WO2018161647A1 - Illumination compensation system for crops in photovoltaic power station - Google Patents

Illumination compensation system for crops in photovoltaic power station Download PDF

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Publication number
WO2018161647A1
WO2018161647A1 PCT/CN2017/113865 CN2017113865W WO2018161647A1 WO 2018161647 A1 WO2018161647 A1 WO 2018161647A1 CN 2017113865 W CN2017113865 W CN 2017113865W WO 2018161647 A1 WO2018161647 A1 WO 2018161647A1
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Prior art keywords
illumination compensation
ground
compensation system
angle
solar cell
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PCT/CN2017/113865
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French (fr)
Chinese (zh)
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陈国庆
马超群
朱纯
吴亚敏
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江南大学
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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G9/00—Cultivation in receptacles, forcing-frames or greenhouses; Edging for beds, lawn or the like
    • A01G9/24—Devices or systems for heating, ventilating, regulating temperature, illuminating, or watering, in greenhouses, forcing-frames, or the like
    • A01G9/249—Lighting means
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping

Definitions

  • the invention relates to a crop illumination compensation device, in particular to a crop illumination compensation system in a photovoltaic power station, belonging to the field of illumination compensation.
  • China is the world's largest producer of solar cells, with battery production accounting for nearly 80% of the world's total.
  • China's photovoltaic utilization forms are mainly concentrated power plants.
  • in the densely populated eastern part there are few large flat wasteland, and it is inevitable to establish a large power station to conflict with agricultural land. Under this situation, people began to explore a new land use model that can ensure the normal operation of photovoltaic power plants and the complementary sunlight of crops.
  • the domestic agricultural light complementary project mainly adopts the structure of the blinds, that is, each battery assembly is installed at a certain inclination angle or with single-axis or dual-axis tracking, by increasing the installation height of the components and expanding the reservation between adjacent components.
  • Space can effectively reduce the impact of solar cell modules on crops, but its shortcomings are also very obvious. Due to the large interval of battery components, the installed capacity per unit area is reduced, and the power generation cost is increased.
  • the invention provides a novel crop illumination compensation system for a photovoltaic power station, which is used for solving the problems existing in the prior art of the agricultural light complementary project.
  • a crop illumination compensation system in a photovoltaic power plant comprising a solar panel and a light compensation system, wherein the solar panel is composed of a plurality of solar cell modules arranged side by side in a tightly arranged manner, adjacent solar cells
  • the reserved space between the boards is used as a sunlight collection area, and the illumination compensation system is installed in the reserved space, and the sunlight is introduced under the solar cell module to compensate the crops under the solar battery group.
  • the illumination compensation system comprises a double specular reflection part and a diffuse reflection part
  • the double specular reflection part is composed of two plexiglass plane mirrors with different inclination angles, wherein the plane mirror with a large angle to the ground directly reflects the sunlight to the ground, and the angle with the ground is relatively high.
  • the small plane mirror reflects the sunlight to the back of the solar cell module, and the angle between each plane mirror and the ground is adjustable;
  • the diffuse reflection part is aluminum foil, which is attached to the back of the solar cell module, receives the light reflected by the plane mirror, and The light is diffusely reflected to the ground below the solar module.
  • the number of solar modules between adjacent two illumination compensation systems can be determined based on the average solar illuminance at the installation site and the amount of light required to grow the crop underneath the assembly.
  • the installation angle of the two flat mirrors can be calculated and adjusted according to the number of solar modules and the dimensions of the installation location, ensuring that the mirror can reflect sunlight to the ground below the solar module from sunrise to sunset.
  • the average illumination time in the area below the component is more than 7 hours, so as to ensure the normal power generation of the solar cell module, the crops planted under the solar cell module are compensated by light to make the crop grow normally.
  • the average optical power in the area under the battery assembly is 18.25% of the sunlight power after the crop light compensation system in the photovoltaic power station of the present invention is measured by the solar power meter, which is 4.5 times that of the uncompensated system, which greatly improves the crops. Light compensation.
  • FIG. 1 is a schematic diagram of a three-dimensional structure of a solar cell module and an illumination compensation system.
  • Figure 2 is a front view of the illumination compensation system.
  • Figure 3 is a schematic diagram of the operation of the illumination compensation system under three different angles of sunlight.
  • 1- solar cell module 2-ground; 3-light compensation system A; 4-light compensation system B; 5-aluminum foil; 6-plane mirror A1; 7-plane mirror B1; 8-plane mirror A2; 9-plane mirror B2; 10-angle light of 30°; 11-angle of 45°; 12-angle of 90°.
  • the size of the solar cell module 1 is 100 cm ⁇ 200 cm, and is arranged side by side in a tightly arranged manner in the east-west direction.
