WO2012018154A1 - Équipement d'optimisation de rendement pour un système de production d'énergie électrique solaire à poursuite - Google Patents

Équipement d'optimisation de rendement pour un système de production d'énergie électrique solaire à poursuite Download PDF

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Publication number
WO2012018154A1
WO2012018154A1 PCT/KR2010/006432 KR2010006432W WO2012018154A1 WO 2012018154 A1 WO2012018154 A1 WO 2012018154A1 KR 2010006432 W KR2010006432 W KR 2010006432W WO 2012018154 A1 WO2012018154 A1 WO 2012018154A1
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WO
WIPO (PCT)
Prior art keywords
cooling water
power generation
coolant
efficiency
equipment
Prior art date
Application number
PCT/KR2010/006432
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English (en)
Korean (ko)
Inventor
유상필
Original Assignee
(주)하이레벤
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by (주)하이레벤 filed Critical (주)하이레벤
Publication of WO2012018154A1 publication Critical patent/WO2012018154A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor 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
    • H01L31/04—Semiconductor 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
    • H01L31/052—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells
    • H01L31/0521—Cooling means directly associated or integrated with the PV cell, e.g. integrated Peltier elements for active cooling or heat sinks directly associated with the PV cells using a gaseous or a liquid coolant, e.g. air flow ventilation, water circulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S50/00—Arrangements for controlling solar heat collectors
    • F24S50/20—Arrangements for controlling solar heat collectors for tracking
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S30/00—Arrangements for moving or orienting solar heat collector modules
    • F24S30/40—Arrangements for moving or orienting solar heat collector modules for rotary movement
    • F24S30/45—Arrangements for moving or orienting solar heat collector modules for rotary movement with two rotation axes
    • F24S30/452—Vertical primary axis
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers
    • Y02E10/47—Mountings or tracking
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present invention relates to a tracking device for improving efficiency of a photovoltaic power generation system, and more particularly, to a tracking type that can minimize the loss of cooling water by adjusting the cooling water injection speed of the cooling water injection means according to the inclination angle of the solar module.
  • the present invention relates to a facility for improving efficiency of photovoltaic power generation facilities.
  • the method of using solar energy is largely divided into a method using solar heat and a method using solar light.
  • the method of using solar heat is to heat and generate electricity using water heated by the sun, and the method of using solar light can generate electricity by using the light of the sun to operate various machines and appliances. It is called solar power.
  • a solar cell for condensing sunlight a photovoltaic module that is an assembly of solar cells, and a solar array in which the solar cells are constantly arranged are required.
  • EHP electron-hole pair
  • sunlight is a clean energy source without the risks of greenhouse gas emissions, noise, and environmental degradation that cause global warming, and there is no fear of exhaustion.
  • solar power plants have the advantage of free installation and low maintenance costs.
  • the photovoltaic module has a disadvantage that dirt may easily accumulate on the solar panel due to meteorological phenomena such as yellow sand and bad weather. If dirt accumulates on the photovoltaic module, the light absorption rate of the photovoltaic module is significantly reduced, and thus the power generation efficiency may also be reduced.
  • a photovoltaic power plant maintenance device is used.
  • Photovoltaic power generation equipment efficiency improvement equipment performs constant power generation by photovoltaic module cooling by cooling the temperature of photovoltaic module and washing and snow removing dirt, snow and rain accumulated on solar panel. It functions to maintain and maintain photovoltaic power generation facilities.
  • cooling water cooling water, washing water, snow removal water, etc.
  • groundwater, tap water, and river water are used as cooling water.
  • electricity used for supplying and spraying cooling water also reduces the efficiency of the photovoltaic plant as a whole. Efficient use of cooling water is one of the most important factors in the design of PV plant maintenance.
  • the present invention has been invented to solve this problem, in consideration of the fact that the inclination angle of the photovoltaic module is changed according to the daily altitude of the sun in the tracking photovoltaic power generation equipment, is injected from the coolant injection means. It is an object of the present invention to provide an efficiency improving facility of a tracked photovoltaic power generation facility that can eliminate the loss of cooling water by controlling the spraying speed of the cooling water to prevent the cooling water from being injected out of the solar module.
  • the present invention in the efficiency improvement equipment of the trace-type photovoltaic power generation equipment to maintain or improve the efficiency by spraying the cooling water to the solar module that collects sunlight to generate electricity, storing the cooling water Storage tanks; Coolant spray means for spraying the coolant to the solar module, the spraying speed of the coolant according to the inclination angle of the solar module; A pump for pumping the cooling water stored in the storage tank and supplying the cooling water to the cooling water injection means through a cooling water supply pipe; A valve for opening and closing the cooling water supply pipe to control cooling water injection of the cooling water injection means; And a control unit controlling the driving of the pump and the opening and closing of the valve to control the cooling water injection of the cooling water injection means.
  • the efficiency improvement facility of the tracking photovoltaic power generation facility may adjust the cooling water injection speed of the cooling water injection means by using a variable regulator.
