KR101630449B1 - System for intelligent solar monitoring using magnetic sensor - Google Patents

System for intelligent solar monitoring using magnetic sensor Download PDF

Info

Publication number
KR101630449B1
KR101630449B1 KR1020160022644A KR20160022644A KR101630449B1 KR 101630449 B1 KR101630449 B1 KR 101630449B1 KR 1020160022644 A KR1020160022644 A KR 1020160022644A KR 20160022644 A KR20160022644 A KR 20160022644A KR 101630449 B1 KR101630449 B1 KR 101630449B1
Authority
KR
South Korea
Prior art keywords
power generation
line
junction box
input
magnetic sensor
Prior art date
Application number
KR1020160022644A
Other languages
Korean (ko)
Inventor
고휴환
Original Assignee
주식회사 대은계전
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 주식회사 대은계전 filed Critical 주식회사 대은계전
Application granted granted Critical
Publication of KR101630449B1 publication Critical patent/KR101630449B1/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/02—Electric signal transmission systems in which the signal transmitted is magnitude of current or voltage
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/044—PV modules or arrays of single PV cells including bypass diodes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/30—Electrical components
    • H02S40/34—Electrical components comprising specially adapted electrical connection means to be structurally associated with the PV module, e.g. junction boxes
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Abstract

The purpose of the present invention is to provide a system for sensing an operation state of a photovoltaic power generation module as sensing a magnetic field and monitors a photovoltaic power generation amount for each time slot, stored in a database periodically. An apparatus which is connected to a junction box installed in each of a plurality of photovoltaic power generation modules and monitors a power generation state of the photovoltaic power generation modules, comprises: a plurality of junction box connectors which comprise a branch line which is connected to each input/output line of the junction box, a ㄱ-shaped power connection blade which electrically connects the input/output line and the branch line and of which one side is connected on the input/output line passing through a branch point where the branch line and the input/output line meet each other with respect to a current direction of the input/output line, a magnetic sensor which is installed on each of the input/output line before the branch point with respect to the current direction and senses a magnetic field according to a current of the input/output line, and a plurality of junction box connectors which comprise a circuit board which is connected to the magnetic sensor respectively to receive sensing information, and transmit the received sensing information; a control unit which receives the sensing information from the plurality of junction box connectors, measures current sensibility of each of the photovoltaic power generation modules, and determines whether each of the photovoltaic power generation modules is defective; a database which records a power generation amount for each time slot of each of the photovoltaic power generation modules; and a PLC-based simple server which extracts first data including information according to whether the each of the photovoltaic power generation modules is defective, from the control unit, the first data and second data according to the recording of the power generation amount for each time slot from the database and transmits information about the photovoltaic power generation amount with respect to an amount of solar radiation to a manager terminal.

Description

TECHNICAL FIELD [0001] The present invention relates to an intelligent photovoltaic power generation monitoring system using a magnetic sensor,

The disclosed technology relates to an intelligent solar photovoltaic monitoring system that senses a magnetic field and monitors the operating state of the solar module.

Solar power generation is becoming increasingly important both socially and economically because it can continuously use solar energy, a clean energy source. Therefore, investment and research and development have been continuing as the awareness of solar power generation has improved in all walks of life.

In order to take out the electricity in a useful form, a junction box or a connector for connecting the cables between the modules is installed in a module (hereinafter, simply referred to as " module " Respectively. A bypass diode and the like are disposed in the junction box and a study is made to minimize the influence even if the shadow of the PV module is partially shaded or the output of the module is lowered due to the failure of the battery cell ought.

Meanwhile, the key issue in solar power generation is how much energy can be produced simply by the amount of solar radiation, but operating the solar power generation facility efficiently is also an issue.

In a conventional photovoltaic power generation system, a solar cell is disposed at a place exposed to the outside so as to collect solar energy as much as possible for a long time. For example, it is preferable to be installed on a roof or a wide plain of a building.

However, since such a photovoltaic power generation system is used for a long period of time with the solar cell being exposed to the natural environment, interference factors such as foreign substances may cause the efficiency of the photovoltaic power generation to be deteriorated. For example, there may be a case where a module that needs to perform photovoltaic generation operates as a load due to the occurrence of discordance due to the accumulation of leaves or snow on the solar panel.

