KR20140116614A - Ranking calculaion apparatus of photovoltaic power generation system and detection method - Google Patents

Abstract

The present invention relates to a device for calculating the generation ranking of a solar energy generation system and a method thereof capable of improving the efficiency of solar energy generation by analyzing an installation state and an operation state of each solar energy generation unit installed for each field, calculating the generation ranking, and displaying the generation ranking. The device for calculating the generation ranking of the solar energy generation system comprises a plurality of solar energy generation units, a solar energy measurement unit, a solar energy generation ranking calculation unit, and a solar energy generation monitoring unit. The plurality of solar energy generation units comprises a solar battery module which is installed in each field and converts solar energy into electric energy. The solar energy measurement unit is installed in each solar energy generation unit; measures air temperature and the temperature, the amount of solar radiation, the generation time, and the generation amount of the solar battery module; and diagnoses fault, cleaning, and maintenance. The solar energy generation ranking calculation unit calculates reference generation amount with the generation time and the generation ratio of each solar energy generation unit based on a lot of information measured in the solar energy measurement unit and calculates the generation ranking by comparing the reference generation amount with real generation amount and calculating an increase ratio of solar energy generation according to the installed capacity of each solar energy generation unit. The solar energy generation monitoring unit monitors a generation state, monitoring, diagnosis, analysis, and a report with the ranking information of each solar energy generation unit, which is calculated in the solar energy generation ranking calculating unit, in real time.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a power generation ranking calculating apparatus and method for a photovoltaic power generation system,

The present invention relates to an apparatus and a method for calculating power generation ranking of a solar power generation system, and more particularly, it relates to an apparatus and method for calculating a power generation ranking of a solar power generation system, And more particularly, to a power generation ranking calculation apparatus and method for a photovoltaic power generation system.

In order to meet the challenges of depletion of fossil fuels and environmental protection, interest in renewable energy is increasing. In particular, a PV system that converts pollution-free and indefinite solar energy directly into electric energy in renewable energy, Since the control unit is composed of semiconductor devices and electronic components, it is not only mechanical vibration and noise, but also minimizes the cost of operation and maintenance.

The solar photovoltaic power generation system is a grid-connected photovoltaic power generation system in which solar energy is converted into electric energy and supplied to a load to be used, and DC power generated in the solar cell is supplied to a commercial power line through an inverter in real time And a stand-alone photovoltaic power generation system in which the DC power generated in a solar cell is stored in a battery through a charger and supplied to an individual load in the form of a direct current or an alternating current so that it can be used even at night when power is not generated.

However, solar cells are the smallest units that generate electricity using solar light, and solar cells can not obtain adequate voltage and current.

Therefore, in order to obtain appropriate voltage and current and to use the solar cell in a solar power generation system, a plurality of solar cells are connected in series and in parallel, and then a solar cell module is manufactured in a module form by compressing it together with filler and glass A solar cell array in which a plurality of solar cell modules are connected in series or in parallel for high power generation is used.

The solar cell module constituting the solar cell array may be damaged due to contamination, deterioration or wiring failure. However, it is difficult to find a failed solar cell module in a large complex. The operation of the solar cell array composed of a plurality of solar cell modules has to be stopped.

In addition, if one of the solar cell modules constituting the solar cell array fails, it is difficult to find the cause in real time, and the inefficiency of checking the entire solar cell array increases the post-processing cost and the power generation Profitability has deteriorated.

In addition, the PV system is not installed in one area but installed in many areas.

In addition, there is a difference in generation amount due to various environmental factors even among the adjacent photovoltaic power generation parts.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems and it is an object of the present invention to improve the efficiency of photovoltaic power generation by calculating the power generation ranking through the diagnosis analysis, And an apparatus and method for calculating the power generation ranking of a solar power generation system.

