WO2014119822A1

WO2014119822A1 - Apparatus and method for power generation diagnosis of solar photovoltaic generation monitoring system

Info

Publication number: WO2014119822A1
Application number: PCT/KR2013/004485
Authority: WO
Inventors: 박기주; 권영복; 최정내
Original assignee: (주)케이디파워; (주)케이디티
Priority date: 2013-01-31
Filing date: 2013-05-22
Publication date: 2014-08-07

Abstract

The present invention relates to an apparatus and a method for power generation diagnosis of a solar photovoltaic generation monitoring system in which maintenance is facilitated by comparing the estimated amount of power generation according to temperatures and the quantity of solar radiation with the actual amount of power generation and diagnosing solar photovoltaic generation. The apparatus comprises: multiple solar photovoltaic generation units including a solar cell module for converting and outputting solar energy into electrical energy; a solar photovoltaic generation measurement unit installed in each of the solar photovoltaic generation units for measuring the air temperature, the temperature of the solar cell module, the quantity of horizontal solar radiation, the quantity of incident solar radiation, and the amount of power generation; a solar photovoltaic generation diagnosis unit for calculating a power generation operation rate of the solar photovoltaic generation units by estimating the amount of power generation of the solar photovoltaic generation units on the basis of the variety of information measured by the solar photovoltaic generation measurement unit and comparing the estimated amount of power generation with the actual amount of power generation; and a solar photovoltaic generation monitoring unit for receiving the variety of information diagnosed by the solar photovoltaic generation diagnosis unit and monitoring power generation status, observation, diagnosis, analysis, and reports.

Description

【Specification】

[Name of invention]

Power generation diagnosis device and method of solar power monitoring system

Technical Field

The present invention relates to a power generation diagnostic apparatus and method of the photovoltaic power generation monitoring system, and more particularly, to a power generation diagnostic apparatus and method of a photovoltaic power generation monitoring system for diagnosing maintenance and generation efficiency of photovoltaic power generation.

Background Art

In order to achieve the challenge of depleting fossil fuels and protecting the environment, interest in renewable energy is increasing. In particular, the photovoltaic power generation system which converts unlimited solar energy directly into electric energy without pollution among new renewable energy, Since the control unit is composed of semiconductor elements and electronic components, there is no mechanical vibration and noise, and the cost of operation and maintenance can be minimized.

The photovoltaic power generation system is made by converting solar energy into electrical energy and supplying it to a load to be used, and a grid-connected photovoltaic power generation system supplying DC power generated from the solar cell to a commercial power line in real time through an inverter. And, it is divided into a stand-alone photovoltaic system that stores the direct current generated from solar electronics in the battery through the charger and supplies it to individual loads in the form of alternating current or black so that it can be used even at night when no power is generated.

However, solar cells are the smallest unit that generates electricity using sunlight, and solar cells cannot obtain proper voltage and current.

Therefore, in order to obtain proper voltage and current for the photovoltaic power generation system, solar cells are manufactured in the form of modules by connecting a plurality of solar cells in series and parallel, and compressing them with filler and glass to protect them from the external environment. It can be used alone or a solar cell array in which a plurality of solar cell modules are connected in series or in parallel for large power generation.

The solar cell modules constituting the solar cell array are damaged due to its own pollution, deterioration, and poor wiring, but the solar cell module failed in a large unit complex. It would be difficult to find one, but there was a burden to stop the operation of the solar cell array consisting of a plurality of solar cell modules in order to find and repair the failed solar cells.

In addition, it is difficult to find the cause in real time when one of the solar cell arrays constituting the solar cell array fails, and the inefficiency of inspecting the entire solar cell array increases the post-treatment cost and reduces the amount of generation. This year, profitability worsened.

In addition, the solar power generation system has been limited in maintenance because it is installed in many areas instead of only one area.

[Detailed Description of the Invention]

[Technical problem]

The present invention is to solve the above problems, the power generation diagnostic apparatus of the solar power monitoring system to receive the power generation status of the solar power monitoring system installed in each region through the network to monitor in real time to facilitate the maintenance And to provide a method.