In the meantime, when a foreign substance that hinders the efficiency of light collection is generated in the solar cell as described above, not only the power generation efficiency is deteriorated but also the solar power generation system may malfunction, There is a need for technologies that not only monitor how much energy is generated, but also be prepared for these problems.

Korean Patent No. 10-1360401 (entitled "Photovoltaic Power Generation System Having Self-Diagnostic Function") is a prior art for a photovoltaic power generation system that detects an abnormality of a photovoltaic power generation module.

Korean Patent No. 10-1360401

The disclosed technology is to provide a system for monitoring the operation state of the solar power generation module as the magnetic field is sensed, and monitoring the solar power generation amount by time period stored in the database for each cycle.

According to a first aspect of the present invention, there is provided a system for monitoring a power generation state of a solar power generation module connected to a junction box installed in each of a plurality of solar power generation modules,

A branch line connected to the input / output line of the junction box, respectively; An 'A' power connection blade having one side connected to a line passing a branch point at which the branch line meets the input / output line with respect to a current direction of the line, the input / output line being electrically connected to the branch line; A magnetic sensor provided on the input / output line before the branch point with respect to the current direction to sense a magnetic field corresponding to the current of the line; A plurality of junction box connectors each connected to the magnetic sensor to receive sensing information and transmit the sensed information;

A control unit for receiving sensed information from the plurality of junction box connectors to measure current sensitivity of each solar power generation module and determining whether each solar power generation module is faulty;

A database for recording power generation amount by time of each of the solar power generation modules; And

Based on the first data including the information on the failure and the second data on the basis of the time-series generated amount in the database, and transmitting the information about the solar power generation amount to the administrator terminal And an intelligent solar power generation monitoring system using a magnetic sensor including a simple server.

Embodiments of the disclosed technique may have effects that include the following advantages. It should be understood, however, that the scope of the disclosed technology is not to be construed as limited thereby, since the embodiments of the disclosed technology are not meant to include all such embodiments.

According to one embodiment of the disclosed technology, an intelligent solar power generation system and method using a magnetic sensor provides an advantage of monitoring generation efficiency of a solar power generation module remotely through a manager terminal do.

In addition, it provides the advantage of detecting inconsistencies that may occur in the photovoltaic module and transmitting the information to the administrator terminal in real time and coping with it immediately.

In addition, the junction box connector provides an effect of improving the sensitivity and reliability of the magnetic sensor.

In addition, there is an advantage that it is free from the space limitation because a separate space and parts for connecting to the solar cell module are not required.

1 is a block diagram of an intelligent solar power generation system using a magnetic sensor according to an embodiment of the disclosed technology.
2 is a flowchart of an intelligent solar power generation method using a magnetic sensor according to an embodiment of the disclosed technology.
3 is a diagram showing an example in which inconsistency occurs in the disclosed technique.
Figure 4 illustrates a junction box connector according to one embodiment of the disclosed technique.
5 illustrates a junction box connector according to one embodiment of the disclosed technique.
6 is a schematic illustration of a circuit board of a junction box connector according to one embodiment of the disclosed technique.
Figure 7 illustrates a junction box connector bracket according to one embodiment of the disclosed technique.
8 is an exploded perspective view of Fig.

While the invention is susceptible to various modifications and alternative forms, specific embodiments thereof are shown by way of example in the drawings and will herein be described in detail. It should be understood, however, that the invention is not intended to be limited to the particular embodiments, but includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

The terms first, second, A, B, etc., may be used to describe various components, but the components are not limited by the terms, but may be used to distinguish one component from another . For example, without departing from the scope of the present invention, the first component may be referred to as a second component, and similarly, the second component may also be referred to as a first component. And / or < / RTI > includes any combination of a plurality of related listed items or any of a plurality of related listed items.

It is to be understood that the singular < RTI ID = 0.0 > terms < / RTI > used herein should be interpreted to include a plurality of representations unless the context clearly dictates otherwise. And "comprises ", when used in this specification, specify the presence of stated features, numbers, steps, operations, elements, parts, or combinations thereof, Or combinations thereof, as a matter of course.

Before describing the drawings in detail, it is to be clarified that the division of constituent parts in this specification is merely a division by main functions of each constituent part. That is, two or more constituent parts to be described below may be combined into one constituent part, or one constituent part may be divided into two or more functions according to functions that are more subdivided.