  • the interval between the adjacent solar cell modules 1 is 2 cm, and the height of the solar cell module 1 from the ground 2 is 200cm.
  • Each of the five solar cell modules 1 is vacated with a space of 100 cm for mounting the illumination compensation system A3 and the illumination compensation system B4.
  • the aluminum foil 5 is attached to the back surface of the solar cell module 1, which can cause diffuse reflection on the surface.
  • the illumination compensation system A3 is composed of two plexiglass plane mirrors A1 and a plane mirror B1.
  • the illumination compensation system A4 is composed of two plexiglass plane mirrors A2 and plane mirrors B2, and is respectively installed in the reserved space on the left and right sides of the solar panel.
  • the mirror size of the plane mirror A1 and the plane mirror A2 is 70 cm ⁇ 200 cm, and the angle with the ground 2 is ⁇ ;
  • the mirror size of the mirror B1 and the plane mirror B2 is 46 cm ⁇ 200 cm, and the angle with the ground 2 is ⁇ .
  • the mirror mirror A1 and the mirror mirror A2 have a mirror highest point of 30 cm higher than the upper surface of the solar cell module 1, and are 50 cm from the edge of the solar cell module 1.
  • the angle between the mirror surface of the plane mirror A1 and the mirror surface of the plane mirror A2 and the ground 2 can be determined according to the dimension of the installation location.
  • the selection angle of the angle ⁇ is to ensure that sunlight can be reflected to the ground below the fifth solar cell module 1.
  • the selection principle of the plane mirror B1 and the angle between the mirror surface of the plane mirror B2 and the ground 2 is to ensure that the sunlight can be reflected by the mirror surface to the aluminum foil 5 on the back side of the most middle solar cell module 1 when the sunlight is irradiated vertically. Assuming an effective illumination begins when the sun angle is 30°, the angle ⁇ should be chosen to be 94° and the angle ⁇ should be chosen to be 50°.
  • the illumination compensation system is set based on the parameters obtained above. By adjusting the illumination angle, simulate the exposure of the sun during the day, calculate the daylighting time in the area under the battery pack. When the sunlight angle is less than 30°, the solar power is very small. Therefore, the illumination compensation system is set to work when the illumination angle is greater than 30°, and the angle of 360° of the rotation of the earth corresponds to 24 hours a day, and the illumination angle can be obtained every hour. Change 15°. The ground below the five battery modules is divided into five areas, and the results of the illumination time are obtained by continuously changing the illumination angle.
  • the average illumination time in the area under the battery pack during the day is as long as 7 hours or more.
  • the angle value is the angle between the projection of the light in the plane shown and the ground.
  • the sun is in the east direction in the morning and the sun shines on the illumination compensation system B4.
  • the light angle is 30°
  • the sunlight is irradiated on the mirror surface of the plane mirror A2, and the light is directly reflected to the ground below the solar module 1 on the eastmost side.
  • the sunlight is irradiated on the mirror surface of the plane mirror A2, and the light is directly reflected to the ground below the solar cell module 1 in the middle.
  • the sunlight is irradiated on the mirror surface of the plane mirror A2, and the light is reflected onto the aluminum foil 5 on the back of the most central solar cell module 1, and is diffused and reflected to the ground below.
  • the sun is in the west direction in the afternoon and the sun shines on the illumination compensation system A3.
  • the operation of the illumination compensation system A3 is similar to that of the illumination compensation system B4.
  • the built-in light compensation system is used for indoor lighting tests, using full-spectrum solar lights to simulate sunlight, and its spectral range is similar to natural sunlight.
  • the solar power meter is used to test the light power, the optical power of each area when compensation is compensated, and the optical power of each area without compensation at the illumination angles of 30°, 45° and 90°, respectively, and calculate the average data (this application)
  • the Xinbao Science and Technology SM206 solar power meter is used in the middle, and the ground below the five battery modules is divided into five areas. The results are shown in Table 2:
  • the average optical power of each region is 0.1 W/m 2 without illumination compensation, and the present invention is used.
  • the average optical power of each area is increased to 1.4 W/m 2 when the illumination angle is 30°, and the average optical power of each area is increased to 1.6 W/m 2 when the illumination angle is 45°.
  • the average optical power of each region is increased to 0.6 W/m 2 , which is 14 times, 16 times and 6 times, respectively, in the case of no compensation system. It can be seen that under the indoor illumination, the crop illumination compensation system of the photovoltaic power station of the invention can greatly improve the optical power and has a remarkable effect.
  • the illumination compensation system is moved to the outside for testing in the sun. Since the ambient light will affect the test results, we have a circle of curtains around the test system to block the ambient light.
  • the outdoor test time is from 6:00 to 18:00.
  • the solar power meter is used to test a set of data every hour, including the sunlight power, the optical power of each area when there is no illumination compensation, and the optical power of each area when there is compensation. as shown in Table 3:
  • the crop illumination compensation system in the photovoltaic power plant using the present invention can greatly increase the regional average optical power in each time period.
  • the average regional illumination power throughout the day is 58.6 W/m 2 , which is 18.25% of the average solar power, which is 4.5 times that without illumination compensation.

