JP3472563B2 - Solar power generation facility optimization support equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a computer to determine a layout in layout with respect to a surrounding environment such as an adjacent object around a solar cell array, extraction of maximum output, and a wiring circuit configuration between solar cell modules. The present invention relates to an optimization support device for a photovoltaic power generation facility that can provide information for determining the optimization of installation conditions by an image.

[0002]

2. Description of the Related Art With the spread of solar power generation facilities, solar cell arrays in which a plurality of solar cell modules are connected and arranged in a panel form are installed in various places. Particularly in urban areas, since the buildings are densely packed, the solar cell array is installed on the roof of the building. In this case, due to the influence of the shadow of the building near the installation location, sufficient solar radiation to the solar cell array cannot be obtained, and the generated power will be reduced. In addition, it is difficult to freely select a solar cell array within a limited site, and the installation location within the site due to the size and structural restrictions of the pedestal or foundation structure of the solar cell array. In many cases.

When installing the photovoltaic power generation facility in this way, in order to minimize the reduction of the generated power due to the influence of the shadow of the surrounding structure, the CAD (Computer Aided Design) and other computer-based drawing software programs are used to examine the layout of the solar cell array on drawings such as plan views and cross-sectional views displayed on the screen. From the side view, etc., the surrounding conditions of the solar cell are checked. Regarding the output of the solar cell, the wiring circuit configuration is not considered, but the influence of the shadow is taken into consideration by the designer's empirical judgment. The wiring circuit configuration between the battery modules is examined and decided.

[0004]

In such a conventional technique, when the solar cell array is installed, the installation position of the solar cell array, the wiring circuit configuration, etc. are determined based on the experience of the designer. There is a problem that it is not possible to easily and accurately determine whether the installation position and the wiring circuit configuration are optimal, and the solar cell array is installed in a state where sufficient generated power cannot be obtained.

It is an object of the present invention to provide an optimization support device for a photovoltaic power generation facility, which can easily and accurately determine the installation position of a solar cell array and the optimality of a wiring circuit configuration.

[0006]

The present invention according to claim 1 inputs solar cell data concerning a solar cell array to be installed and installation environment data concerning the surrounding environment including the installation position of this solar cell array. A three-dimensionally modeled solar cell model image and an installation environment model image based on the solar cell data and the installation environment data, and displays the images on the display unit. By inputting a predetermined date and time or a period, the solar cell model image and the installation environment model image displayed on the display unit are superimposed and displayed with a shadow image corresponding to the sun altitude at the predetermined date and time or period. In addition, a graph showing the voltage-current-power relationship of the solar cell array affected by this shading was constructed. It is displayed according to the connection state of the plurality of solar cell modules in the serial direction and the parallel direction, and these shaded images and the graph showing the voltage-current-power relationship are displayed in conjunction with each other. It is an optimization support device for photovoltaic power generation equipment.

According to the present invention, the solar cell model image and the installation environment model image are three-dimensionalized on the display section by inputting the solar cell data regarding the solar cell array and the installation environment data regarding the surrounding environment from the input section. Displayed as a model. Further, by inputting a predetermined date and time or a predetermined period from the input unit, a shadow image corresponding to the sun altitude at the predetermined date and time or a predetermined period is superimposed on the solar cell model image and the installation environment model image. , Is displayed in conjunction with a graph showing a voltage-current-power relationship according to the connection state of each solar cell module in the series direction and the parallel direction. The display of such a display section simulates the influence of shading on the solar cell array under the installation environment, confirms the installation position of the solar cell array, and confirms the wiring circuit configuration of the solar cell module that constitutes the solar cell array. It becomes possible to judge the appropriateness,
This makes it possible to easily and accurately determine the optimality of the installation position of the solar cell array and the wiring circuit configuration.

According to a second aspect of the present invention, the solar cell data includes the type of the solar cell array, the orientation, the number of sheets in the lateral direction,
It is characterized in that a solar cell model image based on the solar cell data, which includes the number of sheets in the vertical direction and the installation position, is superimposed and displayed on the installation environment model image based on the installation environment data on the display unit.

According to the present invention, the type of solar cell array, the orientation, the number in the horizontal direction, the number in the vertical direction, and the installation position are input as the solar cell data input from the input unit. On the basis of the data, the solar cell model image is displayed on the display unit, and this display is superimposed on the installation environment model image. Therefore, the solar cell model image superimposed and displayed on the installation environment model image accurately simulates the actually installed solar cell array, and displays the installation position of the solar cell array and the optimality of the wiring circuit configuration on the display unit. In judging on the image, more accurately criticize and display the overlapping state of the shadow image,
It is possible to judge the optimality with high accuracy.

