WO2019027080A1

WO2019027080A1 - Method and system for controlling group of solar trackers

Info

Publication number: WO2019027080A1
Application number: PCT/KR2017/008826
Authority: WO
Inventors: 이재진
Original assignee: 성창통신 주식회사; (사)성창에너지연구소
Priority date: 2017-08-04
Filing date: 2017-08-14
Publication date: 2019-02-07

Abstract

A method for controlling a group of solar trackers according to the present invention comprises the steps of: a server receiving one or more information items among snowfall information and wind velocity information of a point in which a group of solar trackers are located; the server determining whether or not the received snowfall information exceeds a snowfall threshold or whether or not the wind velocity information exceeds a wind velocity threshold; if the snowfall information exceeds the snowfall threshold or if the wind velocity information exceeds the wind velocity threshold, the server transmitting, to the group of solar trackers, an inclination control signal of solar collector plates with respect to the group of solar trackers; and the group of solar trackers respectively adjusting the inclination of the solar collector plates in accordance with the inclination control signal.

Description

Control method and system of cluster solar tracker

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solar tracker for performing height adjustment and horizontal rotation of a solar light collecting plate such that a solar light collecting plate having a plurality of solar cells is directed toward the sun, And more particularly, to a method and system for controlling solar cluster trackers in the form of a cluster.

Recently, due to lack of energy and environmental pollution, development of environmentally friendly alternative energy is being sought. As one of them, the development and utilization of solar energy is rapidly progressing. As such alternative energy, various devices for utilizing solar energy, that is, solar (light) cells and solar heating devices, are being developed.

These solar energy is not only the source of energy for our daily life but also the driving force of various weather phenomena and currents in the sea. In addition, solar energy uses solar cells, solar water heater, solar house, There are many things such as the sun, the solar generator and so on.

Solar energy is a clean, renewable and infinite source of energy. Solar technology is a system technology that converts solar energy. Because there is no mechanical or chemical action in the energy conversion process, the structure of the system is simple, requiring little maintenance, long life span of 20 ~ 30 years, safe and environmentally friendly. In addition, the scale of power generation can be varied from residential to large-scale power generation.

In order to utilize the solar energy effectively during the development process, a solar tracker has been proposed in which a solar energy collector can track the direction of the sun.

However, there is no uniform control in the case of cluster solar trackers in which a plurality of solar trackers exist in a cluster form, and in particular, when appropriate tracking of the sun is delayed for a considerable time, There is a problem that it becomes more difficult to uniformly control the plurality of sensors. Further, when the weather is cloudy and the sunlight becomes weak, the change to the daytime mode or the nighttime mode is not smoothly performed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a method and system for controlling a plurality of solar phototrackers which can effectively control operation of the plurality of solar phototrackers in the form of a cluster.

According to another aspect of the present invention, there is provided a method of controlling a cluster solar tracker, the method comprising: receiving at least one of snowfall amount information and wind speed information at a location where the cluster solar trackers are located; Determining whether the snowfall amount information received by the server exceeds a snowfall amount threshold or whether the wind speed information exceeds a wind speed threshold; If the snow accumulation amount information exceeds the snow accumulation amount threshold or if the wind speed information exceeds the wind speed threshold, the server transmits a tilt control signal of the solar light collecting plate to the community solar trackers to the community solar trackers ; And adjusting the tilt of the solar light collecting plate, respectively, in accordance with the tilt control signal.

Wherein when the snowfall amount information exceeds the snowfall amount threshold, the cluster solar trackers adjust the inclination so that the solar light collecting plate approaches vertical or vertical in accordance with the tilt control signal, and the wind speed information The cluster solar trackers adjust the tilt so that the solar light collecting plate approaches horizontal or horizontal in accordance with the tilt control signal.

And a rotation control signal for causing the tilt of the solar light condensing plate to repeatedly rotate by a predetermined angle with respect to the horizontal axis in a state where the tilt of the sunlight condensing plate is close to vertical or vertical when the snowfall amount information exceeds the snowfall amount threshold, ; And repeating the step of rotating the tilt of each solar light collecting plate repeatedly by a certain angle in accordance with the rotation control signal.

According to another aspect of the present invention, there is provided a method for controlling a cluster solar tracker, comprising: determining whether a specific solar tracker located at the west of the cluster solar trackers is set to a day mode; If the specific solar tracker is set to the daytime mode, the server determines whether the azimuth of the specific solar tracker is oriented to the west by checking the azimuth of the particular solar tracker; If the specific solar tracker is directed to the west, the server determines whether the solar irradiance information at a location of the solar community trackers is lower than a solar irradiance reference value; And setting all of the military photovoltaic trackers including the specific sun and the tracker to the night mode if the irradiation amount information is lower than the solar radiation amount reference value.

According to another aspect of the present invention, there is provided a system for controlling a cluster solar tracker, the cluster solar tracker including a plurality of solar trackers in a cluster form; And a server for controlling the operation of the cluster solar photrackers. The server receives at least one of snow storm information or wind speed information at a location where the cluster solar photrackers are located, Determining whether or not the information exceeds a snowfall threshold or whether the wind speed information exceeds a wind speed threshold and if the snow snow depth information exceeds the snow depth threshold or the wind speed information exceeds the wind speed threshold, A tilt control signal of a solar light collecting plate for the trackers is transmitted to the cluster solar trackers, and the cluster solar trackers adjust the tilt of the solar light collecting plate in accordance with the tilt control signal.

