fig. 4 is a view for explaining the solar module shown in Fig. 1. Fig.
FIG. 5 is a flowchart illustrating a solar power generation method according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention, parts not related to the description are omitted, and similar parts are denoted by like reference characters throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention.

1 to 4, a photovoltaic power generation system according to an embodiment of the present invention will be described. FIG. 1 is a view for explaining a solar power generation system having a snow removal function according to an embodiment of the present invention, and FIG. 2 is a configuration diagram of the control panel shown in FIG. Fig. 3 is a view for explaining the distribution panel shown in Fig. 1, and Fig. 4 is a view for explaining the solar module shown in Fig.

1, a solar power generation system having a snow removal function according to an embodiment of the present invention includes a sensing module 100, a control panel 200, a distribution board 300, a solar module 400, an inverter 500 ) And a transformer (600).

First, the sensing module 100 senses the amount of snow and solar radiation of the solar module 400.

Specifically, the SenSeng module can sense the amount of snow on the upper surface of the solar module 400 using a snowfall measuring sensor using ultrasonic waves or a laser. In addition, the sensing module 100 can sense the solar radiation using a solar radiation sensor or a quantum sensor that measures the intensity of light or solar light.

Meanwhile, the sensing module 100 is connected to the control panel 200 by wired / wireless communication, and transmits the sensed amount of snow and radiation to the control module.

Next, the control panel 200 compares the sensed snowfall amount and the solar radiation amount with predetermined threshold values, and compares the current time with the predetermined snow removal time. In accordance with the comparison result, the control panel 200 generates a control signal for controlling the supply of the alternating voltage to the heating film 430 or cutting off the supply of the AC voltage.

As shown in FIG. 2, the control panel 200 according to the embodiment of the present invention includes a determination unit 210 and a signal generation unit 220.

First, the determination unit 210 determines whether the current time is included in the snow removal time. At this time, the snow removal operation time can be preset to a time zone between sunrise time and sunset time. In addition, since the sunrise time and the sunset time vary with a year, the snow removal time can be set differently at a constant date interval.

Then, the determination unit 210 determines whether the sensed snowfall amount is greater than a predetermined first threshold value. At this time, the first threshold value may be set in consideration of the electric power used for removing the snow on the upper surface of the solar module 400 and the production power for the solar power generation without snow removal.

In addition, the determination unit 210 determines whether the sensed amount of solar radiation is greater than a predetermined second threshold. At this time, the second threshold value may be set in consideration of electric power used for snow removal on the upper surface of the solar module 400 and production power of the solar module 400 after snow removing.

Next, the signal generation unit 220 generates a snow removal control signal using the determination result of the determination unit 210.

Specifically, if the current time is included in the snow removal time, the sensed snowfall is greater than or equal to a preset first threshold, and the sensed solar radiation is greater than or equal to a predetermined second threshold, And generates a snow removal control signal for controlling the AC voltage to be supplied to the heating film 430 included in the solar module 400 according to the embodiment of the present invention.

On the other hand, if the current time is not included in the snow removal operation time, or if the sensed snowfall amount is smaller than the predetermined first threshold value or the sensed amount of solar radiation is smaller than the predetermined second threshold value, And generates a snow removal control signal for controlling the supply of AC voltage to the heating film 430 included in the solar module 400 according to the embodiment.

The signal generator 220 may generate a power generation control signal for controlling whether the solar module 400 is generated or not. For example, the signal generating unit 220 generates a power generation control signal for controlling the power generation of the solar module 400 to be stopped when a snow removing signal for controlling the AC voltage to be supplied to the heating film 430 is generated . In contrast, the signal generator 220 receives the DC voltage generated from the solar cell module 400 and supplies the generated DC voltage to the inverter 500 when the snow removing control signal for controlling the supply of the AC voltage to the heating film 430 is generated It is possible to generate the power generation control signal. In addition, the signal generator 220 controls the solar cell module 400 to supply the generated DC voltage to the inverter 500 after receiving the DC voltage generated when the snow removing signal controlling the AC voltage is supplied to the heating film 430 To generate power generation control signals.

Meanwhile, the signal generator 220 is connected to the distribution board 300 by wired / wireless communication, and transmits the generated snow removal control signal and power generation control signal to the distribution board 300.

Next, the distribution panel 300 is connected to the solar module 400. The distribution board 300 controls the switch to be turned on or off according to a control signal transmitted from the control panel 200 to supply or block the AC voltage to the heat generating film 430.

