KR101066064B1 - Motorning apparatus for solar cell module and method thereof - Google Patents

Abstract

The present invention relates to a remote monitoring device and method of a solar module, and more particularly, to determine whether each cell module has a failure in each cell array including a plurality of solar cell modules. The present invention relates to a remote monitoring device and method for a photovoltaic module, which can be set at a combined group and measure and compare average power of each group so that failure of each cell module can be confirmed at a long distance.
According to a first embodiment of the present invention, there is provided a remote monitoring apparatus for a solar module according to the present invention, wherein at least one cell array for converting and outputting sunlight into electricity is arranged in at least one row and column; Measurement means installed in each of the cell modules to sense output power and wirelessly transmit the signal; If it is less than the reference value, the monitoring server determines whether there is a failure of the corresponding cell module by calculating the average value of the output values of all the cell modules to which the corresponding cell module belongs, and is set as the reference value of the output value of the cell module according to the amount of sunshine according to season and time. It includes a database for storing the reference value and the contextual reference value for setting the reference of the output value by the difference in the amount of light incident on the cell module .

Description

Remote monitoring apparatus and method of solar module {Motorning apparatus for solar cell module and method

The present invention relates to a remote monitoring device and method of a solar module, and more particularly, to determine whether each cell module has a failure in each cell array including a plurality of solar cell modules. The present invention relates to a remote monitoring device and method for a photovoltaic module, which can be set at a combined group and measure and compare average power of each group so that failure of each cell module can be confirmed at a distance.

A solar cell management system that is generally used is a solar cell formed of a plurality of solar cell (10a1-10an-n, 10b-1 ~ 10b-n, 10n-1 ~ 10n-n) of the cell type as shown in FIG. The communication device 4 is designated as a group 2a ... 2d on the panel and provided with a communication device 4 for each group 2a, 2b, 2c, 2d or for each cell module 110a to 170b. The remote management server (3) controls, manages, and monitors group solar cells.

However, even if the module of the solar panel formed in a plurality of cell form as described above to control by forming a group, if one solar panel out of a plurality of solar panels fail, the administrator to determine whether one solar panel failure In order to inspect all solar panels one by one, there was a problem that only the failed solar panels had to be identified.

And, in order to operate the communication device for transmitting the operation state of the solar panel to the remote management server, a separate power supply must be provided. When the solar panel absorbs solar energy, the sun immediately before sunset or immediately after sunrise Because the light intensity of the light is weak, the amount of solar energy absorbed by the solar panel shortly before sunset or immediately after sunrise is insufficient, and the malfunction of the solar panel is transmitted to the management server, indicating that the solar panel does not absorb the solar energy properly. There was a problem that the administrator has to re-examine the solar panel in accordance with the signal.

In addition, due to the solar radiation problem, solar power is generated at a significantly lower efficiency than the capacity of the solar panel, but in general, the manager checks all the solar panels directly to see which solar panel has failed in the group of solar panels. In order to maintain the solar panel, the maintenance efficiency of manpower is increased. If the solar panel is not maintained due to the management's negligence, the power generation efficiency of the solar panel is reduced. .

Therefore, conventionally, in order to solve the above problems, each cell module is provided with one communication device 4 to detect whether a failure of each cell module is transmitted wirelessly, and receives a detection signal transmitted from each cell module. It was determined whether or not there was a failure in one control unit.

However, conventionally, the amount of sunshine is different according to the weather and time zone, and the difference in the amount of light incident due to debris such as fallen leaves and dust is generated on the panel, but only by setting a limit value for each cell module 110a to 170b, it detects the output power level and malfunctions. Although the actual cell module does not have any abnormality, there is a problem in that the power supply level outputted by the photoelectric effect falls below the reference value due to external reasons.

The present invention has been made to solve the above-mentioned conventional problems, an object of the present invention is a level lower than the level set in any one of the cell module in the cell array panel is combined with a plurality of rows and columns each of the combination of the cell module The present invention provides a remote monitoring device and method for a solar module that can determine whether a failure occurs by calculating an average value of output power of cell modules of a row and a column to which the cell module belongs.

In addition, another object of the present invention is to set different conditions according to the difference in the amount of light due to weather, time, foreign matters, and compare the average value of the row and column of each cell module to the set conditions to determine whether there is a failure through the Internet The present invention provides a remote monitoring device and method for a photovoltaic module capable of remotely monitoring and correcting a failure by transmitting to a monitoring server.