Wherein the server controls a rotation control signal for causing the tilt of the solar light condensing plate to repeatedly rotate by a predetermined angle with respect to the horizontal axis in a state where the tilt of the sunlight condensing plate is close to a vertical or vertical direction when the snowfall amount information exceeds the snowfall amount threshold, And the cluster solar trackers repeatedly rotate the slope of the solar light collecting plate by a predetermined angle in accordance with the rotation control signal.

Wherein the server determines whether a specific solar tracker located at the westernmost of the cluster solar trackers is set to the daytime mode, and if the specific solar tracker is set to the daytime mode, Determines whether the azimuth angle of the specific solar tracker is directed to the west, and, if the specific solar tracker is directed to the west, determines whether the solar irradiance information at the point where the solar community trackers are located is lower than the solar irradiance reference value, And setting all of the cluster solar photrackers including the specific sun and the tracker to the night mode if the irradiation amount information is lower than the irradiation amount reference value.

Wherein the server displays status information of the cluster solar photons on a display screen.

According to the present invention, by adjusting the slope of the solar light collecting plate with respect to each of the cluster solar photrackers using at least one of snow accumulation amount information or wind speed information of the spot where the cluster solar photrackers are located, So that multiple solar trackers can be conveniently and efficiently controlled to minimize damage to the cluster solar trackers. In addition, by efficiently controlling the cluster solar trackers existing in a cluster form, it is possible to increase the generation performance of the cluster solar trackers.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a block diagram of one embodiment for explaining a control system of a cluster solar photracker according to the present invention.

2 is a block diagram of one embodiment for explaining a solar tracker of any of the cluster solar photrackers shown in FIG.

3 is a block diagram of an embodiment for describing the server shown in FIG.

FIG. 4 is a reference diagram showing an example of state information of the community solar trackers displayed on the display screen of the output unit in different patterns.

FIG. 5 is a flowchart of an embodiment for explaining a method of controlling the cluster solar photrackers according to the present invention.

FIG. 6 is a flow chart of another embodiment for explaining a method of controlling the cluster solar photrackers according to the present invention.

7 is a flowchart of still another embodiment for explaining a control method of the cluster solar photracker according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Referring to FIG. 1, the control system of the cluster solar photrackers includes a cluster solar photon 1 to N (10), a communication network 20, and a server 30.

1, the solar tracker 1 (11), the solar tracker 2 (12), or the solar tracker N (13) are arranged in the form of a cluster However, this is only an example. The cluster solar photon trackers 10 may detect their own power generation amount information, altitude information, azimuth information, GPS information, irradiation amount information, or wind velocity information, and transmit them to the server 30. To this end, the cluster solar photon trackers 10 are connected to the server 30 and the communication network 20, respectively.

The communication network 20 includes a wired communication network or a wireless communication network for transmitting and receiving data between the cluster solar photonic trackers 10 and the server 30. The wired communication network can be exemplified as a wired Internet. The wired Internet such as WiFi (wireless fidelity), WiBro (wireless broadband internet) or WiMax (world interoperability for microwave access), 3G mobile communication network, LTE long-term evolution network, 4G mobile communication network such as LTE-Advanced network, and 5G mobile communication network.

The server 30 is connected to the cluster solar photon trackers 10 via the communication network 920 described above and controls the operation of the cluster solar photon trackers 10. [ The server 30 can determine whether the cluster solar photodetectors 10 are abnormal by using the respective power generation amount information, the altitude information, or the azimuth information provided from the cluster solar photrackers 10. [ In addition, the server 30 can control the operation of the cluster solar photrackers 10 according to GPS information, wind velocity information, or meteorological information provided from the cluster solar photon trackers 10.

2 is a block diagram of one embodiment for illustrating a solar tracker 11 of any of the cluster solar photrackers 10 according to the present invention.

2, the solar tracker 11 includes a solar light collecting plate 100, a power generation amount detecting unit 102, an altitude sensor 104, an azimuth sensor 106, a GPS detecting unit 108, an illuminance sensor 110, A wind speed sensor 112, a controller 114, a tracker communication unit 116, an altitude adjustment drive unit 118, an azimuth adjustment drive unit 120, a tilt adjustment drive unit 122, and the like. The structure of the other

solar phototrackers

12, 13, etc. shown in Fig. 1 is the same as that of the solar phototracker 11 shown in Fig. 2, The description of each component is replaced with the description of the solar tracker 11. [

The solar light collecting plate 100 is a module in which a plurality of solar cell panels are combined. The structure and shape of the solar light collecting plate 100 can be variously changed at the level of a person skilled in the art.

The power generation amount detection unit 102 detects information about the power generation amount with respect to the solar light tracker 11. The power generation amount detection unit 102 can detect the generation amount information generated from the sunlight condensed in the solar light collecting plate 100 by time, day, month or year. The power generation amount detecting unit 102 may be an inverter (a generator) connected to the solar light collecting plate 100. The power generation amount detection unit 102 transmits the detected power generation amount information to the controller 114.