In addition, the present invention is to calculate and monitor the development status of the photovoltaic power generation monitoring system installed in each region by the tanking of the power generation diagnosis device and method of the solar power monitoring system to induce rapid Daewoong of field managers to increase power generation efficiency The purpose is to provide.

In addition, an object of the present invention is to provide a power generation diagnostic apparatus and method of the solar power monitoring system to facilitate the maintenance by diagnosing the photovoltaic power generation by comparing the predicted power generation amount and the actual power generation amount according to temperature and solar radiation.

Technical Solution

The power generation diagnostic apparatus of the solar power monitoring system according to the present invention for achieving the above object is a plurality of photovoltaic power generation unit including a solar cell converting and outputting solar energy into electrical energy, each solar A photovoltaic power generation unit installed in the photovoltaic unit and configured to measure atmospheric temperature, solar cell temperature, horizontal solar radiation, inclined solar radiation, and power generation; and various types of information measured by the solar power measurement unit. Predicting the amount of wealth generated Photovoltaic power generation diagnosis unit that calculates the power generation maintenance rate of the solar power generation unit by comparing the actual power generation, and various types of information diagnosed by the photovoltaic power generation diagnosis unit are transmitted through a network to generate power generation status, monitoring, diagnosis, analysis and report. Characterized in that it comprises a photovoltaic monitoring unit for monitoring.

In addition, the power generation diagnostic method of the photovoltaic power generation monitoring system according to the present invention comprises the steps of collecting data on the slope, insolation, modal temperature and power generation effect for the place where the photovoltaic power generation unit; Calculating a predicted power generation amount of the solar power generation unit installed on the basis of the collected data; Calculating a power generation maintenance rate by comparing the predicted power generation amount with the actual power generation power generated from the solar power generation unit; Analyzing the calculated power generation maintenance rate, if there is a difference of ± 20% between the predicted power generation and actual power generation, characterized in that it comprises a step of notifying the manager. Advantageous Effects

Power generation diagnostic apparatus and method of the solar power monitoring system according to the present invention has the following effects.

First, it is possible to smoothly maintain and monitor the development status (power generation efficiency, monitoring, diagnosis, etc.) of the photovoltaic monitoring system installed in each region through real-time monitoring.

Second, by calculating and monitoring the development status of the photovoltaic power generation monitoring system installed in each region, it is possible to increase the efficiency of power generation by inducing the prompt Daewoong of field managers.

Third, it is possible to facilitate maintenance by diagnosing the installed photovoltaic power generation by comparing the predicted power generation amount according to the modal temperature and the inclined solar radiation amount with the actual power generation amount.

Fourth, it is possible to accurately grasp the efficiency of the photovoltaic unit by comparing the actual amount of power generation with the reference power generated from the photovoltaic units.

[Brief Description of Drawings]

1 is a schematic view showing a power generation diagnostic apparatus of a solar power monitoring system according to the present invention

FIG. 2 is a schematic view showing the solar power measuring unit of FIG. 1. FIG. 3 is a schematic view showing the solar power generation diagnostic unit of FIG.

4A and 4B are graphs comparing the generation amount prediction unit of FIG. 3 and the actual generation amount measurement unit. FIG. 5 is a schematic view illustrating the solar power generation monitoring unit of FIG. 1.

6 is a screen showing the current state of development in the solar power monitoring system according to the present invention

7A to 7C are monitoring screens in the solar power monitoring system according to the present invention. FIGS. 8A and 8B are diagnostic screens in the solar power monitoring system according to the present invention. FIG. 9 is the power generation of the solar power monitoring system according to the present invention. Screen of Diagnostic Device FIG. 10 is a diagram illustrating a relationship between inclined plane insolation, modal temperature, and power generation efficiency in a three-dimensional graph in a power generation diagnostic method of a solar power monitoring system according to the present invention. FIG. 11 is a screen showing filtered data in FIG. 10.

12 is a screen of estimating prediction data using normal data

13 is a flow chart schematically showing a power generation diagnostic method of a photovoltaic power generation monitoring system according to the present invention.