3, the distribution board 300 according to the embodiment of the present invention may include a first switch unit 310, a second switch unit 320, and a third switch unit 330.

First, the first switch unit 310 connects the transformer 600 and the heat generating film 430 through the first switch. The first switch unit 310 receives the AC voltage generated by the transformer 600 at the turn-on time from the transformer 600 and supplies the AC voltage to the heating film 430.

Next, the second switch unit 320 connects the inverter 500 and the heat generating film 430 via the second switch. The second switch unit 320 receives the AC voltage generated by the transformer 600 connected to the inverter 500 when the first switch unit 320 is turned on from the inverter 500 and supplies the AC voltage to the heating film 430.

Next, the third switch unit 330 connects the solar module 400 and the inverter 500 via the third switch. The third switch unit 330 receives the DC voltage generated from the solar module 400 at the time of turning on and supplies the DC voltage generated by the solar module 400 to the inverter 500.

According to an embodiment of the present invention, the distribution board 300 includes the first switch unit 310 and the third switch unit 330, or includes the second switch unit 320 and the third switch unit 330 .

Next, the photovoltaic module 400 includes a heating film 430 made of carbon material which generates heat by receiving an AC voltage. The solar module 400 absorbs sunlight to generate a DC voltage.

4, the solar module 400 according to the embodiment of the present invention includes a back sheet 410, a first sealing material 420, a heat generating film 430 made of carbon, a second sealing material 440, A battery module 450, a third sealing material 460, and tempered glass 470.

First, the backsheet 410 is positioned at the bottom of the solar module 400 and protects the solar module 400. In addition, the solar module 400 emits heat generated when the solar module 400 condenses solar light to generate a DC voltage, thereby externally discharging the solar module 400 to lower the temperature of the solar module 400. At this time, the back sheet 410 may be formed using polyethylene terephthalate. Meanwhile, according to the embodiment of the present invention, the back sheet 410 may be formed in a white color. In this case, the solar light reflectance can be increased, so that the power generation efficiency of the solar module 400 can be improved.

Next, the first sealing material 420 is laminated on the top of the back sheet 410. Specifically, the first sealing material 420 is positioned between the back sheet 410 and the heat generating film 430. The first sealing material 420 blocks foreign substances such as moisture, air, and dust from entering from the outside. The first sealing material 420 blocks the electrical flow between the back sheet 410 and the heat generating film 430 and protects the solar cell module 450 from an external impact. At this time, the first sealing material 420 may be formed using a polyolefin elastomer.

Next, the heat generating film 430 is formed using a carbon material, and is stacked on top of the first sealing material 420. The exothermic film 430 converts the AC voltage supplied from the control panel 200 into heat energy and transfers the converted AC voltage to the tempered glass of the solar module 400 to remove the snow on the upper surface of the solar module 400. At this time, the carbon material includes carbon black, carbon fiber, carbon nanotube, graphene, and the like.

According to an embodiment of the present invention, a heat generating sheet includes a first member formed of polyethylene terephthalate, a carbon material heating element stacked on top of the first member, and a second member formed of polyethylene terephthalate laminated on a carbon material heating element. Member structure.

Next, the second sealing material 440 is laminated on top of the heat generating film 430. Specifically, the second sealant 440 is positioned between the heat generating film 430 and the solar cell module 450. The second sealing member 440 blocks foreign substances such as moisture, air, and dust from entering from the outside. The second sealant 440 blocks the electrical flow between the solar cell module 450 and the heat generating film 430 and protects the solar cell module 450 from external impacts. At this time, the second sealant 440 may be formed using a polyolefin elastomer.

Next, the solar cell module 450 is stacked on top of the second sealing material 440, and collects solar light to generate a DC voltage. Specifically, the solar cell module 450 is formed by connecting solar cell cells that absorb solar light and generate a DC voltage in series. At this time, dozens of solar cell cells are used in consideration of the transforming efficiency of the inverter 500. In addition, the solar cell module 450 is connected to the distribution board 300 to supply the generated DC voltage to the distribution board 300.

Next, the third sealing material 460 is stacked on top of the solar cell module 450. Specifically, the third sealing material 460 is located between the solar cell module 450 and the tempered glass 470. The third sealing member 460 blocks foreign substances such as moisture, air, and dust from entering from the outside. The third sealant 460 shields the solar cell module 450 from external impact by blocking the electrical flow between the solar cell module 450 and the tempered glass 470. At this time, the third sealing material 460 may be formed using a polyolefin elastomer.