The altitude sensor 104 detects altitude information about the solar tracker 11. As the altitude sensor 104, an atmospheric pressure sensor can be exemplified, and the atmospheric pressure sensor can detect the altitude by measuring the atmospheric pressure corresponding to the altitude at which the solar tracker 11 is located. The altitude sensor 104 transmits the detected altitude information to the controller 114.

The azimuth sensor 106 detects azimuth information about the solar tracker 11. As an azimuth sensor, a geomagnetic sensor can be exemplified. The geomagnetic sensor is a sensor that detects the azimuth angle by sensing the magnetic field generated by the earth. The azimuth sensor 106 can detect the azimuth information of the sunbeam cracker 11 according to the direction of the geomagnetism and the vibration period. The azimuth sensor 106 transmits the detected azimuth information to the controller 114.

The GPS detection unit 108 detects GPS information about the solar tracker 11. To this end, the GPS detection unit 108 may include a GPS reception module that receives GPS signals from satellites. The GPS information detected by the GPS detection unit 108 may include altitude information or azimuth information of the solar tracker 11. [ The GPS detection unit 108 transmits the detected GPS information to the controller 114. [

The illuminance sensor 110 detects the solar radiation amount information of the spot where the cluster solar photrackers 10 are located. The illuminance sensor 110 can transmit the detected irradiation amount information to the controller 114. [ The illuminance sensor 110 may be a photoconductive sensor. Such a photoconductive sensor is a sensor whose internal resistance changes according to the amount of light. When the light amount increases, the internal resistance decreases. When the light amount decreases, the internal resistance increases. Types of photoconductive sensors include CdS sensors or PbS sensors. Although the illuminance sensor 110 is illustrated as a component of the solar tracker 11 in the present invention, the illuminance sensor 110 is not necessarily required to be included in the cluster solar trackers 10, Lt; / RTI > Also, the illuminance sensor 110 may have only one or a plurality of light sources at the positions where the cluster solar photrackers 10 are located.

The wind speed sensor 112 detects wind velocity information at a point where the community solar trackers 10 are located. The wind speed sensor 112 may include a rotating anemometer, a wind pressure anemometer, an ultrasonic anemometer, or the like depending on the method of measuring the wind speed. The wind speed sensor 112 can transmit the detected wind speed information to the controller 114. [ In the case of the wind speed sensor 112, the wind speed sensor 112 is not necessarily provided in the cluster solar trackers 10 but may be an independent module type It may exist. In addition, the wind speed sensor 112 may have only one or a plurality of wind speed sensors 112 at a location where the cluster solar trackers 10 are located.

The controller 114 is connected to the power generation amount detector 102, the altitude sensor 104, the azimuth sensor 106, the GPS detector 108, the illuminance sensor 110, the wind speed sensor 112, The altitude adjustment drive unit 118, the azimuth adjustment drive unit 120, or the tilt adjustment drive unit 122. The tracker communication unit 116, the altitude adjustment drive unit 118, For example, the controller 114 may control the tracker communication unit 116 to transmit detected power generation amount information, altitude information, azimuth information, GPS information, solar radiation amount information, wind speed information, and the like to the server 30.

The tracker communication unit 116 transmits power generation amount information, altitude information, azimuth information, GPS information, solar radiation amount information, wind speed information, and the like detected by the solar tracker 11 to the server 30 under the control of the controller 114. For this purpose, the tracker communication unit 110 may include a wired communication module or a wireless communication module that is connected to the server 30 through a wired communication network or a wireless communication network and supports a wired communication network or a wireless communication network.

The tracker communication unit 116 receives a signal for controlling the altitude adjustment driving unit 118, the azimuth adjustment driving unit 120 or the tilt adjustment driving unit 122 from the server 30 and outputs the received control signal to the controller 114 ). &Lt; / RTI > The controller 114 may output a drive control signal for the operation of the altitude adjustment drive unit 118, the azimuth adjustment drive unit 120, or the tilt adjustment drive unit 122 according to the received control signal.

The altitude adjustment driving unit 118 may adjust the altitude of the solar light collecting plate 100 according to the altitude adjustment driving value corresponding to the drive control signal of the controller 114. [ A power source for driving the height adjustment driving unit 118 may be supplied from the solar cell of the solar light collecting plate 100.

The azimuth angle adjustment driving unit 120 can adjust the azimuth angle of the solar light collecting plate 100 according to the azimuth angle driving value corresponding to the driving control signal of the controller 114. [ The power for driving the azimuth angle adjustment driving unit 120 may also be supplied from the solar cell of the solar light collecting plate 100. [

The tilt adjustment driving unit 122 may adjust the tilt of the solar light collecting plate 100 according to the tilt driving value corresponding to the driving control signal of the controller 114. [ A power source for driving the altitude adjustment driving unit 122 may also be supplied from the solar cell of the solar light collecting plate 100.

3 is a block diagram of an embodiment for describing the server shown in FIG.

Referring to FIG. 3, the server 30 may include a server communication unit 200, a database 202, a control unit 204, and an output unit 206.

The server communication unit 200 is connected to the cluster solar photonic trackers 10 through a wired communication network or a wireless communication network, respectively. The server communication unit 200 may support a wired communication protocol including a LAN, a WAN, or a wired Internet for connecting with the community solar trackers 10 through a wired communication network. Also, the server communication unit 200 can support a wireless communication protocol including a wireless Internet, a portable Internet, a 3G mobile communication network, a 4G mobile communication network, or a 5G mobile communication network for connecting with the community solar trackers 10 through a wireless communication network have.