According to a third aspect of the present invention, the solar cell model image and the installation environment model image are displayed as viewed from a direction on a virtual three-dimensional space corresponding to a movement command input from an input unit. It is characterized in that a shadow image corresponding to the position of the sun in the virtual three-dimensional space moved in response to this movement command is superimposed and displayed on the solar cell model image and the installation environment model image.

According to the present invention, the solar cell model image and the installation environment model image displayed on the display unit are three-dimensionally displayed in the virtual three-dimensional space by the movement command input from the input unit, and this three-dimensional image is displayed. Since the shadow images are three-dimensionally superimposed and displayed, the influence of the shadow on the solar cell array can be recognized more accurately and easily, and the installation position of the solar cell array and the optimality of the wiring circuit configuration can be determined. In doing so, it is possible to obtain a three-dimensional image with improved accuracy and improved reliability.

[0012]

[0013]

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a block diagram of an optimization support device 1 for photovoltaic power generation equipment showing an embodiment of the present invention. In the present embodiment, the "solar cell" means
A minimum unit in which a PN junction is formed on a semiconductor substrate such as silicon and electrodes are provided. A "solar cell module" is a series of solar cells connected in series or in parallel and sealed in a package. , Refers to the smallest unit of power generation unit having a predetermined voltage-current characteristic, "solar cell panel" refers to an assembly in which a plurality of solar cell modules are connected mechanically, and is referred to as a "solar cell array". Is
It refers to an assembly in which a plurality of solar cell panels are connected and mechanically connected. Further, the “photovoltaic power generation equipment” is synonymous with a photovoltaic power generation system, includes the solar cell panel or a solar cell array, converts solar energy into electric energy by a photoelectric effect, and supplies electric power suitable for a load. A device that is configured for this purpose and the devices that are attached to it.

[0015] The optimization support device (hereinafter sometimes abbreviated as support device) 1 for the photovoltaic power generation facility is basically
The input unit 2, the arithmetic processing unit 3, and the display unit 4 are included and implemented by, for example, a personal computer. The input unit 2 includes an input device such as a keyboard and a mouse, and can input data and commands to the arithmetic processing unit 3.

The arithmetic processing unit 3 includes an arithmetic processing unit (Central Processing Unit).
Processing Unit: CPU (abbreviation) 3a and RAM (Random)
m Access Memory) and ROM (Read Only Memory)
And a storage device 3b realized by the above, and performs a calculation process in response to data and a command input from the input unit 2, and displays the calculation result on the display unit 4. The storage device 3a of the arithmetic processing unit 3 stores a software program for providing optimization support information of a photovoltaic power generation facility described later. In another embodiment of the present invention, this software program may be stored in an external storage device connected to the arithmetic processing unit 3. The display unit 4 is composed of a liquid crystal display device (abbreviated as LCD) or a cathode ray tube display device (abbreviated as CRT), and is configured to display the image information from the arithmetic processing unit 3 as a color image.

The support device 1 as described above calculates by inputting from the input unit 2 the solar cell data regarding the solar cell to be installed and the installation environment data regarding the surrounding environment including the installation position of this solar cell. Processing unit 3
Is based on solar cell data and installation environment data,
The solar cell and the installation environment are three-dimensionally modeled, model image information of the solar cell and the installation environment that is three-dimensionally modeled, and shadow image information corresponding to the sun altitude at a designated date and time are created, and the display unit 4 The shadow images 8a to 8f can be superimposed on the solar cell model image 6 and the installation environment model images 7a to 7g based on the three-dimensional modeled model image information and displayed on the display screen 5.

In the solar cell model image 6, the installation environment model images 7a to 7g and the shaded images 8a to 8f, the rotation command buttons 9a and 9b displayed on the display screen 5 are moved by the cursor 10 which is interlocked with the operation of the mouse. When the button is pressed, the object can be rotated three-dimensionally around the vertical axis on the image at an angle as if the object was viewed obliquely from above, and the image can be displayed at the rotational position viewed from the desired direction.

FIG. 2 is a flow chart for explaining the procedure for setting the model image information of the solar cell model image 6 and the installation environment model images 7a to 7g, and FIG. 3 is displayed on the display screen 5 of the display unit 4. Basic condition setting image 12
FIG. When generating, ie, modeling, the solar cell model image 6 and the installation environment model images 7a to 7g, basic conditions regarding the installation location of the solar cell array to be actually installed are set. First, in step a1, the setting work related to modeling is started,
In step a2, the operator determines whether or not there is site data relating to the installation location based on the display content of the basic condition setting image 12 displayed on the display screen 5.

This basic condition setting image 12 has, as setting items, a title 13a, an installation spot name 13b, and an area 13.
c, point 13d, site width 13e, site depth 13f, site azimuth angle 13g, latitude 13h, and longitude 13i are displayed. In the title 13a, the name of the owner or the construction client is input, and in the next installation point name 13b,
The address or address of the name entered in the title 13a is entered.

