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WO2018153233A1 - Système de génération d'énergie solaire concentrée et procédé de génération d'énergie - Google Patents

Système de génération d'énergie solaire concentrée et procédé de génération d'énergie Download PDF

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Publication number
WO2018153233A1
WO2018153233A1 PCT/CN2018/075005 CN2018075005W WO2018153233A1 WO 2018153233 A1 WO2018153233 A1 WO 2018153233A1 CN 2018075005 W CN2018075005 W CN 2018075005W WO 2018153233 A1 WO2018153233 A1 WO 2018153233A1
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WIPO (PCT)
Prior art keywords
concentrating
power generation
angle
sunshine
wind speed
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2018/075005
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English (en)
Chinese (zh)
Inventor
蔡浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Arctech Solar Holding Co Ltd
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Arctech Solar Holding Co Ltd
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 Arctech Solar Holding Co Ltd filed Critical Arctech Solar Holding Co Ltd
Publication of WO2018153233A1 publication Critical patent/WO2018153233A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • 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
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
    • H02S10/10—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power including a supplementary source of electric power, e.g. hybrid diesel-PV energy systems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S20/00—Supporting structures for PV modules
    • H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
    • H02S20/32—Supporting structures being movable or adjustable, e.g. for angle adjustment specially adapted for solar tracking
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20—Optical components
    • H02S40/22—Light-reflecting or light-concentrating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S23/00—Arrangements for concentrating solar-rays for solar heat collectors
    • F24S23/70—Arrangements for concentrating solar-rays for solar heat collectors with reflectors
    • F24S2023/87—Reflectors layout
    • 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
    • Y02E10/52—PV systems with concentrators