[Form for implementation of invention]

Hereinafter, a power generation diagnosis apparatus and method of a solar power monitoring system according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. The accompanying drawings show exemplary forms of the present invention, which are provided to explain the present invention in more detail, and the technical scope of the present invention is not limited thereto.

In addition, irrespective of the reference numerals, the same or grander components will be given the same reference numerals, and redundant description thereof will be omitted. For convenience of description, the size and shape of each component may be exaggerated or reduced. have.

1 is a schematic view showing a power generation diagnostic apparatus of a solar power monitoring system according to the present invention, FIG. 2 is a schematic view showing a photovoltaic power measuring unit of FIG. 1, and FIG. 3 is a photovoltaic view of FIG. 1. It is a block diagram which shows the power generation diagnosis part schematically.

Power generation diagnostic apparatus of the solar power monitoring system according to the present invention, as shown in Figure 1, converts the solar energy into electrical energy to output A plurality of solar power generation unit (no) comprising a solar cell model 111, and installed in each of the solar power generation unit 110, the atmospheric temperature and solar cell model temperature, the horizontal plane solar radiation and the slope solar radiation, the amount of power generation The photovoltaic power generation unit 120 and the solar power generation unit 110 estimate the amount of power generation on the basis of various information measured by the photovoltaic power generation unit 120 and compare the actual power generation amount. Photovoltaic power generation diagnosis unit 130 for calculating the power generation retention rate of the photovoltaic unit 110 and various types of information diagnosed by the photovoltaic power generation unit 130 are received through a network, and the power generation status, monitoring and diagnosis It is configured to include a solar power monitoring unit 140 to monitor the analysis report.

Here, the photovoltaic unit 110 may be installed in the same region, but is configured to produce electrical energy by installing the regions in different regions.

The photovoltaic unit 110 is configured of at least one of the fixed, tracking or BIPV.

The horizontal surface solar radiation amount means the solar radiation incident on the installation site where the solar power generation unit 110 is installed, and the inclined surface radiation amount means the solar radiation incident on any one of the solar cell modules 111. Here, the horizontal plane solar radiation amount means a general solar radiation amount. The horizontal plane solar radiation amount can be measured by installing a horizontal plane solar radiation sensor at the installation position. This horizontal plane solar radiation sensor always maintains the angle of the incident light face irrespective of the position of the sun over time. This horizontal solar radiation sensor may be positioned between the solar sensor arms. At this time, the horizontal solar radiation sensor may be located in the center of the photovoltaic unit 110.

Meanwhile, the inclined plane solar radiation amount may be measured by attaching the inclined plane solar radiation sensor to the light incident surface of the solar cell mothers 111. The inclined plane solar radiation sensor may be attached to only one solar cell cap 111, or may be attached to all solar cell caps 111 one by one. At this time, each of the solar cell modules 111, since their polar angle and azimuth angle are automatically adjusted according to the time so that their incident surface always follows the direction of the sun, the amount of inclined solar radiation attached to these solar cell caps 111 The light incident surface of the sensor also always faces the sun.

The solar power generation diagnostic unit 130 presets the amount of insolation, mode temperature, and total power By measuring at regular time intervals, a plurality of slope solar radiations, a plurality of model temperatures and a plurality of total powers, which are divided by time period, are calculated, and the calculated predicted generation amount is compared with the actual generation amount. The power generation maintenance rate of the photovoltaic unit 110 is calculated.

The photovoltaic monitoring unit 140 displays a list of statuses, monitoring, diagnosis, analysis, reports, and settings, and the administrator clicks on each list as necessary to display the power generation status of the photovoltaic unit 110. do.

The photovoltaic power measuring unit 120 is installed in the photovoltaic unit 110 and the temperature measuring unit 121 for measuring the atmospheric temperature and the module temperature, as shown in FIG. The solar radiation measuring unit 122, the power generation unit 123 for measuring the amount of power generation of the photovoltaic unit 110, and the snow accumulated on the solar cell caps 111 of the photovoltaic unit 110 And a camera unit 124 for monitoring the surroundings with the fallen leaves.