  • the efficiency improving equipment of the tracking photovoltaic power generation equipment may change the motor rotation speed of the pump to adjust the cooling water injection speed of the cooling water injection means.
  • the efficiency improvement equipment of the tracer photovoltaic power generation facility may adjust the cooling water injection speed of the cooling water injection means by changing the opening and closing area of the cooling water supply pipe.
  • the cooling water injection means may be installed at one end of the solar module.
  • the efficiency improvement system of the tracking photovoltaic power generation facility further includes a sensing unit for sensing an inclination angle of the solar module, an inclination angle of the coolant injection means, or an altitude of the sun, according to the sensing result of the sensing unit.
  • the injection speed of the injection means can be adjusted.
  • the controller may stop the injection of the coolant when it is determined that it is raining by determining whether the rain sensor is on or off.
  • the controller may continuously spray the coolant when the light transmittance of the solar module is less than a set value.
  • the efficiency improvement facility of the tracked photovoltaic power generation facility may measure the water pressure in the cooling water supply pipe and terminate the start if the measured water pressure is less than the set minimum pressure or exceeds the maximum pressure.
  • the coolant spray means sprays a collision jet of coolant onto the solar module.
  • the coolant sprayed from the coolant spray means to the solar module has a flow rate of 30 m / s based on the inlet of the coolant spray means. It is above and it is preferable that a pressure is 1.6 kg / cm ⁇ 2> or more.
  • the efficiency improving apparatus of the solar power plant in consideration of the fact that the inclination angle of the photovoltaic module changes according to the daily altitude of the sun in the tracking solar power plant, By controlling the spraying speed to be sprayed to prevent the coolant is sprayed out of the photovoltaic module to minimize the loss of the coolant, to evenly distribute the coolant to the front of the photovoltaic module can further improve the efficiency of the solar module.
  • FIG. 1 is a view showing the efficiency improvement equipment of the tracking photovoltaic power generation equipment according to an embodiment of the present invention.
  • FIG. 2 is a schematic view for explaining a process in which cooling water is consumed according to a change in an inclination angle of a photovoltaic module in an efficiency improving apparatus of a tracking photovoltaic power generation facility.
  • FIG. 3 is a schematic diagram illustrating a process of preventing the consumption of cooling water by applying the cooling water injection method of the present invention.
  • FIG. 1 is a view showing the efficiency improvement equipment of the tracking photovoltaic power generation equipment according to an embodiment of the present invention.
  • Figure 2 is a schematic diagram for explaining the process of the cooling water consumption according to the change in the inclination angle of the photovoltaic module in the efficiency improvement equipment of the tracking photovoltaic power generation equipment
  • Figure 3 is applied to the cooling water injection method of the present invention It is a schematic diagram for explaining a process of preventing the consumption of cooling water. 2 and 3 illustrate the injection position of the coolant divided into am, noon, and pm for convenience of explanation.
  • solar modules 7 are listed, and efficiency improving facilities are installed as facilities for maintaining and managing these solar modules 7.
  • the photovoltaic module 7 is an assembly of a plurality of solar cells. When light enters the photovoltaic module 7 from the outside, the photovoltaic module 7 is housed by the light energy in which electrons of the conduction band of the p-type semiconductor are incident. The excited electrons are excited in a valence band, and the excited electrons form an electron hole pair (EHP) inside the p-type semiconductor, and the electrons in the electron-hole pair thus generated are interposed between the pn junctions. The existing electric field (electron field) is transferred to the n-type semiconductor to supply the current to the outside.
  • EHP electron hole pair
  • the present invention relates to a facility that can maintain and improve the efficiency of photovoltaic power generation by removing factors that lower the efficiency of photovoltaic power generation facilities by cooling, washing, and snow removing the photovoltaic module (7).
  • the tracked photovoltaic power generation facility also has an inclination angle (tilt) of the photovoltaic module 7 according to the change in the daily altitude of the sun in order to improve the condensing efficiency of the photovoltaic module 7.
  • the cooling water injection means 6 is typically located at one end of the solar module 7 to inject the cooling water toward the solar module 7. Therefore, as the inclination angle of the photovoltaic module 7 changes, the direction of cooling water is gradually changed when viewed based on the direction of gravity. Done. As a result, as the direction in which the coolant is injected from the coolant jetting means 6 and the gravity direction become more similar, more coolant injected outside the solar module may be generated. The more the flight, the larger the area where the coolant does not reach the other end of the solar module (7).
  • the 'spraying speed' refers to the speed at which the coolant is injected based on the inlet of the coolant spraying means 6, and the 'inlet' of the coolant spraying means 6 means the coolant spraying means 6 in which the coolant is sprayed to the outside.
  • end is used to mean the same throughout this specification.
  • the present invention considers that the inclination angle of the photovoltaic module 7 changes with time in the tracked photovoltaic power generation facility, thereby controlling the loss of the cooling water by adjusting the injection speed of the cooling water injected from the cooling water injection means 6. To prevent and allow the coolant to be evenly sprayed on the solar module 7.
