KR20210067541A - Apparatus for transmitting data of photovoltaic power generator - Google Patents

Abstract

The present invention relates to a device for transmitting data of a solar power generator, which comprises: a power supply unit for supplying power by generating electric energy from sunlight; an illuminance sensor for measuring illuminance; an insolation measuring sensor for measuring the insolation; a rainwater sensor for measuring the amount of rainfall; a communication unit communicating with an inverter of a solar power generator, and transmitting data received from the inverter to an external server or terminal at each predetermined period; and a data transmission period control unit for controlling a data transmission period to the external server or terminal of the communication unit by associating and analyzing one or more of illuminance information measured by the illuminance sensor, insolation information measured by the insolation measuring sensor, and rainfall amount information measured by the rainwater sensor. Accordingly, the device can be more efficiently operated.

Description

A device that transmits data of a photovoltaic device {APPARATUS FOR TRANSMITTING DATA OF PHOTOVOLTAIC POWER GENERATOR}

The present invention relates to a device for transmitting data of a photovoltaic device, and more particularly, by analyzing any one or more information of illuminance, insolation, and precipitation to determine current climate information such as weather and sunset conditions, and to generate photovoltaic power accordingly It relates to a device for transmitting data of a photovoltaic device that appropriately adjusts a data transmission period to an external server or terminal of the device.

Recently, the international community is facing the problems of continuous increase in the world population, unstable oil price, and energy depletion due to limited resources, so interest in new and renewable energy is increasing. Renewable energy refers to energy used by recycling existing fossil fuels or converting renewable energy. Renewable energy includes solar energy, solar thermal energy, wind energy, geothermal energy, hydroelectric energy, hydrothermal energy, marine energy, fuel cell energy, hydrogen energy, waste energy, bioenergy, and coal gasification/liquefaction energy. Unlike fossil fuels, renewable energy is not exhausted because it can be recycled, is environmentally friendly because it emits less pollutants or carbon dioxide, and has the advantages of being universally and widely used because it is relatively evenly distributed on the earth compared to fossil fuels. On the other hand, renewable energy has the disadvantages of being heavily influenced by the natural environment when constructing a power plant, high investment cost in the early stage of development, and low economic feasibility.

Among these new and renewable energies, solar power generation is attracting attention among new and renewable energies, especially since the price of solar modules has decreased and the efficiency has been increased due to the development of solar energy technology to secure economic feasibility. A photovoltaic power generation system includes a photovoltaic power module and an inverter that converts the DC current generated by the photovoltaic module as essential components, and in general, one inverter controls a plurality of photovoltaic modules.

Since the amount of power generation of a photovoltaic system is greatly affected by environmental factors such as weather and time, it is necessary to continuously detect these environmental factors. In addition, the photovoltaic device requires a relatively large area to absorb a large amount of sunlight. Therefore, the photovoltaic device is often located in a remote location away from a general residential area or the work area of a manager who manages the photovoltaic device. For this reason, a remote terminal unit (RTU) is installed in the photovoltaic system to collect information on the state of the photovoltaic system and transmit it to a remote management server.

The remote terminal unit (RTU) is connected to the inverter of the solar power generation system to perform communication, and the inverter and the remote terminal unit (RTU) may be connected to each other through a specific communication protocol. The Remote Terminal Unit (RTU) converts data received from the inverter into a specific format and transmits it to a server or terminal located remotely. Data reception from the inverter may be performed at a specific period. Of course, if data is received from the inverter every 10 seconds, converted, and transmitted to the management server in a short cycle, for example, the management server receives a lot of information about photovoltaic power generation, so accurate facility operation can be expected. However, in this case, a large amount of cost is inevitably consumed in terms of performance or power supply of the remote terminal unit (RTU), and data received from the inverter every short period is highly likely to be redundant, so it is not efficient.