Next, the tempered glass 470 is stacked on top of the third sealing material 460. [ Specifically, the tempered glass 470 is located at the top of the solar module 400. The tempered glass 470 blocks foreign substances from the outside and prevents the solar cell module 450 and the heat generating sheet from being damaged by an external impact. At this time, the tempered glass 470 may be formed of a transparent material so that sunlight can be transmitted and reach the solar cell module 450.

Next, the inverter (Inverter) 500 receives the DC voltage generated by the solar module 400 from the distribution board 300 and transforms it into an AC voltage. The inverter 500 receives the AC voltage from the transformer 600 and supplies the AC voltage to the distribution board 300. At this time, the AC voltage is supplied to the solar module 400 and used to remove the snow on the top of the solar module 400.

The transformer 600 converts the magnitude of the AC voltage by receiving the transformed AC voltage from the inverter 500. Here, the magnitude converted AC voltage can be supplied to the power system. Further, the transformer 600 can supply the inverter 500 with the converted AC voltage of a magnitude. At this time, the AC voltage supplied to the inverter 500 is supplied to the solar module 400 and used to remove the snow on the top of the solar module 400.

Next, a solar power generation method using a solar power generation system according to an embodiment of the present invention will be described with reference to FIG. FIG. 5 is a flowchart illustrating a solar power generation method according to an embodiment of the present invention.

As shown in FIG. 5, the sensing module 100 senses the amount of snow and solar radiation of the solar module 400 (S505). Then, the sensing module 100 transmits the sensed snowfall amount and the solar radiation amount to the control panel 200 (S510).

Next, the control panel 200 determines whether the current time is included in the snow removal operation time (S515). Then, the control panel 200 determines whether the sensed snowfall amount is greater than a predetermined first threshold value (S520). Then, the control panel 200 determines whether the sensed amount of solar radiation is greater than a predetermined second threshold (S525).

Next, if the current time is included in the snow removal operation time, the sensed snowfall amount is equal to or greater than a preset first threshold value, and the sensed amount of solar radiation is greater than or equal to a preset second threshold value, (S530). The control signal is a control signal for controlling the AC voltage to be supplied to the heating film 430 of the solar module 400 according to the embodiment of the present invention.

On the other hand, if the current time is not included in the snow removal operation time, or if the sensed snowfall amount is smaller than the preset first threshold value or the sensed amount of solar radiation is smaller than the predetermined second threshold value, (S535). In this case, the heating control signal for controlling the supply of the AC voltage to the heating film 430 of the solar module 400 is interrupted.

For example, it is assumed that the sensed snowfall amount is greater than a predetermined first threshold value, and that the sensed solar radiation amount is larger than a predetermined second threshold value, but the current time is not included in the snow removal time. Then, the control panel 200 generates a snow removal control signal for controlling the supply of the AC voltage to the heating film 430 of the solar module 400.

Next, the control panel 200 transmits the generated snow removal control signal to the distribution board 300 (S540).

Then, the distribution board 300 controls the switch to be turned on or off according to the control signal to supply or block the AC voltage to the heating film 430 (S545, S550).

Specifically, the panel 300 may receive a snow removal control signal to control the heating film 430 to be supplied with an AC voltage. Then, the distribution board 300 turns on the first switch to receive the AC voltage generated by the transformer 600 from the transformer 600. [ The distribution board 300 supplies the AC voltage received from the transformer 600 to the heat generating film 430. On the other hand, the distribution board 300 can receive a snow removal control signal for controlling the supply of AC voltage to the heat generating film 430. Then, the control panel 200 can turn off the first switch to cut off the supply of the alternating voltage to the heating film 430.

In addition, the distribution board 300 may receive a snow removal control signal for controlling the heating film 430 to be supplied with an alternating voltage. Then, the distribution board 300 turns on the second switch to receive the AC voltage generated by the transformer 600 from the inverter 500. The distribution board 300 supplies the AC voltage received from the inverter 500 to the solar module 400. On the other hand, the distribution board 300 can receive a snow removal control signal for controlling the supply of AC voltage to the heat generating film 430. Then, the control panel 200 can turn off the second switch to cut off the supply of the alternating voltage to the heating film 430.

Then, the photovoltaic module 400 can remove the snow or stop the snow removal by interrupting the supply or cutoff of the AC voltage (S555).