According to an aspect of the present invention, there is provided a power generation ranking calculation device for a solar power generation system, comprising: a plurality of photovoltaic power generation units, each including a solar cell module installed on a plurality of sites to convert solar energy into electric energy, A photovoltaic power generation measuring unit installed in each of the photovoltaic power generation units for diagnosing failure diagnosis, cleaning and maintenance in addition to the measurement of the atmospheric temperature and the solar cell module temperature, the solar radiation amount, the generation time and the power generation amount, The power generation time and the power generation rate of each solar power generation unit are calculated based on various information measured by the power generation measurement unit, and the standard power generation amount is calculated and compared with the actual power generation amount to calculate the increase / decrease ratio of the solar power generation according to the facility capacity of each solar power generation unit A solar power generation ranking calculation unit for calculating solar power generation ranking based on the solar power generation ranking calculated by the solar power generation ranking calculation unit, The status of the development, monitoring, diagnostics, analysis, characterized in that comprises a portion for real-time monitoring of PV monitoring report with the ranking information.

In addition, the power generation ranking calculation method of the solar power generation system according to the present invention can measure the atmospheric temperature, the solar cell module temperature, the solar radiation amount, the generation time and the power generation amount from a plurality of solar power generation units installed in each site, Diagnosing maintenance and diagnosing the installation state and the operating state of each of the solar power generation units; Calculating a reference power generation amount of each solar power generation unit based on the diagnosed and analyzed data; Comparing the reference power generation amount with an actual power generation amount of each solar power generation unit installed for each site, and calculating a rate of increase / decrease of solar power generation according to facility capacity of each of the solar power generation units; And accumulating the calculated rate of increase / decrease for a predetermined period of time, and calculating a power generation ranking of each solar power generation section according to the increase / decrease rate of the accumulated solar power generation.

The power generation ranking calculation apparatus and method of the solar power generation system according to the present invention has the following effects.

That is, the efficiency and efficiency of solar power generation can be improved by calculating the power generation ranking through the diagnosis analysis by integrating the installation state and the operation state of each solar power generation unit installed in each site.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a power generation ranking calculation apparatus of a solar power generation system according to the present invention; Fig.
FIG. 2 is a schematic view showing the solar photovoltaic generation unit of FIG. 1
Fig. 3 is a schematic view showing the solar power generation ranking calculating unit of Fig. 1
4 is a graph showing the relationship between the reference power and the generated power through the solar power generation ranking calculation unit of FIG.
FIG. 5 is a schematic view showing the solar power generation monitoring unit of FIG. 1
FIG. 6 is a view showing the development status of the solar power generation system according to the present invention
7A to 7C are diagrams illustrating a monitoring screen in the solar power generation system according to the present invention.
FIGS. 8A and 8B are diagrams for explaining a diagnosis screen
9 is a flowchart showing a power generation ranking calculation method of the solar power generation system according to the present invention

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a power generation ranking calculation apparatus and method of a photovoltaic power generation system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

In addition, the same or corresponding components are denoted by the same reference numerals regardless of the reference numerals, and redundant description thereof will be omitted. For convenience of explanation, the size and shape of each constituent member shown may be exaggerated or reduced have.

FIG. 1 is a schematic view showing a power generation ranking calculation apparatus of the solar power generation system according to the present invention, FIG. 2 is a schematic view of the solar power generation measurement unit of FIG. 1, FIG. 4 is a graph showing the relationship between the reference power and the generated power through the solar power generation ranking calculating unit of FIG. 3; FIG.

As shown in FIG. 1, the power generation ranking calculation apparatus of the solar power generation system according to the present invention includes solar cell modules 111a, 111b, and 111c installed for a plurality of sites to convert solar energy into electrical energy and output 110b, and 110c installed in the respective solar power generating units 110a, 110b, and 110c to measure the atmospheric temperature and the solar cell module temperature, the solar radiation amount, the generation time, and the power generation amount, The photovoltaic generation measuring unit 120a, the photovoltaic power generation unit 120b, and the photovoltaic power generation unit 120c diagnose malfunction diagnosis, cleaning and maintenance, and the photovoltaic power generation unit 120a, 120b, The standard power generation amount is calculated based on the power generation time and the power generation rate of the power generation units 110a, 110b, and 110c, and compared with the actual power generation amount, the rate of increase / decrease of the solar power generation according to the capacity of each of the solar power generation units 110a, 110b, Calculate the power generation ranking Monitoring, diagnosis, analysis, and report together with the ranking information of the solar power generation units 110a, 110b, and 110c calculated by the solar power generation ranking calculation unit 130, And a photovoltaic power generation monitoring unit 140 for monitoring the photovoltaic power generation unit 140 in real time.