  • the efficiency improvement facility of the tracer photovoltaic power generation facility includes a storage tank 1, a coolant injection means 6, a coolant supply pipe 5, a pump 25, a valve 20, and a control unit ( 3) and the sensing unit 4.
  • Cooling water injection means (6) is installed to correspond to each of the solar modules (7) is a means for injecting the coolant to spray the coolant to the solar module (7).
  • the coolant spray means 6 is designed to correspond to the solar module 7 in a one-to-one manner, but considering the area of the solar module 7 and the sprayed area of the coolant spray means 6, Two or more solar modules 7 may correspond to one coolant injection means 6, or one solar module 7 may correspond to two or more coolant injection means 6.
  • the cooling water injection means 6 flows or weakly sprays the cooling water into the solar module 7, it is difficult to obtain a sufficient cooling and cleaning effect.
  • the collision jet of the cooling water is injected into the solar module 7. Do it.
  • the impingement jet has excellent heat and material transfer effects from the fluid to the impingement surface, thereby improving the cooling and cleaning effects.
  • the spraying speed of the cooling water is preferably 30 m / s or more and the pressure is 1.6 kg / cm 2 or more.
  • the cooling water spraying means 6 is fixed so that the cooling water is evenly sprayed on the front surface of the solar module 7 while reciprocating left and right, instead of spraying the cooling water only in one direction.
  • cooling water injection means 6 is fixed to spray the cooling water to the front of the photovoltaic module 7, the amount of water that can be used is limited, so the water pressure is not easy to generate a collision jet on the front of the photovoltaic module.
  • spraying the coolant only on a part of the photovoltaic module 7 may increase the water pressure of the coolant to easily generate a collision jet. Cooling and cleaning efficiency can be improved.
  • the injection speed of the coolant injected from the coolant injection means 6 changes according to the inclination angle of the solar module, and more specifically, the direction of the coolant injected from the coolant injection means 6 becomes closer to the direction of gravity. The lower the injection speed, the higher the injection speed as it moves away from the direction of gravity.
  • the injection direction of the coolant is increased in the morning to increase the injection speed because it is different from the gravity direction, and in the afternoon, the injection direction of the coolant is directed downward, so that the injection speed is lowered to decrease the injection speed.
  • FIG. 3 for convenience of description, three time points of morning, noon, and afternoon are shown. However, since the inclination of the solar module 7 gradually changes from morning to evening, the spraying speed of the coolant injection means 6 is gradually reduced. do. In this way, the cooling water can be prevented from being sprayed out of the solar module 7, and the cooling water can be evenly sprayed on the front surface of the solar module 7.
  • the method of adjusting the injection speed of the cooling water injected from the cooling water injection means 6 is not particularly limited and general injection water pressure adjusting methods may be used. Typically, a method using a variable regulator and a method of adjusting the motor rotational speed of the pump 25 by changing the current or voltage, a method of adjusting the opening and closing area of the cooling water supply pipe 5 by adjusting the opening and closing degree of the valve, etc. Can be used.
  • the injection speed of the coolant may be adjusted according to the inclination of the photovoltaic module 7 measured by the sensing unit (4).
  • the sensing unit 4 may measure the altitude of the sun and adjust the spraying speed of the coolant according to the measured altitude of the sun.
  • the measurement result of the sensing device for the altitude of the sun installed in the photovoltaic facility for the rotation of the photovoltaic module 7 may be utilized without having a separate sensing unit 4.
  • the sensing unit 4 causes the inclination of the coolant injection means 6 to be measured, and according to the measurement result.
  • the injection speed of the cooling water injection means 6 can also be adjusted.
  • the cooling water supply pipe 5 serves to deliver the cooling water supplied from the storage tank 1 to the injection means 6 through the pump 25.
  • the cooling water supply pipe 5 is preferably embedded in the ground to maintain the temperature of the cooling water.
  • the pump 25 pumps the cooling water stored in the storage tank 1 to supply the cooling water to the cooling water injection means 6 through the cooling water supply pipe 5, and the valve 20 opens and closes the cooling water supply pipe 5 to spray the cooling water.
  • the means 6 controls the cooling water injection.
  • the control unit 3 is a part for controlling the cooling water injection of the cooling water injection means 6 by adjusting the pump 25 and the valve 20, driving or stopping the pump 25, and opening or closing the valve 20. Let's do it.
  • the controller 3 can stop the injection of the cooling water to prevent unnecessary consumption of the cooling water.
  • the controller 3 can stop the injection of the cooling water to prevent unnecessary consumption of the cooling water.
  • the snow can be removed quickly when the snow module 7 is snow.
  • control unit 3 measures the pressure in the cooling water supply pipe 5 and terminates the start of the efficiency improving equipment when the pressure is out of the predetermined pressure range. If the measured pressure exceeds the maximum value of the set pressure range, a problem such as freezing of the coolant occurs in the coolant supply pipe 5, and if the measured pressure does not reach the minimum value of the set pressure range, the coolant supply pipe Since problems such as leakage occur in (5), this can prevent the failure of the equipment and use the cooling water more efficiently.
  • the controller 3 receives various sensing information from the sensing unit 4 to control the driving of the pump 25 and the opening and closing of the valve 20 as described above.
  • the sensing unit 4 may include a timer 41, a pressure sensor 42, a rain sensor 43, a light transmittance measuring sensor 44, and the like.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Photovoltaic Devices (AREA)