Here, the temperature measuring unit 121 is attached to the solar cell module 111 constituting the photovoltaic unit 110 to measure the temperature and together with the ambient temperature around the solar cell mother 111 Measure and send.

The solar radiation measuring unit 122 simultaneously measures the horizontal solar radiation horizontally with the ground along with the inclined solar radiation according to the angle of the solar cell mother 111 and sends it.

The generation amount measuring unit 123 measures and sends the amount of power generated from each of the photovoltaic units 110 in real time.

The camera unit 124 may be installed above the solar cells so as to monitor the whole area in the region where the solar power generation unit 110 is installed, and monitor various kinds of theft or accidents. .

As illustrated in FIG. 3, the photovoltaic power generation diagnosis unit 130 includes a generation amount prediction unit 131, a relational expression generation unit 132, a constant extraction unit 133, an actual generation amount generation unit 134, and an efficiency calculation unit. (135).

The generation amount predicting unit 131 measures the amount of inclination of the inclined planes, the plurality of the mode temperatures, and the total power of the plurality of slopes divided by each time zone by measuring the inclined plane insolation, the modal temperature, and the total power at predetermined time intervals. Predict. The relationship generator 132 generates a regression equation that defines a relationship between the slope insolation and the modal temperature and the total power based on the predicted power generation amounts from the power generation predictors 131.

The constant extractor 133 obtains a value for each of the plurality of constants included in the regression equation through a learning algorithm.

The actual power generation unit 134 measures the slope insolation, the modal temperature and the total power at predetermined time intervals during the actual operation period, so that the plurality of slope insolations, the plurality of mode temperatures and the plurality of total powers divided by each time zone Generate real data about the fields. One real data has data on slope insolation, mode temperature and total power at a specific time.

The efficiency calculator 135 defines the amount of total power included in any one specific real data from the actual power generation generator 134 as the actual power. Subsequently, the constants from the constant extracting unit 133 are substituted into the regression equation from the relation generating unit 132, and the reference slope is calculated by substituting the specific slope solar radiation amount and the specific model temperature included in the specific real data into the regression equation. . In addition, the calculated maintenance power of the photovoltaic unit 110 is calculated by comparing the calculated reference power with the defined real power.

4A and 4B are graphs comparing the generation amount prediction unit of FIG. 3 with the actual generation amount measurement unit.

As shown in FIG. 4A, it can be seen that power generation efficiency data of the power generation amount predicting unit and the actual power generation amount measuring unit are almost similar. Here, red is actual power generation data, and blue is power generation prediction data.

As shown in Figure 4b, it can be seen that the generation efficiency data of the power generation prediction unit and the actual power generation measurement unit is a difference for a certain period of time, which is high solar radiation, but the solar radiation is good while the snow accumulated on the previous day on the solar cells, but the solar light It can be seen that the power generation is not normal, so the actual power generation falls.

5 is a configuration diagram schematically showing the solar power monitoring unit of FIG.

The solar power monitoring unit 140, as shown in Figure 5, the generation of electric power to display the day-to-day generation power and current generation power, horizontal and inclined solar radiation, atmospheric and module temperature for each site The status section 141, the power generation efficiency display unit 142 for displaying the power generation efficiency, current power generation, power generation trend of the photovoltaic unit 110, and each site installed with the photovoltaic unit 110 Status-specific status section 143 for displaying power generation efficiency, power generation counting section 144 for displaying facility capacity, power generation amount and power generation amount of each solar power generation section 110, and each of the photovoltaic power generation sections A tanking display unit 145 for displaying tanking based on the amount of power generation and the maintenance state of the power generator 110; A time transition section 146 is configured.

The power generation status unit 141 receives the various information measured by the photovoltaic power generation unit 120 through a communication network to compare and display the amount of power generation and the current generation amount so that the manager can easily grasp. Therefore, the manager recognizes that there is an abnormality in the connection panel and the inverter including the solar cells constituting the photovoltaic unit 110 when there is a big difference in the amount of generation of power generation and today, even though there is no particular difference in weather conditions. And make a diagnosis.