In the area 13c, the areas to which the name entered in the title 13a and the residence or address entered in the installation point name 13b belong are displayed by pressing the menu button 13j.
The prefecture name corresponding to the place of residence or the address entered in the installation point name 13b is displayed at the point 13d by selecting it from a menu such as the Kanto region, ... Hokkaido where the menu button 13k is pressed. It is selected and input from a menu such as Aomori prefecture, Akita prefecture, and so on.

The respective menu buttons 13j and 13k are
By moving the cursor display 10 displayed on the display screen 5 onto one of the menu buttons 13j and 13k and clicking the click button of the mouse, the cursor can be pressed on the screen. When the prefecture name is input to the point 13d as described above, the latitude and longitude of the input point name are displayed in the latitude display column 13m and the longitude display column 13n.

On the right side of the latitude display column 13m and the longitude display column 13n, there are provided a latitude setting column 13h and a longitude setting column 13i for inputting, confirming or correcting the latitude and longitude used in the calculation. A check box 13r for selecting whether or not to use the values input in the latitude and longitude setting fields 13h and 13i for calculation is provided. By placing the cursor display 10 on the check box 13r and clicking the mouse click button, it is possible to select whether or not to use for the calculation. Check box 13
In the state where the check symbol is displayed in r as shown in FIG. 3, it is used for the calculation for generating the above-mentioned shadows 8a to 8f by using the input values of the setting fields 13h and 13i.
Further, when the check mark is not displayed in the check box 13r, the values displayed in the setting fields 13h and 13i are ignored.

Further, the site width 13e is entered with the width of the site of the residence or address entered with the installation point name 13d, the site depth 13f is entered with the site depth length, and the site azimuth angle 13g is entered. Is entered as the azimuth angle of the site, that is, the angle formed by the direction line corresponding to the depth of the site from the true north direction. A site color setting button 13s is provided below the site azimuth angle 13g on the display screen 5 for designating a color for displaying the site.
Cursor display 10 on this site color setting button 13s
In the state where is placed, by clicking the mouse button of the mouse, the color palette is displayed,
By selecting a desired color from a plurality of color displays in this color palette, the selected color is set as the site color.

Furthermore, on the display screen 5, an enter button 13t for determining the above-mentioned setting items 13a to 13i, 13m, 13n and 13s, and setting items 13a to 13a.
An invalid button 13u for disabling i, 13m, 13n, 13s is provided.

The presence / absence of the site data in step a2 is determined by the operator by looking at the display screen 5 of the display unit 4. If the site data is not input, the process proceeds to step a3, and Setting items 13a to 13i, 13
m, 13n, 13s are input and set, and in step a4, the setting state regarding the basic condition is displayed as shown in FIG. If there is site data in step a2,
By moving to step a5 and pressing the decision button 13t of the basic condition setting image 12, the setting contents relating to the basic condition are read, and the basic condition setting work is completed.

FIG. 4 is a view showing the building condition setting image 14 displayed on the display screen 5 of the display unit 4. The display unit 4
On the display screen 5 of, the building condition setting image 14 is displayed in order to set the data on the building where the solar cell is to be installed.
Is displayed. This building condition setting image 14 has a name 15
a, building color setting button 15b for setting the display color of the building, width 15c, depth 15d, height 15e,
X-direction coordinate 15 for setting the reference position of the left end of the building
f, Y direction coordinate 15g for setting the height of the building from the ground, Z direction coordinate 15h for setting the reference position of the left end of the building, plane display area 15i, front display area 15
j, X-axis center rotation angle 15k, Y-axis center rotation angle 15
m, a Z-axis center rotation angle 15n, an enter button 15p, and a cancel button 15q.

In the plane display area 15i, the size of the building,
That is, the width 15c, the depth 15d, and the height 15 described above.
The plane shape based on the input of e is displayed as the input information regarding the position, that is, the X-direction coordinate 15f, the Y-direction coordinate 15g, and the Z-direction coordinate 15h as the designated values of the coordinates of the left edge of the building.

Further, in the front display area 15j, XY
The coordinates are set, and the front shape of the building is displayed on the XY coordinates in correspondence with the values input with the depth 15d and the height 15e. At this time, the lower left edge of the building is the X-direction coordinate 1
It is displayed as the value input at 5f and the coordinate in the Y direction of 15g.

Each of the above setting items 15a to 15h, 1
The selected input value is erased by pressing the enter button 15p to register 5k to 15n, or pressing the cancel button 15q to delete all or individually.

Next, in step a6, if the data regarding the solar cell array to be used is not set, the process proceeds to step a7, and the work of creating the model of the solar cell array is started.