Meanwhile, according to the embodiment of the present invention, the control panel 200 can generate a power generation control signal for controlling the power generation of the solar module 400 while generating the snow removal control signal. Then, the distribution board 300 turns on the third switch according to the power generation control signal to supply the DC voltage generated from the solar module 400 to the inverter 500, The power generation of the solar module 400 can be stopped.

For example, when a snow removal control signal for supplying an AC voltage to the heat generating film 430 is generated, the control panel 200 can generate a power generation control signal for stopping the power generation of the solar module 400. Then, the distribution panel 300 may turn off the third switch according to the power generation control signal to stop the power generation of the solar module 400.

On the contrary, when the snow removing control signal for interrupting the supply of the AC voltage to the heat generating film 430 is generated, the control panel 200 can generate the power generation control signal for activating the solar module 400. Then, the distribution board 300 turns on the third switch according to the power generation control signal to supply the DC voltage generated in the solar module 400 to the inverter 500 by receiving the DC voltage from the solar module 400.

As described above, according to the embodiment of the present invention, it is possible to determine whether or not to remove snow from the solar module in consideration of the snow removal time, the snowfall amount, and the solar radiation amount. In particular, it is possible to reduce unnecessary power consumption by stopping snow removal between sunrise time and sunrise time without solar radiation, and to compare the power consumed for snow removal and the generated power at the top of the solar module, The power efficiency can be improved. In addition, the power efficiency can be improved by considering the relation between the power used for snow removal and the generated power after snow removal through the irradiation amount to determine the snow removal.

In addition, the heat generating film of the carbon material according to the embodiment of the present invention can maintain the durability of the module during the snow removal operation because there is no melting phenomenon in which the solid material absorbs energy and changes into a liquid state. In addition, a heat generating film formed using a carbon material has a weight less than that of a metal, minimizing a mechanical load applied to a mounting structure of a solar cell module, and has advantages of high elasticity and strength and high durability. In particular, since the heat generating film of the carbon material according to the embodiment of the present invention has a high thermal conductivity, it has a high ability to discharge the heat of the solar module to the outside during solar power generation, thereby suppressing the temperature rise of the solar module .

Next, the sealing material of the solar module according to the embodiment of the present invention is formed using the polyolefin elastomer material, thereby improving the durability of the solar module and improving the electrical stability of the heating film and the back sheet through high insulation performance There are advantages to be able to.

According to the embodiment of the present invention, since the power used for snow removal can be supplied in the direction of the transformer, the inverter, the distributing box, and the solar module, it is unnecessary to install a separate transmission line connected from the transformer to the distribution board. System construction is easy.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

100: sensing module 200: control panel
210: determination unit 220:
300: Distribution board 310: First switch unit
320: second switch unit 330: third switch unit
400: solar module 410: back sheet
420: first sealing material 430: exothermic film
440: second sealing material 450: solar cell module
460: Third sealing material 470: Tempered glass
500: inverter 600: transformer

Claims (14)