In addition, the power generation efficiency display unit 142 displays the state of the power generation amount in the form of a graph every hour, and displays the scale with a number that the administrator can visually identify.

The site-specific status unit 143 displays the amount of power generated by each site in the region in which the photovoltaic unit 110 is installed, along with the power generation efficiency (%) of the photovoltaic unit 110 installed by site. h) are separated to identify.

The power generation unit 144 displays the facility capacity (KWh) of the photovoltaic unit 110 installed at each site, and displays the amount of power generation and the amount of power generation by day, month, and year, thereby allowing the manager to view the amount of power generated at a glance. You can see the amount of development.

That is, the generation counting unit 144 displays the current generation amount, the current generation amount, this year's generation amount, today's generation amount, this month's generation amount, and this year's generation amount, so that the manager can easily check the generation amount together with the total generation amount.

The tanking display unit 145 calculates the power generation time, the number of emergency alarms, and the alarm holding time at weekly intervals, and gives a ranking such as gold, silver, and copper for each site. Managers can be encouraged more quickly. According to site-specific reporting, the number of items included in the tanking can be identified quarterly or yearly to promote awards, which can increase the morale of site managers.

The power generation time shifting unit 146 may check the power generation time of each of the photovoltaic power generation units 110 by clicking the data classification part so that the power generation time may be divided into daily, weekly, monthly, and annually.

On the other hand, the above is an example showing the integrated, site-specific power generation status in the photovoltaic power generation monitoring system according to the present invention is shown in FIG.

That is, Figure 6 is a screen showing the current state of power generation in the solar power monitoring system according to the present invention.

As shown in FIG. 6, the site manager or the general manager may monitor the generation total amount and ¾¾, and the development time trend in real time, including the generation status for each site through the screen.

7a to 7c is a monitoring screen in the solar power monitoring system according to the present invention.

As shown in FIG. 7A, when the map portion is clicked on the monitoring screen, the place where the solar power generation unit 110 is installed can be checked at a glance on a map or a satellite, and the site state can be confirmed through the camera unit.

In addition, the solar cell module capacity, inverter capacity, generation time / number of days of the photovoltaic unit 110 installed for each site can be confirmed by the number, and tanking can be checked in the site list for each site.

In addition, the map displays a place where the solar power generation unit is installed, and when the solar power generation unit operates normally, an orange caution or a red warning blinks when there is a communication network or a power generation abnormality.

In addition, when the green, orange, and red parts are clicked on the map, the current operating state, generated power, inclined solar radiation amount, and module temperature can be checked.

As shown in Figure 7b, you can see the abnormality of the inverter, switchgear, main and sub-banks in all the sites where the photovoltaic power generation unit is installed, as shown in FIG. Directly by the administrator There is a number.

As shown in FIG. 7C, when the network part is clicked, the communication state of the current network can be checked including various sensors, operation states of the solar power generation unit, and whether there is an abnormality in the connection panel. The color can be checked directly by the administrator.

Therefore, in the photovoltaic power generation monitoring system according to the present invention, the monitoring part can monitor the GIS-based information, the measurement information for each facility, and the network status in real time, so if an abnormality occurs, it is necessary to contact the site manager and promptly deal with the power generation efficiency. Can be further improved.

8a and 8b is a diagnostic screen in the solar power monitoring system according to the present invention.

As shown in FIG. 8A, when the diagnosis part is clicked, the place where the solar power generation unit 110 is installed can be checked at a glance on a map or a satellite, and the site state can be confirmed through the camera unit.

In addition, the solar cell model capacity, inverter capacity, generation time / number of days of the photovoltaic unit 110 installed by site can be confirmed by a similar number, and tanking can be confirmed in the site list for each site.

In addition, it is possible to check the daily power generation addition, the slope solar radiation, the generation power, the module temperature, the generation power, the conversion efficiency, the daily generation amount, the daily generation amount, the daily generation time, and the monthly generation time.

