KR102281897B1 - DAQ and Independent solar remote control system through clustering-based power measurement using DAQ - Google Patents

Abstract

The present invention relates to a stand-alone solar power remote operating system through clustering-based power measurement using DAQ and DAQ, and more specifically, by measuring solar power, battery, or generator to predict failure/abnormal occurrence without grid connection. It relates to a standalone solar power remote operating system through clustering-based power measurement using possible DAQ,
In an independent solar remote operating system through clustering-based power measurement using DAQ, a DAQ board that receives and stores information from the solar cell, inverter and battery, and a generator that self-generates power under the control of the DAQ Slave board to check the characteristics of the system; a master board that checks the corresponding data of the DAQ board of the slave board when an error occurs, in order to monitor only the factors that can be diagnosed among the solar cells, batteries, generators, and inverters that can be checked on the slave board; Includes; energy monitoring server (energy monitoring server) for monitoring the master board.

Description

DAQ and Independent solar remote control system through clustering-based power measurement using DAQ}

The present invention relates to a standalone solar power remote operating system through clustering-based power measurement using DAQ and DAQ, and more particularly, by measuring sunlight, battery, or generator to predict failure/error occurrence without grid connection. It relates to a standalone solar power remote operating system through clustering-based power measurement using possible DAQ.

Resources that can be used as energy sources on Earth include limited natural energy sources that can be obtained from the underground and the sea, infinite energy sources that can be used indefinitely such as wind, hydraulic power, and solar power, and large energy sources that are easier to process and control. In general, it is broadly classified into alternative energy resources used as

Such an infinite energy source does not require a separate cost to secure energy, but generally requires an initial facility cost. In particular, it is in the spotlight as a clean energy source because it does not produce pollutants such as carbon gas.

In a general photovoltaic device, when sunlight shines on a solar cell in which a P-type semiconductor and an N-type semiconductor are bonded, holes and electrons are generated in the solar cell by the energy of the sunlight. The electrons are gathered toward the P-type semiconductor and the electrons are gathered toward the N-type semiconductor, and when a potential difference occurs, a current flows.

In addition, the grid power is the power of a power company that commercially produces a very stable level of electricity and supplies it constantly at all times.

That is, the self-generation system using solar power, wind power, etc. can replace the grid power supply in case an emergency situation such as no sunlight or no wind continues.

The grid-connected system is a system that preferentially consumes electricity generated by the self-generation system and selectively supplies and consumes electricity from a commercial power company in case of an emergency in which the self-generation system cannot supply electricity.

However, when the grid-connected system does not receive external grid power, there may be a problem in the reliability of the system.

Such solar PV power generation is a reliable technology that has been commercialized and has long-term growth potential in almost all regions of the world.

It is estimated that PV power will generate 11% of the world's electricity by 2050 and reduce carbon dioxide emissions by 2.3 Gt per year.

In order to achieve this goal, it is necessary to combine policy efforts that provide a well-balanced and strong foundation so that technological development can be achieved optimally, costs can be reduced, and companies' manufacturing capabilities can be improved.

Japanese Patent Laid-Open No. 2012-533105 Japanese Patent Application Laid-Open No. 2014-081921 Korean Patent Publication No. 2016-0075054 US Patent Publication No. 2014-0192568

The present invention has been devised to solve the above problems, and the slave board for collecting detailed information includes the solar cell, a battery that stores power generated from the solar cell, and the performance of the battery is deteriorated or supplied by an external cause. It includes a generator that is additionally operated when the line is shorted, and provides a standalone solar power remote operating system through clustering-based power measurement using DAQ and DAQ that can be remotely controlled by sharing detailed histories with the master board as log data. There is a purpose.

In order to solve the above problems, the present invention provides a solar cell, an inverter that receives and converts power from the solar cell, a battery that stores the power converted from the inverter, a load that consumes the power converted from the inverter, and the solar cell and It is connected next to the inverter and receives and stores the factor that can diagnose faults from the inverter and the battery.

In an independent solar remote operating system through clustering-based power measurement using DAQ, a DAQ board that receives and stores information from the solar cell, inverter and battery, and a generator that self-generates power under the control of the DAQ Slave board to check the characteristics of the system; a master board that checks the corresponding data of the DAQ board of the slave board when an error occurs in order to monitor only the factors that can be diagnosed with a failure among the solar cells, batteries, generators, and inverters that can be checked on the slave board; an energy monitoring server for monitoring the master board; and a control unit for controlling the generator to be charged by supplying it to the battery and operating the generator when the remaining capacity of the battery is lower than the minimum allowable discharge voltage.