In addition, each of the constituent units described below may additionally perform some or all of the functions of other constituent units in addition to the main functions of the constituent units themselves, and that some of the main functions, And may be carried out in a dedicated manner. Accordingly, the presence or absence of each component described in this specification should be interpreted as a function.

FIG. 1 is a block diagram of an intelligent solar power generation system using a magnetic sensor according to an embodiment of the disclosed technology, FIG. 2 is a flowchart illustrating an intelligent solar power generation monitoring method using a magnetic sensor, FIGS. 4 and 5 are views showing a junction box connector according to an embodiment of the disclosed technology, and FIG. 6 is a perspective view showing a junction box connector of a junction box connector according to an embodiment of the disclosed technology. And FIGS. 7 and 8 are views showing a bracket of a junction box connector according to an embodiment of the present invention.

The photovoltaic generation monitoring system according to an embodiment of the present invention includes a junction box connector 300 that is connected to a junction box 500 of a photovoltaic module to monitor photovoltaic power generation.

4 and 5, the junction box connector 300 is directly connected to the '+' '- lines 351 and 352 of the junction box 500. The junction box connector 300 will be described in detail with reference to the drawings.

The junction box connector 300 is connected to the '+' line 351 of the junction box 500 and the '-' line 352 of the junction box 500. The junction box connector 300 includes a branching line 353 branched from the '+' line 351, a '' self-power connection blade 340 electrically connecting the '+' line 351 and the branch line 353 A junction box connector bracket 330 for housing the '+' line 351 and the branch line 353 and a junction box connector bracket 330 for holding the 'A' power connection blade 340 of the '+' A first magnetic sensor 310 installed on the '+' line 351, a branch line 354 branched from the '-' line 352, a power source of the '-' line 352 and the branch line 354 A junction box connector bracket 330 housing the line 352 and the branch line 354, a '' 'line' '' of the '-' line 352, Connected to the second magnetic sensor 311, the first magnetic sensor 310, and the second magnetic sensor 311 provided on the '-' line 352 before the power connection blade 340 is disconnected, And receives the detection information and is connected to the branch line 354, Power receiving circuit includes a substrate 320.

The 'A' power supply connection blade 340 is connected to the cable constituting the line 351 and 352 in the 'A' shape so that the electrical connection can be established without removing the cover of the cable. The 'A' power connection blade 340 electrically connects the branch lines 353 and 354 connected to the line 351 and 352 at 90 ° in a '' shape. The power connection blade 340 is coupled with the lines 351 and 352 so as to be disposed at a position beyond the branch point in the current direction. That is, since the power connection blade 340 has the 'A' shape, the '+' line 351 in which the current flows into the junction box 500 is connected to the branch line 353 via the line 351 ' The power connection blade 340 is connected. The power connection blade 340 is connected to the line 352 'after the branch point, which is connected to the branch line 354 in the current direction, in the' - 'line 351 from which current flows in the junction box 500.

The first magnetic sensor 310 is installed at a position 351 before the '+' line 351 which is a line to enter the junction box is connected to the branch line 353 and the second magnetic sensor 311 is installed at the junction box And a line 352, which is an outgoing line, is installed at a position 352 before being connected to the branch line 354. The magnetic sensors 310 and 311 are installed on a line to which the power supply connection blade 340 is not connected, thereby eliminating the signal drop phenomenon caused by the formation of the power supply line, thereby improving the sensitivity and reliability of the magnetic sensors 310 and 311.

As shown in FIG. 6, the branch lines 353 and 354 are respectively connected to the circuit board 320 to apply voltage information. The first magnetic sensor 310 and the second magnetic sensor 311 are connected to the circuit board 320 to apply current information on the line. The circuit board 320 includes a magnetic sensor module, converts the signal from the magnetic sensor into a signal that can be amplified and read, and transmits the signal to the cpu module. Since the magnetic sensor module receives the current information from the first magnetic sensor 310 installed on the line entering the junction box 500 and the second magnetic sensor 311 installed on the outgoing line to add measurement points, Corrected. The current value input to the junction box 500 and the current value of the line passing through the junction box 500 are received, respectively, so that the power generation amount can be calculated. The circuit board 320 includes a voltage measurement module and is connected to the branch lines 353 and 354 to digitize the voltage information from the junction box 500 and transmit the voltage information to the plc through the transmission module. The DC power from the branch lines 353 and 354 connected to the voltage measuring module is transmitted to the power source of the circuit board 320 so that the power required for the measurement is supplied. The intelligent solar photovoltaic power generation monitoring apparatus according to an embodiment of the present invention measures input / output current and voltage for each junction box by a magnetic sensor so as to read fault information and to allow the operator to know state information.