In addition, it is possible to check the power generation status of each string constituting the solar power generation unit, and to check the power generation status of each inverter and the connection panel power generation status.

As shown in FIG. 8B, the inverter power generation status includes the type of inverter, capacity, operating state,

AC / DC power and measurement date and time can be checked.

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

In addition, the power generation status of each string can confirm the facility capacity, current power, load rate, and measurement date and time of each string.

9 is a screen of the power generation diagnostic apparatus of the solar power monitoring system according to the present invention. As shown in FIG. 9, when the predicted generation amount according to the modal temperature of 18.2 ⁰ C and the insolation of the inclined plane of 573W / n is 771kW according to the user's setting including the daily generation amount, the actual generation amount is 921kW. In other words, when a generation amount difference of ± 20% is known to increase power generation efficiency, the manager is automatically notified of any abnormality among the solar power generation unit, the inverter, and the connection board.

Therefore, in the photovoltaic power generation monitoring system according to the present invention, it is possible to diagnose the power generation status of each site through the diagnosis screen and to check the power generation status of the inverter, the connection board, and the string, so if there is an abnormality in power generation, contact the site manager. Rapid treatment can improve power generation efficiency.

FIG. 10 is a diagram illustrating a relationship between inclined solar radiation, module temperature, and power generation efficiency in a three-dimensional graph in a method for diagnosing power generation of a solar power monitoring system according to the present invention.

The relational expression generator 132 of FIG. 3 calculates a regression equation based on the prediction data as shown in FIG. 3, which will be described in more detail as follows.

First, the relation generation unit 132 may include slope insolations (x _u , x ₁₂ , .., xm) and modal temperatures (x ₂₁ , x ₂₂ ,..., X included in n prediction data. _2n ) and the total powers (y, y ₂ ,.

[Equation 1]

In Equation 1, the elements (xll, χ12, ..., xln) located in the first column mean slope insolation according to time zone, and the elements (x21, x22, xln) in the second column represent The time zones mean all the temperatures, and the elements (yl, y2, ... yn) located in column 3 represent the total powers per hour Λ. As can be seen from Equation 1, for example, the first prediction data includes the slope insolation for element xll, the modal temperature corresponding to element x21, and the total power for element yl.

Thereafter, the relation generation unit 132 generates a regression equation defined by Equation 2 below based on Equation 1 above.

[Equation 2]

The constant extractor 133 obtains a value for each of the constants included in the regression equation using a least square method as a learning algorithm.

To this end, the constant extractor 133 first obtains an extension matrix defined by Equation 3 below.

[Equation 3]

rl c λΑ Λ number extracting unit 133 calculates a determinant defined by Equation 4 below.

[Equation 4]

Here, y in Equation 4 has a determinant defined by Equation 5 below. [Equation 5]

Meanwhile, w in Equation 4 has a determinant defined by Equation 6 below.

[Equation 6]

When the values for each of the constants are obtained by the equations (3) to (6), the constant extractor 133 supplies the values for the constants to the efficiency calculator 135.

Then, the efficiency calculator 135 completes the relation by substituting the values of these constants into the regression equation described above.

FIG. 11 is a screen illustrating filtered data in FIG. 10, and FIG. 12 is a screen illustrating prediction data using normal data.

As shown in FIG. 11, abnormal data is filtered using a regression equation. The blue part is normal data and the red part is abnormal data.

In addition, as shown in FIG. 12, prediction data is estimated using normal data. The user may input a specific inclined solar radiation amount and a specific model temperature included in specific real data to the efficiency calculator 135 to determine the power generation maintenance rate of the photovoltaic unit 110 during a real operation period. Then, the efficiency calculator 135 calculates the reference power by substituting this specific inclined solar radiation amount and the specific model temperature into the above-described regression equation. And the actual electric power actually generated from the photovoltaic part 110 is computed by this specific slope insolation amount and specific model temperature. Subsequently, the calculated maintenance power is calculated by substituting the calculated reference power and real power into Equation 7 below.