Definitions

  • the invention relates to the field of concentrating power generation technology, in particular to a concentrating photothermal power generation system and a power generation method.
  • the existing large-scale tower-type concentrating solar thermal power station due to changes in sunshine resources, can reach 1000W/m ⁇ 2 in clear skies and only 400-600W/m ⁇ 2 in cloudy days.
  • the concentrating light-receiving tower with three times or more is usually able to withstand Heliostats to cope with the low-irradiation environment, the concentrating light-receiving tower can still maintain high light-to-heat conversion efficiency.
  • the concentrating-light-receiving tower will burn out beyond its load carrying capacity.
  • the working temperature of the concentrating light receiving tower is relatively high (up to 800-1000 ° C), and the annual power generation efficiency can reach 17% -20%.
  • part of the heliostats will be kept inoperative to ensure efficient operation of the concentrating light-receiving tower. Therefore, in a high-irradiation environment, the heliostat that does not work has a great waste of resources.
  • the Applicant is directed to providing a novel concentrating solar thermal power generation system and a power generation method.
  • the object of the present invention is to provide a concentrating photothermal power generation system and a power generation method, which can effectively improve the utilization rate of heliostats in a concentrating solar thermal power station under the premise of ensuring the power generation efficiency of the concentrating solar thermal power station.
  • the present invention provides a concentrating photothermal power generation system, comprising a concentrating photothermal receiving tower and a plurality of heliostats, further comprising: a concentrating photovoltaic receiving device; a sunshine obtaining module, the obtaining module For determining the actual sunshine value;
  • the heliostat includes: a tracker bracket; a mirror fixedly disposed on the tracker bracket; and a sunshine judgment module, which is in communication with the sunshine acquisition module, configured to determine the actual Whether the sunshine value is greater than the preset sunshine value;
  • the controller is connected to the tracker bracket and is in communication with the sunshine determination module, and is configured to adjust an angle of the tracker bracket according to the determination result of the sunshine determination module.
  • the controller adjusts an angle of the tracker bracket such that an angle of the mirror corresponds to the concentrating photovoltaic receiving device
  • the controller adjusts an angle of the tracker bracket such that an angle of the mirror corresponds to the light collection tower.
  • the concentrating solar thermal power generation system further includes: a wind speed acquiring module, configured to acquire an actual wind speed; and a wind speed determining module, configured to communicate with the wind speed acquiring module, configured to determine whether the actual wind speed obtained by the wind speed acquiring module is
  • the heliostat further includes an angle fine adjustment device, and the angle fine adjustment device is in communication with the wind speed determination module, and is configured to adjust a position of the tracker bracket according to the determination result of the wind speed determination module.
  • the angle fine adjustment device comprises: an angle sensor connected to the tracker bracket for acquiring an attitude trajectory of the tracker bracket; and a PID controller respectively connected to the angle sensor and the controller for use An angle adjustment command is obtained according to the attitude trajectory and sent to the controller.
  • the concentrating photovoltaic receiving device is the same height as the concentrating light receiving tower and has a spacing therebetween.
  • the concentrating photovoltaic receiving device is distributed around a top end of the concentrating light receiving tower, and the concentrating photovoltaic receiving device is symmetrically distributed around a top end of the concentrating photothermal receiving tower; or The concentrating photovoltaic receiving device is disposed side by side with the concentrating heat receiving tower.
  • the concentrating photovoltaic receiving device comprises an array of photoelectric conversion devices and a heat dissipating device, the photoelectric conversion device being a multi-junction III-V cell sheet, the heat dissipating device comprising an active heat sink and/or a passive heat sink; And/or; the mirror is a plane mirror or a curved mirror; and/or; the mirror is hung on the tracker bracket by a hook; and/or; the tracker bracket is a dual-axis tracker support.
  • a plurality of the heliostats are arranged in a fan array or a circumference in a center of the concentrating heat receiving tower, and each heliostat can adjust its angle to the concentrating heat receiving tower.
  • Corresponding angles; and/or; the concentrating photovoltaic receiving device is connected to the grid through an inverter or connected to ground energy storage equipment for storage.
  • the invention also discloses a concentrating photothermal power generation method, comprising the steps of:
  • the concentrating photothermal power generation method further comprises the steps of:
  • the number of the heliostats is plural, and each of the heliostats is provided with one predetermined sunshine value, so that the power generation efficiency of the concentrating light-receiving tower is maintained at a preset power generation efficiency.
  • the actual sunshine value is 900-1000 W/m ⁇ 2, 50-60% of the heliostat angle corresponds to the concentrating photovoltaic receiving device; the actual sunshine value is 700-900 W/m ⁇ 2, 20-40% of the heliostat angle corresponds to the concentrating photovoltaic receiving device; when the actual sunshine value is 500-700 W/m ⁇ 2, 10-20% of the heliostat The angle corresponds to the concentrating photovoltaic receiving device; when the actual sunshine value is less than 500 W/m ⁇ 2, 100% of the heliostats are projected onto the concentrating light receiving tower.
  • the concentrating solar thermal power generation system and the power generation method of the present invention can achieve at least one of the following advantageous effects.
  • Each heliostat in the concentrating solar thermal power generation system of the present invention can obtain the actual sunshine value through the sunshine acquisition module, and the sunshine judgment module further determines whether the actual sunshine value is greater than the preset sunshine value, and the controller determines the module according to the sunshine.
  • the result of the judgment is to control the rotation of the tracker bracket, so that when the illumination is strong, most of the heliostats reflect the sunlight to the concentrating photovoltaic receiving device, so that all the heliostats reflect the sunlight to the concentrated light. Receiving the tower, causing it to be damaged beyond the load.
  • the illumination is weak, most of the heliostats reflect the sunlight to the concentrating light-receiving tower, thereby ensuring that the power generation efficiency is maintained when the illumination is weak. Therefore, the concentrating photothermal power generation system of the present invention can fully utilize the heliostat regardless of the light intensity, and can also ensure that the concentrating light-receiving tower always maintains a high power generation efficiency.
  • the concentrating solar thermal power generation system of the present invention can also obtain the fine adjustment command of the tracker bracket through the wind speed acquisition module, the wind speed determination module and the heliostat fine adjustment device, so that the heliostat can always be aligned under high wind conditions.