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  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Photovoltaic Devices (AREA)
  • Cultivation Of Plants (AREA)

Abstract

Provided is an illumination compensation system for crops in a photovoltaic power station, comprising a solar cell panel and illumination compensation systems (A3, B4). The solar cell panel is composed of a plurality of solar cell assemblies (1) mounted in parallel in a closely arranged manner. The illumination compensation system (A3, B4) is mounted in a reserved space between adjacent solar cell panels; and the illumination compensation system (A3, B4) comprises a double-mirror face reflection part and a diffused reflection part, wherein the double-mirror face reflection part is composed of two organic glass plane mirrors (A1, B1, A2, B2) with different dip angles, and the size of an included angle between each plane mirror (A1, B1, A2, B2) and the ground is adjustable; and the diffused reflection part is an aluminium foil (5) which is adhered to the back surface of the solar cell assemblies. The present application is beneficial for performing illumination compensation for crops planted under the solar cell assemblies (1) while ensuring normal power generation of the solar cell assemblies (1), thereby allowing normal growth of the crops.

Description

一种光伏电站中农作物光照补偿系统Crop illumination compensation system in photovoltaic power station 技术领域Technical field
本发明涉及一种农作物光照补偿装置，具体为一种光伏电站中农作物光照补偿系统，属于光照补偿领域。The invention relates to a crop illumination compensation device, in particular to a crop illumination compensation system in a photovoltaic power station, belonging to the field of illumination compensation.
背景技术Background technique
随着能源消耗的不断上升，以及化石燃料能源的不断减少，世界各国都把目光转向开发新型的可再生能源以维持长远的可持续发展。太阳能是一种清洁的可再生能源，利用光伏电池可以将太阳能直接转化为电能。在发电过程中不消耗其他能源，相关技术在近十年中得到了快速的发展。As energy consumption continues to rise and fossil fuel energy continues to shrink, countries around the world are turning to developing new types of renewable energy to sustain long-term sustainability. Solar energy is a clean, renewable energy source that uses photovoltaic cells to convert solar energy directly into electricity. In the process of power generation, no other energy is consumed, and related technologies have been rapidly developed in the past decade.
中国是全球太阳能电池的第一生产大国，电池片产能占到全球近80％的份额。我国的光伏利用形式主要以集中式电站为主。然而在人口较为密集的东部鲜有大片平坦的荒地，要建立大型电站不可避免地要与农业用地产生冲突。在这种形势下，人们开始探寻一种能够同时保证光伏电站正常工作和农作物的农光互补的新型土地利用模式。China is the world's largest producer of solar cells, with battery production accounting for nearly 80% of the world's total. China's photovoltaic utilization forms are mainly concentrated power plants. However, in the densely populated eastern part, there are few large flat wasteland, and it is inevitable to establish a large power station to conflict with agricultural land. Under this situation, people began to explore a new land use model that can ensure the normal operation of photovoltaic power plants and the complementary sunlight of crops.
目前国内的农光互补的项目中，主要采用百叶窗的结构，即每个电池组件以一定的倾角安装或带有单轴或双轴跟踪，通过提高组件安装高度和扩大相邻组件间的预留空间，能够有效地降低太阳能电池组件对农作物的影响，但是其缺点也十分明显，由于电池组件间隔较大，导致单位面积上的装机量下降，发电成本上升。At present, the domestic agricultural light complementary project mainly adopts the structure of the blinds, that is, each battery assembly is installed at a certain inclination angle or with single-axis or dual-axis tracking, by increasing the installation height of the components and expanding the reservation between adjacent components. Space can effectively reduce the impact of solar cell modules on crops, but its shortcomings are also very obvious. Due to the large interval of battery components, the installed capacity per unit area is reduced, and the power generation cost is increased.
发明内容Summary of the invention
本发明提出一种新型的光伏电站中农作物光照补偿系统，用于解决农光互补项目中现有技术存在的问题。The invention provides a novel crop illumination compensation system for a photovoltaic power station, which is used for solving the problems existing in the prior art of the agricultural light complementary project.
本发明采用的技术方案如下：一种光伏电站中农作物光照补偿系统，包括太阳能电池板和光照补偿系统，太阳能电池板由多块太阳能电池组件采用紧密排布的方式并排安装构成，相邻太阳能电池板之间预留空间作为阳光收集区域，光照补偿系统安装在预留空间内，将阳光导入太阳能电池组件下方，对太阳能电池组下方作物进行光照补偿。The technical scheme adopted by the invention is as follows: a crop illumination compensation system in a photovoltaic power plant, comprising a solar panel and a light compensation system, wherein the solar panel is composed of a plurality of solar cell modules arranged side by side in a tightly arranged manner, adjacent solar cells The reserved space between the boards is used as a sunlight collection area, and the illumination compensation system is installed in the reserved space, and the sunlight is introduced under the solar cell module to compensate the crops under the solar battery group.