The server communication unit 200 may transmit a first request signal to each of the cluster solar photrackers 10 to provide power generation amount information, altitude information, or azimuth information. Also, the server communication unit 200 can receive power generation amount information, altitude information, azimuth information, GPS information, and the like from each of the cluster solar photrackers 10. In addition, the server communication unit 200 may receive radiation amount information or wind speed information from an illuminance sensor or an air speed sensor located at a location where the cluster solar photodetectors 10 are located. In addition, the server communication unit 200 can receive weather information (for example, snowfall amount information, weather information, and the like) from a weather station server.

The database 202 stores network address information corresponding to each of the cluster solar photrackers 10. In addition, the database 202 may store power generation amount information, altitude information, azimuth information, and GPS information corresponding to each of the community solar trackers 10 received by the server communication unit 200. In addition, the database 202 may store solar radiation amount information, wind speed information, weather information of a meteorological office, and the like at a location where the cluster solar photrackers 10 are located.

The control unit 204 determines that the irradiation amount information provided from the illuminance sensor 110 at the location of the cluster solar photracker 10 is equal to or greater than the first irradiation amount reference value. For this, the control unit 204 requests the irradiation amount information to the illuminance sensor 110 located at the location of the cluster solar photrackers 10, receives the irradiation amount information provided from the illuminance sensor 110, Compare with solar radiation standard value. The first sunlight reference value refers to the amount of solar radiation that is the standard of sunny weather in daytime mode when the day is divided into day mode and night mode. Therefore, it is defined as clear weather in the case of the first sunlight amount reference value or more, and cloudy weather in the case of less than the first sunlight amount reference value.

The control unit 204 stores information on the first solar radiation reference value in an internal memory (not shown). The memory may include a main memory and an auxiliary memory. The main memory corresponds to a volatile memory in which data necessary for judging whether a solar radiation amount exceeds a reference value is temporarily stored, and the auxiliary memory corresponds to a nonvolatile memory in which an application program code for performing an operation of the control unit 204 is stored.

The control unit 204 outputs a first request signal for providing power generation amount information, altitude information, or azimuth information to the cluster solar photracker 10 if the irradiation amount information at the location of the cluster solar photrackers 10 is equal to or greater than the first radiation amount reference value (10). Accordingly, the server communication unit 200 transmits the first request signal to each of the cluster solar photrackers 10. If the solar radiation information of the spot where the solar light trackers 10 are located is equal to or more than the first solar radiation reference value, it corresponds to a clear weather. In such a weather, the generation amount information, the altitude information or the azimuth angle detected by the solar light trackers 10 The information is relatively accurate. Therefore, the control unit 204 controls to receive the information detected by the cluster solar photodetector 10 only in the clear weather.

The control unit 204 then calculates the average power generation amount information of the cluster solar photodetector 10 from the power generation amount information, the altitude information, and the azimuth angle information corresponding to each of the cluster solar photrackers 10 received by the server communication unit 200, Average altitude information or average azimuth information. To this end, the control unit 204 may be comprised of a logic circuit including at least one processing core and may include memory control logic.

The control unit 204 compares the calculated average power generation amount information, the average altitude information or the average azimuth information with the power generation amount information, the altitude information, or the azimuth information of each of the cluster photovoltaic trackers 10, It can be decided whether or not it is abnormal. For example, the control unit 204 compares the power generation amount information detected in each of the cluster solar photrackers 10 with the calculated average power generation amount information, and outputs the calculated average power generation amount information to the cluster solar photracker 10, It can be determined that the operation is abnormal. That is, if power generation amount information lower than the power generation amount threshold range is detected in comparison with the average power generation amount information in the case where the solar radiation amount is equal to or more than the reference value, the solar light tracker having such power generation amount information can perform normal solar tracker operation as compared with other solar light trackers You can decide that you are not losing. The abnormality of the solar tracker may be the damage of the solar light collecting plate or the failure of the inverter which converts the light condensed on the solar light collecting plate into the electric energy. In addition, the control unit 204 compares the calculated altitude information with the altitude information detected in each of the cluster solar photrackers 10, and outputs the calculated altitude information to the cluster solar photracker It can be determined that the operation is abnormal. That is, if altitude information deviating from the altitude threshold range is detected in comparison with the average altitude information in the case where the solar radiation amount is equal to or higher than the reference value, the solar tracker having such altitude information has a normal solar tracker operation as compared with other solar trackers You can decide that you are not losing. In addition, the controller 204 compares the azimuth information detected by each of the cluster solar photodetes 10 with the calculated average azimuth information, and outputs the azimuth information to the community solar tracker It can be determined that the operation is abnormal. That is, if azimuth information that deviates from the azimuth threshold range is detected in comparison with the average azimuth information in the case where the solar radiation amount is equal to or more than the reference value, the solar optical tracker having such azimuth information has a normal solar tracker operation as compared with other solar optical trackers It can be determined that it is not.