Here, the solar power generation units 110a, 110b, and 110c may be installed in the same area, but they may be installed in different areas to generate electric energy.

The photovoltaic power generation units 110a, 110b, and 110c are connected to the solar cell modules 111a, 111b, and 111c, and include an inverter and a grid connection switchboard.

The photovoltaic power generation units 110a, 110b, and 110c may be any one of a fixed type, a tracking type, and a BIPV, or may be combined to produce electrical energy.

The installation capacities of the photovoltaic power generation units 110a, 110b, and 110c installed at the respective sites may be different from each other or may be the same.

The solar radiation amount is an amount of solar radiation incident on the installation place where the solar power generating units 110a, 110b, and 110c are installed. That is, the solar cell modules 111a, 111b, and 111c are inclined at a predetermined angle, Measure the installed solar radiation.

Herein, the horizontal plane irradiation dose refers to a general irradiation dose, and the horizontal irradiation dose can be measured by installing the horizontal radiation dose sensor at the installation position. In this horizontal surface irradiation sensor, the angle of the light incidence surface is always maintained regardless of the position of the sun with respect to time. This horizontal-surface irradiation dose sensor may be positioned between the solar cell modules 111a, 111b, and 111c. At this time, the horizontal radiation irradiation amount sensor may be located at the center of the solar power generation units 110a, 110b, and 110c.

On the other hand, the inclined irradiation amount can be measured by attaching an inclined irradiation amount sensor to the light receiving surfaces of the solar cell modules 111a, 111b and 111c. The inclined irradiation amount sensor may be attached to any one of the solar cell modules 111a, 111b, and 111c or may be attached to all the solar cell modules 111a, 111b, and 111c one by one. At this time, since each of the solar cell modules 111a, 111b, and 111c is automatically adjusted in terms of polar angle and azimuth with time so that their light incident surfaces always follow the direction of the sun, the solar cell modules 111a, 111b, 111c are also always facing the sun.

The connection box, the inverter, and the grid connection switchboard, which constitute each of the solar power generating units 110a, 110b, and 110c, exchange data with each other through wired or wireless communication, and each of the solar light measurement units 120a, 120b, Is communicated with the solar power generation ranking calculation unit 130 via the wireless network. The solar power generation ranking calculation unit 130 and the solar power generation monitoring unit 140 also exchange data through wired or wireless communication.

The solar power generation ranking calculation unit 130 is configured to operate the solar power generation units 110a, 110b, and 110c at the highest efficiency by integrally diagnosing and analyzing the installation state and operation state of the solar power generation units 110a, 110b, and 110c.

The solar power generation ranking calculation unit 130 calculates the solar power generation ranking calculation unit 130 based on the strings of the solar cell modules 111a, 111b and 111c constituting the solar power generation units 110a, 110b and 110c, the connection unit, the inverter, And the power generation ranking is calculated.

The solar power generation monitoring unit 140 displays a list of status, monitoring, diagnosis, analysis, report, and setting, and the administrator can click on each list to display the list of the solar power generation units 110a, 110b, You can check the status of development in real time.

2, the solar power generation measuring units 120a, 120b and 120c include a temperature measuring unit 121 for measuring the atmospheric temperature and the module temperature, A solar radiation amount measuring unit 122 for measuring a horizontal solar radiation amount and an inclined solar radiation amount, a power generation amount measuring unit 123 for measuring power generation time and generation amount of the solar photovoltaic units 110a, 110b and 110c, And a camera unit 124 for monitoring the surroundings together with snow or dead leaves accumulated on the solar cell modules 111a, 111b, and 111c of the solar cells 110a, 110b, and 110c.