FIG. 5 is a diagram showing a solar cell data setting image 16 for inputting setting conditions regarding the solar cell. This solar cell data setting image 16 has a name 17a,
Solar cell color setting button 17b for setting the color of the solar cell image, manufacturer name input section 17c for inputting the manufacturer name of the solar cell module, module type input section 17d for inputting the type of solar cell module Has a manufacturer name 17e of an inverter used for a solar cell module and an inverter model 17f. In addition, in this solar cell data setting image 16, the number of horizontally set sheets for setting the number of horizontally connected cells for the solar cell module is set to 1
7g, number of vertical setting 17 to set the number of vertical connection
h, a horizontal placement setting unit 17i for setting the installation direction of the solar cell module, and a vertical placement setting unit 17j for selecting the vertical placement, and by inputting these, the horizontal placement setting unit 17i and the vertical placement In the area below the setting unit 17j, the maximum number, the power, the array size, the selected number,
And the power is displayed.

Below the setting area of the module, there is provided an area for inputting data relating to the position where the solar cell is installed. In this area, the X coordinate 17k,
It is composed of Y-direction coordinates 17m and Z-direction coordinates 17n.

In the module setting area, a selection button 17w for selecting a solar cell that constitutes the solar cell array is also provided, and a preview button 17x is provided below the selection button 17w. This selection button 17w
As the layout of the solar cell array selected by, for example, it is desired to use the solar cells indicated by diagonal lines in the display area 17s of FIG. 5, but the layout becomes very complicated, and therefore all the solar cells are included. The solar cell array is constructed as a rectangular shape, and the selection button 17w
Select all of the solar cells according to and set the layout of the solar cell array as originally required. Selection button 17
The state before selection by w is 8 horizontal sheets and 5 vertical sheets. After being selected by the selection button 17w,
The horizontal number of solar cells is 6, and the vertical number is 5.

Further, by pressing the preview button 17x, the solar cell array is displayed in the installation direction with the previously input set number. Below the display area 17s, a tilt angle input unit 17p, an azimuth angle input unit 17q, and a Z-axis center input unit 17r of the solar cell array are provided.

Furthermore, the solar cell data setting image 16
In the upper right corner of the, a setting button 17t for setting each of the above input values and an invalid button 17 for invalidating the input value.
A characteristic display button 17v for selecting or displaying the characteristics of the solar cell module of the type set in the module type input unit 17d is provided.

At step a8, first, the setting items 17a to 17j, 17 displayed on the solar cell data setting image 16 are displayed.
For k, 17m, 17n, and 17p to 17r, the corresponding setting contents are input. In step a6, the setting items 17a to 17j, 17k, 17m, 1 of the building condition setting image 14 and the solar cell data setting image 16 have already been set.
When the set values are input to 7n and 17p to 17r, the decision button 17e is pressed in step a12 to read the data. When the setting of the basic condition, the building condition and the solar cell data is completed as described above, the layout image 18 is displayed on the display screen 5 of the display unit 4 as shown in FIG.

FIG. 6 is a diagram showing a layout image 18 displayed on the display screen 5 of the display unit 4. The layout image 18 has four parts, which are obtained by dividing the display area into four, that is, a flat display area 19 a and a front display area 19.
b, a three-dimensional display area 19c and a side display area 19d. In each of these display areas 19a to 19d, the building and the solar cell array are modeled and displayed based on the above-mentioned setting conditions. With such an image, the operator can easily and accurately recognize the installation state of the solar cell array on the building in three dimensions.

At step a9, the layout image 18 is displayed.
The placement of the model is confirmed by each of the areas 19a to 19d, and if the model data is added in step a10, the process returns to step a7 to create the model, and if there is no addition, the model creation work ends in step a11. .

FIG. 7 is a flow chart for explaining the procedure of the setting work relating to the shadow, and FIG.
It is a figure which shows the shadow display condition setting image 20 displayed on the display screen 5 of FIG. The shadow display condition setting image 20 has a date display field 22a, a condition display field 22b, and a display model selection field 22c. The date display column 22a has numeral units 23a to 23c corresponding to the dates. The condition display column 22b includes a time designation column 24a and a range designation column 24.
b, and any one of these can be selected. The time designation field 24a is for inputting each time
It is possible to specify by inputting the hour and minute with the numeric key of. In addition, in the range designation field 24b, an interval setting unit 25a for setting a time interval for displaying a shadow, a display range setting unit 25b for setting a time range in which a shadow is displayed, and a display method are set. And a display method setting unit 25c. The interval setting unit 25a includes the input unit 2
You can set the interval at which the shadow changes in minutes by using the numeric keys of. Further, the display range setting unit 25b
First selection unit 26 for selecting from sunrise to sunset
It has a and a second selection unit 26b for inputting two times from the start to the end of the display range with the numeric keypad or the like. The display method setting unit 25c has a sequential selection unit 27a, a continuous selection unit 27b, and a trajectory selection unit 27c as its display method, and one of these can be selected. The continuous selection unit 27b is provided with a time interval setting unit 27d for selecting a time interval with respect to a temporal change in the shadows when continuously displaying the shadows.

