KR101349127B1 - Pv or cpv system having a center control apparatus - Google Patents

Abstract

A photovoltaic power generation system having a central control unit is disclosed. The present invention divides the solar cell module into one or more groups, each group is composed of two or more solar cell modules, using a single central control unit to control the solar cell module of the entire group at the same time, or control by selected group or By configuring each solar cell module to be controlled in the selected group, it is possible to operate the solar power system with simple facilities and low cost.

Description

Photovoltaic power generation system with one central controller {PV OR CPV SYSTEM HAVING A CENTER CONTROL APPARATUS}

The present invention relates to a photovoltaic power generation system, and more particularly, one central controller and one so as to organize the individual solar cell modules into groups and to control the solar cell modules as a whole, or selected groups, or individually. The present invention relates to a photovoltaic power generation system having a central control unit using a tracking sensor.

Generally, solar power generation refers to a power generation system that converts sunlight directly into electric power by a solar cell.

That is, photovoltaic power generation is different from solar power generation that receives energy from sunlight and generates energy by using heat, and thus, electricity is directly generated from a solar cell made of a semiconductor material under sunlight.

Photovoltaic power generation is a power generation method using a solar cell that generates photovoltaic power by photoelectric effect when light is irradiated. The general configuration includes a module composed of a solar cell, a storage battery, and a power converter. It is composed.

This conventional photovoltaic technology is shown in FIG. 1.

Referring to the drawings, an individual sensor 10 is attached to the solar panel 20 and a driving unit 30 for driving each of the solar panel 20 is individually controlled or connected to a network such as a gateway 40. Is configured to monitor the situation in the web server 50 and to drive the individual drive unit (30).

Such photovoltaic power generation is classified into fixed type, fixed variable type, single axis tracking type, and dual axis tracking type according to the installation type of the solar cell module.

The fixed type is a solar cell module fixedly installed toward the south, and the solar light module is effectively developed in the afternoon with good sunshine, but there is a problem of insufficient power generation for the incident sunlight from the side wall. At the same time, the efficiency of power generation is difficult to expect.

In the case of the fixed variable type, the solar cell module is fixed toward the south, and divided into several times a year according to the change of the height of the solar cell module to change the upper and lower angles.

The single axis type (short axis type) refers to the orientation tracking method in which the angle is changed in units of time so that the solar cell module can be rotated from east to west according to the movement trajectory of the sun. The battery module rotates from east to west along the movement trajectory of the sun, and is an altitude tracking tracking method that changes the upper and lower angles.

Such a power generation system is used by mixing each sensor and program in order to increase efficiency, but in the conventional method, a plurality of driving units, a plurality of sensors, and a controller for controlling each solar panel must be provided.

In addition, the maximum power generation efficiency is obtained when the solar panel is maintained at a right angle to the incident angle of the solar light, so that the solar power generation system changes over time and seasonally so that the solar panel receives enough sunlight. A problem arises in that a solar position tracking device called a "tracker" must be individually installed so as to automatically track the position of the sun.

The installation of such a tracker does not simply add an additional factor to the configuration, but accommodates the overall load of the solar panel to accommodate the solar tracking function, but also to external forces (especially strong winds, typhoons and gusts) applied to the solar panel. Due to the need for a structure having sufficient durability against wind pressure, etc.), the addition of a tracker is a real problem in the solar power generation system.

The present invention for solving this problem is to provide a photovoltaic power generation system having a central control unit that can control the entire system using one sensor and one controller.

It is another object of the present invention to provide a photovoltaic power generation system having a central control unit that can control the solar cell module in groups or individually.

In another aspect, the present invention is to provide a photovoltaic power generation system having a central control device capable of tracking using a sensor and automatic tracking by a program.

In addition, the present invention can be tracked by daily, monthly, seasonal, quarterly, separate safety mode control in case of typhoon or heavy snow, and solar power generation system equipped with a central control unit capable of predictive control by receiving weather data To provide another purpose.

Another object of the present invention is to provide a photovoltaic power generation system having a central control unit capable of remotely controlling the function of the central control unit.

Central control for driving a solar cell module having a solar panel for producing power by the sunlight of the present invention for performing this task, a drive unit for driving the solar panel up, down, left and right and an interface for receiving a control signal In a photovoltaic power generation system having a device, the solar cell module is divided into one or more groups, each group consisting of two or more solar cell modules, and the individual solar cell modules of each group are electrically connected to each other by a group line. The central controller may be achieved by controlling the driving unit to simultaneously control the solar cell modules of the entire group, to control the selected groups, or to control each solar cell module in the selected group. .

The central control unit may select a selection button for selecting the solar cell module by whole or group, an automatic mode for automatically driving the selected whole or selected group of solar cell modules, and a manually operated manual mode. It is preferable to display a group control graphic user interface, and if the group is selected, further display an individual control graphic user interface for controlling individual solar cell modules grouped into small groups within the group.