The temperature measuring unit 121 is attached to the solar cell modules 111a, 111b and 111c constituting the solar cell units 110a, 110b and 110c to measure the temperature and the temperature of the solar cell modules 111a , 111b and 111c, that is, the atmospheric temperature is measured and transmitted together.

The solar radiation amount measuring unit 122 simultaneously measures the solar radiation amount on the slope and the horizontal irradiation amount on the horizontal plane according to the angle of the solar cell modules 111a, 111b, and 111c.

The power generation amount measuring unit 123 measures and transmits power generation amount and power generation time generated from each of the solar power generation units 110a, 110b, and 110c in real time.

The camera unit 124 is installed above the solar cell modules 111a, 111b, and 111c to monitor the entire area in the area where the solar power generating units 110a, 110b, and 110c are installed, and monitors the current state It is possible to prevent various thefts and accidents in advance.

As shown in FIG. 3, the solar power generation ranking calculation unit 130 acquires various measurement data in real time from solar power generation units 110a, 110b, and 110c installed on a plurality of sites, A model generation unit 131 for generating a standard power generation amount for each of the solar power generation units 110a, 110b, and 110c based on the approximate model, A power generation amount comparison unit 133 for comparing the reference power generation amount calculated by the reference power generation amount calculation unit 132 with an actual power generation amount generated by each of the solar power generation units 110a, 110b, and 110c, A rate of increase / decrease ratio calculation unit 134 for calculating the rate of increase / decrease of the solar power generation according to the capacity of each of the solar power generation units 110a, 110b, and 110c based on the data acquired through the generation amount comparison unit 133, The increase / decrease ratio calculation unit 134 calculates the increase / Of the data on the basis of the development comprises ranking calculating section 135 for calculating a development ranking of each of the photovoltaic power generation unit (110a, 110b, 110c).

Here, the approximate model estimating unit 131 collects data on the temperature, irradiation amount, and power generation amount of each of the solar power generating units 110a, 110b, and 110c installed in each site, and stores abnormal data And estimates an approximate model using a least squares method.

The approximate model estimating unit 131 updates the approximate model for the first year in order to reflect the solar radiation and temperature characteristics for one year for each site where the solar power generating units 110a, 110b, and 110c are installed.

Further, the reference power generation amount calculation unit 132 calculates the reference power based on the approximate model obtained by inputting the solar radiation amount and the temperature measured in real time.

On the other hand, the diagnosis and analysis between the reference power and the actual power generation is described in more detail in the application (Application No. 10-2013-0026001, 10-2013-0026002) filed on March 12, 2013.

As shown in FIG. 4, if the reference power and the generated power are the same, it is determined that the normal operation is performed. (A) If the generated power is lower than the reference power, that is, (C) Accumulating the losses between the reference power and generated power for a predetermined period of time to calculate the ranking of each solar power generation unit.

At this time, as described above, the solar power generation ranking calculating unit 130 selects the reference power in consideration of the operation state of all facilities such as solar radiation amount, temperature, module / connection box / inverter, and grid connection switchboard.

FIG. 5 is a schematic diagram showing the solar power generation monitoring unit of FIG. 1; FIG.

As shown in FIG. 5, the solar power generation monitoring unit 140 includes a power generation status unit 141 for displaying the generation power for the whole day, the current generation power, the horizontal and oblique radiation dose, the standby and module temperature, A power generation efficiency indicator 142 for displaying the power generation efficiency of each of the power generating units 110a, 110b and 110c, the current power generation and the power generation efficiency, A power collecting unit 144 for displaying facility capacity, power generation amount, and power generation amount of each of the photovoltaic power generation units 110a, 110b, and 110c, A ranking display section 145 for displaying ranking based on the power generation amount and maintenance state of each of the solar power generating sections 110a, 110b and 110c; Average power, and power generation time And a transition unit 146.