  • the concentrating light receiving tower or the concentrating photovoltaic receiving device ensures the power generation efficiency of the power station, and further enables the concentrating solar thermal power generation system to be applied to an area where the light is sufficient but the sand is large.
  • FIG. 1 is a schematic structural view of a specific embodiment of a concentrating photothermal power generation system of the present invention
  • Fig. 2 is a schematic view showing the structure of another embodiment of the concentrating photovoltaic power generation system of the present invention.
  • Concentrating light receiving tower 1 Concentrating light receiving tower 1, concentrating photovoltaic receiving device 2, heliostat 3, and sun 4.
  • Embodiment 1 discloses a concentrating photothermal power generation system including a concentrating photothermal receiving tower 1 and a plurality of heliostats 3, further comprising: a concentrating photovoltaic receiving device 2; a sunshine obtaining module, and an acquiring module for acquiring the sun The actual sunshine value of 4.
  • the heliostat 3 comprises: a tracker bracket; a mirror fixedly disposed on the tracker bracket; the sunshine judging module is in communication with the sunshine acquisition module, and is configured to determine whether the actual sunshine value is greater than a preset sunshine value; the controller,
  • the utility model is connected to the tracker bracket and is in communication with the sunshine judgment module, and is configured to adjust the angle of the tracker bracket according to the judgment result of the sunshine judgment module.
  • the controller adjusts the angle of the tracker bracket so that the angle of the mirror corresponds to the concentrating photovoltaic receiving device;
  • the controller adjusts the angle of the tracker bracket so that the angle of the mirror corresponds to the concentrating light receiving tower.
  • the power generation efficiency of the concentrating light receiving tower can reach the preset efficiency.
  • the preset efficiency here refers to the desired preset efficiency that the power station can achieve at the concentrating light receiving tower.
  • the specific value can be set according to actual needs.
  • the concentrating solar thermal power generation system further includes: a wind speed obtaining module, configured to obtain an actual wind speed; and a wind speed determining module, configured to communicate with the wind speed acquiring module, configured to determine whether the actual wind speed obtained by the wind speed acquiring module is greater than a preset wind speed value.
  • the heliostat also includes an angle fine adjustment device, and the angle fine adjustment device is in communication with the wind speed determination module, and is configured to adjust the position of the tracker bracket according to the judgment result of the wind speed determination module.
  • the angle fine adjustment device comprises: an angle sensor connected to the tracker bracket for acquiring a posture track of the tracker bracket; and a PID controller respectively connected with the angle sensor and the controller for obtaining an angle adjustment instruction according to the posture track And sent to the controller.
  • the concentrating photovoltaic receiving device 2 is of the same height as the concentrating photothermal receiving tower 1 with a spacing therebetween. In the present embodiment, the concentrating photovoltaic receiving device 2 is distributed around the top end of the concentrating light receiving tower 1, and the concentrating photovoltaic receiving device 2 is symmetrically distributed around the tip end of the concentrating photothermal receiving tower 1.
  • the concentrating photovoltaic receiving device 2 includes an array of photoelectric conversion devices and a heat dissipating device, and the photoelectric conversion device is a multi-junction III-V battery cell, and the heat dissipating device includes an active heat sink or a passive heat sink.
  • the mirror is a flat mirror or a curved mirror. The mirror is hung on the tracker bracket by a hook.
  • the tracker bracket is a two-axis tracker bracket.
  • the plurality of heliostats 3 are arranged in a fan-shaped array centering on the concentrating light-receiving tower 1 , and each of the heliostats 3 can adjust the angle thereof to an angle corresponding to the concentrating-light-receiving tower 1 .
  • the concentrating photovoltaic receiving device 2 is connected to the grid through an inverter or connected to ground energy storage equipment for storage.
  • the concentrating solar thermal power generation system in this embodiment can effectively ensure the power generation efficiency of the power station, and can also fully utilize the heliostat in the power station, thereby avoiding the idle waste of the heliostat.
  • the angle fine adjustment device of the concentrating solar thermal power generation system in windy weather may be set to other forms; the positional relationship between the concentrating photovoltaic receiving device and the concentrating photothermal receiving tower and the date The positional relationship between the mirror and the concentrating photovoltaic receiving device and the concentrating light receiving tower can be adjusted according to actual needs; the specific structural forms of the concentrating photovoltaic receiving device, the mirror and the tracker bracket can be selectively adjusted; The day mirror can also be arranged circumferentially around the concentrating heat receiving tower.
  • Embodiment 2 discloses another specific embodiment of the concentrating solar thermal power generation system, and the structure thereof is basically the same as that in the first embodiment, except that the concentrating photovoltaic receiving device is opposite to the concentrating photothermal receiving tower. The arrangement position is different. In the present embodiment, the concentrating photovoltaic receiving device 2 and the concentrating light receiving tower 1 are arranged side by side.
  • the relative arrangement of the concentrating photovoltaic receiving device and the concentrating photothermal receiving tower can also be adjusted according to actual needs.
  • This embodiment discloses a concentrating photothermal power generation method, including the steps of:
  • a plurality of heliostats are provided, and each of the heliostats is correspondingly provided with one preset sunshine value, and the angles of all the heliostats are adjusted according to steps S10-S40.
  • the power generation efficiency of the concentrating light receiving tower can reach the preset power generation efficiency.
  • the angle of 50-60% of the heliostat corresponds to the concentrating photovoltaic receiving device; when the actual sunshine value is 700-900 W/m ⁇ 2, 20-40 The angle of % heliostat corresponds to the concentrating photovoltaic receiver; when the actual sunshine value is 500-700W/m ⁇ 2, the angle of 10-20% heliostat corresponds to the concentrating photovoltaic receiver; the actual sunshine value is less than At 500 W/m ⁇ 2, 100% of the heliostats are projected onto the concentrating light receiving tower.
  • the correspondence between the actual illumination and the adjustment angle of the heliostat can also be adjusted according to actual needs.
  • Embodiment 4 discloses another specific embodiment of the concentrating photothermal power generation method, the steps of which are basically the same as those in the first embodiment, except that in the embodiment, the concentrating photothermal power generation method is further Including steps:
  • the concentrating photothermal power generation method in the embodiment can effectively ensure that the heliostat can always be aligned with the concentrating photovoltaic receiving device or the concentrating photothermal receiving tower under windy weather, thereby avoiding high wind conditions.
  • the power generation efficiency of the power station is reduced, so that the power generation method can be applied to an area where the light is sufficient but the sand is large.