In addition, since the power of the remote terminal device (RTU) also depends on solar power generation, a short period of data transmission after sunset or on a rainy or cloudy day when there is no expectation of sufficient solar power generation causes a great burden and waste in the operation of the device. will cause Accordingly, the development of a technology for properly controlling the data transmission period of the remote terminal device (RTU) in real time by identifying external environmental factors is required.

Korean Patent No. 1568667 Announcement on November 13, 2015

The present invention has been devised to improve the prior art as described above, and analyzes any one or more information of illuminance, insolation, and precipitation to determine current climate information such as weather and sunset conditions, and accordingly an external server of the solar power generation device B. An object of the present invention is to provide a device for transmitting data of a photovoltaic device that appropriately adjusts the data transmission period to a terminal.

In order to achieve the above object and solve the problems of the prior art, an apparatus for transmitting data of a photovoltaic device of the present invention includes a power supply unit for supplying power by generating electric energy from sunlight; an illuminance sensor for measuring illuminance; Insolation measuring sensor for measuring the amount of insolation; Rainwater sensor to measure precipitation; a communication unit connected to the inverter of the photovoltaic device in communication and transmitting data received from the inverter to an external server or terminal at regular intervals; And by analyzing any one or more of the illuminance information measured by the illuminance sensor, the insolation information measured by the insolation measuring sensor, and the precipitation information measured by the rainwater sensor, the communication unit to the external server or terminal and a data transmission cycle controller for controlling the data transmission cycle.

In addition, in the device for transmitting data of the photovoltaic device of the present invention, when the illuminance measured by the illuminance sensor is less than 10% of the maximum value, and the insolation measured by the insolation measuring sensor is less than 10% of the maximum value, the The data transmission period control unit determines that the state is before sunset and controls the data transmission period to about 3 hours.

In addition, in the device for transmitting data of the photovoltaic device of the present invention, when the illuminance measured by the illuminance sensor is between 10% and 30% of the maximum value, the amount of insolation measured by the insolation measuring sensor is 10% of the maximum value to 30%, among the cases in which the precipitation amount is greater than or equal to the predetermined threshold value, if two or more conditions are met, the data transmission period control unit determines that the weather is cloudy and controls the data transmission period to about 1 hour characterized in that

In addition, in the device for transmitting data of the photovoltaic device of the present invention, when the illuminance measured by the illuminance sensor is 30% or more of the maximum value, and the insolation measured by the insolation measuring sensor is 30% or more compared to the maximum value, the The data transmission period controller determines that the weather is sunny and controls the data transmission period to about 10 minutes.

According to the device for transmitting the data of the photovoltaic device of the present invention, after sunset or on a rainy or cloudy day when sufficient solar power generation is not expected, the data transmission period is appropriately adjusted in real time in response to the situation to provide power to the equipment. It is possible to obtain the effect of more efficiently operating equipment that depends on solar power by being remotely located, such as reducing usage.

1 is a block diagram illustrating a configuration of an apparatus for transmitting data of a photovoltaic device according to an embodiment of the present invention.

Since the present invention can have various changes and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. However, this is not intended to limit the present invention to specific embodiments, and it should be understood to include all modifications, equivalents and substitutes included in the spirit and scope of the present invention. In describing each figure, like reference numerals have been used for like elements.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram illustrating a configuration of an apparatus for transmitting data of a photovoltaic device according to an embodiment of the present invention.

A device for transmitting data of a photovoltaic device according to an embodiment of the present invention includes a power supply unit 110 , an illuminance sensor 120 , a solar radiation measurement sensor 130 , a rainwater sensor 140 , a communication unit 150 , The data transmission cycle control unit 160 is included as a configuration.

The power supply unit 110 is implemented as a photovoltaic generator. The power supply unit 110 converts the obtained solar energy into electrical energy and supplies it as power to the device transmitting the data of the solar power generation device. The illuminance sensor 120 measures the illuminance of incident sunlight. The illuminance sensor 120 transmits the measured illuminance information to the data transmission period controller 160 .