It further includes; an individual terminal connected to the energy monitoring server and loaded with an energy monitoring app capable of energy monitoring.

The stand-alone solar remote operating system through clustering-based power measurement using the DAQ is a stand-alone system that includes a solar cell, a battery, a generator, and an inverter, respectively, and even if the power of the system is cut off, it bypasses the battery or generator and continues energy There is no problem in using the load by controlling it so that it can be supplied to the load.

By storing the data generated by the solar cell, battery, generator, and inverter in a microcomputer mounted on an internal PCB, fault diagnosis and fault prediction are possible.
A test point for testing a specific measurement value is included at one side of the master board and the slave board.

It is possible to prepare for the occurrence of an abnormality through the microcomputer.

By attaching an additional ROM to the microcomputer, data storage or backup is possible.

The control unit includes an input unit for receiving an input of the remaining charge amount of the battery; a comparator for comparing the remaining amount of charge of the battery received through the input unit with a default value set in the setting unit; Comprising a driving unit for driving either the battery or the generator according to the result of comparison with a set value based on the received measured remaining charge amount, the power generation amount of the generator, and the required power amount of the load

The present invention made as described above has the effect of being able to take immediate action when an abnormality occurs by periodically collecting the amount of power generation of each photovoltaic module and various types of power generation environment information.

In addition, the present invention can pursue efficiency and automation of energy productivity management by building big data over a long period of time.

1 is a view showing an overall conceptual diagram of an independent solar remote operating system through clustering-based power measurement using DAQ according to an embodiment of the present invention.
2A and 2B are diagrams showing a configuration diagram according to an embodiment of the present invention.
3 is a diagram showing a circuit diagram of a DAQ according to an embodiment of the present invention.
4 to 8 are diagrams showing various DAQ board circuit diagrams according to an embodiment of the present invention.

In order to fully understand the present invention, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. This example is provided to more completely explain the present invention to those of ordinary skill in the art. Accordingly, the shape of elements in the drawings may be exaggerated to emphasize a clearer description. It should be noted that the same members in each drawing are sometimes shown with the same reference numerals. In addition, detailed descriptions of well-known functions and configurations that are determined to unnecessarily obscure the gist of the present invention will be omitted.

The present invention relates to a solar cell (PV device; 10), an inverter (INV; 20) that receives and converts power from the solar cell, a battery (BAT; 25) that stores the power converted from the inverter, and the inverter (20) Includes a load that consumes power converted from

As an embodiment of the present invention, the slave board 3 that collects detailed information from the lowermost side includes the solar cell 10 , the battery 25 that stores power generated from the solar cell, and the performance of the battery 25 . This includes a generator 35 that is operated additionally when the supply line is short-circuited due to this deterioration or an external cause, and can share a detailed history with the master board 2 or the energy monitoring server 1 to be described below.

Therefore, in the present invention, solar-battery-generator control is continuously possible, so reliable and continuous operation is possible without external system connection.

In addition, the present invention further includes a DAQ (Data acquisition) board 30 that is additionally connected after the solar cell 10 and the inverter 20 to receive and store energy information from the inverter 20 and the battery 25 . include

That is, in the present invention, fault diagnosis and failure prediction of the solar cell 10, inverter 20, battery 25, etc. are possible in advance after receiving, storing, and monitoring a factor capable of fault diagnosis from the DAQ board 30. Accordingly, it is possible to provide an independent solar power remote operating system through clustering-based power measurement using continuous and reliable DAQ with an additional power supply bypass command of the generator 35 .

As shown in FIGS. 1 and 2A , the present invention provides a master board 2 and the master board 3 that are largely installed in a plurality of places, and a master board 2 that integrates and manages the plurality of slave boards 3 . Consists of an energy monitoring server (1) managing the board (2).

Therefore, the energy monitoring server 1 collects energy information such as solar cells 10 in different countries or regions to monitor the plurality of slave boards 3 and the master board 2 that manages them, and the energy monitoring server 1 ) filter and monitor the factors for fault diagnosis, and when an abnormality occurs, the state of the corresponding slave board 3 is precisely observed to control the charging or discharging operation of the battery 25, and when a fault is diagnosed, a new additional device ( Example: The operation of the regulator) can be commanded.