The shadow display model selection field 22c is provided with a plurality of selection buttons 28 for selecting a display model in which a shadow is displayed. When it is not selected whether or not to display a shadow on the display model by the plurality of selection buttons 28, the influence of the shadow on the solar cell is ignored, and only the shadow on the surrounding structures is confirmed. It can be used to do so.

In order to execute the contents set in the shadow display condition setting image 20 as described above, this image 20 is provided with a decision button 29 and a cancel button 30 for canceling the set contents. . First, in step b1, the setting work of the condition relating to the shadow is started, in step b2 the setting work of the individual condition for displaying the shadow is started, and in step b3 it is judged whether or not the shadow is displayed by the time designation. . If the time is not specified, the process moves to step b4, and it is confirmed from the display range 25b of the shaded display condition setting image 20 whether the time range (that is, the period) has already been set, and the time range is set. If not, the display interval and range are input in step b5. If the time range is specified, the display method is set in the display method setting field 25c in step b6.
When the display method is specified, the process moves to the next step b8. When the display method is not specified, the display method is selected and specified by the display method setting field 25c in step b7.

In step b3, when the time is designated and the shade is displayed, it is confirmed in step b9 whether the time is designated, and if the time is designated, the step b8 is performed.
If the time is not specified, step b10
The time is entered in the time designation field 24a to set the time at which the shadow should be displayed. In step b8, a shaded display model is selected by a plurality of display model selection buttons 21, and in step b11 the shaded display state is displayed on the display screen 5 for confirmation.

In step b12, it is judged whether or not the layout of the display model is changed. If the layout of the model is to be changed, the process returns to step b3. If the layout of the model is not changed, the shading is displayed in step b3. The setting work is completed.

FIG. 9 is a flow chart for explaining the procedure for setting the optimum connection state of the solar cell module, and FIG. 10 shows the current-voltage characteristic setting image 31 displayed on the display screen 5 of the display unit 4. It is a figure. When connecting a plurality of solar cell modules and determining the configuration of the solar cell array, in order to determine the optimum connection state between the solar cell modules, the setting work for the optimum connection construction is started in step c1, In step c2, the calculation condition for determining the current-voltage characteristic is set. This calculation condition is
Module configuration column 3 in the current-voltage characteristic setting image 31
It is set by inputting the number of solar cell modules connected in series and the number of solar cell modules connected in parallel to the serial number setting unit 32b and the parallel number setting unit 32c of the solar cell array 2a. By inputting the number of connected solar cell modules to each of the series number setting unit 32b and the parallel number setting unit 32c, the module number display unit 32d
Displays the total number of solar cell modules. In addition, in the current-voltage characteristic setting image 31, the solar radiation intensity setting field 3
3a is provided. The solar radiation intensity setting field 33a includes a variation selection unit 33b that changes the solar radiation intensity according to the date and time, and a fixed selection unit 33c that fixes the solar radiation intensity to a predetermined intensity. When the variation selection unit 33b is selected in step c2, step c
Use 4 to set the date and time. Therefore, the variation selecting unit 33b is provided with a year setting unit 33d, a month setting unit 33e, a day setting unit 33f, a time setting unit 33g, and a minute setting unit 33h, and whether or not the shadow is displayed on the display screen 5 at the same time. A simultaneous display selection unit 33i for selecting is provided.

Further, the operating temperature and the solar radiation intensity are displayed on the fixed selection section 33c, and 1 kW / m ² is displayed as the solar radiation intensity when the operating temperature is 25 ° C. in FIG.

Next, in step c5, the connection method of each solar cell module is set. Therefore, the solar cell setting field 34a is provided in the current-voltage characteristic setting image 31. The solar cell setting field 34a has a battery selection section 34b, a layout changing section 34c, and a connection selection section field 34d for selecting a connection state.

The current-voltage characteristic setting image 31 also has a graph attribute selection button 35a, a calculation execution button 35b, a decision button 35c and a cancel button 35d.
When the connection button 34d is pressed, the module connection image 41 for setting the connection of the solar cell module is displayed on the display screen 5 of the display unit 4 as shown in FIG.

FIG. 11 is a diagram showing a module connection image 41 displayed on the display screen 5 of the display unit 4. The module connection image 41 includes a first frame 42a indicating module combination, a second frame 42b indicating specifications regarding the solar cell, and a third frame 42c for setting a connection state of the solar cell connection module. The first frame 42a displays the number of series and the number of parallel solar cell modules set in the module configuration setting field 32a of the current-voltage characteristic setting image 31. In the second frame 42b, the name, maker name, and model of the solar cell are displayed, and a selection box 43 for setting the temperature characteristics of the solar cell is provided. This temperature characteristic selection box 4
3 is configured so that one of the types of solar cells used, that is, one of a plurality of types of solar cells such as single crystal, polycrystal, and amorphous can be selected.

