KR102554498B1 - A photovoltaic system equipped with solar junction box state monitoring diagnosis and remote monitoring - Google Patents

Abstract

The present invention relates to an automatic photovoltaic power generation monitoring system equipped with an intelligent predictive control interface for a remote control function, the configuration of which is that solar cells converting solar energy into electrical energy are arranged in at least one row and column. The voltage, current, and temperature status information of the solar module, the voltage and current status information of the array, which is a string assembly, and the voltage, current, power factor of the inverter that converts solar direct current power to AC power, Through frequency status information, data in a unified format is transmitted from modules to strings, strings to arrays, arrays to inverters, and inverters and connection boards to operation servers to determine the appropriate amount of power generation compared to the current solar power generation amount and current weather information, Automated solar power generation monitoring for preventive management and regular maintenance of the system by transmitting text and status information to the terminal device to control and manage the access panel by predicting the solar power generation efficiency index and abnormality of the access panel in advance system; Connect with the automatic photovoltaic monitoring system to receive and monitor information on the operation state and failure state of at least one automatic photovoltaic monitoring system, or automatically monitor the photovoltaic power generation according to the request signal or connection signal of the terminal device It transmits status information so that information on the operation status of the system can be checked and inquired in real time, or emergency text message or failure information is transmitted according to the occurrence of fire or failure of the connection board or inverter of a specific photovoltaic automatic monitoring system. An operation server that operates so that preventive management is performed in real time; Connect to the operation server and run the driving app to inquire and check information on the operation status of the automatic solar power monitoring system in real time, or fire or failure of the connection board or inverter of a specific automatic solar power monitoring system A terminal device that performs preventive management and maintenance of the system by checking access to information or receiving urgent text messages through a communication network according to; and a public institution terminal device that supervises overall procedures for power operation so that the power generated by the operation of the solar power generation automatic monitoring system is transmitted and stored to be used or supplied as power to individuals or institutions. to be
Accordingly, the present invention automatically detects, measures, calculates, and analyzes the problems of the connection panel by grasping the status of various signals generated by the inverter in the switchboard, operation, and real-time abnormality of the unit connection panel, and normal operation and abnormality through the control system. Safety problems can be solved by monitoring, quickly finding problems, and promptly repairing and servicing in the early stages by transmitting cut-off signals for each line to user terminals or administrator terminals.

Description

Solar power generation automatic monitoring system equipped with intelligent predictive control access panel for remote control function

The present invention relates to an automatic monitoring system for photovoltaic power generation equipped with an intelligent predictive control board for remote control, and more specifically, various signals generated from an inverter within a switchboard and operation and real-time abnormal conditions of a unit board. It identifies, automatically detects, measures, calculates, and analyzes the problems of the access panel, sends a signal to block normal operation and each abnormal line through control, and transmits it to the user terminal or manager terminal to monitor and quickly discover problems, and enable prompt repair and maintenance in the early stages. It relates to an automatic monitoring system for photovoltaic power generation equipped with an intelligent predictive control connection board for remote control functions to be performed.

In addition, the present invention detects the amount of light and temperature of the solar cell and solar cell array by an external sensor and transmits them to the control panel, and considers the voltage, current, and temperature detected and transmitted through the internal sensor inside the connection panel to be the main components inside the connection panel. The temperature detection data of the devices is transmitted to the control panel, and safety is ensured by using a relay to cut off the power of the connection panel according to the temperature rise occurring in the devices in the control panel, and the collected light amount of the external solar cell array, temperature and Solar light equipped with an intelligent predictive control connection board for remote control function that can transmit voltage, current, temperature, and temperature rise estimation data of devices to a remote user terminal or manager terminal and manage them in real time according to the presence or absence of abnormalities in the connection board It relates to an automatic power generation monitoring system.

Due to the depletion of fossil fuels and global warming caused by the use of fossil fuels, the development and supply of alternative energy is urgently needed, so the government is promoting a policy to gradually increase the proportion of alternative energy among domestic energy consumption.