The control unit 204 may control the output unit 206 to display status information of the cluster solar photodetectors 10. [ For example, the control unit 204 compares the power generation amount information of each of the cluster solar photrackers 10 with the maximum power generation amount information of the cluster solar photrackers 10 to determine the power generation efficiency of each cluster solar photracker 10 Can be calculated. Accordingly, the control unit 204 may control the output unit 206 to display the efficiency of the cluster solar photon trackers by changing the color according to the calculated power generation efficiency. In addition, the controller 204 may control the output unit 206 to display state information on whether or not the cluster solar photodetectors 10 are abnormal, in a color-coded manner.

The control unit 204 may generate a second request signal for providing GPS information for each of the cluster solar photrackers 10 if the irradiation amount information at the location of the cluster solar photrackers 10 is less than the first irradiation amount reference value To each of the cluster solar photovoltaic trackers (10). If the solar radiation information of the spot where the solar light trackers 10 are located is less than the first solar radiation standard value, it corresponds to cloudy weather. In such a weather, the generation amount information, the altitude information or the azimuth angle detected by the solar photovoltaic trackers 10 The information may not be accurate. Accordingly, in the case of cloudy weather, the control unit 204 requests relatively accurate GPS information regardless of the weather among the information detected in the cluster solar photrackers 10. [ The cluster solar photon trackers 10 respectively detect GPS information according to the second request signal transmitted from the server 30 and transmit the detected GPS information to the server 30. The control unit 204 may then use the GPS information transmitted from each of the cluster solar photonics trackers 10 to control the altitude and azimuth angle of each of the cluster solar trackers 10. When the control unit 204 controls the server communication unit 200 to transmit the control signal for adjusting the altitude or the azimuth to the community solar trackers 10, the server communication unit 200 transmits the control signal to the community solar trackers 10, respectively. Accordingly, the community solar trackers 10 receiving the control signal can adjust the altitude or the azimuth angle by driving the altitude adjustment drive unit 118 or the azimuth adjustment drive unit 120 according to the control signal.

Upon receiving the weather information (for example, snowfall amount information) at the location of the cluster solar trackers 10 from the weather station server, the control unit 204 determines whether the received snowfall amount information exceeds the snowfall amount threshold . The control unit 204 may control the first tilt control signal of the solar light collecting plate 100 for the cluster solar photracker 10 to be output to the cluster solar photracker 10 if the snow accumulation amount information exceeds the snowfall amount threshold, . Accordingly, when the server communication unit 200 transmits the first tilt control signal, the community solar trackers 10 receiving the first tilt control signal drive the tilt adjustment driving unit 122 according to the first tilt control signal The inclination of the solar light collecting plate 100 can be adjusted. If the snow accumulation amount information exceeds the snow accumulation amount threshold, the solar light trackers 10 may be damaged due to the snow load accumulated on the solar collecting solar collecting plate 100. In order to prevent this, when the control unit 2040 transmits a first tilt control signal to the cluster solar photrackers 10 so that the tilt of the solar light collector plate 100 approaches vertical or vertical, the cluster solar photrackers 10 Can vertically tilt the solar light collecting plate 100 according to the first tilt control signal, thereby preventing snow accumulation.

If the snow accumulation amount information exceeds the snow accumulation amount threshold, the control unit 204 controls the rotation of the solar light collecting plate 100 so that the inclination of the solar light collecting plate 100 is repeatedly rotated by a predetermined angle with respect to the horizontal axis, To the community solar trackers (10). Accordingly, when the server communication unit 200 transmits the rotation control signal, the community solar trackers 10 receiving the rotation control signal drive the tilt adjustment driving unit 122 in accordance with the rotation control signal, ) Can be repeatedly rotated by a predetermined angle with respect to the horizontal axis.

Upon receiving the wind speed information from the wind speed sensor, the control unit 204 determines whether the received wind speed information exceeds the wind speed threshold. The control unit 204 may control the second tilt control signal of the solar light collecting plate 100 for the cluster solar photracker 10 to the community solar trackers 10 if the wind speed information exceeds the wind speed threshold . Accordingly, when the server communication unit 200 transmits the second tilt control signal, the community solar trackers 10 receiving the second tilt control signal drives the tilt adjustment driving unit 122 to drive the solar light condensing plate 100, Can be adjusted. If the wind speed information exceeds the wind speed threshold, the solar light collecting plate 100 may be damaged by the wind. To prevent this, when the control unit 204 transmits a second tilt control signal to the cluster solar trackers 10 to make the tilt of the solar light collecting plate 100 approach horizontal or horizontal, the cluster solar trackers 10 can tilt the solar light collecting plate 100 horizontally according to the second tilt control signal, thereby minimizing the influence of wind.