A characteristic display button 44 is provided on the second frame 42b. This characteristic display button 44
Can select or display the characteristics of the solar cell module in the same manner as the characteristics display button 17v described above.

The third frame 42c includes the first frame 4
The module configuration displayed in 2a, that is, the number of series and parallel number of solar cell array models 45 is displayed, and a plurality of connection state selection buttons 46 are provided. The solar cell array model 45 has a current-voltage characteristic setting image 31.
By pressing the calculation execution button 35b, the shadows based on the calculation result are superimposed and displayed.

The connection state selection button 46 includes addition of connection, deletion of connection, automatic acquisition of shadow, manual setting of shadow,
The function of manually canceling the setting of shading is embedded in each button.

In step c6, the connection state selection button 4
It is confirmed whether the wiring pattern set by 6 is configured in the serial / parallel number set in the module configuration setting fields 32b and 32c of the current-voltage characteristic setting screen 31. In step c7, the year / month set in step c2 is set. In the case of automatically acquiring the shadow on the solar cell array at the time of day and time, the automatic shadow acquisition button is pressed from the connection state selection button 46, and the automatic input setting of step c8 is performed. Further, the shadow setting manual button is pressed from the connection state selection button 46, and an arbitrary shadow is set on the solar cell array by the manual input setting in step c9.

At step c10, steps c7 to c9 are performed.
For each module of the solar cell array in the shaded state set on the solar cell array by, the current flowing in and out via the diode in the solar cell equivalent circuit is obtained from a general diode voltage-current characteristic formula.
Repeatedly calculate the voltage-current characteristic value of the solar cell module affected by the shadow obtained by using the general formula, the number of times corresponding to the number of series in the module configuration setting column 32b and the number of parallel modules in the module configuration setting column 32c. Then, the current-voltage-power characteristic value of the solar cell array affected by the shadow is obtained by a general n-dimensional non-linear simultaneous equation.

In step c11, the maximum instantaneous power value of the solar cell array, which was previously scheduled, is compared with the maximum power value obtained from the product of the current-voltage of the solar cell array, which is obtained in step c10. If it can be determined that the calculation result of c10 is appropriate, the optimal connection construction of step c13 ends. If the calculation result in step c10 cannot be judged to be appropriate, the process returns to the setting of the wiring method in step c5, and the wiring of the solar cell array is set again.

FIG. 12 is a diagram showing a current-voltage characteristic image 51 displayed on the display screen 5 of the display unit 4. When the characteristic button 44 of the module connection image 41 described above is pressed, the current-voltage characteristic image 51 is displayed in place of the module connection image 41. In the current-voltage characteristic image 51, the horizontal axis represents the voltage value, the left vertical axis represents the current value, the right vertical axis represents the power value, the curve 52 represents the relationship between the current and the voltage, and the curve 53. Indicates a power value obtained by the product of the voltage and the current indicated by the curve 52. This voltage −
Above the graph showing the current-power relationship, the graph type, title, installation site name, number of solar cell modules, solar radiation intensity conditions, etc. are displayed.

FIG. 13 is a flowchart showing the procedure for setting the power generation characteristics, FIG. 14 is a view showing a power generation curve condition setting image 61, and FIG. 15 is a view showing a power generation curve graph attribute setting image 71. . The power generation characteristic setting work is started in step d1, and the calculation condition setting work is started in step d2.
In step d2, enter the year / month / day for which calculation is to be performed in the calculation month / day setting field 62a, set the time interval for calculation in the interval setting field 62b, and set the date calculation, month calculation, year calculation in the range setting field 62c. The calculation periods are divided and displayed in three types, and check boxes 62e and 62f for selecting either one of the time transition and the time integration are provided in the day calculation. In addition, in the monthly calculation, check boxes 62g, 62h, and 62i for selecting one of the daily transition, the monthly integration, and the average of the time transition are provided. Further, in the yearly calculation, check boxes 62j, 62k, and 62m are provided for selecting any one of the monthly transition, the annual integration, and the average of the time transition.

Further, in the condition setting field 62d, there are a check box 62n for selecting to display a shadow in conjunction with the above calculated value and a check 62p for selecting not to link a shadow in the above calculation. Have. In step d5, if the linkage with the shadow is not selected, step d
In step 6, the setting operation using the graph attribute setting image 71 shown in FIG. 15 is performed, and when the check box 62n is selected to link with the shadow, the calculation displayed by selecting the check box 62n is performed. There is provided a selection box 62q for displaying all the graphs and a selection box 62r for selecting to display shadows at the same time. When the check box 62n is selected and the simultaneous display of shadows is selected, either one of the check box 62q for displaying all graphs being calculated or the check box 62r for simultaneously displaying shadows is selected in step d13.