The power generation status part 141 receives various information measured from the solar power generation measurement part 120 and the solar power generation ranking calculation part 130 through a communication network, . Accordingly, when there is no particular difference in the weather conditions, the manager may include the solar cell modules 111a, 111b, and 111c constituting the solar cell units 110a, 110b, and 110c when a large difference occurs between the all- Therefore, it is recognized that there is an abnormality in the inverter and the inverter, and analysis is performed.

In addition, the power generation efficiency display unit 142 displays the state of the power generation amount in a graph form every hour, and displays the power generation amount with a numerical scale so that the manager can visually recognize the power generation amount.

The site-specific status unit 143 displays the site-specific power generation amounts of the areas where the solar power generation units 110a, 110b, and 110c are installed. The power generation units 110a, 110b, and 110c (%) Along with the generation time (h).

The power collecting unit 144 displays the facility capacity KWh of the solar power generating units 110a, 110b, and 110c installed in each site, and displays the generated amount and the generated amount as days, months, and years, At a glance, it is possible to see today's day and cumulative power generation and generation amount.

That is, the power generation aggregation unit 144 can display the daily generated amount, the monthly generated amount, the current generated amount, the current generated amount, the current generated amount in the current month, and the generated amount this year, respectively, so that the manager can more easily confirm the generated amount together with the total generated amount.

The ranking display unit 145 calculates the power generation time, the number of emergency alarms, and the alarm maintenance time at intervals of one week, and assigns rankings such as gold, silver, and bronze to each site, thereby prompting the field manager to promptly respond. According to the ranking according to the site, the number included in the ranking by quarter or year can be grasped and the excellent award can be performed, thereby enhancing the morale of the field manager.

The power generation time transition unit 146 can check the power generation time of each of the solar power generation units 110a, 110b, and 110c by clicking the data classification part so that the generation time can be identified by day, week, month, and year.

FIG. 6 shows an example of the integrated state of the solar power generation system according to the present invention.

That is, FIG. 6 is a view showing the development status of the solar power generation system according to the present invention.

As shown in FIG. 6, the field manager or the general manager can monitor the electricity generation amount, ranking, and power generation time trend on a real-time basis, including the power generation status by site.

7A to 7C are monitoring screens in the solar power generation system according to the present invention.

As shown in FIG. 7A, when the map portion is clicked on the surveillance screen, the place where the solar power generator 110 is installed can be confirmed from a map or a satellite at a glance, and the field status can be confirmed through the camera portion.

In addition, the solar cell module capacity, inverter capacity, generation time / number of solar power generation units 110a, 110b, and 110c installed in each site can be confirmed by numerical values, and the ranking can be confirmed on the site list for each site.

When the solar power generation units 110a, 110b, and 110c operate normally, green is displayed. When there is a communication network or power generation abnormality, Warning or red warning will blink.

Further, if the green, orange, and red portions are clicked on the map, the current operating state, generated power, oblique irradiation dose, and module temperature can be confirmed.

As shown in FIG. 7B, when the equipment is clicked, it is possible to check whether or not there is an abnormality in all the inverters, the switchgear, the main and the sub-bank in which the solar power generating units 110a, 110b and 110c are installed, The administrator can directly check the number of areas of interest through color.

As shown in FIG. 7C, when the network portion is clicked, the communication state of the current network including the operation status of various sensors of the solar power generation units 110a, 110b, and 110c and the presence or absence of the connection unit can be checked. The administrator can check the color, the number of attention, and the part of interest.

Therefore, in the solar power generation system according to the present invention, the monitoring part can monitor the GIS-based information, the measurement information of each facility, and the network status in real time, so if an abnormality occurs, It can be further improved.

8A and 8B are diagnostic screens in the solar power generation system according to the present invention.

As shown in FIG. 8A, when the diagnosis part is clicked, the site where the solar power generating parts 110a, 110b, and 110c are installed can be checked at a glance from a map or satellite, and the field status can be confirmed through the camera part.

In addition, the solar cell module capacity, inverter capacity, generation time / number of solar power generation units 110a, 110b, and 110c installed in each site can be confirmed by numerical values, and the ranking can be confirmed on the site list for each site.