7 and 8 show a 'T' shaped bracket 330 housing the lines 351 and 352, the branch lines 353 and 354, and the power connection blade 340 connecting them. As shown, the 'T' bracket 330 includes a groove 351 on which a cable can be seated to house a line 351 and a branch line 353 perpendicularly connected to the line 351. And the 'A' power supply connection blade 340 is connected to one side of the line 351 around the branch point. Reference numeral 331 denotes a cover for covering the bracket 330.

An intelligent solar power generation system including the junction box connector 300 constructed as above will be described with reference to Figs. 1 to 3. Fig.

1 is a block diagram of an intelligent solar power generation system using a magnetic sensor according to an embodiment of the disclosed technology. Referring to FIG. 1, an intelligent solar power generation system using a magnetic sensor includes a plurality of magnetic sensors 110 disposed on a plurality of lines to sense a magnetic field generated in a line, A control unit 120 for measuring the current sensitivity of each solar power generation module and determining whether each of the solar power generation modules is faulty, a database 130 for recording a power generation amount for each solar power generation module by time, A simple PLC-based server for extracting first data including information according to the failure and second data according to the time-scale generation amount in the database, and transmitting information on the solar power generation amount to the administrator terminal in relation to the solar radiation amount 140).

The plurality of magnetic sensors 110 are disposed on each of the plurality of lines of the solar power generation system. Generally, a solar power generation system performs solar power generation using a plurality of solar cells.

In one embodiment, the photovoltaic power generation system can perform solar power generation by disposing a plurality of solar cells on a single large-sized solar panel or by disposing them separately. The former is a general type of photovoltaic power generation module, and the latter is a photovoltaic power generation module in which the angle of the solar panel is differentiated according to the amount and angle of irradiation of the sunlight according to the time zone.

Meanwhile, the photovoltaic power generation module converts the collected sunlight into DC electricity, converts the solar energy into AC electricity once, or transmits it to an area where electric power is to be supplied through the system.

The photovoltaic power generation system described above is attracting attention because it can easily receive electric energy using sunlight, which is clean energy, but it also has some disadvantages. Mostly, due to the structure depending on the amount of solar radiation, there is a problem that power generation efficiency and output become unstable unless sunlight is supplied smoothly.

In view of such problems, conventional intelligent photovoltaic power generation systems have no way of coping with environmental changes such as the weather. Therefore, even when such a case is not included, foreign matter such as leaves or snow covers the solar cell, A water sprinkler or a unit capable of cleaning is disposed separately.

In this case, however, it may be inefficient in terms of maintenance. For example, a unit may be damaged due to a natural disaster such as a typhoon. Accordingly, in the disclosed technology, the PV module is prevented from operating abnormally due to a natural environment or an artificial foreign matter, and the PV system is always monitored through the manager terminal to determine whether the system is operating normally.

On the other hand, the plurality of magnetic sensors 110 represent the magnetic sensors 310 and 311 included in the junction box connector 300 described above. The magnetic sensor 110 senses a magnetic field formed on the input / output line of the junction box 500. It is possible to directly detect the voltage and current of the photovoltaic module. However, if the voltage and current are directly sensed, the detection result may be inaccurate due to the influence of the photovoltaic module, Use a magnetic sensor so as not to be affected by the detection result.

Since the magnetic sensor 110 is disposed in the junction box connector 300 connected to the junction box, the voltage and current of the photovoltaic module are not affected by the voltage and current of the photovoltaic module, 352 in the junction box connector 300 so as to accurately judge whether they belong to the category or not.

The use of the magnetic sensor 110 can detect the electromagnetic field generated by the current flowing in the conductor, so that it is possible to determine the operation state of the operation of the solar module based on the intensity of the electromagnetic field.

Meanwhile, the magnetic sensor 110 is disposed on each of the plurality of lines. That is, in order to detect the occurrence of an abnormality in any one of the photovoltaic power generation modules or the solar cells in the photovoltaic power generation system that performs the photovoltaic power generation using a plurality of photovoltaic power generation modules, .