光照补偿系统包括双镜面反射部分和漫反射部分，双镜面反射部分由两块不同倾角的有机玻璃平面镜构成，其中，与地面夹角较大的平面镜直接将阳光反射至地面，与地面夹角较小的平面镜将阳光反射至太阳能电池组件背面，每块平面镜与地面的夹角大小均为可调；漫反射部分为铝箔，贴设于太阳能电池组件的背面，接收平面镜反射来的光，并将光漫反射至太阳能电池组件下方的地面。 The illumination compensation system comprises a double specular reflection part and a diffuse reflection part, and the double specular reflection part is composed of two plexiglass plane mirrors with different inclination angles, wherein the plane mirror with a large angle to the ground directly reflects the sunlight to the ground, and the angle with the ground is relatively high. The small plane mirror reflects the sunlight to the back of the solar cell module, and the angle between each plane mirror and the ground is adjustable; the diffuse reflection part is aluminum foil, which is attached to the back of the solar cell module, receives the light reflected by the plane mirror, and The light is diffusely reflected to the ground below the solar module.
使用本发明时，相邻的两个光照补偿系统间的太阳能电池组件个数可以根据安装地点的平均阳光照度以及组件下方种植的农作物的需光量来确定。两块平面镜的安装角度可根据太阳能电池组件个数以及安装地点的维度进行计算和调整，确保从日出到日落之间，平面镜均能够将阳光反射到太阳能电池组件下方的地面上，一天中电池组件下方区域的平均光照时间长达7小时以上，从而在确保太阳能电池组件正常发电的同时，对太阳能电池组件下方种植的农作物进行光照补偿，使农作物正常生长。通过太阳能功率计测量出使用本发明的光伏电站中农作物光照补偿系统后电池组件下方区域平均光功率为阳光光功率的18.25％，是无补偿系统情况下的4.5倍，极大的提高了对农作物的光照补偿。When using the present invention, the number of solar modules between adjacent two illumination compensation systems can be determined based on the average solar illuminance at the installation site and the amount of light required to grow the crop underneath the assembly. The installation angle of the two flat mirrors can be calculated and adjusted according to the number of solar modules and the dimensions of the installation location, ensuring that the mirror can reflect sunlight to the ground below the solar module from sunrise to sunset. The average illumination time in the area below the component is more than 7 hours, so as to ensure the normal power generation of the solar cell module, the crops planted under the solar cell module are compensated by light to make the crop grow normally. The average optical power in the area under the battery assembly is 18.25% of the sunlight power after the crop light compensation system in the photovoltaic power station of the present invention is measured by the solar power meter, which is 4.5 times that of the uncompensated system, which greatly improves the crops. Light compensation.
附图说明DRAWINGS
下面结合附图对本发明作进一步说明。The invention will now be further described with reference to the accompanying drawings.
图1太阳能电池组件及光照补偿系统的三维结构示意图。FIG. 1 is a schematic diagram of a three-dimensional structure of a solar cell module and an illumination compensation system.
图2光照补偿系统的前视图。Figure 2 is a front view of the illumination compensation system.
图3三种不同角度的阳光光照下，光照补偿系统的工作示意图。Figure 3 is a schematic diagram of the operation of the illumination compensation system under three different angles of sunlight.
其中，1-太阳能电池组件；2-地面；3-光照补偿系统A；4-光照补偿系统B；5-铝箔；6-平面镜A1；7-平面镜B1；8-平面镜A2；9-平面镜B2；10-角度为30°的光线；11-角度为45°的光线；12-角度为90°的光线。Wherein, 1- solar cell module; 2-ground; 3-light compensation system A; 4-light compensation system B; 5-aluminum foil; 6-plane mirror A1; 7-plane mirror B1; 8-plane mirror A2; 9-plane mirror B2; 10-angle light of 30°; 11-angle of 45°; 12-angle of 90°.
具体实施方式detailed description
以下结合附图和具体实施例对本发明提出的一种光伏电站中农作物光照补偿系统作进一步详细说明。根据下面说明和权利要求书，本发明的优点和特征将更清楚。需说明的是，附图均采用非常简化的形式且均使用非精准的比例，仅用以方便、明晰地辅助说明本发明实施例的目的。The crop illumination compensation system in a photovoltaic power plant proposed by the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Advantages and features of the present invention will be apparent from the description and appended claims. It should be noted that the drawings are in a very simplified form and all use non-precise proportions, and are only for convenience and clarity to assist the purpose of the embodiments of the present invention.
实施例一 Embodiment 1
下面结合图1～图3对本发明进行具体说明。The present invention will be specifically described below with reference to Figs. 1 to 3 .
参见图1、图2，太阳能电池组件1的尺寸为100cm×200cm，沿东西方向采用紧密排布的方式并排安装，相邻太阳能电池组件1的间隔为2cm，太阳能电池组件1距离地面2高度为200cm。每隔5块太阳能电池组件1空出100cm宽的空间，用于安装光照补偿系统A3、光照补偿系统B4。太阳能电池组件1背面贴有铝箔5，可在表面产生漫反射作用。Referring to FIG. 1 and FIG. 2, the size of the solar cell module 1 is 100 cm×200 cm, and is arranged side by side in a tightly arranged manner in the east-west direction. The interval between the adjacent solar cell modules 1 is 2 cm, and the height of the solar cell module 1 from the ground 2 is 200cm. Each of the five solar cell modules 1 is vacated with a space of 100 cm for mounting the illumination compensation system A3 and the illumination compensation system B4. The aluminum foil 5 is attached to the back surface of the solar cell module 1, which can cause diffuse reflection on the surface.