In addition, it is possible to confirm the daily power generation amount addition, the oblique solar radiation amount, the generated power, the module temperature, the generated power, the conversion efficiency, the daily power generation amount, the daily power generation amount, the one power generation time,

In addition, the status of power generation can be confirmed by each string constituting the solar power generation unit, and the status of each inverter and the status of the connection power generation can be confirmed.

As shown in FIG. 8B, the inverter power generation status can confirm the type of inverter, facility capacity, operation status, AC / DC power, and measurement date and time.

In addition, the connection semi-generation status can check the type of connection panel, the capacity of equipment, current power, load rate, HS temperature, internal temperature, and measurement date and time.

In addition, the current status of each string can be confirmed by the capacity of each string, the current power, the load ratio, and the measurement date and time.

Therefore, in the solar power generation system according to the present invention, the power generation status of each site can be analyzed on the analysis screen, and the status of power generation by the inverter, connection board and string can be confirmed. And the power generation efficiency can be improved through the processing.

9 is a flowchart schematically showing a power generation ranking calculation method of the solar power generation system according to the present invention.

As shown in FIG. 9, the method for calculating the power generation ranking of the solar power generation system according to the present invention includes measuring the atmospheric temperature, the solar cell module temperature, the solar radiation amount, the generation time, Diagnosis, cleaning, and maintenance are diagnosed and the installation state and the operation state of each of the solar power generation units are diagnosed and analyzed (S110).

Here, the photovoltaic power generation units installed on the site are different from each other in installation capacity, and are installed in the same or different areas in the field.

It is possible to accurately diagnose and analyze the current state of each of the solar cell modules constituting the photovoltaic power generation unit, the connection panel, the inverter, and the grid-connected power distribution panel to obtain more accurate data when calculating the reference power amount thereafter.

Subsequently, the reference power generation amount of the installed solar power generation unit is calculated based on the diagnostic analysis data (S120).

Here, the reference power generation amount measures the temperature and the solar radiation amount, and also detects the fault diagnosis state of each solar cell module, the connection panel, and the grid connection switchboard, and sets the reference power generation amount based on the prediction data.

That is, data of temperature, solar radiation, and power generation amount of each solar power generation unit installed on site are collected, and abnormal data generated by initial test run or inspection is filtered, and the reference power generation amount is calculated using the least squares method.

Next, the standard power generation amount is compared with the actual power generation amount of each solar power generation unit installed for each site, and the rate of increase / decrease of the solar power generation according to the facility capacity of each of the solar power generation units is calculated (S130).

Since the installation capacities of the solar power generation units installed for the respective sites are different from each other, the power generation rates are also different. Therefore, the increase / decrease rate is calculated according to the facility capacity of each solar power generation unit.

Then, the calculated rate of increase / decrease is accumulated for a predetermined period of time, and the power generation ranking of each solar power generation unit is calculated according to the increase / decrease rate of the accumulated solar power generation (S140).

Here, the power generation ranking of each of the calculated solar power generation units can be confirmed by the manager through the solar power generation monitoring unit.

Therefore, the power generation ranking calculation apparatus and method of the solar power generation system according to the present invention calculates the rate of change of the solar power generation of the solar power generation unit installed for each site and calculates the ranking of each solar power generation unit, You can check the ranking along with the current status through the displayed screen.

As a result, managers who manage solar power department in each site can be strengthened more management, and by adding award points according to the ranking score, it is possible to induce work concentration by introducing award system.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Will be apparent to those of ordinary skill in the art.