The controller 120 receives information sensed by the plurality of magnetic sensors 110 and measures the current sensitivity of each solar power generation module. Then, based on the current sensitivity, it is determined whether or not each of the photovoltaic modules is faulty.

The controller 120 receives the magnetic field sensing information from the plurality of magnetic sensors 110. The current sensitivity of the photovoltaic module is measured based on the received magnetic field detection information. The current sensitivity can be calculated on the basis of data previously input through the PLC.

Meanwhile, the controller 120 senses the mismatch of the photovoltaic power generation module and bypasses the current of the photovoltaic power generation module as the mismatch is detected.

As mentioned above, even an intelligent solar power generation system can not overcome the solar radiation itself due to changes in the natural environment. However, the disclosed technology can reduce the solar power generation efficiency, which may be caused by natural environment or artificial factors, It is possible to overcome sufficiently from the side.

However, since it is not provided with a separate device for automatically removing foreign matter, it is possible to prevent a certain solar PV module, which is covered with clouds or covered with foreign matter, from operating in some inefficient state or malfunction different from the original intention . In one embodiment, mismatching occurs in any one of the plurality of solar power generation modules due to clouds or foreign substances, so that the solar power generation modules can operate as a load.

FIG. 3 below shows a case where inconsistency occurs in the disclosed technique. Referring to FIG. 3, it is confirmed that at least one photovoltaic module is misaligned in performing photovoltaic power generation using a plurality of photovoltaic modules, the corresponding photovoltaic module is bypassed.

In an ideal environment, it is preferable to perform solar power generation only in an environment where the efficiency of the solar power generation is not hindered by other artificial factors except for the natural environment, but there are many cases in which the actual solar power generation is not performed . For example, even if a solar cell is mounted on a roof to perform solar power generation, there may be a situation where a solar cell disposed on one side of a roof due to a high-rise building is covered with a shadow.

Therefore, a bypass diode is included to bypass the current of the photovoltaic module in order to cope with such a situation. In case of emergency, the bypass diode is used to bypass the current to prevent a malfunction of the solar cell module.

According to the junction box connector, the magnetic sensors 310 and 311 are disposed on the basis of the current direction, and the signal received from the magnetic sensors 310 and 311 is transmitted to the controller 120 through the circuit board 320. Naturally, the signal means a signal that can be transmitted and received through the PLC.

The database 130 records the generation amount of each solar power generation module by time slot. The intelligent solar power generation system according to the disclosed technology includes a predetermined database 130. The database 130 may use a separate storage medium, but preferably records the power generation amount of the solar power generation module by time using a PLC.

Meanwhile, the database 130 records the power generation amount of the photovoltaic generation module according to the time period or period inputted through the PLC. For example, the generation amount of the photovoltaic generation module can be stored every hour and hour.

On the other hand, the PLC-based simple server 140 extracts first data including information according to the failure in the controller 120 and second data according to the time-series power generation amount in the database 130 And transmits information on the amount of photovoltaic power generation to the manager terminal.

The controller 120 measures the current sensitivity of the solar cell module based on the information received from the magnetic sensor 110. FIG. Accordingly, the control unit 120 can determine whether the PV module is faulty based on the measured current sensitivity, and thus, this information is referred to as first data.

On the other hand, the database 130 records the power generation amount of the photovoltaic module according to the time zone, and transmits the information to the PLC-based simple server 140 as the second data.

The PLC-based simple server 140 receives the first data and the second data, and generates information on the amount of solar power generation based on the solar radiation amount of the solar power generation module based on the two data.

In one embodiment, the manager inputs information on the appropriate generation amount according to the solar radiation amount in advance to the PLC-based simple server 140. Based on the first data and the second data to the PLC-based simple server 140, the degree of the solar power generation amount is compared with the solar radiation amount, and it is compared with the input optimum generation amount to determine whether the present solar power generation module is operating normally It is possible to do.

Meanwhile, the administrator terminal includes a smart terminal. The manager can confirm the information on the solar power generation amount with respect to the solar radiation amount through the touch screen mounted on the smart terminal. The control signal can be sent to the PLC-based simple server 140 using the touch screen. In this case, a dedicated application capable of communicating and transmitting / receiving data with the PLC-based simple server 140 may be used. Therefore, the administrator can understand the state of the intelligent photovoltaic power generation system through the administrator terminal and can promptly cope with a problem.