光照补偿系统A3由两块有机玻璃材质的平面镜A1、平面镜B1构成，光照补偿系统A4由两块有机玻璃材质的平面镜A2、平面镜B2构成，分别安装在太阳能电池板左右两侧的预留空间。其中，平面镜A1、平面镜A2的镜面尺寸为70cm×200cm，与地面2夹角为α；平 面镜B1、平面镜B2的镜面尺寸为46cm×200cm，与地面2夹角为β。平面镜A1、平面镜A2的镜面最高点高于太阳能电池组件1上表面30cm，距离太阳能电池组件1边缘50cm。The illumination compensation system A3 is composed of two plexiglass plane mirrors A1 and a plane mirror B1. The illumination compensation system A4 is composed of two plexiglass plane mirrors A2 and plane mirrors B2, and is respectively installed in the reserved space on the left and right sides of the solar panel. Wherein, the mirror size of the plane mirror A1 and the plane mirror A2 is 70 cm×200 cm, and the angle with the ground 2 is α; The mirror size of the mirror B1 and the plane mirror B2 is 46 cm × 200 cm, and the angle with the ground 2 is β. The mirror mirror A1 and the mirror mirror A2 have a mirror highest point of 30 cm higher than the upper surface of the solar cell module 1, and are 50 cm from the edge of the solar cell module 1.
平面镜A1、平面镜A2的镜面与地面2的夹角大小可以根据安装所在地的维度来确定。夹角α的选择原则为确保阳光能够被反射到第五块太阳能电池组件1下方的地面。平面镜B1、平面镜B2的镜面与地面2夹角β的选择原则为确保阳光垂直地面照射时，阳光经过镜面能够被反射到最中间一块太阳能电池组件1背面的铝箔5上。假设太阳角度为30°时开始有效照射，则夹角α应该选为94°，夹角β应该选为50°。The angle between the mirror surface of the plane mirror A1 and the mirror surface of the plane mirror A2 and the ground 2 can be determined according to the dimension of the installation location. The selection angle of the angle α is to ensure that sunlight can be reflected to the ground below the fifth solar cell module 1. The selection principle of the plane mirror B1 and the angle between the mirror surface of the plane mirror B2 and the ground 2 is to ensure that the sunlight can be reflected by the mirror surface to the aluminum foil 5 on the back side of the most middle solar cell module 1 when the sunlight is irradiated vertically. Assuming an effective illumination begins when the sun angle is 30°, the angle α should be chosen to be 94° and the angle β should be chosen to be 50°.
根据上述得到的参数设定光照补偿系统。通过调整光照角度，模拟一天中阳光的照射情况，计算电池组件下方区域的一天光照时间。阳光角度小于30°时，太阳光功率很小，因此设定光照补偿系统在光照角度大于30°时开始工作，将地球自转一周的角度360°对应于一天24小时，则可得到光照角度每小时改变15°。将五块电池组件下方的地面相应地分为5个区域，通过不断改变光照角度，得到光照时间的结果如表1所示。The illumination compensation system is set based on the parameters obtained above. By adjusting the illumination angle, simulate the exposure of the sun during the day, calculate the daylighting time in the area under the battery pack. When the sunlight angle is less than 30°, the solar power is very small. Therefore, the illumination compensation system is set to work when the illumination angle is greater than 30°, and the angle of 360° of the rotation of the earth corresponds to 24 hours a day, and the illumination angle can be obtained every hour. Change 15°. The ground below the five battery modules is divided into five areas, and the results of the illumination time are obtained by continuously changing the illumination angle.
表1 模拟计算得到的电池组件下方地面一天光照时间Table 1 Simulated calculation of the ground day light time below the battery assembly
Figure PCTCN2017113865-appb-000001
Figure PCTCN2017113865-appb-000001
由表1中可知，一天中电池组件下方区域的平均光照时间长达7小时以上。As can be seen from Table 1, the average illumination time in the area under the battery pack during the day is as long as 7 hours or more.
图3是角度为30°的光线10、角度为45°的光线11、角度为90°的光线12三种不同角度的光照下，光照补偿系统B4的工作情况。其中，角度值为光线在所示平面的投影与地面的夹角大小。3 is the operation of the illumination compensation system B4 under three different angles of illumination of the light 10 with an angle of 30°, the light 11 with an angle of 45°, and the light with an angle of 90°. Wherein, the angle value is the angle between the projection of the light in the plane shown and the ground.
太阳在上午位于偏东方向，阳光会照射在光照补偿系统B4上。当光线角度为30°时，阳光照射在平面镜A2的镜面上，光线直接被反射至最东边的一块太阳能电池组件1下方的地面上。The sun is in the east direction in the morning and the sun shines on the illumination compensation system B4. When the light angle is 30°, the sunlight is irradiated on the mirror surface of the plane mirror A2, and the light is directly reflected to the ground below the solar module 1 on the eastmost side.
当光线角度为45°时，阳光照射在平面镜A2的镜面上，光线直接被反射至最中间的一块太阳能电池组件1下方的地面上。When the light angle is 45°, the sunlight is irradiated on the mirror surface of the plane mirror A2, and the light is directly reflected to the ground below the solar cell module 1 in the middle.