The present invention includes the following embodiments in order to achieve the above object.

According to a first embodiment of the present invention, there is provided a remote monitoring apparatus for a solar module according to the present invention, wherein at least one cell array for converting and outputting sunlight into electricity is arranged in at least one row and column; Measuring means installed in each of the cell modules to sense output power and wirelessly transmit the signal; Monitoring server that calculates the average value of the output value of all cell modules of the row and column to which the module belongs, and the monitoring server to determine whether the corresponding cell module is broken, and the reference value set as the reference value of the output value of the cell module according to the amount of sunshine according to season and time, and the cell module. It includes a database for storing the reference value for each situation for setting the reference of the output value by the difference in the amount of light incident on the.

The second embodiment of the present invention, in the first embodiment, the remote monitoring device of the solar module further comprises a communication member for applying the measurement signal transmitted from the measuring means to the monitoring server via the Internet, The communication member may include an antenna for receiving a radio signal applied from the measuring means, a connection board connected to the antenna by wire, and a relay server and a TCP connected to the connection board to relay the measurement signal of the measuring means through the Internet. Includes / IP client and TCP / IP hub.

According to a third embodiment of the present invention, in the second embodiment, the measuring means are installed for each cell module to detect an output value and directly transmit it to the communication member.

In a fourth embodiment of the present invention, there is provided a remote monitoring method for a photovoltaic module including a monitoring server for remotely monitoring at least one cell module that converts and outputs sunlight into electricity. A setting condition storing step of setting a reference value of each output value of each of the one or more cell modules by comparing the amount of sunshine according to each condition by season and time zone; A module-specific measurement signal receiving step of receiving a measurement signal of an output value measured from each of the one or more cell modules; An average value calculating step of calculating an average value of a row and a column to which a corresponding cell module belongs when a measured value equal to or less than a set reference value is received by comparing the measured signal received in the module-specific measurement signal receiving step with a set reference value; A failure determination step of determining whether or not a failure is determined by comparing the average value of the one or more cell modules calculated in the average value calculation step with the reference value; And an alarm issuing step of outputting an alarm message on a display and storing it in the database so that an operator can check if the corresponding cell module is determined to be faulty in the fault determination step.

According to a fifth embodiment of the present invention, in the fourth embodiment, the reference value is a reference value of each cell module outputted according to seasons and time zones, and the amount of sunshine reduced according to a situation such as foreign matter or weather on the upper surface of the cell module. It is characterized by the situation-specific reference value for setting the average value of the power output by.

As described above, when the output value of any one cell module is reduced, the present invention calculates and compares an average value of all cell modules of a row and a column to which the cell module belongs, and thus appropriately detects a situation in which the amount of power output from the cell module is reduced. It can be determined that the failure of the cell module can be accurately determined, there is an effect of preventing unnecessary expenses due to misjudgment.

In addition, the present invention can receive the output value of each cell module through the Internet at a long distance, and can store the received data to calculate a reference value that can determine whether the failure by itself, the failure of the cell array located at a remote location by remote monitoring It can be judged whether it is very effective in management and maintenance.

1 is a block diagram showing an inspection apparatus of a conventional solar module,
Figure 2 is a block diagram showing a remote monitoring device for a solar module according to the present invention,
3 is a plan view showing a cell module in a remote monitoring device for a solar module according to the present invention;
Figure 4 is a flow chart illustrating a remote monitoring method of the solar module according to the present invention.

Hereinafter, with reference to the accompanying drawings, a preferred embodiment of a remote monitoring device and method of a solar module according to the present invention will be described in detail.

Figure 2 is a block diagram showing a remote monitoring device of the solar module according to the present invention, Figure 3 illustrates an example of the inspection method of the cell module (110a ~ 170b) in the remote monitoring device of the solar module according to the present invention. It is a simplified drawing for.