The control unit 204 controls the operation of the cluster solar trackers 10 according to whether the operation mode of the specific solar tracker located at the westernmost of the cluster solar photrackers 10 is the daytime mode or the nighttime mode . For example, the control unit 204 determines whether the operation mode of the specific solar tracker located at the westernmost of the cluster solar photrackers 10 is set to the daytime mode. If the operation mode of the specific solar tracker is set to the day mode, the control unit 204 determines whether the azimuth angle of the specific solar tracker is directed to the west from the azimuth angle information detected from the azimuth sensor 106 of the specific solar tracker. In order to confirm the azimuth angle, the control unit 204 may transmit azimuth information request signal to a specific solar tracker, and may receive the azimuth information in response thereto. If the azimuth angle of the specific solar tracker is directed to the west, the control unit 204 determines that the solar radiation amount information detected by the illuminance sensor at the position where the specific solar tracker is located is less than the second solar radiation amount reference value. In order to confirm the irradiation dose, the control unit 204 may transmit the request signal of the irradiation amount information to the illuminance sensor at the position where the specific solar tracker or the cluster solar tracker 10 is located, and receive the irradiation amount information in response thereto . If the received irradiation amount information is less than the second irradiation amount reference value, the control unit 204 controls the setting change so that all the cluster solar photrackers 10 including the specific solar tracker operate in the night mode. Here, the second solar radiation reference value refers to an amount of solar radiation that serves as a reference for distinguishing a day of the week and a night. Therefore, it is defined as a daytime mode when the second solar radiation amount is greater than or equal to the second solar radiation amount reference value, and is defined as a nighttime mode if the second solar radiation amount is less than the second solar radiation amount reference value. For example, the second sunlight reference value may be 10 (Lux), but is not limited thereto. When the server communication unit 200 transmits the mode change control signal of the control unit 204 to the cluster solar photrackers 10, the cluster solar photrackers 10 can transmit the solar light to the nighttime mode The direction of the condenser plate 100 is adjusted. In the night mode, the azimuth angle of the solar light collecting plate 100 is oriented to the east, and the inclination of the solar light collecting plate 100 is tilted close to a vertical direction.

The output unit 206 can display the status information of the cluster solar photrackers 10 on the display screen. At this time, state information on the cluster solar photon trackers 10 can be displayed in different colors.

4 is a reference view showing an example of state information of the community solar trackers displayed on the display screen of the output unit 206 in different patterns. Referring to FIG. 4, as information on the status of the solar photovoltaic trackers 10, information on the solar power generation amount or alarm information on the abnormality is stored in a pattern (for example, color, brightness, shape, etc.) Can be displayed. For example, the efficiency of the solar photovoltaic trackers 10 can be displayed by varying the color according to the power generation efficiency of each of the solar photovoltaic trackers 10, and when the color is red, , And in the case of blue, the minimum generation amount can be shown. In addition, the output unit 206 may display state information on whether or not the cluster solar photodetectors 10 are abnormal in a pattern-separated manner.

The server compares the solar irradiance information of the spot where the solar photovoltaic trackers are located with the first solar irradiance reference value (step S300). To do this, the server requests the solar radiation information from an illuminance sensor located at the spot where the solar photovoltaic trackers are located, receives the solar radiation amount information provided from the ambient light sensor, and compares it with the first solar radiation amount reference value.

After step S300, if the solar radiation information of the spot where the solar PV trackers are located is equal to or greater than the first solar radiation reference value, the server sends a first request signal to each of the solar PV trackers to provide power generation information, altitude information or azimuth information (Step S302).

After step S302, the cluster solar trackers detect at least one of their power generation amount information, altitude information, and azimuth information, respectively, and transmit the detected power generation amount information, altitude information, or azimuth information to the server, respectively (S304).

After step S304, the server calculates the average power generation amount information, the average altitude information, or the average azimuth information from the power generation amount information, the altitude information, or the azimuth information of each cluster solar photon tracker in step S306. The server can calculate the average power generation amount information, the average altitude information, or the average azimuth information by dividing the power generation amount information, the altitude information, or the azimuth information of each cluster solar photracker by the number of the corresponding solar photovoltaic trackers.

After step S306, the server compares the calculated average power generation amount information, the average altitude information or the average azimuth information with the power generation amount information, the altitude information, or the azimuth information, respectively, detected from the cluster solar trackers, (Step S308). For example, the server compares the power generation amount information detected in each of the cluster solar photrackers with the calculated average power generation amount information, and determines the operation abnormality for the cluster solar photracker that deviates from the critical range of the average power generation amount information according to the comparison result . The server also compares the altitude information detected in each of the cluster solar photrackers with the calculated average altitude information and determines that it is abnormal for the cluster solar tracker that deviates from the critical range in comparison with the average altitude information have. In addition, the server compares the azimuth information detected by each of the cluster solar trackers with the calculated average azimuth information, and determines the operation abnormality for the cluster solar tracker that deviates from the average azimuth information according to the comparison result have.

After step S308, the server displays the status information of the cluster solar photons on the display screen (step S310). The server can calculate the power generation efficiency of each cluster solar photracker by comparing the power generation information of each cluster solar photracker with the maximum power generation information of the cluster solar photracker. Accordingly, the server can display the efficiency of the cluster solar trackers by changing the color according to the calculated power generation efficiency. In addition, the server can display status information on whether the cluster solar trackers are abnormal by color-coded.

After step S310, the server controls the altitude and azimuth angle of each of the cluster solar trackers according to the status information of the cluster solar trackers (step S312). If it is determined that there is an abnormality among the cluster solar photon trackers, the server may control the altitude and azimuth angle of each of the ideal solar photon trackers based on the average altitude information or the average azimuth information for the malfunctioning solar trackers . When the server transmits a control signal for adjusting the altitude or azimuth to the solar trackers having an abnormality, the solar trackers receiving the control signal drive the altitude adjustment drive unit or the azimuth adjustment drive unit according to the control signal, Can be adjusted.