当光线角度为90°时，阳光照射在平面镜A2的镜面上，光线被反射至最中间的一块太阳能电池组件1背面的铝箔5上，再漫反射至下方地面上。When the light angle is 90°, the sunlight is irradiated on the mirror surface of the plane mirror A2, and the light is reflected onto the aluminum foil 5 on the back of the most central solar cell module 1, and is diffused and reflected to the ground below.
太阳在下午位于偏西方向，阳光会照射在光照补偿系统A3上。当光照角度不同时，光照补偿系统A3的工作情况与光照补偿系统B4类似。 The sun is in the west direction in the afternoon and the sun shines on the illumination compensation system A3. When the illumination angle is different, the operation of the illumination compensation system A3 is similar to that of the illumination compensation system B4.
对照例1 室内测试结果Comparative Example 1 Indoor test results
将搭建好的光照补偿系统在室内进行光照测试，使用全光谱太阳灯模拟太阳光，其光谱范围近似于天然太阳光。分别在30°，45°和90°的光照角度下通过太阳能功率计对灯光功率、有补偿时各区域的光功率和无补偿时各区域的光功率进行测试，并计算出平均数据(本申请中均使用欣宝科仪SM206太阳能功率计)，将五块电池组件下方的地面相应地分为5个区域，结果如表2所示：The built-in light compensation system is used for indoor lighting tests, using full-spectrum solar lights to simulate sunlight, and its spectral range is similar to natural sunlight. The solar power meter is used to test the light power, the optical power of each area when compensation is compensated, and the optical power of each area without compensation at the illumination angles of 30°, 45° and 90°, respectively, and calculate the average data (this application) The Xinbao Science and Technology SM206 solar power meter is used in the middle, and the ground below the five battery modules is divided into five areas. The results are shown in Table 2:
表2 系统室内测试结果(单位W/m2)Table 2 System indoor test results (unit W/m 2 )
Figure PCTCN2017113865-appb-000002
Figure PCTCN2017113865-appb-000002
从表2中可以看出，在室内光照测试中，当光照角度为30°、45°和90°时，无光照补偿时各区域平均光功率均为0.1W/m2，使用了本发明的光伏电站中农作物光照补偿系统后，在光照角度为30°时将各区域平均光功率提高至1.4W/m2，在光照角度为45°时将各区域平均光功率提高至1.6W/m2，在光照角度为90°时将各区域平均光功率提高至0.6W/m2，分别是无补偿系统情况下的14倍、16倍和6倍。由此可见，在室内光照下，本发明的光伏电站中农作物光照补偿系统能够极大提高光功率，具有显著效果。It can be seen from Table 2 that in the indoor illumination test, when the illumination angle is 30°, 45°, and 90°, the average optical power of each region is 0.1 W/m 2 without illumination compensation, and the present invention is used. After the crop illumination compensation system in the photovoltaic power station, the average optical power of each area is increased to 1.4 W/m 2 when the illumination angle is 30°, and the average optical power of each area is increased to 1.6 W/m 2 when the illumination angle is 45°. When the illumination angle is 90°, the average optical power of each region is increased to 0.6 W/m 2 , which is 14 times, 16 times and 6 times, respectively, in the case of no compensation system. It can be seen that under the indoor illumination, the crop illumination compensation system of the photovoltaic power station of the invention can greatly improve the optical power and has a remarkable effect.
对照例2 室外测试结果Comparative Example 2 Outdoor test results
完成室内测试后，又将该光照补偿系统搬至室外在阳光下进行测试。由于外界环境光会对测试结果产生影响，因此我们在测试系统的四周围上一圈布帘来阻挡环境光。室外测试时间为6:00～18:00，每隔1小时使用太阳能功率计测试一组数据，包括阳光功率、无光照补偿时各区域的光功率以及有补偿时各区域的光功率，测试结果如表3所示：After the indoor test is completed, the illumination compensation system is moved to the outside for testing in the sun. Since the ambient light will affect the test results, we have a circle of curtains around the test system to block the ambient light. The outdoor test time is from 6:00 to 18:00. The solar power meter is used to test a set of data every hour, including the sunlight power, the optical power of each area when there is no illumination compensation, and the optical power of each area when there is compensation. as shown in Table 3:
表3 系统室外测试结果(单位W/m2)Table 3 System outdoor test results (unit W/m 2 )
Figure PCTCN2017113865-appb-000003
Figure PCTCN2017113865-appb-000003
Figure PCTCN2017113865-appb-000004
Figure PCTCN2017113865-appb-000004
由表3中可以看出，使用本发明的光伏电站中农作物光照补偿系统能够大幅度提升各时间段中区域平均光功率。具体的，整天中区域平均光照功率为58.6W/m2，为平均阳光功率的18.25％，是没有光照补偿情况下的4.5倍。As can be seen from Table 3, the crop illumination compensation system in the photovoltaic power plant using the present invention can greatly increase the regional average optical power in each time period. Specifically, the average regional illumination power throughout the day is 58.6 W/m 2 , which is 18.25% of the average solar power, which is 4.5 times that without illumination compensation.
虽然本发明已以较佳实施例公开如上，但其并非用以限定本发明，任何熟悉此技术的人，在不脱离本发明的精神和范围内，都可做各种的改动与修饰，因此本发明的保护范围应该以权利要求书所界定的为准。 Although the present invention has been disclosed in the above preferred embodiments, the present invention is not limited thereto, and various modifications and changes can be made thereto without departing from the spirit and scope of the invention. The scope of the invention should be determined by the scope of the claims.