As the most eco-friendly and unlimited energy source among alternative energy sources today, a solar power generation system that converts sunlight directly into electrical energy is in the limelight, and its supply is rapidly expanding with government support. A photovoltaic power generation system is composed of a plurality of solar panel modules that convert electrical energy by receiving sunlight, and obtains required power by connecting a plurality of solar panel modules in series or parallel.

In other words, the core of photovoltaic power generation is generally a solar cell with a pn junction structure. When photons from the outside are absorbed into the solar cell, electrons are generated inside the solar cell by the energy of the photon. ) and a pair of holes are created. The electron-hole pairs created in this way are collected at the electrodes on the surface of each semiconductor as electrons move to the n-type semiconductor and holes move to the p-type semiconductor by the electric field generated at the pn junction. When a load is connected to an external circuit, the charge collected at each electrode causes a current to flow through the load, thereby becoming a source of energy for operating the load.

Accordingly, the photovoltaic power generation system includes the solar cell, a storage battery for storing power generated from the solar cell, and an inverter for converting DC power generated from sunlight into AC power.

In general, solar power generation minimizes the impact of distributed power generation, system protection technology in preparation for accidents, and improves inverter control technology. It is adopting a grid-connected method in which it is supplied through a grid linked to KEPCO.

In the case of the junction box, contact failure of diodes or PCBs occurred due to external moisture that penetrated, and for this reason, reverse voltage was applied from the solar cell array as well as the inverter or switchboard, causing a fire. In the process, it also led to an electric shock accident.

As described above, the external temperature and humidity environment causes malfunction, poor contact, and overload of electrical components in the switchboard and junction box, and due to these causes, a fire occurs in the switchboard and junction box. In particular, when the place where the photovoltaic power generation system is installed is a building or a forest area, it leads to a building fire or a forest fire.

In other words, in the process of supplying safe and stable direct current power from solar cells to the inverter and KEPCO's power grid, changes in solar radiation, changes in the surrounding climate environment, and power gathered inside the junction box can generate unexpected sudden voltage. , If an abnormal situation occurs in the junction panel and solar power generation system due to causes such as arcing and temperature rise caused by current, the manager finds it in the monitoring system, checks the faulty part on site, and repairs or replaces the part. However, the time required for the manager to find a problem and dispatch to the site for repair may cause a fire, and it may take several days to repair or replace the internal device, so solar power generation is stopped in the meantime. There is a problem that causes significant losses.

Therefore, as the scale and installation location of the solar power generation system diversifies due to the spread of the solar power generation system, it is becoming difficult for users to individually check the setting status, failure, power generation status, operation status, etc. of the solar power generation system. The situation is. Therefore, there is a need to conveniently and comprehensively monitor the operating state of the photovoltaic power generation system in real time through a mobile terminal such as a smart phone.

Photovoltaic power generation system (PHOTOVOLTAIC SYSTEM EQUIPPED WITH SOLAR JUNCTION BOX INTERNAL ABNORMAL STATE MONITORING DIAGNOSIS AND REMOTE MONITORING) equipped with remote monitoring and diagnosis of abnormalities inside the solar panel (Patent Registration No. 10-1727743)

The present invention is to solve the above problems, and the present invention measures the voltage, current, power factor, frequency, etc. of AC power converted through an inverter from the input voltage and current transmitted by the connection board, and the abnormal signal generated in the unit inverter. In order to prevent abnormal situations from occurring, the solar system is organically protected and diagnosed through the signal generator so that the power line is cut off, and various signals generated by the inverter in the switchboard and operation and unit connection panels are checked in real time. By grasping the status, it automatically detects, measures, calculates, and analyzes the problems of the access panel, and transmits a normal operation and blocking signal for each abnormal line to the user terminal or manager terminal through the control system to monitor and promptly discover problems, promptly repair and It is to provide an automatic photovoltaic power generation monitoring system equipped with an intelligent predictive control access panel for a remote control function to perform maintenance.