On the other hand, in step S300, if the solar irradiance information of the spot where the solar photovoltaic trackers are located is less than the first solar radiation reference value, the server transmits a second request signal for providing GPS information for each of the solar photovoltaic trackers, (Step S314). If the solar radiation information at the spot where the cluster solar trackers are located is below the first solar radiation criterion, it is cloudy. Thus, in case of cloudy weather, the server requests relatively accurate GPS information, regardless of weather, among the information detected in the cluster solar photrackers.

After step S314, the cluster solar trackers respectively detect GPS information and transmit the detected GPS information to the server (step S316).

After step S316, the server controls the altitude and the azimuth angle of each of the cluster photovoltaic trackers using the GPS information of each of the cluster photovoltaic trackers (step S318). The server detects altitude information or azimuth information from GPS information transmitted from each cluster solar photon tracker and transmits control signals corresponding to the detected altitude information or azimuth information to the cluster solar trackers, respectively. Accordingly, the community solar trackers receiving the control signal can adjust the altitude or the azimuth angle by driving the altitude adjustment drive unit or the azimuth angle adjustment drive unit according to the control signal.

The server receives at least one of snowfall amount information and wind speed information of the spot where the cluster solar photrackers are located (S400). The server may receive weather information (e.g., snowfall information) at the location of the cluster solar trackers from the weather station server. In addition, the server can receive the wind speed information at the corresponding position from the wind speed sensor located at the position where the cluster solar trackers are located. The server can receive weather information or wind speed information periodically or aperiodically.

After step S400, the server determines whether the received snowfall amount information exceeds the snowfall amount threshold or whether the wind speed information exceeds the wind speed threshold (step S402). The snowfall threshold can be defined as the weight of the snow with a load to the extent that the solar trackers can be broken. Also, the wind speed threshold can be defined as the wind intensity to the degree that the solar trackers can be broken.

If the snowfall amount information exceeds the snowfall amount threshold or the wind speed information exceeds the wind speed threshold after step S402, the server transmits a tilt control signal of the solar light collecting plate to the cluster solar trackers to the cluster solar trackers (S404 step). The server transmits the first tilt control signal of the solar collector to the cluster solar trackers if the snowfall amount information exceeds the snowfall threshold. The first tilt control signal is a tilt control signal that causes the solar light collecting plate to approach vertical or vertical. When the snowfall amount information exceeds the snowfall amount threshold, the server transmits a rotation control signal for causing the solar light collecting plate to repeatedly rotate by a predetermined angle with respect to the horizontal axis in a state where the inclination of the sunlight collecting plate is close to vertical or vertical, Lt; / RTI > The server also transmits a second tilt control signal of the solar concentrator to the cluster solar trackers if the wind speed information exceeds the wind speed threshold. The second tilt control signal is a tilt control signal that causes the solar light collecting plate to approach horizontally or horizontally.

After step S404, in accordance with the first tilt control signal, the second tilt control signal, or the rotation control signal, the cluster solar trackers respectively adjust the solar concentrator (step S406). Upon receipt of the first tilt control signal from the server, the cluster solar trackers drive the tilt adjustment driver according to the first tilt control signal to adjust the tilt of the solar light collector to be close to vertical or vertical. In addition, upon receiving the rotation control signal from the server, the cluster solar trackers drive the tilt adjustment driving unit to rotate the tilt of the solar light collecting plate repeatedly by a predetermined angle with respect to the horizontal axis. In addition, upon receiving the second tilt control signal from the server, the cluster solar trackers drive the tilt adjustment driving unit in accordance with the second tilt control signal to adjust the tilt of the solar light condensing plate to be horizontal or nearly horizontal.

The server determines whether a particular solar tracker located at the west of the cluster solar tracker is set to the day mode (S500). The server checks whether the preset mode for the specific solar tracker is the daylight mode.

After step S500, if the specific solar tracker is set to the daytime mode, the server checks the azimuth of the specific solar tracker (step S502), and determines whether the azimuth of the specific solar tracker is facing west (step S504). The server determines whether the azimuth angle of the specific solar tracker is directed to the west from the azimuth information detected from the azimuth sensor of the specific solar tracker. In order to confirm the azimuth angle, the server can transmit azimuth information request signal to a specific solar tracker, receive azimuth information in response thereto, and determine whether the azimuth angle of a particular solar tracker is facing west.

After step S504, if the specific solar tracker is oriented to the west, the server confirms the solar radiation information of the spot where the solar solar trackers are located (step S506), and determines whether the confirmed solar radiation information is lower than the second solar radiation reference value S508). In order to confirm the solar radiation information of the spot where the solar trackers are located, the server can transmit the request signal of the irradiation information to the illuminance sensor at the spot where the specific solar tracker or cluster solar tracker is located, Lt; / RTI > The server determines that the irradiance information detected by the illuminance sensor at the position where the specific solar tracker is located is less than the second radiation dose reference value. Here, the second solar radiation reference value refers to an amount of solar radiation that serves as a reference for distinguishing a day of the week and a night. Therefore, it is defined as a daytime mode when the second solar radiation amount is greater than or equal to the second solar radiation amount reference value, and is defined as a nighttime mode if the second solar radiation amount is less than the second solar radiation amount reference value.