FIG. 2 is a flowchart of an intelligent solar power generation monitoring method using a magnetic sensor according to an embodiment of the disclosed technology. Referring to FIG. 2, an intelligent solar power generation monitoring method using a magnetic sensor includes a step 210 of sensing a magnetic field generated in a line by arranging a plurality of magnetic sensors on each of a plurality of lines, (220) of measuring the current sensitivity of each solar power generation module by receiving the information, determining whether each of the solar power generation modules is faulty (220), recording the generation amount of each solar power generation module The simple data server 230 and the PLC-based simple server extract first data including information according to the failure and second data according to the time-scale generation amount, and transmit information on the solar power generation amount to the administrator terminal (Step 240).

In step 210, a plurality of magnetic sensors are disposed on each of the plurality of lines to sense a magnetic field generated in the line. The plurality of magnetic sensors are disposed in a line of a junction box connected to a solar cell. And detects a magnetic field formed on the line.

Although it is possible to directly detect the voltage and the current by connecting other kinds of sensors to the PV module, if the voltage and current are directly sensed, the detection result may be inaccurate due to the influence from the PV module, A magnetic sensor is used so as not to be affected by the detection result from the solar cell module.

Meanwhile, in step 210, the magnetic sensor may be disposed in the junction box connector 300 connected to the junction box 500. That is, the junction box connector 300 is formed on the lines 351 and 352 so as to accurately determine whether the voltage and the current of the photovoltaic module are in a normal category without being affected by voltage and current of the photovoltaic module. The magnetic field is detected.

When such a magnetic sensor is used, it is possible to determine the operation state of the operation of the solar cell module based on the strength of the electromagnetic field, since the electric current can detect the electromagnetic field generated as the electric current flows through the conductor.

On the other hand, the magnetic sensors are respectively disposed in a plurality of lines. That is, the magnetic sensor is disposed for each line in order to detect the occurrence of an abnormality in any one of the solar power generation modules or the solar cells in the solar power generation system that performs solar power generation using a plurality of solar power generation modules.

In step 220, the controller receives the information sensed in step 210 from the magnetic sensor, and measures the current sensitivity of each solar power generation module. Then, based on the current sensitivity, it is determined whether or not each of the photovoltaic modules is faulty.

The control unit receives the magnetic field sensing information from the plurality of magnetic sensors. The current sensitivity of the photovoltaic module is measured based on the received magnetic field detection information. The current sensitivity can be calculated on the basis of data previously input through the PLC.

Meanwhile, the controller detects the mismatch of the photovoltaic power generation module, and bypasses the current of the photovoltaic power generation module when the mismatch is detected. As mentioned above, even an intelligent solar power generation system can not overcome the solar radiation itself due to changes in the natural environment. However, the disclosed technology can reduce the solar power generation efficiency, which may be caused by natural environment or artificial factors, It is possible to overcome sufficiently from the side.

However, since it is not provided with a separate device for automatically removing foreign matter, it is possible to prevent a certain solar PV module, which is covered with clouds or covered with foreign matter, from operating in some inefficient state or malfunction different from the original intention . In one embodiment, mismatching occurs in any one of the plurality of solar power generation modules due to clouds or foreign substances, so that the solar power generation modules can operate as a load.

As described above with reference to FIG. 3, since the incompatibility occurs, the current of the specific photovoltaic module is bypassed, and it is possible to prevent the malfunction or the solar power generation efficiency from being hindered.

On the other hand, the junction box 500 includes a bypass diode for bypassing the current of the photovoltaic module in order to cope with this situation. In case of emergency, the bypass diode is used to bypass the current to prevent a malfunction of the solar cell module.

The control unit 120 receives the measurement signal from the junction box connector 300. The junction box connectors 300 are connected to opposite ends of the junction box 500 in opposite directions. 4, a magnetic sensor is disposed on the basis of the current direction, and a signal received from the magnetic sensor can be transmitted to the controller through the circuit board. Naturally, the signal means a signal that can be transmitted and received through the PLC.

Meanwhile, the junction box connectors are connected to opposite ends of the junction box in directions opposite to each other. As shown in FIG. 5, the power connection blade is formed in the opposite direction to prevent the signal drop phenomenon. According to this structure, it is possible to prevent a signal dropping phenomenon on the power supply line, thereby preventing noise from occurring in the signal. The junction box connector measures a voltage output from both ends of the junction box and transmits the measured voltage to the controller.