Claims (7)

  1. 一种光伏电站中农作物光照补偿系统，其特征在于：包括太阳能电池板和光照补偿系统；所述太阳能电池板由多块太阳能电池组件采用紧密排布的方式并排安装构成，相邻太阳能电池板之间预留空间作为阳光收集区域；所述光照补偿系统安装在预留空间内，将阳光导入太阳能电池组件下方，对太阳能电池组下方作物进行光照补偿。A crop illumination compensation system for a photovoltaic power station, comprising: a solar panel and an illumination compensation system; wherein the solar panel is composed of a plurality of solar modules assembled side by side in a tightly arranged manner, and adjacent solar panels are The reserved space is used as a sunlight collection area; the illumination compensation system is installed in the reserved space, and the sunlight is introduced under the solar battery module to compensate the light of the crop under the solar battery.
  2. 根据权利要求1所述的光伏电站中农作物的光照补偿系统，其特征在于：所述光照补偿系统包括双镜面反射部分和漫反射部分；双镜面反射部分由两块不同倾角的有机玻璃平面镜构成，其中，与地面夹角较大的平面镜直接将阳光反射至地面，与地面夹角较小的平面镜将阳光反射至太阳能电池组件背面，每块平面镜与地面的夹角大小均为可调；漫反射部分为铝箔，贴设于太阳能电池组件的背面，接收平面镜反射来的光，并将光漫反射至太阳能电池组件下方的地面。The illumination compensation system for crops in a photovoltaic power plant according to claim 1, wherein the illumination compensation system comprises a double specular reflection portion and a diffuse reflection portion; and the double specular reflection portion is composed of two plexiglass plane mirrors of different inclination angles. Among them, the plane mirror with a large angle to the ground directly reflects the sunlight to the ground, and the plane mirror with a small angle to the ground reflects the sunlight to the back of the solar cell module, and the angle between each plane mirror and the ground is adjustable; diffuse reflection Part of the aluminum foil is attached to the back of the solar cell module, receives the light reflected by the plane mirror, and diffuses the light to the ground below the solar cell module.
  3. 根据权利要求2所述的光伏电站中农作物的光照补偿系统，其特征在于：与地面夹角较大的平面镜直接将阳光反射至太阳能电池板中最远一块太阳能电池组件下方的地面，与地面夹角较小的平面镜将阳光反射至太阳能电池板中最中间太阳能电池组件背面的铝箔上。The illumination compensation system for crops in a photovoltaic power plant according to claim 2, wherein the plane mirror with a large angle to the ground directly reflects sunlight to the ground below the solar module of the solar panel, and the ground clamp The smaller angle mirror reflects sunlight onto the aluminum foil on the back of the most intermediate solar module in the solar panel.
  4. 根据权利要求3所述的光伏电站中农作物的光照补偿系统，其特征在于：与地面夹角较大的平面镜与地面的夹角为94°，与地面夹角较小的平面镜与地面的夹角为50°。The illumination compensation system for crops in a photovoltaic power plant according to claim 3, wherein the angle between the plane mirror and the ground having a large angle with the ground is 94°, and the angle between the plane mirror and the ground having a small angle with the ground is at an angle with the ground. It is 50°.
  5. 一种含有权利要求1-4任一所述的光伏电站中农作物的光照补偿系统的设备。An apparatus comprising an illumination compensation system for crops in a photovoltaic power plant according to any of claims 1-4.
  6. 如权利要求1-4任一所述的光伏电站中农作物的光照补偿系统的应用。The use of an illumination compensation system for crops in a photovoltaic power plant according to any of claims 1-4.
  7. 如权利要求5所述的设备的应用。 The application of the device of claim 5.
PCT/CN2017/113865 2017-03-07 2017-11-30 Illumination compensation system for crops in photovoltaic power station WO2018161647A1 (en)