The insolation measuring sensor 130 measures the insolation amount of the incident sunlight. Insolation refers to the amount of sunlight reaching the earth's surface through clouds or fog. Solar power generation depends on the amount of insolation, not the temperature. The optimal condition for solar power generation is that the weather with high insolation is maintained for a long time. The insolation measuring sensor 130 may measure insolation in various ways, such as a current insolation value, an average insolation value, and storage for each period. The insolation measuring sensor 130 transmits the measured insolation information to the data transmission period control unit 160 .

The rain water sensor 140 not only detects rain water but also measures the amount of precipitation for a certain time. The rain water sensor 140 transmits the measured precipitation amount information to the data transmission period control unit 160 .

The illuminance sensor 120 , the insolation measuring sensor 130 , and the rain water sensor 140 may be connected to the data transmission period control unit 160 through a wired or wireless communication network. Both sides can be connected to each other through wired communication such as RS485 communication or RS232 communication. In addition, both sides provide short-range communication interfaces such as Bluetooth™, Radio Frequency Identification (RFID), Infrared Data Association (IrDA), UltraWideband (UWB), ZigBee, and Near Field Communication (NFC), and a wireless LAN (WLAN). ), WiFi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access), HSDPA (High Speed Downlink Packet Access), etc. may be

The communication unit 150 is communicatively connected with the inverter 101 of the photovoltaic device, and transmits data received from the inverter 101 to the external server/terminal 102 at regular intervals. The communication unit 150 receives power through the solar power generation of the power supply unit 110 like other components. Communication unit 150 is LTE (Long Term Evolution), WCDMA, CDMA, WLAN (Wireless LAN), WiFi (Wireless Fidelity) Direct, DLNA (Digital Living Network Alliance), Wibro (Wireless broadband), Wimax (World Interoperability for Microwave Access) ), it is possible to transmit data to an external server or terminal 102 through a wireless communication interface such as High Speed Downlink Packet Access (HSDPA). Also, the communication unit 150 may transmit data to an external server or terminal 102 through a wired Internet network.

The data transmission period control unit 160 associates any one or more of the illuminance information measured by the illuminance sensor 120, the insolation information measured by the insolation measuring sensor 130, and the precipitation information measured by the rainwater sensor 140 By analyzing, the data transmission period to the external server or terminal 102 of the communication unit 150 is controlled.

The data transmission period control unit 160 is a state before sunset when the current is near sunset when the illuminance measured by the illuminance sensor 120 is less than 10% of the maximum value, and the insolation measured by the insolation measurement sensor 130 is less than 10% of the maximum It is determined that , and the data transmission period can be controlled to about 3 hours.

The data transmission period control unit 160 is 1, when the illuminance measured by the illuminance sensor 120 is between 10% and 30% of the maximum value, the insolation amount measured by the insolation measurement sensor 130 is between 10% and 30% of the maximum value. Case 2, if the amount of precipitation measured by the rain water sensor 140 is equal to or greater than the selected threshold value 3 is assumed, and if two or more conditions are satisfied among Case 1, Case 2, and Case 3, it is determined that the current weather is in a cloudy state and the data transmission period can be controlled to about 1 hour.

The data transmission cycle control unit 160 determines that the current weather is in a clear state when the illuminance measured by the illuminance sensor 120 is 30% or more of the maximum value, and the insolation measured by the insolation measurement sensor 130 is 30% or more of the maximum value. It can be determined and the data transmission period can be controlled within 10 minutes.