The individual control graphic user interface is composed of an automatic mode for automatically driving an individual solar cell module, a graphic user interface (Graphic User Interface) selectable including a manually operated manual mode or a stop mode, and central control. The device is configured to track control the solar cell modules simultaneously, group by group or individually using one tracking sensor.

In addition, the central control unit is configured to enable tracking control by selecting control signals for daily, monthly, seasonal or quarterly, and to perform a predictive control function by receiving a safety mode control function and weather data that can be controlled during a typhoon or heavy snowfall. It is more preferable that the tracking control be controllable by one-axis tracking that tracks the orientation or two-axis tracking that tracks the elevation and the orientation.

And a web monitoring central control unit connected to a network with the central control unit and remotely controllable. The web monitoring central control unit is remotely connected to the central control unit so that the solar cell module can be checked, controlled, or set in operation at the same time, group by group, or individually.

Therefore, according to the photovoltaic power generation system having the central control device of the present invention, since the entire system can be controlled using one sensor and one central control device, the solar power generation system can be driven at a simple facility and at a low cost. It can be effective.

In addition, according to the photovoltaic power generation system having the central control device of the present invention, the solar cell module can be divided into one or more groups to control group by group, whole or individual.

In addition, according to the photovoltaic power generation system having a central control device of the present invention, since the central control device can be configured to enable automatic tracking by a sensor and a program, it is possible to control the solar power generation system more efficiently. have.

In addition, according to the photovoltaic power generation system provided with the central control apparatus of the present invention, it is possible to automatically or manually track the position of the sun that changes over time and seasons can be expected efficient power generation efficiency.

In addition, according to the photovoltaic power generation system having the central control device of the present invention, since the central control device can be controlled at a remote location through a network, the photovoltaic power generation system can be efficiently carried out through real-time monitoring at a remote location without having to be in the field. There is a controllable effect.

1 is a main configuration of a conventional solar power system,
2 is a schematic configuration diagram of a photovoltaic power generation system of the present invention;
3 is a main configuration of the photovoltaic power generation system of the present invention,
4 is a GUI screen displaying the control screen of the individual tracking device,
And,
5 is a GUI screen displaying a control screen of the entire tracking device.

It is to be understood that the words or words used in the present specification and claims are not to be construed in a conventional or dictionary sense and that the inventor can properly define the concept of a term in order to describe its invention in the best possible way And should be construed in light of the meanings and concepts consistent with the technical idea of the present invention.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise. It should be noted that the terms such as " part, "" module, " .

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

Figure 2 is a schematic configuration diagram of the photovoltaic power generation system of the present invention, Figure 3 is a main configuration diagram of the photovoltaic power generation system of the present invention, as shown, a photovoltaic power generation system having a central control device of the present invention 100 is a solar cell module 110 composed of a plurality of solar panels 112 and a driving unit 114 for driving each of the solar panels 112 in the up and down sin, one sensor 120, and one central It comprises a control device 130 and the central control device 130 may be connected to the web server central control unit 170 and the network.

The solar panel 112 is configured of a solar cell that generates power by ordinary sunlight in the form of a panel, and each solar panel 112 is configured to track sunlight manually or automatically by the driving unit 114.

To this end, the driving unit 114 uses vertical and horizontal driving motors (not shown) for actual solar power generation by driving the solar panel 112. In general, the vertical driving motor is a vertical rotating plate and the height of the solar panel 112 is increased. It is used to adjust, the horizontal drive motor (not shown) is used to adjust the azimuth angle of the solar panel 112 to the horizontal rotating plate.

In addition, the sensor 120 measures the inclination of the solar panel 112 and detects the inclination of the vertical rotating plate and the azimuth angle of the solar panel 112 so that it can be transmitted to the central control unit 130 to control the central control unit 130. It can be configured to include a sensor for detecting the azimuth angle of the horizontal rotating plate to deliver.

In addition, the present invention has the purpose of controlling the entire system using one sensor and one central control unit, in principle to use a combination of the tracking using the sensor and the program automatic tracking method in order to develop a high efficiency. In addition, in the tracking, it is possible that both the orientation tracking (one axis), the altitude, and the orientation tracking (two axes) are possible.

To this end, the sensor 120 has a low altitude proximity sensor and a high altitude proximity sensor in the low altitude and high altitude state of the solar panel 110, and also includes a west proximity sensor and an east proximity sensor, and the solar panel 110. Detecting that it is coming to the west end, or to the east end, and transmitted to the central control unit 130 can track the sun more efficiently.

Since the above-described driving unit and the sensor have a general configuration, detailed description thereof will be omitted.