The power generation curve condition setting image 61 also includes a graph attribute selection button 63a for selecting a graph attribute setting, a decision button 63b for determining each of the above setting contents, and a deletion of the above setting contents. The delete button 63c is provided.

The graph attribute setting image 71 is provided with a display range instruction field 72a, a display graph selection field 72b, a display state setting field 72c, an enter button 72d, and a delete button 72e. The display range designation field 72d has a first check box 72f for automatically setting the display range by a calculation preset in the program, and a second check box 72g for manually setting the display range.

The display graph selection field 72b has an inclined surface solar radiation selection unit 72h, a reference temperature output selection unit 72i, and an operating temperature output selection unit 72j. These selection units 72h
To 72j are displayed in color, the colored display selection sections 72k, 72m, 72n and the color selection sections 72p to 7 are selected.
2r is provided. When the inclined surface solar radiation selection unit 72h is selected, the inclined surface solar radiation in consideration of the shadow is displayed in the power generation curve calculation image 81 as indicated by reference numeral 81a in FIG. When the reference temperature output selection section 72i is selected, the reference temperature output is displayed as 81b. When the operating temperature output selection section 72j is further selected, the AC power generation amount is displayed as 81c.

The display state setting section 72c has a selection section 72s for switching between three-dimensional display and two-dimensional display, and a background deletion selection section 72t for selecting display / non-display of the background behind the site.

As described above, according to the present embodiment, the solar cell model image and the installation environment are displayed on the display section by inputting the solar cell data regarding the solar cell array and the installation environment data regarding the surrounding environment. The model image is displayed as a three-dimensional model. Further, by inputting a predetermined date and time or a predetermined period from the input unit, a shadow image corresponding to the sun altitude at the predetermined date and time or a predetermined period is superimposed on the solar cell model image and the installation environment model image. Is displayed. The display of such a display means simulates the influence of shading on the solar cell array under the installation environment, confirms the installation position of the solar cell array, and confirms the wiring circuit configuration of the solar cell module that constitutes the solar cell array. It is possible to determine the appropriateness, and thereby it is possible to easily and accurately determine the optimality of the installation position of the solar cell array and the wiring circuit configuration.

Further, according to the present embodiment, the type of solar cell array, the orientation, the number in the horizontal direction, the number in the vertical direction and the installation position are input as the solar cell data input from the input unit. Based on accurate solar cell data,
A solar cell model image is displayed on the display unit, and this display is displayed so as to be superimposed on the installation environment model image. Therefore, the solar cell model image superimposed and displayed on the installation environment model image accurately simulates the actually installed solar cell array, and displays the installation position of the solar cell array and the optimality of the wiring circuit configuration on the display unit. When making a judgment on an image, it is possible to more accurately reflect and display the superimposition state of the shadow image, etc., and judge the optimality with high accuracy.

Further, according to the present embodiment, the solar cell model image and the installation environment model image displayed on the display unit are three-dimensionally displayed on the virtual three-dimensional space according to the movement command input from the input unit. Since the shadow image is three-dimensionally superimposed and displayed on the stereoscopic image, the influence of the shadow on the solar cell array can be recognized more accurately and easily, and the installation position of the solar cell array and the wiring circuit configuration can be optimized. In determining the sex, a three-dimensional image with improved accuracy and improved reliability can be obtained.

Further, according to the present embodiment, since the output characteristic is displayed on the display unit according to the connection state of the solar cell modules in the series direction and the parallel direction, the shadow characteristic is displayed from such output characteristic. Easily determine the influence and the quality of the connection state between each module, more accurately determine the installation position of the solar cell array and the optimality of the connection circuit configuration,
The solar cell array can be laid out so as to obtain a higher output characteristic or a desired output characteristic, and it is possible to assist the selection of each more optimal wiring circuit configuration.

[0067]

According to the present invention as set forth in claim 1, the display of the display means simulates the influence of the shadow on the solar cell under the installation environment to confirm the installation position of the solar cell and to confirm the solar cell. It is possible to determine the appropriateness of the wiring circuit configuration of the solar cell module to be configured, and thus it is possible to easily and accurately determine the installation position of the solar cell and the optimality of the wiring circuit configuration.

According to the second aspect of the present invention, the type of solar cell, the orientation, the number in the horizontal direction, the number in the vertical direction, and the installation position are input as the solar cell data input from the input unit. The solar cell model image is displayed on the display unit so as to be superimposed on the installation environment model image. Therefore, the solar cell model image superimposed and displayed on the installation environment model image accurately simulates the actually installed solar cell, and displays the installation position of the solar cell and the optimality of the wiring circuit configuration on the display image of the display unit. Criticize and display more accurately above,
It is possible to judge the optimality with high accuracy.

According to the third aspect of the present invention, since the shaded image is three-dimensionally superimposed and displayed on the three-dimensional image of the solar cell model image and the installation environment model displayed on the display unit, the solar cell is displayed. The influence of the shadow can be recognized more accurately and easily, and the accuracy and the reliability can be improved in determining the installation position of the solar cell and the optimality of the wiring circuit configuration.