In step 230, the database records the generation amount of each solar power generation module by time slot. The intelligent solar power generation system according to the disclosed technique includes a predetermined database. The database may use a separate storage medium, but it preferably records the amount of power generated by the solar power generation module by time, using a PLC.

On the other hand, the database records the power generation amount of the photovoltaic generation module according to the time period or cycle inputted through the PLC. For example, the generation amount of the photovoltaic generation module can be stored every hour and hour.

In step 240, the simple server based on the PLC transmits first data including information on whether the PV module obtained through the control unit is broken down in step 220, and first data including information on the time of the PV module Extracts the second data according to the amount of generation of electricity by each household, and transmits information on the solar power generation amount to the administrator terminal in relation to the irradiation amount.

The control unit measures the current sensitivity of the solar module based on the information received from the magnetic sensor. Therefore, the control unit can determine whether the photovoltaic module is faulty based on the measured current sensitivity, and this information is referred to as first data.

Meanwhile, the database records the power generation amount of the photovoltaic module in each time slot, and transmits the information to the simple server based on the PLC as the second data.

In step 240, the PLC-based simple server receives the first data and the second data, and generates information on the solar power generation amount based on the solar radiation amount of the solar power generation module based on the two data.

In one embodiment, the manager inputs information on the appropriate generation amount according to the solar radiation amount in advance to the PLC-based simple server. Then, it is possible to determine the degree of solar power generation relative to solar radiation using the first data and the second data to the PLC-based simple server, and compare the solar power generation amount with the input optimum power generation amount to determine whether the present solar power generation module is operating normally Do.

Meanwhile, the administrator terminal includes a smart terminal. The manager can confirm the information on the solar power generation amount with respect to the solar radiation amount through the touch screen mounted on the smart terminal. Conversely, a control signal can be sent to a simple PLC-based server using the touch screen. In this case, a dedicated application capable of communicating and transmitting / receiving data with the simple server based on the PLC can be used.

Therefore, the photovoltaic power generation system intelligently detects the operation state of the plurality of photovoltaic power generation modules, bypasses the current of the specific photovoltaic module in which the abnormality is detected, thereby increasing the photovoltaic power generation efficiency and hindering the power generation efficiency And provides administrators with the advantage of being able to remotely monitor the system.

Although the intelligent photovoltaic generation system and method using the magnetic sensor according to an embodiment of the disclosed technology has been described with reference to the embodiments shown in the drawings for the sake of understanding, it is merely an example, It will be understood that various modifications and equivalent arrangements may be made therein without departing from the scope of the invention. Accordingly, the true scope of protection of the disclosed technology should be determined by the appended claims.

110, 110, and 311: magnetic sensor 120:
130: Database 140: PLC-based simple server
210: Magnetic field detection 220: Current sensitivity measurement
230: Record of power generation by time zone 240: Information transmission about power generation
300: junction box connector 320: circuit board
330: Junction box connector bracket 340: 'A'
351,352: Line 353,354: Branch line

Claims (4)

A system for monitoring a power generation state of a solar power generation module connected to a junction box installed in each of a plurality of solar power generation modules,
A branch line connected to the input / output line of the junction box, respectively; An 'A' power connection blade having one side connected to a line passing a branch point at which the branch line meets the input / output line with respect to a current direction of the line, the input / output line being electrically connected to the branch line; A magnetic sensor provided on the input / output line before the branch point with respect to the current direction to sense a magnetic field corresponding to the current of the line; A plurality of junction box connectors each connected to the magnetic sensor to receive sensing information and transmit the sensed information;
A control unit for receiving sensed information from the plurality of junction box connectors to measure current sensitivity of each solar power generation module and determining whether each solar power generation module is faulty;
A database for recording power generation amount by time of each of the solar power generation modules; And
Based on the first data including the information on the failure and the second data on the basis of the time-series generated amount in the database, and transmitting the information about the solar power generation amount to the administrator terminal A simple server,
Wherein the branch line applies DC power applied from the line to the circuit board,
Wherein the circuit board is driven using the DC power source and transmits voltage information of the line to the control unit according to the DC power,
Wherein the control unit uses a magnetic sensor for determining the power generation status of the solar power generation module using the voltage information applied from the circuit board. The apparatus of claim 1,
An intelligent solar photovoltaic power generation monitoring system using a magnetic sensor that detects mismatching of the photovoltaic power generation module and bypass current of the photovoltaic power generation module when the mismatch is detected. delete delete
KR1020160022644A 2015-07-07 2016-02-25 System for intelligent solar monitoring using magnetic sensor KR101630449B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020150096652 2015-07-07
KR20150096652 2015-07-07