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Physics & Mathematics (AREA)
  • Sustainable Energy (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Photovoltaic Devices (AREA)

Abstract

Cette invention concerne un système de génération d'énergie solaire concentrée et un procédé de génération d'énergie. Le système de génération d'énergie solaire concentrée comprend une tour de réception de production d'énergie solaire concentrée (1), un dispositif de réception photovoltaïque de concentration (2), une pluralité d'héliostats (3) et un module d'acquisition d'insolation. Le module d'acquisition est utilisé pour acquérir l'insolation réelle. L'héliostat (3) comprend : un support de dispositif de poursuite ; un réflecteur disposé de manière fixe sur le support de dispositif de poursuite ; un module de détermination d'insolation connecté au module d'acquisition d'insolation et communiquant avec celui-ci, et utilisé pour déterminer si l'insolation réelle dépasse une insolation prédéfinie ; et un dispositif de commande, connecté au support de dispositif de poursuite, connecté au module de détermination d'insolation et communiquant avec celui-ci, et utilisé pour ajuster, en fonction d'un résultat de détermination du module de détermination d'insolation, un angle du support de dispositif de poursuite. Le système de génération d'énergie solaire concentrée et le procédé de génération d'énergie peuvent être utilisés pour assurer l'efficacité de génération d'énergie d'une centrale solaire concentrée, de sorte à accroître efficacement un taux d'utilisation des héliostats (3) dans la centrale solaire concentrée.
PCT/CN2018/075005 2017-02-24 2018-02-01 Système de génération d'énergie solaire concentrée et procédé de génération d'énergie Ceased WO2018153233A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201710104687.7 2017-02-24
CN201710104687.7A CN106602989B (zh) 2017-02-24 2017-02-24 一种聚光光热发电系统及发电方法

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Publication number Priority date Publication date Assignee Title
CN106602989B (zh) * 2017-02-24 2018-04-06 江苏中信博新能源科技股份有限公司 一种聚光光热发电系统及发电方法
US11283395B2 (en) 2018-03-23 2022-03-22 Nextracker Inc. Multiple actuator system for solar tracker
US11387771B2 (en) 2018-06-07 2022-07-12 Nextracker Llc Helical actuator system for solar tracker
US11050383B2 (en) 2019-05-21 2021-06-29 Nextracker Inc Radial cam helix with 0 degree stow for solar tracker
CN111338386B (zh) * 2019-12-20 2021-09-03 武汉理工大学 一种风荷载作用下定日镜聚光效率评估方法

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WO2010015362A2 (fr) * 2008-08-03 2010-02-11 Nikolaus Joerg Centrale solaire
US20120192857A1 (en) * 2011-01-31 2012-08-02 Google Inc. Heliostat Assignment in a Multi-Tower Field
CN103135600A (zh) * 2011-11-25 2013-06-05 陕西科林能源发展股份有限公司 一种定日镜控制系统
JP5964122B2 (ja) * 2012-04-19 2016-08-03 北越工業株式会社 エンジン駆動型発電機におけるエンジンと発電機本体の連結構造
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