However, the objects of the present invention are not limited to the above-mentioned objects, and other objects not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, an automatic photovoltaic monitoring system equipped with an intelligent predictive control connection board for a remote control function according to an embodiment of the present invention includes at least one solar cell that converts solar energy into electrical energy. Through the solar modules arranged in rows and columns, the state information of voltage, current, and temperature of the solar module, the state information of the voltage and current of the array, which is a string assembly, the voltage of the inverter that converts solar DC power into AC power, Current, power factor, and frequency status information is transmitted from module to string, from string to array, from array to inverter, and from inverter and junction box to operating server to deliver data in a unified format to the current solar power generation amount and current weather information. and transmits text and status information to the terminal device to control and manage the connection panel by predicting the photovoltaic power generation efficiency index and abnormality of the connection panel in advance, thereby performing preventive management and regular maintenance of the system. photovoltaic automatic monitoring system; Connect with the automatic photovoltaic monitoring system to receive and monitor information on the operation state and failure state of at least one automatic photovoltaic monitoring system, or automatically monitor the photovoltaic power generation according to the request signal or connection signal of the terminal device It transmits status information so that information on the operation status of the system can be checked and inquired in real time, or emergency text message or failure information is transmitted according to the occurrence of fire or failure of the connection board or inverter of a specific photovoltaic automatic monitoring system. An operation server that operates so that preventive management is performed in real time; Connect to the operating server and run the operating application to inquire and check information on the operation status of the automatic solar power monitoring system in real time, or fire or failure of the connection board or inverter of a specific automatic solar power monitoring system A terminal device that performs preventive management and maintenance of the system by checking access to information or receiving urgent text messages through a communication network according to; and a public institution terminal device that supervises overall procedures for power operation so that the power generated by the operation of the solar power generation automatic monitoring system is transmitted and stored to be used or supplied as power to individuals or institutions. to be

In addition, in the automatic monitoring system for photovoltaic power generation equipped with an intelligent predictive control connection board for remote control function according to an embodiment of the present invention, solar cells converting solar energy into electrical energy are arranged in at least one row and column. It is provided in each of the photovoltaic cell array and the solar cell to sense the output voltage from each photovoltaic cell, or to measure the ambient temperature, humidity, solar radiation or a combination thereof of the photovoltaic cell and the photovoltaic cell through the sensor unit, and each module The array provided inside connects the collection information of input voltage, input current, module temperature, output voltage, and output current to the maximum for electrical energy collected through solar energy, and the internal temperature, humidity, and CO ₂ current amount of each module. Receives the light quantity and temperature of the solar cell and solar cell array detected through the photovoltaic module transmitting in half, the external sensor connected to the photovoltaic module, and transmits it to the control panel, or is collected through each module assigned to the photovoltaic module Based on the maximum input voltage, input current, module temperature, output voltage, and output current collection information for the transmitted solar energy, and the internal temperature, humidity, and CO ₂ current amount of each module within the array, the standard set through the setting unit A connection panel that operates to predict abnormality and fire based on prediction information or to transmit the DC voltage of the collected and transmitted solar energy to the inverter, a solar module and a string composed of a plurality of solar modules and a plurality of strings Receives the configured array and DC power of the array and converts it into AC power to output to the outside and connects it to the power system, or provides sensing information and operating status information for each component of the AC distribution panel and solar power generation system for self-use. An inverter that transmits to the control panel that collects and processes, or transmits the processed sensing data to the operation server, a transformer that converts voltage, PLC (Power Line Communication), etc. are mounted, or a control panel for control, electricity supply and Electrical components such as various switches and relays (relays) for control, circuit breakers and fuses for voltage cutoff are arranged, and are provided as distribution panels and communication modules that supply surplus power output to inverters to public institution terminal devices through control panels. A control panel that transmits surplus power generated to the terminal device or transmits status information in the form of text or data of the system to the operation server or terminal device so that status information is transmitted in real time about the presence or absence of a failure of the device It is characterized in that it is configured to include.