Publications (1)

Publication Number Publication Date
KR101630449B1 true KR101630449B1 (en) 2016-06-14

Family

ID=56192067

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020160022644A KR101630449B1 (en) 2015-07-07 2016-02-25 System for intelligent solar monitoring using magnetic sensor

Country Status (1)

Country Link
KR (1) KR101630449B1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101012348B1 (en) * 2010-11-01 2011-02-09 박기주 Apparatus for monitoring and controling circuit of solar power generation system
KR101086005B1 (en) * 2011-08-29 2011-11-22 박일순 Photovoltaic monitoring system
KR20120126079A (en) * 2010-01-12 2012-11-20 언드러스 포주거이 System for managing and controlling photovoltaic panels
KR101360401B1 (en) 2012-10-04 2014-02-24 파워포인트 주식회사 Photovoltaic power generation
KR101409781B1 (en) * 2014-02-14 2014-06-25 주식회사 텐코리아 Integrated monitoring system for photovoltaics facility

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120126079A (en) * 2010-01-12 2012-11-20 언드러스 포주거이 System for managing and controlling photovoltaic panels
KR101012348B1 (en) * 2010-11-01 2011-02-09 박기주 Apparatus for monitoring and controling circuit of solar power generation system
KR101086005B1 (en) * 2011-08-29 2011-11-22 박일순 Photovoltaic monitoring system
KR101360401B1 (en) 2012-10-04 2014-02-24 파워포인트 주식회사 Photovoltaic power generation
KR101409781B1 (en) * 2014-02-14 2014-06-25 주식회사 텐코리아 Integrated monitoring system for photovoltaics facility

Similar Documents

Publication Publication Date Title
Livera et al. Recent advances in failure diagnosis techniques based on performance data analysis for grid-connected photovoltaic systems
US11073543B2 (en) Monitoring of distributed power harvesting systems using DC power sources
Madeti et al. A comprehensive study on different types of faults and detection techniques for solar photovoltaic system
US8446042B2 (en) Photovoltaic array systems, methods, and devices with improved diagnostics and monitoring
AU2016202891B2 (en) Automatic generation and analysis of solar cell IV curves
US9520826B2 (en) Solar cell module efficacy monitoring system and monitoring method therefor
KR101295529B1 (en) Remote monitoring system for solar cell problem
US8744791B1 (en) Automatic generation and analysis of solar cell IV curves
KR101390405B1 (en) Monitoring and control system for photovoltaic power generation device management system
WO2012026449A1 (en) Earth-fault detection device, collector box using earth-fault detection device, and photovoltaic power generation device using collector box
EP2089913A2 (en) Monitoring of distributed power harvesting systems using dc power sources
Madeti et al. Online modular level fault detection algorithm for grid-tied and off-grid PV systems
KR20190038091A (en) Method for diagnosing fault of photovoltaic system and apparatus thereof
KR101297078B1 (en) Photovoltaic monitoring device that can be default diagnosis each module and method of diagnosing Photovoltaic power generator
CN101958665A (en) Monitoring method of junction box for photovoltaic module
KR101870300B1 (en) Solar power system and diagnosis method of solar power system failure
US10587222B2 (en) Method of operating photovoltaic generators, corresponding circuit, device and system
Andò et al. SENTINELLA: A WSN for a smart monitoring of PV systems at module level
KR101630449B1 (en) System for intelligent solar monitoring using magnetic sensor
KR102582747B1 (en) Total management system for solar power generation apparatus
KR100984678B1 (en) Error detectable solar cell generating system
KR101354190B1 (en) Photovoltaic power system
EP3872985B1 (en) Early detection of potential induced degradation in photovoltaic systems
CN202067689U (en) Physical on-off state detection device for electricity protection return circuit
KR20190076398A (en) Deterioration type diagnosis system and method of solar cell module for stable power energy production

Legal Events

Date Code Title Description
E701 Decision to grant or registration of patent right
GRNT Written decision to grant