2 and 3, the present invention provides one or more cell arrays 100 and one or more cell arrays 110a to 170b for converting and outputting sunlight into a power source by a photoelectric effect and the cell module ( 110a to 170b is installed in each of the measuring means 200 for sensing the output power and wirelessly transmitting, the communication member (310 ~ 350) for relaying the detection signal applied from the measuring means 200 to the Internet, and The monitoring server 400 and the monitoring server (400) for determining whether or not a failure by calculating the average value of the combined power of each of the cell module (110a ~ 170b) according to the detection signal transmitted through the communication member (310 ~ 350) And a database 500 for storing the determination result of 400.

The cell array 100 is coupled to one or more cell modules (110a ~ 170b), each of the cell modules (110a ~ 170b) is coupled to the measuring means 200 to detect the output power level. Here, the cell array 100 is set to be partitioned into one or more groups by combining each cell module 110a to 170b forming a row and a column.

The measuring means 200 is installed for each cell module (110a ~ 170b) of the cell array 100 to detect the power level (for example, voltage) that is converted and output from the cell module (110a ~ 170b) Send it. Here, each of the measuring means 200 is given a unique identification code and transmits the measurement signal including its own unique identification code at the time of transmission.

In addition, the measuring means 200 is a signal transmitted from the measuring means 200 installed in the cell module of the first row first column (110a110b) is applied to the measuring means 200 of the first row second column (110a120b), The signal transmitted from the measuring means 200 of the first row second column 110a120b is measured together with the signal transmitted from the measuring means 200 of the first row first column 110a110b. Is applied to the means 200. In addition, the signal transmitted from the measuring means 200 of the first row third column 110a130b is different from the signal transmitted from the measuring means 200 of the first row first column 110a110b and the first row second column 110a120b. Together, it is transmitted to the measuring means 200 of the first row fourth column 110a140b. That is, the measuring means 200 is accumulated by the measurement signal of each measuring means 200 for each column or row through the adjacent measuring means 200 is transmitted in a batch.

Or preferably, the measuring means 200 of each cell module (110a ~ 170b) is a direct communication with the communication member (310 ~ 350) independently from each measuring means 200 by applying a communication device capable of long-range wireless communication In addition, the communication members 310 to 350 are preferable for remote monitoring through the Internet by collecting measurement signals transmitted from a plurality of cell arrays 100 installed in predetermined unit regions.

The communication member includes a connection panel 310, a relay server 320, an inverter 330, a TCP / IP client 350, and a TCP / IP hub 340. It receives the signal and converts the measurement signal to enable the Internet communication and relays it to the monitoring server 400 through the Internet.

The connection panel 310 transmits a detection signal applied from the measuring means 200 to the relay server 320. Here, the connection panel 310 is connected to the antenna and the relay server 320 transmitted from the measuring means 200, respectively.

The relay server 320 receives the measurement signal applied from the access panel 310 and the measurement signal through the Internet through the inverter 330, the TCP / IP client 350 and the TCP / IP hub 340 The relay to the monitoring server 400. The inverter 330, the TCP / IP client 350, and the hub 340 are generally basic components for internet communication, and thus description thereof will be omitted.

The monitoring server 400 sets a condition according to the amount of sunshine and the amount of light due to foreign matters per hour and weather, and compares the measured signal with the set condition to determine whether there is a failure for each cell module 110a to 170b. do. Here, the monitoring server 400, for example, November-February, March-May, June-August, September-October, each cell module (110a ~) for each morning, lunch, dinner, night time zone A reference value of the output power level of 170b) is set and stored in the database 500. In addition, the monitoring server 400 is the case that the foreign matter is accumulated on the upper surface of the cell module (110a ~ 170b) in the reference value when the amount of incident light is small and the weather is cloudy, the situation such as heavy weather and rain or snowy weather The amount of sunshine according to the reference value is set.

That is, for example, when the monitoring server 400 outputs 90% of the reference value, when there are heavy clouds and 80% is output, foreign matters are accumulated in the cell modules 110a to 170b, and 50% of the reference value. If it is less than or equal to set the reference value for each situation to determine that a failure has occurred in the database 500.

In addition, the monitoring server 400 stores the average value for the data of the output power for each cell module (110a ~ 170b) according to the measurement signal of the measuring means 200 in the database 500 for each time zone by date. The accumulation of such data is used as data in the setting of the reference value and the situational reference value in the monitoring server 400.

