CN-121539197-B - Dynamic photovoltaic shutter system and control method thereof

CN121539197BCN 121539197 BCN121539197 BCN 121539197BCN-121539197-B

Abstract

The invention provides a dynamic photovoltaic shutter system and a control method thereof, wherein the system comprises a first photovoltaic shutter assembly, a second photovoltaic shutter assembly, a sky image acquisition module, a control module and a driving module; the control module can calculate according to the acquired sky image, and select the louver angle according to the user demand and the calculation result, and the motor enables the first photovoltaic louver assembly and the second photovoltaic louver assembly to realize angle adjustment according to the instruction issued by the control module. The dynamic photovoltaic shutter system and the control method thereof provided by the invention realize acquisition, processing and analysis calculation of sky images, obtain the relationship among shutter angles, generated energy, glare incidence, visual field rate and illuminance value, improve calculation accuracy and calculation efficiency, divide the shutter into two parts, realize independent control of a first photovoltaic shutter assembly and a second photovoltaic shutter assembly, respectively meet lighting requirements and power generation requirements, and improve automation and intelligent degree of the dynamic photovoltaic shutter system.

Inventors

TIAN ZHEN
Du sida
YAN SONG

Assignees

湖南大学

Dates

Publication Date: 20260508
Application Date: 20260120

Claims (9)

1. Dynamic photovoltaic tripe system, its characterized in that includes: the device comprises a first photovoltaic shutter assembly, a second photovoltaic shutter assembly, a sky image acquisition module, a control module and a driving module; The first photovoltaic shutter assembly comprises a plurality of shutters, the first photovoltaic shutter assembly is connected with the driving module, and the shutters in the first photovoltaic shutter assembly can be subjected to angle adjustment under the action of the driving module so as to meet lighting requirements or power generation requirements; the second photovoltaic shutter assembly comprises a plurality of shutters, the second photovoltaic shutter assembly is connected with the driving module, and the shutters in the second photovoltaic shutter assembly can be subjected to angle adjustment under the action of the driving module so as to meet the power generation requirement; the sky image acquisition module can acquire a sky image and is electrically connected with the control module; The control module can calculate the illuminance, the generated energy, the glare incidence rate and the visual field rate of the indoor working plane corresponding to each louver angle in a preset louver angle scheme according to the acquired sky image, select the louver angle according to the user requirement and the calculation result, send an instruction to the driving module, and enable the first photovoltaic louver assembly and the second photovoltaic louver assembly to realize angle adjustment according to the instruction sent by the control module; The control module calculates the generated energy corresponding to all the louver angles in a preset louver angle scheme, selects the maximum generated energy angle corresponding to the maximum generated energy, issues a command to the driving module, and controls each louver in the second photovoltaic louver assembly to rotate so that the angle of each louver in the second photovoltaic louver assembly is the maximum generated energy angle; in the control module, the method for calculating the generated energy according to the sky image acquired by the sky comprises the following steps: Collecting sky images and synthesizing HDR images; Analyzing sky radiation information according to the HDR image; Establishing a real-time sky model according to sky radiation information; Calculating incident radiation quantity of a photovoltaic panel in the shutter, wherein the incident radiation quantity of the photovoltaic panel comprises direct solar radiation, sky scattered radiation and ground reflected radiation; and calculating the generating capacity of the photovoltaic panel according to the direct solar radiation, the sky scattered radiation and the ground reflected radiation in the incident radiation quantity.
2. The dynamic photovoltaic blind system according to claim 1, wherein, The vertical distance between each shutter in the first photovoltaic shutter assembly and the ground is larger than the vertical distance between each shutter in the second photovoltaic shutter assembly and the ground.
3. The dynamic photovoltaic blind system according to claim 1, wherein, The control module calculates the illuminance of the indoor working plane corresponding to all the shutter angles in the preset shutter angle scheme, When the indoor working plane illuminance corresponding to the louver angle meets the preset illuminance condition, the control module screens the illuminance of the indoor working plane, screens the louver angle meeting the preset illuminance condition, and calculates the generated energy, the glare occurrence rate and the visual field rate corresponding to the louver angle meeting the preset illuminance condition; According to the shutter working mode selected by a user, an angle alpha conforming to the shutter working mode is selected, a control module issues a command to a driving module, and the driving module controls each shutter in the first photovoltaic shutter assembly to rotate so that the angle of each shutter in the first photovoltaic shutter assembly is alpha.
4. A control method of a dynamic photovoltaic shutter system, which is applied to the dynamic photovoltaic shutter system as claimed in any one of claims 1 to 3, Adjusting the angle of each shutter in the second photovoltaic shutter assembly to be the angle of the maximum power generation amount; It is determined whether or not there are room personnel currently in the room, If not, the angles of the shutters in the first photovoltaic shutter assembly are adjusted to the maximum power generation angle, If yes, judging whether the current working time is working time, If the working time is not the working time, the angle of each shutter in the first photovoltaic shutter assembly is adjusted to be the angle of the maximum power generation amount, And if the first photovoltaic shutter assembly works for a certain time, adjusting the angles of the shutters in the first photovoltaic shutter assembly according to the user requirement or the current indoor illuminance condition.
5. The method for controlling a dynamic photovoltaic blind system according to claim 4, wherein the calculating method of the maximum power generation angle includes: The sky image acquisition module acquires a sky image; calculating the generated energy corresponding to each shutter angle in a preset all shutter angle scheme according to the acquired sky image, And the louver angle corresponding to the maximum value of the generated energy corresponding to all louver angles is the maximum generated energy angle.
6. The method for controlling a dynamic photovoltaic blind system according to claim 4, wherein the adjusting the angle of each blind in the first photovoltaic blind assembly according to the user requirement or the current indoor illuminance condition comprises: The sky image acquisition module acquires a sky image; calculating the illuminance of an indoor working plane corresponding to each shutter angle in a preset all-shutter angle scheme according to the acquired sky image; judging whether the calculated indoor working plane illuminance meets a preset illuminance condition, If the illuminance of the indoor working plane corresponding to all the louver angles does not meet the preset illuminance condition, controlling each louver angle in the first photovoltaic louver assembly to be adjusted to be 0 degrees, namely the louver level; if the illuminance of the indoor working plane corresponding to the louver angle meets the preset illuminance condition, screening a louver angle scheme meeting the preset illuminance condition, Respectively calculating the glare incidence rate, the visual field rate and the generated energy corresponding to each shutter angle in a shutter angle scheme meeting the preset illumination condition; according to the shutter working mode selected by a user, selecting an angle conforming to the shutter working mode from shutter angle schemes conforming to preset illumination conditions, and adjusting the angle of each shutter in the first photovoltaic shutter assembly according to the angle.
7. The method for controlling a dynamic photovoltaic blind system according to claim 6, wherein determining whether the calculated indoor work plane illuminance satisfies a preset illuminance condition comprises: Judging whether the proportion of the indoor plane area with the illuminance value larger than the preset illuminance value calculated by the current louver angle to the total indoor plane area is larger than the preset proportion value, If yes, the current shutter angle accords with a preset illumination condition; if not, the current shutter angle does not meet the preset illumination condition.
8. The method for controlling a dynamic photovoltaic blind system according to claim 6, wherein the user-selected blind operation modes include a power generation optimum mode, a glare optimum mode, a field of view optimum mode, and a comprehensive optimum mode.
9. The method for controlling a dynamic photovoltaic blind system according to claim 6, it is characterized in that the method comprises the steps of, When the shutter working mode selected by the user is the comprehensive optimal mode, calculating ideal values of three indexes including generating capacity, visual field rate and glare incidence rate by using a TOPSIS model, and adjusting angles of the shutters in the first photovoltaic shutter assembly according to the obtained ideal values.