On the other hand, in order to be able to drive the solar panel 112 with one central control unit 130 in the present invention, the solar cell module 110 composed of the solar panel 112 and the drive unit 114 in one or more groups. Each group is divided into two or more solar cell modules 110, the individual solar cell module 110 of each group is configured to be electrically connected to each other by a group line 132, the central control unit 130 The driving unit 114 is controlled to control the solar cell modules 110 of the entire group at the same time, to control the selected groups, or to control each solar cell module in the selected group.

To this end, the driving unit 114 is provided with a control unit wired and wireless interface unit for interfacing with the central control unit 130 and wired and wireless communication methods such as RS-232C, RS-485, RF (FM, Bluetooth, Zigbee), PLC, and identification code. Can be given.

Such an identification code may be given a group identification number and an individual identification code at the same time.

Referring to the individual identification code 212 of the GUI screen of FIG. 5, the individual solar cell module 110 has "A-1-1" as the identification code, which is "A-1" in the "A" group. Grouped into subgroups of " A-1 " and having the first individual identification code " A-1-1 "

That is, referring to the drawings, it is understood that the group "A" is classified into seven subgroups of "A-1" to "A-7" and the group "A-1" is further classified into six individual solar cell modules. Can be.

Therefore, when the "A" group is selected in the central controller 130, all the solar cell modules 110 in the "A-1" to "A-7" group are electrically connected to respond to the call or operate. When the predetermined individual solar cell module 110 in the 1 "group is selected, the corresponding solar cell module 110 is configured to respond or control operation.

To this end, the driving unit 114 is configured to be electrically connected to the central control unit 130 by a UTP cable.

Unshielded Twisted Pair (UTP) cables are the most common type of copper telephone line and require multiple connections, so use two or more pairs of twisted pairs in a single cable. The UTP cable is different in the number of pairs of twisted pairs required according to the application, such as analog, digital and Ethernet, but in the present invention, 8 pin UTP cable is to be used.

 The UTP cable consists of 8 wires and the central controller 130 uses the direct cable method or the cross cable method in the general Ethernet environment. It is possible to control automatically or manually, and to control all solar cell modules in the selected group at the same time automatically or manually, and to enable automatic or manual control of individual solar cell modules even in the selected group.

To this end, a graphic user interface (Graphic User Interface) is displayed on the central control unit so that it can be easily controlled.

Referring to the GUI screen displaying the control screen of the individual tracking device of Figure 4 and the GUI screen showing the control screen of the entire tracking device of Figure 5, the entire control screen is an individual control screen for controlling the individual solar cell module 210 ) And the group control screen 220 are displayed at the same time.

First, the group control screen 220 displays a group select key 224 for selecting a group at the bottom and a select all 223 for selecting all solar modules at the same time. Key screens for driving are displayed.

The key screen is the East-North South-North adjustment key (EAST, WEST, SOUTH, NORTH) and STOP key (STOP) 222 for rotating each drive unit to the north, south, east and west, and the automatic mode selection key for automatically driving the solar cell module in the selected group. (AUTO), a manually operated manual mode selection key (MANUAL), a safety mode selection key (SNOW) to operate in safe mode in bad weather, an operation key (EMERG.) In case of abnormal operation or accident and back tracking selection It displays the key (BACKTR) and so on so that the user can select the enemy and control it quickly.

In addition, the individual control screen 210 to display all the solar cell modules in the group in the selection in order, divided into large groups (A ~ D) and in the large group (A) again to small groups (A-1 to A-7) Group the battery modules to display them.

Referring to FIG. 5, when the "A" group is selected in the group control screen 220 on the right, the small group designated as "A" as the large group is displayed on the left screen as "A-1, A-2, ..., A-7". When the "A-1" group is selected and the "A-1" group is selected, the individual solar cell modules belonging to the "A-1" group are displayed as "A-1-". 1, A-1-2, ~, A-1-6 "and so on, so that individual solar cell module can be selected and controlled within the selected group.

Referring to the individual control screen of FIG. 4, an automatic mode selection key (AUTO) and a manually operated manual mode selection key for automatically driving the corresponding solar cell module so as to control the selected individual solar cell module 110. (MANUAL), safety mode select key (SNOW) to operate in safe mode in bad weather, operation key (EMERG.) In case of accident, back tracking select key (BACKTR), stop mode key (STOP), etc. To control it.

That is, the present invention comprises a group selection key, a control screen for controlling the selected group, and a control screen for controlling the individual solar cell module in the selected group as a GUI, one sensor and one central control device of the present invention. By using it can achieve the purpose for controlling a plurality of solar cell modules.

These individual control screens and group control screens are exemplified as an example, and various modifications can be made within the technical idea of the present invention, and such modifications are naturally within the scope of the present invention.

In addition, the central control unit 130 is configured to store data capable of optimally driving daily, monthly, seasonal or quarterly control signals in a memory, and to read the data according to the set contents so that the solar power generation can be optimally performed. If necessary, it may be implemented to receive forecast data to enable predictive control.