An automatic photovoltaic monitoring system equipped with an intelligent predictive control access panel for a remote control function according to an embodiment of the present invention is the voltage, current, and power factor of AC power converted from the input voltage and current transmitted by the connection panel through an inverter. , Frequency, etc. are measured to detect abnormal signals generated from unit inverters, and to prevent abnormal situations from occurring, the solar system is organically protected and diagnosed through the signal generator so that the corresponding power line is cut off, and the manager through a fire diagnosis algorithm It can reduce CO ² generation by using fossil fuel due to fire and system shutdown by promptly notifying the user of system abnormalities by text message.

In addition, the solar power generation automatic monitoring system equipped with an intelligent predictive control access panel for remote control function according to the present invention grasps the status of various signals generated from inverters in the switchboard and real-time abnormality of operation and unit connection panels Automatically detects, measures, calculates, and analyzes the problems of the access panel and transmits the blocking signal for each normal operation and abnormal line to the user terminal or manager terminal through the control system to monitor and promptly discover problems, and quickly repair and maintain safety problems in the early stages. can solve

In addition, the solar power generation automatic monitoring system equipped with an intelligent predictive control access panel for remote control function according to the present invention detects the amount of light and temperature of solar cells and solar cell arrays from an external sensor, transmits them to the control panel, and transmits them to the connection panel Considering the voltage, current, and temperature detected and transmitted through the internal sensor of the control panel, the temperature detection data of the main parts inside the junction box is transmitted to the control panel, and the control panel cuts off the power of the junction box using a relay according to the temperature rise occurring in the devices. to ensure safety, and transmits the collected light quantity and temperature of the external solar cell array and the voltage, current, temperature and temperature increase estimation data of the devices inside the junction box to a remote user terminal or manager terminal to It provides effects that can be checked and managed in real time.

In addition, the automatic monitoring system for photovoltaic power generation equipped with an intelligent predictive control connection board for remote control function according to an embodiment of the present invention provides status information (voltage, current, module temperature) of the photovoltaic module, and the status of the array, which is a string assembly. information (voltage, current), status information (voltage, current, power factor, frequency, etc.) of the inverter that converts solar direct current power to AC power, and status information (voltage, current, temperature, humidity) of the junction box using the operation server Centralized management is possible, and the operation status and abnormalities of the overall system are checked and maintained to provide the effect of saving time and labor costs for management through regular meter reading.

In addition, the automatic photovoltaic monitoring system equipped with an intelligent predictive control junction box for remote control function according to an embodiment of the present invention collects data on system power generation failure and fire through a data collection monitoring module of an inverter and an intelligent predictive control junction box. Prevents accidents by reducing fires that can occur in solar junction boxes to the minimum range by enabling quick detection and control, and notifies managers in real time to easily check fire prediction diagnosis and faulty areas, so system operation and monitoring system By simplifying, it is possible to reduce facility construction costs and effectively manage maintenance.

1 is a configuration diagram of an automatic solar power generation monitoring system equipped with an intelligent predictive control connection panel for remote control function
FIG. 2 is a detailed block diagram of an automatic photovoltaic monitoring system equipped with an intelligent predictive control connection panel for a remote control function according to FIG. 1
3 is a schematic diagram of an automatic photovoltaic monitoring system equipped with an intelligent predictive control connection panel for remote control function
4 is an internal configuration diagram of an automatic photovoltaic monitoring system equipped with an intelligent predictive control connection panel for a remote control function according to FIG. 3
5 is a detailed block diagram of a connection panel of the automatic monitoring system for photovoltaic power generation according to FIG. 2;

Hereinafter, a detailed description of preferred embodiments of the present invention will be described with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted.