[Equation 7]

Here, the power generation maintenance rate is a ratio of actual power that is actually being generated to the reference power to be generated by the solar power generation unit, it is an indicator indicating how well the efficiency of the system is maintained. The lower the efficiency of the system, the lower the maintenance rate.

The efficiency calculating unit 135 according to the present invention may periodically calculate the power generation maintenance rate to diagnose the efficiency of the system. When the power generation maintenance rate falls below a predetermined value, the efficiency calculation unit 135 may determine a failure and notify the user.

As described above, in the present invention, since the system model is constructed by considering all the matters of the place where the photovoltaic units 110 are initially installed, the most optimal system model may be constructed at each place. For example, even if the same photovoltaic unit and inverter are installed in place A and B, the power line connecting the photovoltaic unit and the inverter becomes longer or shorter depending on the characteristics of the place. Deviation may occur.

In the present invention, since the deviations in power generated by these locations are all considered while calculating the predicted generation amount, the system model most optimized for each location can be set.

On the other hand, the present invention can periodically correct the predicted amount of power generation by periodically testing the solar power generation unit. In other words, there is a difference in solar radiation (horizontal solar radiation and inclined solar radiation) and temperature (outer air temperature and modal temperature) for each season.In consideration of this, the solar power generation unit is initialized and tested every season to obtain the most optimized predicted power generation for the season. Can be built. That is, a regression equation with different constants can be generated every season.

13 is a flowchart schematically illustrating a power generation diagnosis method of a solar power monitoring system according to the present invention.

As shown in FIG. 13, the method for diagnosing the power generation of the solar power monitoring system according to the present invention includes a slope insolation, modal temperature and Collecting power generation efficiency data (S110).

Subsequently, the predicted power generation amount of the solar power generation unit installed on the basis of the collected data is calculated (S120).

Here, the predicted generation amount generates prediction data for slope insolation, a plurality of module temperatures, and a plurality of total powers, and calculates the predicted generation amount based on the generated prediction data.

Subsequently, a power generation maintenance rate is calculated by comparing the predicted power generation amount with the actual power generation power generated from the solar power generation unit (S130).

Here, the predicted generation amount is calculated by substituting the specific inclined solar radiation amount and the specific model temperature included in the specific real data into the regression equation, and comparing the calculated predicted generation amount with the actual generated generation amount to calculate the generation maintenance rate of the photovoltaic power generation unit. Calculate.

In addition, if the difference between the predicted generation amount and the actual generation amount occurs by analyzing the calculated power generation maintenance rate, the manager is notified of this (S140). Therefore, the power generation diagnostic apparatus and method of the photovoltaic monitoring system according to the present invention is a solar power generation unit, inverter, connection panel when the amount of solar radiation and silver does not go up as much as desired even if it has the optimal data value for solar power generation It is possible to further improve the power generation efficiency by diagnosing the abnormality in at least one place and processing it more quickly.

On the other hand, the present invention described above is not limited to the above-described embodiment and the accompanying drawings, it is possible that various substitutions, modifications and changes within the scope without departing from the technical spirit of the present invention It will be apparent to those skilled in the art.

Claims

[Range of request]

[Claim 1]

A plurality of solar power generation units including solar cells converting solar energy into electrical energy and outputting the same;

Solar power generation unit installed in each of the solar power generation units to measure the air temperature, solar cell temperature, the horizontal surface solar radiation and the slope surface solar radiation, the amount of power generation;

A photovoltaic diagnosis unit for predicting the amount of generation of the photovoltaic unit based on various information measured by the photovoltaic generation unit and comparing the actual amount of power generation and calculating a maintenance rate of the photovoltaic unit;

Development of a solar power monitoring system comprising a photovoltaic power monitoring unit configured to receive the various information diagnosed by the photovoltaic power generation diagnosis unit through a network and monitor a power generation status, monitoring, diagnosis, analysis, and report. Diagnostic device.