Description

Dynamic photovoltaic shutter system and control method thereof Technical Field The invention relates to the fields of building energy conservation, building lighting technology and renewable energy source utilization, in particular to a dynamic photovoltaic shutter system and a control method thereof. Background Solar energy is taken as a renewable resource, and the energy consumption of the building can be obviously reduced by reasonably utilizing the solar energy. In hot seasons, excessive penetration of sunlight can lead to a substantial increase in building cold load, which in turn can lead to excessive building lighting load. While sun shading systems provide the function of regulating the entry of light, the efficiency of the utilization of sunlight is largely dependent on the behavior of the occupants. Once glare disturbances due to sunlight penetration occur, occupants often choose to close the sun shading device, and even if the disturbances have disappeared, they often do not want to re-open the sun shading system, which can significantly affect indoor lighting. Currently, common controllable shutter systems are generally based on indoor horizontal or vertical illuminance measuring points, which are used for controlling the shutter by collecting relevant information of fixed positions. The following problems exist in this control mode: Firstly, the fixed indoor measuring points cannot effectively adjust the angles of the shutters, secondly, the arrangement of the measuring points can affect the use of rooms, thirdly, the existing sunshade system is usually composed of a plurality of devices, the devices are required to be connected with each other, the devices are complex to install, and finally, privacy problems can be caused if the cameras are used for collecting in the internal environment of a building. In addition, the photovoltaic material is combined into the shutter system, so that excessive direct sunlight can be effectively shielded, indoor glare is reduced, indoor light environment is optimized, net energy consumption of a room can be reduced, and indoor thermal comfort is improved. Meanwhile, as a renewable energy source technology, the photovoltaic shutter system can also generate clean power, so that carbon emission is reduced. However, the use of existing photovoltaic systems remains problematic. For example, most existing photovoltaic systems are roof BAPV systems, in urban high-rise buildings, the installation space is small, self-adaptive adjustment cannot be performed according to the sun altitude angle, while the shutter sunshade systems can improve visual comfort, but are designed at fixed angles, so that the view is influenced, and meanwhile, the shutter sunshade systems cannot be combined with the photovoltaic systems, so that the requirements of energy conservation and emission reduction cannot be met. Disclosure of Invention The present invention is directed to the above-mentioned problems, and provides a dynamic photovoltaic shutter system and a control method thereof, which can solve one or more of the above-mentioned technical problems. According to one aspect of the present invention, there is provided a dynamic photovoltaic blind system comprising: the device comprises a first photovoltaic shutter assembly, a second photovoltaic shutter assembly, a sky image acquisition module, a control module and a driving module; The first photovoltaic shutter assembly comprises a plurality of shutters, the first photovoltaic shutter assembly is connected with the driving module, and the shutters in the first photovoltaic shutter assembly can be subjected to angle adjustment under the action of the driving module so as to meet lighting requirements or power generation requirements; The second photovoltaic shutter assembly comprises a plurality of shutters, the second photovoltaic shutter assembly is connected with the driving module, and the shutters in the second photovoltaic shutter assembly can be subjected to angle adjustment under the action of the driving module so as to meet the power generation requirement; the sky image acquisition module can acquire a sky image and is electrically connected with the control module; The control module can calculate the illuminance, the generated energy, the glare incidence rate and the visual field rate of the indoor working plane corresponding to each louver angle in the preset louver angle scheme according to the acquired sky image, select the louver angle according to the user requirement and the calculation result, send an instruction to the driving module, and the driving module enables the first photovoltaic louver assembly and the second photovoltaic louver assembly to realize angle adjustment according to the instruction sent by the control module. In another aspect of the present invention, there is provided a control method of a dynamic photovoltaic blind system, to which any of the above dynamic photovoltaic blind systems is app