After step S508, if the irradiation amount information is lower than the second irradiation amount reference value, the server sets all of the cluster solar photon trackers including the specific sun and the tracker to the night mode (step S510). If the received solar irradiance information is less than the second solar irradiance standard, the server sends a mode change control signal to the cluster solar trackers to cause all cluster solar photrackers, including the particular solar tracker, to operate in night mode. When the server sends a mode change control signal, the cluster solar trackers adjust the direction of the solar light collector in the night mode according to the received mode change control signal. For example, the cluster solar trackers are adjusted so that the azimuth of the sunlight collector faces east and that the tilt of the sunlight collector approaches vertical or vertical.

The present invention has been described above with reference to the embodiments. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. Therefore, the disclosed embodiments should be considered in an illustrative rather than a restrictive sense. Therefore, the scope of the present invention is not limited to the above-described embodiments, but should be construed to include various embodiments within the scope of the claims and equivalents thereof.

Claims

A method for controlling a plurality of solar trackers in a cluster, the method comprising:

Receiving information on at least one of snowfall amount information and wind velocity information of a spot where the cluster solar photrackers are located;

Determining whether the snowfall amount information received by the server exceeds a snowfall amount threshold or whether the wind speed information exceeds a wind speed threshold;

If the snow accumulation amount information exceeds the snow accumulation amount threshold or if the wind speed information exceeds the wind speed threshold, the server transmits a tilt control signal of the solar light collecting plate to the community solar trackers to the community solar trackers ; And

Wherein the cluster solar trackers each adjust the slope of the solar concentrator according to the tilt control signal.
The method according to claim 1,

And when the snowfall amount information exceeds the snowfall amount threshold, the cluster solar trackers adjust the tilt so that the solar light collecting plate approaches vertical or vertical according to the tilt control signal,

Wherein when the wind speed information exceeds the wind speed threshold, the cluster solar trackers adjust the slope so that the solar concentrator approaches the horizontal or horizontal in accordance with the tilt control signal. Way.
The method according to claim 1,

And a rotation control signal for causing the tilt of the solar light condensing plate to repeatedly rotate by a predetermined angle with respect to the horizontal axis in a state where the tilt of the sunlight condensing plate is close to vertical or vertical when the snowfall amount information exceeds the snowfall amount threshold, ; And

Further comprising the step of repeatedly rotating the tilt of each solar light collecting plate by a certain angle in accordance with the rotation control signal.
A method for controlling a plurality of solar trackers in a cluster, the method comprising:

Determining whether a particular solar tracker located at the west of the cluster solar trackers is set to a day mode;

If the specific solar tracker is set to the daytime mode, the server determines whether the azimuth of the specific solar tracker is oriented to the west by checking the azimuth of the particular solar tracker;

If the specific solar tracker is directed to the west, the server determines whether the solar irradiance information at a location of the solar community trackers is lower than a solar irradiance reference value; And

And setting all of the military photovoltaic trackers including the specific sun and the tracker to the night mode if the irradiation amount information is lower than the solar radiation threshold.
Cluster solar trackers in which a plurality of solar trackers are present in a cluster; And

A server for controlling the operation of the cluster solar photrackers,

The server receives at least one of snow accumulation amount information or wind speed information at a location where the cluster solar photon trackers are located, determines whether the received snow accumulation amount information exceeds a snow accumulation amount threshold, or whether the wind speed information is a wind speed threshold And if the snowfall amount information exceeds the snowfall amount threshold or if the wind speed information exceeds the wind speed threshold value, a tilt control signal of the solar light collecting plate for the solar collecting solar trackers, To the trackers,

Wherein the cluster solar trackers adjust the slope of the solar concentrator according to the tilt control signal.
The method of claim 5,

And when the snowfall amount information exceeds the snowfall amount threshold, the cluster solar trackers adjust the tilt so that the solar light collecting plate approaches vertical or vertical according to the tilt control signal,

Wherein when the wind speed information exceeds the wind speed threshold, the cluster solar trackers adjust the slope so that the solar concentrator approaches the horizontal or horizontal in accordance with the tilt control signal. system.
The method of claim 5,

The server comprises:

And a rotation control signal for causing the tilt of the solar light condensing plate to repeatedly rotate by a predetermined angle with respect to the horizontal axis in a state where the tilt of the sunlight condensing plate is close to vertical or vertical when the snowfall amount information exceeds the snowfall amount threshold, Lt; / RTI >

The cluster solar trackers,

And the tilt of the solar light collecting plate is repeatedly rotated by a predetermined angle in accordance with the rotation control signal.
The method of claim 5,

The server comprises:

Determining whether a specific solar tracker located at the west of the cluster solar photonics tracker is set to a daytime mode and, if the specific solar tracker is set to the daytime mode, checking the azimuth of the specific solar tracker, Determining whether the azimuth angle of the specific solar tracker is directed to the west and, if the specific solar tracker is facing west, determining whether the solar irradiance information at the location of the community solar trackers is lower than the solar irradiance reference value, And sets all of the cluster solar photrackers including the specific sun and the tracker to a night mode if the sunlight is below the solar radiation threshold.
The method of claim 5,

The server comprises:

And displays state information of the community solar trackers on a display screen.