Here, the monitoring server 400 separates all the cell modules 110a to 170b included in one row and column into one group in order to set the reference value and the situation-specific reference value, and calculates an average value to calculate the reference value and the situation. By comparing each reference value, you can determine whether there is a failure. That is, the monitoring server 400 is a cell module corresponding to the row and column on the basis of the cell module if any one cell module in the measurement signal output from the cell module (110a ~ 170b) or less than the reference value ( For example, the average value of the three rows 130a and the four columns 140b of cell modules) is calculated to determine whether there is a failure.

The database 500 stores the date-specific time zone reference values and the situation-specific reference values as described above, and stores the measurement time-specific measurement values of the measurement means 200.

Hereinafter, a remote monitoring method of the solar module achieved through the remote monitoring apparatus of the solar module according to the present invention will be described in detail with reference to the following flowchart.

Figure 4 is a flow chart illustrating a remote monitoring method of the solar module according to the present invention.

Referring to FIG. 4, the remote monitoring method of the solar module according to the present invention includes a setting condition storing step (S11) of setting and storing a reference value and a reference value for each situation, and receiving a measurement signal for each cell module 110a to 170b. Compared to the reference value set in the measurement signal receiving step (S12) and each of the cell modules (110a to 170b) received in the measuring signal receiving step, if it is less than that, the rows 110a to 150a and the columns 110b of the entire cell module. An average value calculating step (S13) for calculating an average output value of the row and column to which the corresponding cell module belongs, and a failure determination step (S14) for comparing the reference value with the average value for each situation and determining whether or not the failure occurs; And an alarm issuing step (S15) for issuing an alarm in comparison with the reference value for each situation set in the determination step (S14).

The setting condition storing step (S11) is a column (110a to 150a) and a column forming the cell array 100 by comparing the amount of sunshine according to each condition by dividing the amount of sunshine according to each region and the season and the time zone in the monitoring server 400. An operation of setting the output reference values of the cell modules 110a to 170b of the cell modules 110b to 170b and the situational reference values according to the situation is stored in the database 500.

Here, the reference value for each situation sets a reduction ratio of the output values of the cell modules of the rows 110a to 150a and the columns 110b to 170b relative to the reference value, such as foreign matter or weather on the upper surface of the cell modules 110a to 170b. By setting the average value of the reduced power according to the situation compared to the output values of the cell modules 110a to 170b measured, whether the current output value of the cell modules 110a to 170b is decreasing or not due to the above situation. Set to determine whether the output value is reduced.

For example, the reference value for each situation is 90% of the output value compared to the reference value of the weather, 80% of the amount of incident light due to foreign matter, less than 50%, such as the output value of each cell module (110a ~ 170b) and the regional seasonal It can be appropriately set in different environments for each time zone and can be set arbitrarily according to the user's environment.

The module-specific measurement signal receiving step (S12) is a monitoring signal of the output value measured from the cell module of the entire row (110a ~ 150a) and columns (110b ~ 170b) of the cell array 100 in the monitoring server 400 Receiving. Here, the measuring means 200 is installed in the cell modules 110a to 170b, respectively, and measures the output values of the cell modules 110a to 170b and transmits the measured values through the connection panel 310 and the relay server 320.

In addition, the measuring means 200 is a communication method is a method of transmitting the accumulated measurement signal of the total measuring means 200 located in one row or one column by relaying the adjacent measuring means 200 as described above; It is also possible to apply a method of transmitting directly through the relay server 320 for each measuring means 200. Since this is a technology known to those in the industry that designers and operators can change the design, detailed description thereof will be omitted.

The average value calculating step (S13) receives the measurement signal transmitted by detecting the output value of each cell module (110a ~ 170b) in the measuring means 200 in the monitoring server 400 to set the measured value of each cell module Comparing with a reference value, and when a measurement value of less than the reference value is received, calculating the average value of the row (110a ~ 150a) and the column (110b ~ 170b) belonging to the cell module (110a ~ 170b).

Here, the monitoring server 400 distinguishes each cell module 110a to 170b through the unique code given to the measuring means 200 by measuring the measurement signals of the cell modules 110a to 170b and at the same time to each cell module ( The average cell value is calculated by dividing all the cell modules of the rows 110a to 150a and the columns 110b to 170b to one group.

For example, if the output values of the cell modules 110a to 170b in three rows and four columns are lower than the reference values, the monitoring server 400 may determine the three cell modules 140b in the three rows and the entire cell module 140b in the four columns. The average value is calculated.