By giving each identifiable IP address to the plurality of slave boards 3 and the master board 2 that manages them, a specific slave board 3 or master board 2 can be identified in case of failure.

To this end, the present invention commands the additional operation of the generator 35 according to the characteristics of the solar cell 10 or the battery 25, including the generator 35 that generates power by itself under the control of the DAQ board 30. In case of failure by collecting information of a plurality of slave boards, the server (1) controls the other master board (2) or the slave board (3) through the master board (2) and the battery (25) or generator ( 35) and can be controlled so that energy can be continuously supplied to the load.

In order to monitor only the factors that can be diagnosed among the solar cells (PV device), the battery (BAT), the generator (gendarme5), and the inverter (INV) that can be checked in the slave board 3, when an error occurs, the a master board that checks the data (Master Board; 2); It may further include an energy monitoring APP (energy monitoring APP) for monitoring the master board (2).

At this time, an individual terminal connected to the energy monitoring server 1 and loaded with an energy monitoring app capable of energy monitoring is used.

In addition, as factors capable of fault diagnosis, voltage/current/power/impedance change output from the slave board (3), daily accumulated power, maximum voltage/current, minimum voltage/current, average voltage, standard deviation, maximum voltage/current slope , minimum voltage/current slope, minute fluctuations per hour of voltage/voltage output, overvoltage/undervoltage value and accumulated time, overcurrent/low current value and accumulated time, number of deviations from permissible upper and lower limit standard deviations, etc.

On the other hand, the slave board 3 according to the present invention generally supplies power to the load through the solar cell 10 and the battery 25 that stores the energy generated in accordance therewith, but when a failure diagnosis and failure prediction possibility occurs It is possible to continue the reliable operation of the system through the generator 35 or the like.

That is, as a stand-alone DAQ that charges the electricity generated by the solar cell 10 to the battery 25 and supplies it to the load under the control of the energy monitoring server 1, the electricity generated by the solar cell 10 is transferred to the battery 25 is supplied and charged, and when the remaining capacity of the battery 25 is lower than the minimum allowable discharge voltage, the generator 35 is started to operate.

Therefore, the stand-alone solar remote operating system through clustering-based power measurement using the DAQ system uses the solar cell 10, the battery 25, the generator 35, and the inverter 20 as an independent system that does not receive external power, respectively. Make sure that there is no problem in the use of the load even if the power supply is cut off.

On the other hand, as another embodiment of the present invention, the data generated by the solar cell 10 , the battery 25 , the generator 35 , and the inverter 20 is mounted on the internal PCB of the slave board 3 by a microcomputer (Micom). ), and by attaching an additional ROM to the microcomputer, large-capacity data can be stored for a long time, and backup is also possible.

At this time, information can be periodically collected through the microcomputer to take immediate action when an abnormality occurs.

Hereinafter, a method of operating an independent solar remote operating system through clustering-based power measurement using DAQ for the implementation of the present invention will be described with reference to FIG. 2B.

First, the manager loads the energy monitoring app through an individual terminal and accesses the energy monitoring server 1 .

In addition, the manager inputs the operating state value of the solar cell 10 , the battery 25 , the generator 35 , and the inverter 20 through the slave board 3 through the individual terminal or a factor capable of fault diagnosis into the input unit 31 ), the comparison and monitoring are performed through the comparator 33 , etc., and the operation of the battery 25 or the generator 35 can be controlled through the driving unit 34 according to the monitoring result.

At this time, the operating state value compared through the comparison unit 33 or a basic set value of a factor capable of fault diagnosis is input in advance through the setting unit 32 .

That is, the control unit 36 receives the remaining charge amount of the battery 25 and the like through the input unit 31 and compares it through the comparison unit 33 , and the received measured remaining charge amount, the power generation amount of the generator 35 and the load Controls so that one of the battery 25 or the generator 35 is driven through the driving unit 34 by comparing it with a set value based on the required amount of power.

For example, the control unit 36 supplies and charges the battery 25 , and when the remaining capacity of the battery 25 is lower than the minimum allowable discharge voltage, the generator 35 starts to operate.