In addition, referring to FIG. 3, the central control unit 130 is connected to the web monitoring central control unit 170 via a network, and remotely operates the central control unit 130 based on various data measured by the external environmental measurement unit 160. Can be configured to control.

The outdoor environment measuring unit 160 performs a function of collecting weather information and transmitting the collected weather information to the local monitoring unit 150, and also measures the measuring unit 140 measuring the amount of electricity generated by each solar cell module 110. When provided to the local monitoring unit 150, the local monitoring unit 150 analyzes the weather information and the amount of power received from the environmental measurement unit 160 to determine whether there is strong wind or snowfall, a large number during the strong wind or snow For the safety of the solar cell module 110 transmits a corresponding signal to the central control unit to perform a function of forcibly changing the posture of the unit solar cell module (110).

That is, if the central control unit 130 is connected to the network and the remote control web monitoring central control unit 170 is further provided, the web monitoring central control unit 170 is connected to the central control unit 130 to provide a solar cell module At the same time, it is possible to check, control, or set the tracking status by group or individually, as well as enable alarm and remote control in the event of an abnormality, as well as to control and set the operation of the driving unit remotely.

Reference numeral 174 denotes a gateway for interconnecting the web monitoring central control unit 170 and the central control unit 130 with a network.

On the other hand, the central control unit can detect the current angular displacement in real time and store the data, it is possible to calculate the optimal tilt angle that can increase the power generation efficiency at the installation site. This can be calculated in the same manner as the principle of setting the optimum inclination angle in the power generation structure of the fixed or fixed variable type in the system that the tracking method and the fixed method are mixed.

This is because the performance of the solar power system is largely dependent on the installation position and angle depending on the installation position and angle, because the performance improvement can be easily expected without additional cost.

In other words, in order to effectively utilize the solar energy, the azimuth and inclination angle of the solar cell become important. The azimuth angle is generally southward, in which the maximum amount of power generation of the solar cell is maximum, and the inclination angle is the annual power generation amount of the solar cell. It is desirable to set it to an optimal tilt angle (usually 35 degrees). In addition, it is also effective to set the optimum inclination angle for each month when covering the roof or the like and having a different inclination angle for each solar cell array.

The installation angle of the solar cell is about 30 ~ 35 ° because it produces the most power when the solar cell is perpendicular to the solar altitude. However, even if the angle is lower, since the difference in power production is not so large, it is preferable to install at 20 to 40 degrees.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art.

110: solar cell module 112: solar panel
114: driving unit 120: sensor
130: central control unit 140: measuring unit
150: local monitoring unit 160: outdoor environment measurement unit
170: web monitoring central control unit

Claims (8)

delete delete In a solar power generation system having a central control unit for driving a solar cell module having a solar panel for producing power by sunlight, a drive unit for driving the solar panel up, down, left and right and an interface for receiving control signals. In
Divide the solar cell module into one or more groups, each group consisting of two or more solar cell modules, assigning each group identification number and individual solar cell module identification number, and each solar cell module of each group to the group line. Configured to be electrically connected to each other by
The central control unit
Control the driving unit to control the solar cell module of the entire group at the same time by using the identification number or to control by the selected group or to control each solar cell module in the selected group,
Group control to select the selection button for selecting the entire solar cell module or group identification number, the automatic mode for automatically driving the selected solar cell module in the entire or selected group, and the manual mode that can be manually operated Displays the Graphical User Interface,
And a central control unit for displaying an individual control graphical user interface for controlling individual solar cell modules grouped into small groups within the group when the group is selected.
The method of claim 3, wherein
The individual control graphical user interface
Photovoltaic power generation with a central control unit consisting of an automatic mode for automatically driving individual solar cell modules and a graphical user interface that can be selected including a manually operated manual mode or a stop mode system.
The method of claim 3, wherein
The central control unit
A photovoltaic power generation system having one central control unit for tracking and controlling the solar cell modules simultaneously, group by group or individually using one tracking sensor.
6. The method of claim 5,
The central control unit
One central control device configured to select daily, monthly, seasonal or quarterly control signals to enable tracking control and to perform predictive control by receiving safe mode control function and weather data that can be controlled during a typhoon or heavy snowfall. Solar power generation system provided with.
The method according to claim 6,
The tracking control
A photovoltaic power generation system having one central control unit that can be controlled by one-axis tracking to track orientation or two-axis tracking to track altitude and orientation.
The method of claim 3, wherein
And a web monitoring central control unit connected to a network with the central control unit and remotely controllable.
The web monitoring central control unit is remotely connected to the central control unit, and the solar cell module includes a central control unit capable of simultaneously checking, controlling, or setting the tracking status of the solar cell module at the same time, in groups, or individually. Power generation system.

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