[Claim 2]

The method of claim 1, wherein the solar power measuring unit

A temperature measuring unit for measuring the air temperature and the modal temperature;

Is installed on the photovoltaic power generation unit and the solar radiation measuring unit for measuring the horizontal solar radiation and the inclined solar radiation amount,

A power generation amount measuring unit measuring a power generation amount of the solar power generation unit;

The power generation diagnostic apparatus of the solar power monitoring system, characterized in that it comprises a camera unit for monitoring the surroundings with snow or fallen leaves stacked on the solar cell module of the solar power generation unit.

[Claim 3]

The method of claim 1, wherein the solar power diagnostic unit

A generation amount prediction unit for predicting generation amount based on generation amount for the inclined plane solar radiation, a plurality of model temperatures and a plurality of total powers;

A relational expression generator for generating a regression equation that defines a relationship between slope insolation and modal temperature and total power based on predicted generation amounts from the generation amount prediction units; A constant extractor that obtains a value for each of a plurality of constants included in the regression equation through a learning algorithm;

An actual power generation unit for generating actual data for the plurality of inclined plane solar radiation, a plurality of model temperatures, and a plurality of total powers;

And an efficiency calculation unit defining an amount of total power included in any one specific real data from the actual power generation unit as the actual power.

[Claim 4]

According to claim 1, The solar power monitoring unit is a list of power generation status, power generation monitoring, power generation diagnosis, analysis, reports, settings are displayed, the administrator clicks each list as necessary to generate power of the solar power generation unit Power generation diagnostic device for photovoltaic power generation monitoring system, characterized by displaying the current status.

[Claim 5]

According to claim 1, wherein the solar power monitoring unit

Development status section for displaying the full-day power generation and current generation power, horizontal and inclined solar radiation, atmospheric and module silver road by the site where the solar power generation unit is installed,

A power generation efficiency display unit displaying power generation efficiency, current power generation, and power generation trends of the solar power generation unit;

A status sheet for each site displaying power generation efficiency for each site in which the solar power generation unit is installed;

A power generation counting unit which displays the facility capacity, power generation amount, and power generation amount of each solar power generation unit;

A ranking display unit displaying tanks based on the amount of power generation and maintenance state of each of the photovoltaic units;

The power generation diagnostic apparatus of the solar power monitoring system, characterized in that it comprises a power generation time transition unit for displaying the power generation time, the maximum power generation time, the daily average amount of power, the sum of the amount of power.

[Claim 6]

The method of claim 5, wherein the power generation status is measured from the photovoltaic power measurement unit Power generation diagnosis device for solar power monitoring system, characterized in that the information received through the communication network to display the comparison between the current generation and the current generation so that the administrator can easily grasp.

[Claim 7]

[6] The power generation diagnosis system of claim 5, wherein the power generation counting unit displays facility capacity of the solar power generation unit installed at each site, and displays generation amount and generation amount in days, months, and years. Device .

[Claim 8]

The solar power monitoring system according to claim 5, wherein the ranking display unit calculates power generation time, emergency alarm number, and alarm holding time at a weekly interval to give a ranking such as gold, silver, and copper for each site. Power generation diagnostic equipment.

[Claim 9]

The power generation display system of claim 5, wherein the power generation efficiency display unit displays the state of power generation in a graph form every hour, and displays the numbers with a scale so that management can visually identify the power generation. Diagnostic device.

[Claim 10]

The power generation diagnostic apparatus of claim 5, wherein the power generation time shifting unit displays the power generation time of each of the photovoltaic power generation units in a daily, weekly, monthly, and yearly manner.

[Claim 11]

The apparatus for diagnosing power generation of a solar power monitoring system according to claim 1, wherein the solar tube power generating unit is installed in a same area or a different area to produce electrical energy.

[Claim 12]

Collecting slope insolation, mode temperature and power generation efficiency data for a location where the solar power generation unit is installed;

The estimated power generation of the photovoltaic generation unit installed on the basis of the collected data Calculating step;

Calculating a power generation maintenance rate by comparing the predicted power generation amount with the actual power generation power generated from the solar power generation unit;

And a step of notifying the manager when a difference of ± 20% is generated between the predicted generation amount and the actual generation amount by analyzing the calculated power generation maintenance rate.