 That is, the monitoring server 400 checks the unique code assigned to the measuring means 200 of the cell module 130a or 140b when the measured value of the cell module 130a or 140b is less than or equal to the reference value. An average output value of the groups is calculated by setting all cell modules 130a and 140b of the rows and columns to which the modules 130a and 140b belong as a group.

The failure determination step (S14) is the cell module (110a ~ 170b) by comparing the average value and the reference value for each situation of the group of the cell module (110a ~ 170b) calculated in the average value calculation step in the monitoring server 400 This is the step of determining the cause of the output value falling. Here, the monitoring server 400 compares the average operation value of the group of cell modules 110a to 170b with the reference value for each situation and stores the result in the database 500.

That is, the monitoring server 400 compares the result value of the average value calculating step (S13) with the reference value for each situation to determine whether the corresponding cell module (110a ~ 170b) or failure of the cell module (110a ~ 170b) If it is determined that the output value decreases due to foreign matter on the upper surface, a message for recommending cleaning is output on the display and stored in the database 500.

The alarm issuing step (S15) is an alarm on the display that can be checked by the driver if the cell module (110a ~ 170b) is determined to be a failure, the determination result of the failure determination step (S14) in the monitoring server 400 The message is output and stored in the database 500.

As described above, the present invention sets a reference value in different environments according to seasons and time zones, and sets various reference values for each situation in which the output value is lowered. Can be prevented.

The present invention is not limited to the above-mentioned specific preferred embodiments, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Such changes are intended to fall within the scope of the claims.

100: cell array 200: measuring means
310: connection panel 320: relay server
330: Inverter 340: TCP / IP hub
350: TCP / IP Client 400: Monitoring Server
500: database

Claims (5)

At least one cell array in which at least one cell module for converting and outputting sunlight into electricity is arranged in at least one row and column;
Measuring means installed in each of the cell modules to sense output power and transmit wirelessly;
Receive the measured value of each of the at least one cell module arranged in the row and column and compare the measured value with the set reference value, and if it is below the set reference value, calculate the average value of the output values of all the cell modules of the row and column to which the cell module belongs to Monitoring server to determine whether the failure; And
And a database storing a reference value set as a reference value of the output value of the cell module according to the amount of sunshine according to seasons and time zones, and a situational reference value for setting the reference value of the output value due to the difference in the amount of light incident on the cell module. Remote monitoring device for solar modules. The method of claim 1, wherein the remote monitoring device of the solar module
The communication member further comprises a communication member for transmitting a measurement signal transmitted from the measuring means to the monitoring server via the Internet, the communication member is connected to the antenna for receiving a radio signal applied from the measuring means, the wired connection to the antenna And a relay server, a TCP / IP client, and a TCP / IP hub, which are connected to the connection panel and relay the measured signals of the measuring means through the Internet. The method of claim 2, wherein the measuring means
Remote monitoring device for a photovoltaic module, characterized in that each installed by the cell module to detect the output value and transmit directly to the communication member. In the remote monitoring method of the solar module comprising a monitoring server for remotely monitoring the one or more cell module to convert the sunlight into electricity, the monitoring server,
A setting condition storing step of setting a reference value of each output value of the one or more cell modules by comparing the amount of sunshine according to each region, the season and the time zone, and storing the reference value of each of the output values of the one or more cell modules;
A module-specific measurement signal receiving step of receiving a measurement signal of an output value measured from each of the one or more cell modules;
An average value calculating step of calculating an average value of a row and a column to which a corresponding cell module belongs when a measured value equal to or less than a set reference value is received by comparing the measured signal received in the module-specific measurement signal receiving step with a set reference value;
A failure determination step of determining whether or not a failure is determined by comparing the average value of the one or more cell modules calculated in the average value calculation step with the reference value; And
If it is determined in the fault determination step that the cell module is a failure, remote monitoring of the photovoltaic module comprising an alarm issuing step of outputting an alarm message on the display for the operator to check and storing in the database Way. The method of claim 4, wherein the reference value is
The solar cell is characterized by setting a reference value of each cell module output by seasons and time zones, and an average value of power output by the amount of sunshine reduced by foreign matter or weather on the upper surface of the cell module. How to monitor the module remotely.

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