A solar cell module including a heat generating film made of carbon material which generates heat by receiving a voltage and absorbs solar light to generate a DC voltage,
A sensing module for sensing a snowfall amount and a solar radiation amount of the solar module,
Comparing the sensed snowfall amount and the solar radiation amount with respective predetermined threshold values, comparing the current time with a predetermined snowing running time, and controlling the supply of the AC voltage to the heating film or cutting off the supply of the heating film according to the comparison result A control panel for generating a control signal, and
And a distribution panel connected to the solar module and controlling the supply of the AC voltage or the supply of the AC voltage to the heating film by turning the switch on or off according to the control signal,
The control panel,
Determining whether or not the current time is included in the snow removal operation time, determining whether the sensed snowfall amount is greater than a predetermined first threshold value, and determining whether the sensed amount of solar radiation is greater than a predetermined second threshold value Wealth, and
If it is determined that the current time is included in the snow removal operation time and the sensed snowfall amount is equal to or greater than a predetermined first threshold value and the sensed solar radiation amount is greater than or equal to a predetermined second threshold value, And if the current time is not included in the snow removal time or the sensed snowfall amount is less than a predetermined first threshold value or the sensed amount of solar radiation is smaller than a preset second threshold value, And a signal generating section for generating a snow removal control signal for controlling the supply of the AC voltage to the film to be cut off,
The distribution board,
A transformer and a heating film are connected to each other through a first switch, an AC voltage generated in the transformer is supplied to the heating film from the transformer when the transformer is turned on, 1 switch section,
And an AC voltage generated in a transformer connected to the inverter when the inverter is turned on is received from the inverter and supplied to the heating film. And a second switch unit for shutting down the solar cell.
The method according to claim 1,
In the solar module,
A first sealing material stacked on top of a backsheet,
A heating film of the carbon material laminated on the upper side of the first sealing material,
A second sealing material laminated on top of the heating film,
A solar cell module stacked on top of the second sealing material,
A third sealing material stacked on top of the solar cell module, and
And a snow removing function including tempered glass laminated on top of the third sealing material.
3. The method of claim 2,
Wherein the first to third sealing members
A photovoltaic power generation system having a snow removal function formed using a polyolefin elastomer.
delete delete delete The method according to claim 1,
The control panel,
Generating a power generation control signal for controlling whether or not the solar module is generated,
The distribution board,
A DC voltage generated in the solar module is supplied from the solar module to the inverter in accordance with the power generation control signal, And a third switch unit for stopping the power generation of the photovoltaic module when the photovoltaic module is turned off.
In a solar power generation method using a solar power generation system,
Sensing a snowfall amount and a solar radiation amount of a solar module including a heat generating film of carbon material which generates heat by receiving a voltage,
Comparing the sensed snowfall amount and the insolation amount with predetermined threshold values and comparing the current time with a predetermined snow removal time,
Generating a snow removal control signal for controlling the supply of the alternating voltage to the heating film or cutting off the supply of the heating film according to the comparison result; and
Controlling the switch to turn on or turn off according to the control signal to supply or block the AC voltage to the heating film,
Wherein the comparing the current time with a predetermined snow removal time comprises:
Determining whether or not the current time is included in the snow removal operation time, determining whether the sensed snowfall amount is greater than a predetermined first threshold value, determining whether the sensed amount of solar radiation is greater than a predetermined second threshold value,
Wherein the step of generating the snow removal control signal comprises:
If it is determined that the current time is included in the snow removal operation time and the sensed snowfall amount is equal to or greater than a predetermined first threshold value and the sensed solar radiation amount is greater than or equal to a predetermined second threshold value, A snow removal control signal for controlling the supply of snow,
If the current time is not included in the snow removal operation time, or if the sensed snowfall amount is smaller than a preset first threshold value or the sensed amount of solar radiation is smaller than a predetermined second threshold value, Generates a snow removal control signal,
The step of controlling the supply of the AC voltage or blocking the supply of the AC voltage includes:
The AC voltage generated in the transformer when the first switch is turned on is received from the transformer and is supplied to the heating film, the supply of the AC voltage is cut off when the first switch is turned off,
And a snow removing function for receiving the AC voltage generated in the transformer when the second switch is turned on from the inverter, supplying the AC voltage to the solar module, and cutting off the supply of the AC voltage when the second switch is turned off.
9. The method of claim 8,
In the solar module,
A first sealing material stacked on top of a backsheet,
A heating film of the carbon material laminated on the upper side of the first sealing material,
A second sealing material laminated on top of the heating film,
A solar cell module stacked on top of the second sealing material,
A third sealing material stacked on top of the solar cell module, and
And a snow removing function including tempered glass laminated on top of the third sealing material.
10. The method of claim 9,
Wherein the first to third sealing members
A solar power generation method comprising a snow removing function formed by using a polyolefin elastomer.
delete delete delete 9. The method of claim 8,
The step of controlling the supply of the AC voltage or blocking the supply of the AC voltage includes:
Generating a power generation control signal for controlling whether or not the solar module is generated, and
A DC voltage generated in the photovoltaic module is supplied from the photovoltaic module to the inverter when the third switch is turned on according to the power generation control signal, and the power generation of the photovoltaic module is stopped when the third switch is turned off Further comprising the step of:
KR1020160041739A 2016-04-05 2016-04-05 Photocoltaics system with snow removal function and photocoltaics method using the same KR101819328B1 (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101020751B1 (en) * 2010-06-10 2011-03-09 주식회사 에스에너지 Snow removal apparatus for photovoltaic system
JP2015082611A (en) * 2013-10-23 2015-04-27 三菱化学株式会社 Snow-melting sheet with integrated solar cell and method for installing snow-melting sheet with integrated solar cell

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101020751B1 (en) * 2010-06-10 2011-03-09 주식회사 에스에너지 Snow removal apparatus for photovoltaic system
JP2015082611A (en) * 2013-10-23 2015-04-27 三菱化学株式会社 Snow-melting sheet with integrated solar cell and method for installing snow-melting sheet with integrated solar cell

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