As described above, the data transmission cycle control unit 160 acquires status information about the current weather or sunset using illuminance information, solar radiation information, and precipitation information, and controls the data transmission cycle to be appropriately adjusted accordingly, thereby generating solar power generation power. It is possible to maximize the operating efficiency of data transmission devices that depend on

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or combinations thereof. Implementations may be implemented for processing by, or controlling the operation of, a data processing device, eg, a programmable processor, computer, or number of computers, a computer program product, ie an information carrier, eg, a machine readable It may be embodied as a computer program tangibly embodied in a storage device (computer readable medium) or a radio signal. A computer program, such as the computer program(s) described above, may be written in any form of programming language, including compiled or interpreted languages, as a standalone program or in a module, component, subroutine, or computing environment. It can be deployed in any form including as other units suitable for use in A computer program may be deployed to be processed on one computer or multiple computers at one site or to be distributed across multiple sites and interconnected by a communication network.

Processors suitable for processing a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer. In general, a processor will receive instructions and data from either read-only memory or random access memory or both. Elements of a computer may include at least one processor that executes instructions and one or more memory devices that store instructions and data. In general, a computer may include one or more mass storage devices for storing data, for example magnetic, magneto-optical disks, or optical disks, receiving data from, sending data to, or receiving data therefrom. It may be combined so as to be both sides. Information carriers suitable for embodying computer program instructions and data are, for example, semiconductor memory devices, for example, magnetic media such as hard disks, floppy disks and magnetic tapes, Compact Disk Read Only (CD-ROM). Memory), optical recording media such as DVD (Digital Video Disk), magneto-optical media such as optical disk, ROM (Read Only Memory), RAM (RAM, Random Access Memory), flash memory, EPROM (Erasable Programmable ROM), EEPROM (Electrically Erasable Programmable ROM), and the like. Processors and memories may be supplemented by, or included in, special purpose logic circuitry. In addition, the computer-readable medium may be any available medium that can be accessed by a computer, and may include both computer storage media and transmission media.

As described above, although the present invention has been described with reference to the limited embodiments and drawings, the present invention is not limited to the above embodiments, and those skilled in the art to which the present invention pertains various modifications and variations from these description This is possible.

Therefore, the scope of the present invention should not be limited to the described embodiments, and should be defined by the following claims as well as the claims and equivalents.

101: solar inverter
102: external server / terminal
110: power unit
120: light sensor
130: solar radiation measuring sensor
140: rain water sensor
150: communication department
160: data transmission period control unit

Claims (4)

In the data transmission device for transmitting the data of the solar power generation device to the outside,
a power supply unit for supplying power by generating electric energy from sunlight;
an illuminance sensor for measuring illuminance;
Insolation measuring sensor for measuring the amount of insolation;
Rainwater sensor to measure precipitation;
a communication unit connected to the inverter of the photovoltaic device in communication and transmitting data received from the inverter to an external server or terminal at regular intervals; and
The illuminance information measured by the illuminance sensor, the insolation information measured by the insolation measuring sensor, and any one or more of the precipitation information measured by the rainwater sensor are correlated and analyzed, and the communication unit to the external server or terminal Data transmission cycle control unit to control the data transmission cycle
A device for transmitting data of a photovoltaic device comprising a. According to claim 1,
When the illuminance measured by the illuminance sensor is less than 10% of the maximum value, and the insolation amount measured by the insolation measurement sensor is less than 10% of the maximum value, the data transmission period control unit determines that it is in a state before sunset and sets the data transmission period to 3 A device for transmitting data of a photovoltaic device, characterized in that it is controlled in and out of time. According to claim 1,
When the illuminance measured by the illuminance sensor is between 10% and 30% of the maximum value, when the irradiance measured by the insolation sensor is between 10% and 30% of the maximum value, the precipitation measured by the rainwater sensor is selected Among the cases exceeding the threshold value, if two or more conditions are satisfied, the data transmission period control unit determines that the weather is in a cloudy state and controls the data transmission period to about 1 hour. device to do. According to claim 1,
When the illuminance measured by the illuminance sensor is 30% or more of the maximum value, and the insolation amount measured by the insolation measurement sensor is 30% or more compared to the maximum value, the data transmission cycle control unit determines that the weather is in a clear state and sets the data transmission cycle A device for transmitting data of a photovoltaic device, characterized in that it is controlled within 10 minutes.

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