[0070]

[Brief description of drawings]

FIG. 1 is a block diagram of an optimization support device 1 for photovoltaic power generation equipment showing an embodiment of the present invention.

FIG. 2 is a flowchart for explaining a procedure for setting model image information of a solar cell model image 6 and installation environment model images 7a to 7g.

FIG. 3 is a diagram showing a basic condition setting image 12 displayed on a display screen 5 of a display unit 4.

FIG. 4 is a diagram showing a building condition setting image 14 displayed on a display screen 5 of a display unit 4.

FIG. 5 is a diagram showing a solar cell data setting image 16 for inputting setting conditions regarding a solar cell.

6 is a diagram showing a layout image 18 displayed on the display screen 5 of the display unit 4. FIG.

FIG. 7 is a flowchart for explaining a procedure of installation work related to shadows.

8 is a diagram showing a shadow display condition setting image 20 displayed on the display screen 5 of the display unit 4. FIG.

FIG. 9 is a flow chart for explaining a procedure for detailing an optimal connection state of the solar cell module.

10 is a diagram showing a current-voltage characteristic setting image 31 displayed on the display screen 5 of the display unit 4. FIG.

11 is a diagram showing a connection setting image 41 of the solar cell module displayed on the display screen 5 of the display unit 4. FIG.

12 is a diagram showing a current-voltage characteristic image 51 displayed on the display screen 5 of the display unit 4. FIG.

FIG. 13 is a flowchart showing a procedure for setting power generation characteristics.

FIG. 14 is a diagram showing a power generation curve condition setting image 61.

FIG. 15 is a diagram showing a power generation curve graph attribute setting image 71.

16 is a diagram showing a power generation curve calculation image 81. FIG.

[Explanation of symbols] 1 Optimization support device 1 2 Input section 3 arithmetic processing unit 4 Display 5 Display screen 6 solar cell model image 7a-7g Installation environment model image 8a-8f shadow image 9a, 9b Rotation command button 10 cursor 12 Basic condition setting image 14 Building condition setting image 16 Solar cell data setting image 18 layout images 19a Flat display area 19b Front display area 19c 3D display area 19d Side display area 20 Shading display condition setting image 21 Display model selection button 31 Current-voltage characteristic setting image 41 module connection image 43 Temperature characteristic selection box 44 Characteristic setting button 45 Solar array model 46 Connection status selection button 51 Current-voltage characteristic image 61 Power generation curve condition setting image 71 Power generation curve graph attribute setting image

Front Page Continuation (56) References JP 2001-265833 (JP, A) Y. Nogawa et al., Photovoltaic Power Generation Optimization System, Proc. Of the 9th Lecture Meeting on Design Engineering and Systems, Japan, Japan Japan Society of Mechanical Engineers, November 19, 1999, p591-592, Total number: No. 99-27 G. Hoffmann, Opti mierung von Photov oltaik-Anlagen in Fassaden un ter Ber uecksichtigung von Eigen- und Fremd-Ver, Schott, Fortschricht-Berch. 139, p121-126 (58) Fields surveyed (Int.Cl. ⁷ , DB name) G06F 17/50 JSTPLUS file (JOIS)

Claims (3)

(57) [Claims] 1. The solar cell data and the installation by inputting solar cell data regarding a solar cell array to be installed and installation environment data regarding a surrounding environment including an installation position of the solar cell array from the input unit. Based on the environmental data, a three-dimensional modeled solar cell model image and installation environment model image are generated, displayed on the display unit, and a predetermined date or time is input from the input unit to display the display. On the solar cell model image and the installation environment model image displayed in the section, a shadow image corresponding to the sun altitude of the predetermined date and time or period is superimposed and displayed, and the solar cell array affected by the shadow is displayed. Is a graph showing the relationship between voltage, current, and power of the solar cell array in the series direction. And a graph showing the relationship between the shadow image and the voltage-current-power, which are displayed according to the connection state in the parallel direction, and are displayed in conjunction with each other. . 2. The solar cell data includes a type of solar cell array, orientation, number in horizontal direction, number in vertical direction, and installation position, and a solar cell model image based on the solar cell data is displayed on a display unit. The optimization support apparatus for a photovoltaic power generation facility according to claim 1, wherein the optimization support device is superimposed and displayed on an installation environment model image based on the installation environment data. 3. The solar cell model image and the installation environment model image are images viewed from a direction in a virtual three-dimensional space corresponding to a movement command input from an input unit, and corresponding to the movement command. The solar power generation facility according to claim 1 or 2, wherein a shaded image corresponding to the position of the sun in the moved virtual three-dimensional space is superimposed and displayed on the solar cell model image and the installation environment model image. Optimization support device.