Abstract

La présente invention concerne un équipement d'optimisation de rendement pour un système de production d'énergie électrique solaire à poursuite. L'équipement de la présente invention, qui maintient ou optimise le rendement en pulvérisant d'eau de refroidissement sur un module concentrateur solaire de production d'électricité, comprend un réservoir de stockage pour stocker de l'eau de refroidissement, un moyen de pulvérisation d'eau de refroidissement qui pulvérise l'eau de refroidissement sur le module concentrateur solaire tout en réglant une vitesse à laquelle l'eau de refroidissement est pulvérisée selon l'angle du module, une pompe qui pompe l'eau de refroidissement stockée dans le réservoir de stockage afin de fournir l'eau de refroidissement au moyen de pulvérisation d'eau de refroidissement par l'intermédiaire d'un tuyau d'alimentation en eau de refroidissement, un robinet qui ouvre ou ferme le tuyau d'alimentation en eau de refroidissement pour commander l'eau de refroidissement pulvérisée par le moyen de pulvérisation d'eau de refroidissement, et une partie de commande qui règle le fonctionnement de la pompe et l'ouverture et la fermeture du robinet afin de commander l'eau de refroidissement pulvérisée par le moyen de pulvérisation d'eau de refroidissement.
PCT/KR2010/006432 2010-08-03 2010-09-17 Équipement d'optimisation de rendement pour un système de production d'énergie électrique solaire à poursuite WO2012018154A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020100074948A KR101107623B1 (ko) 2010-08-03 2010-08-03 추적식 태양광 발전설비의 효율향상설비
KR10-2010-0074948 2010-08-03

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WO2012018154A1 true WO2012018154A1 (fr) 2012-02-09

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TR202021031U4 (tr) * 2020-08-18 2022-03-21 Yazici Furkan Akilli güneş si̇stemi̇
KR102594325B1 (ko) 2022-09-13 2023-10-26 주식회사 케이엘테크놀로지 태양광 발전설비 보호 시스템

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060095903A (ko) * 2005-12-20 2006-09-05 이찬재 태양광 발전기 냉각 시스템
KR20090071895A (ko) * 2007-12-28 2009-07-02 이찬재 태양광 발전기 세척 및 냉각 시스템
KR20090010835U (ko) * 2008-04-21 2009-10-26 이성수 발전효율 개선을 위한 추적식 태양광 발전시스템의 수냉식온도조절 장치
KR20100020346A (ko) * 2008-08-12 2010-02-22 주식회사 쏠라크리너 태양광 발전설비의 냉각장치

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Publication number Priority date Publication date Assignee Title
JP3365240B2 (ja) * 1997-01-14 2003-01-08 トヨタ自動車株式会社 太陽電池装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20060095903A (ko) * 2005-12-20 2006-09-05 이찬재 태양광 발전기 냉각 시스템
KR20090071895A (ko) * 2007-12-28 2009-07-02 이찬재 태양광 발전기 세척 및 냉각 시스템
KR20090010835U (ko) * 2008-04-21 2009-10-26 이성수 발전효율 개선을 위한 추적식 태양광 발전시스템의 수냉식온도조절 장치
KR20100020346A (ko) * 2008-08-12 2010-02-22 주식회사 쏠라크리너 태양광 발전설비의 냉각장치

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