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CN107079720A (en) * 2017-03-07 2017-08-22 江南大学 A kind of photovoltaic plant middle peasant crop illumination compensation system
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001077399A (en) * 1999-09-03 2001-03-23 Ntt Power & Building Facilities Inc Solar light power generating device
CN202514343U (en) * 2012-01-12 2012-11-07 张名尧 Under-flyover plant daylighting device
JP2013165141A (en) * 2012-02-10 2013-08-22 Frontier East Japan Co Ltd Photovoltaic power generation system
CN103424792A (en) * 2012-05-15 2013-12-04 苏州泉林电子科技有限公司 Using the reflection plate and back sheet for a solar cell
CN205567263U (en) * 2016-04-28 2016-09-14 协鑫电力设计研究有限公司 Complementary green house structure of farming light
CN107079720A (en) * 2017-03-07 2017-08-22 江南大学 A kind of photovoltaic plant middle peasant crop illumination compensation system

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103595335A (en) * 2013-11-05 2014-02-19 任高廷 Fixed type solar photovoltaic power generation device suitable for agriculture
CN103766166B (en) * 2014-01-24 2016-11-23 华盛绿能农业科技有限公司 There is the photovoltaic agricultural greenhouse of distributed solar energy battery component
CN204089696U (en) * 2014-08-06 2015-01-07 东南大学 A kind of photovoltaic power generation apparatus
CN205682021U (en) * 2016-06-12 2016-11-16 安阳师范学院 The light adjustment structure of photovoltaic generation booth
CN206060631U (en) * 2016-06-13 2017-03-29 华电电力科学研究院 A kind of novel agricultural booth photovoltaic generating system
CN205922150U (en) * 2016-08-23 2017-02-08 厦门远通电子技术有限公司 Illumination compensation system based on solar energy

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001077399A (en) * 1999-09-03 2001-03-23 Ntt Power & Building Facilities Inc Solar light power generating device
CN202514343U (en) * 2012-01-12 2012-11-07 张名尧 Under-flyover plant daylighting device
JP2013165141A (en) * 2012-02-10 2013-08-22 Frontier East Japan Co Ltd Photovoltaic power generation system
CN103424792A (en) * 2012-05-15 2013-12-04 苏州泉林电子科技有限公司 Using the reflection plate and back sheet for a solar cell
CN205567263U (en) * 2016-04-28 2016-09-14 协鑫电力设计研究有限公司 Complementary green house structure of farming light
CN107079720A (en) * 2017-03-07 2017-08-22 江南大学 A kind of photovoltaic plant middle peasant crop illumination compensation system

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