In addition, the manager considers whether the load is operating, the amount of power required by the load, and the amount of power produced by the stand-alone generator, and changes in voltage/current/power/impedance output from the solar cell 10, etc., daily accumulated power, maximum voltage/current, and minimum voltage. /current, average voltage, standard deviation, maximum voltage/current slope, minimum voltage/current slope, minute fluctuations of voltage/voltage output per hour, overvoltage/undervoltage value and accumulated time, overcurrent/low current value and accumulated time as log data By accumulating and comparing measurements, further operation of the battery 25 or generator 35 can be selected.

Therefore, according to the present invention, it is possible to monitor power production such as the solar cell 10 at any time, to accumulate data, and to predict whether an abnormality occurs or not.

As shown in FIG. 3, it consists of input/output units (A, A'), an external connection unit (D), a regulator (F) for outputting a specific voltage, a plurality of CKSRs 50, 25(B, B'), and the like, and the CKSR 50 and 25 (B, B') are current sensors that sense the amount of current of the internal components of the plurality of slave boards 3 and transmit it to the DAQ 30 .

A test point for testing a specific measurement value at one side of the master board 2 and the slave board 3; may be further included.

For example, it is possible to test solar radiation, temperature, and humidity using the DAQ board's own sensor.

In addition, it is possible to remotely control a battery or a generator through the energy monitoring server 1 with a PC or an app.

Hereinafter, the circuit constituting the DAQ according to the present invention will be described in detail.

4 is a GPS transceiver (SP3232EEY) that generates location information for predicting failure/predicting whether an abnormality occurs according to an embodiment of the present invention is connected through a serial socket (DSUB-9), and STM32F405RG (CPU) of FIG. 5 acts as a control unit and a buzzer is connected.

6 shows a non-volatile memory (EEPROM) that can store power and data and a CAN (SN65HVD235) serial communication interface for external communication.

7 shows an Ethernet-to-serial converter module (ECM5200), RS-232 Transceivers (SP3232EEY), and a USB chip (CP2102) for external communication.

8 shows a voltage sensing opto-isolated amplifier (ACPL-C87) included in the battery circuit.

1: Server
2: master board
3: Slave board
10: solar cell
20: inverter
25 : battery
35 : generator

Claims (6)

solar cells;
an inverter for receiving and converting power from the solar cell;
a battery for storing power converted from the inverter;
a load consuming the power converted from the inverter;
In an independent solar remote operating system through clustering-based power measurement using DAQ including a DAQ board that receives and stores a factor capable of fault diagnosis from the inverter and the battery,
a DAQ board for receiving and storing information from the solar cell, the inverter, and the battery;
a master board that checks the corresponding data of the DAQ board of the slave board when an error occurs, in order to monitor only the factors that can be diagnosed among the solar cells, batteries, generators, and inverters that can be checked on the slave board;
an energy monitoring server for monitoring the master board;
a control unit for supplying and charging the battery and controlling the generator to operate when the remaining capacity of the battery is lower than the minimum allowable discharge voltage;
The control unit may include: an input unit for receiving an input of the remaining amount of charge of the battery; a comparator for comparing the remaining charge amount of the battery received through the input unit with a default value set in the setting unit; Comprising a driving unit that compares with a set value based on the received measured remaining charge amount, the power generation amount of the generator, and the required power amount of the load, and drives either the battery or the generator according to the result value,
An individual terminal connected to the energy monitoring server and loaded with an energy monitoring app capable of energy monitoring;
By storing the data generated by the solar cell, battery, generator, and inverter in the microcomputer mounted on the internal PCB, fault diagnosis and failure prediction are possible, and storage or backup is possible by attaching an additional ROM to the microcomputer,
The DAQ board consists of an input/output unit (A, A'), an external connection unit (D), a regulator (F) that outputs a specific voltage, a plurality of CKSR 50, 25 (B, B'), etc.,
The CKSR 50, 25 (B, B') is a current sensor, which senses the current amount of internal components of a plurality of slave boards and transmits it to the DAQ,
A standalone solar remote operating system through clustering-based power measurement using DAQ, characterized in that it comprises; a test point for testing a specific measurement value at one side of the master board and the slave board. delete delete The method according to claim 1,
The solar cell, battery, generator, and inverter are each independently operated, and even if the power of the system is cut off, it bypasses the battery or generator to continuously supply energy to the load, so there is no problem in the use of the load. Independent solar power remote operating system through clustering-based power measurement using DAQ. delete delete

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