110a to 110b: solar power generation unit 120: solar power generation measurement unit
130: solar power generation ranking calculation unit 140: solar power generation monitoring unit

Claims (8)

A plurality of photovoltaic power generation units including a solar cell module installed on a plurality of sites to convert solar energy into electrical energy for output,
A photovoltaic generation measuring unit installed in each of the solar photovoltaic units for diagnosing failure diagnosis, cleaning, and maintenance in addition to the measurement of the atmospheric temperature, the solar cell module temperature, the solar radiation amount, the generation time,
The reference power generation amount is calculated on the power generation time and power generation rate of each solar power generation unit based on various information measured by the solar power generation measurement unit, and compared with the actual power generation amount, A solar power generation ranking calculation unit for calculating a power generation ranking,
Monitoring, diagnosis, analysis, and report on the basis of the ranking information of each solar power generation unit calculated by the solar power generation ranking calculation unit in real time. System power generation ranking calculation device. The apparatus according to claim 1, wherein the solar power generation measuring unit
A temperature measuring unit for measuring the atmospheric temperature and the module temperature,
A solar radiation amount measuring unit installed in the solar power generating unit for measuring a horizontal solar radiation amount and an oblique solar radiation amount,
A power generation amount measuring unit for measuring a power generation amount of the solar power generation unit;
And a camera unit for monitoring the surroundings together with snow or dead leaves accumulated on the solar cell module of the solar power generation unit. The solar power generation system according to claim 1, wherein the solar power generation ranking calculation unit
An approximate model estimating unit for acquiring various measurement data in real time from the photovoltaic power generation unit installed in each site and following the approximate model,
A reference power generation amount calculation unit for calculating a reference power generation amount of each of the solar power generation units according to the insolation amount, the temperature, the failure diagnosis, the cleaning, and the maintenance diagnosis using the approximate model;
A power generation amount comparison unit for comparing the reference power generation amount calculated by the reference power generation amount calculation unit and the actual power generation amount generated by each of the solar power generation units,
A variation ratio calculation unit for calculating a variation ratio of the photovoltaic power generation according to the facility capacity of each of the photovoltaic power generation units based on the data obtained through the power generation amount comparison unit,
And a power generation ranking calculation unit for calculating a power generation ranking of each of the solar power generation units based on the data of the predetermined period obtained through the increase / decrease ratio calculation unit. The power generation ranking calculation device of the solar power generation system according to claim 1, wherein the solar power generation units have different facility capacities. The system of claim 1, wherein the solar power generation monitoring unit displays a list of power generation status, power generation monitoring, power generation diagnosis, analysis, report, and setting, And displays the power generation ranking of the solar power generation system. The apparatus of claim 1, wherein the solar power generation monitoring unit
A power generation status part for displaying the generation power of the day, the current generation power, the horizontal and oblique solar radiation amount, the atmospheric temperature and the module temperature,
A power generation efficiency display unit for displaying the power generation efficiency of the solar power generation unit, the current generation power, and the power generation efficiency trend,
A site-specific status unit for respectively displaying the power generation efficiencies of the sites provided with the solar power generation units,
A power collecting unit for displaying facility capacity, power generation amount, and power generation amount of each of the solar power generation units,
A ranking display section for displaying ranking based on power generation amount and maintenance state of each solar power generation section;
And a power generation time changing unit for displaying a power generation time, a maximum power generation time, a daily average power, and a total power amount of each of the solar power generation units. Diagnosis, cleaning and maintenance are diagnosed from the plurality of solar power generation units installed in each site in addition to the measurement of the atmospheric temperature, the solar cell module temperature, the solar radiation amount, the generation time and the power generation amount and the installation state and operation state of each solar power generation unit A diagnostic analysis step;
Calculating a reference power generation amount of each solar power generation unit based on the diagnosed and analyzed data;
Comparing the reference power generation amount with an actual power generation amount of each solar power generation unit installed for each site, and calculating a rate of increase / decrease of solar power generation according to facility capacity of each of the solar power generation units;
And accumulating the calculated rate of increase / decrease for a predetermined period of time, and calculating a power generation ranking of each solar power generation section according to the increase / decrease rate of the accumulated solar power generation. Way. The method as claimed in claim 7, wherein the reference power generation amount is calculated by collecting data of the temperature, solar radiation amount, and power generation amount of each solar power generation unit installed for each site, filtering abnormal data generated by initial commissioning or inspection, Wherein the power generation ranking calculating means calculates the power generation ranking of the solar power generation system.

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