As shown in FIG. 1, the automatic photovoltaic monitoring system equipped with an intelligent predictive control access panel for remote control function according to the present invention largely includes a solar power generation automatic monitoring system 100, a communication network 200, operation It consists of a server 300, a terminal device 400, and an external institution device 500. Hereinafter, looking at the detailed configuration and operation, first, the automatic photovoltaic monitoring system 100 transmits sunlight through the photovoltaic module 110 in which solar cell cells converting solar energy into electrical energy are arranged in at least one row and column. State information of the voltage, current, and temperature of the optical module, state information of the voltage and current of the array, which is a string assembly, and state information of the voltage, current, power factor, and frequency of the inverter 130 that converts solar direct current power to AC power Through this, data in a unified format is transmitted from module to string, string to array, array to inverter, and inverter and junction box to operation server to determine the appropriate amount of power generation compared to the current solar power generation amount and current weather information, and solar power generation efficiency Preventive management and regular maintenance of the system can be performed appropriately by transmitting text and status information to the terminal device so that it can control and manage the access panel by predicting the presence or absence of abnormality of the index and access panel in advance.

On the other hand, the photovoltaic module 110 is set to a unique module number, a plurality of direct. Connected in a parallel structure and collecting information of maximum input voltage, input current, module temperature, output voltage, and output current for electrical energy collected through solar energy, each module within the array has internal temperature, humidity, CO ₂ current It is configured to enable identification of quantity, abnormality and fire prediction.

The operation server 300 applies the solar DC power generated according to the driving of the solar module 110 transmitted from the automatic photovoltaic monitoring system 100 to the connection panel 120 and converts it to the inverter 130. Based on the data transmitted to the string, string to array, array to inverter, and drive of the inverter and connection board as it is converted into AC power through All aspects of the automatic photovoltaic monitoring system 100 and the terminal device 400 to transmit status information to the terminal device 400 by receiving predictions of the existence and non-existence of the connection board and to prevent failures in advance and to perform maintenance control negative behavior.

In addition, the operation server 300 is configured to receive information such as temperature, humidity, precipitation, wind speed, snowfall and atmospheric pressure sensed through a sensing unit provided on one side of the solar module 110 .

That is, the operation server 300 is a terminal device 400, a dedicated APP (application) for quick response to the failure or abnormality of the connection board 120 and inverter 130 of the automatic photovoltaic monitoring system 100. Information according to driving is stored, and the application (APP) is transmitted to the terminal device 300 according to the driving of the application (APP), and the appropriate amount of power generation is determined in comparison with the amount of solar power generation and current weather information, and is connected to the solar power generation efficiency index Status information is transmitted to the terminal device 400 so that the connection board 120 can be controlled and managed by predicting whether or not there is an abnormality in the board in advance, or in response to a connection signal of a driving application (app) of the terminal device 400, text message Alternatively, the status information of the access panel 120 is transmitted so that preventive management and regular maintenance of the system are performed in real time.

Alternatively, the operation server 300 accesses the automatic photovoltaic monitoring system 100 to receive and monitor information on the operation state and failure state of at least one automatic photovoltaic monitoring system, or the terminal device 400 Status information is transmitted so that information on the operation status of the automatic solar power monitoring system can be checked and inquired in real time according to the request signal or connection signal of 120), an emergency text message or failure information is transmitted according to the occurrence of a failure such as a fire in the inverter 130 so that preventive management of the system is performed in real time.

On the other hand, the operation server 300 stores the measurement year/month/day/hour/minute/second, site number, site weather information, number of arrays and state information of each array in the payload of the transmission protocol for data transmission. , the number of modules and module state information are received in order. Since a plurality of arrays may exist in one site, there may be a plurality of inverter information. i.e. per array. There are a number of strings. One array consists of a total of 49 bytes including the array number (1 byte) and measurement information of the inverter (48 bytes), and one array consists of the array number (1 byte) and measurement information of the inverter. (48 bytes) and consists of a total of 49 bytes. In addition, one module consists of 13 bytes including an array number, a string number and 10 bytes of status information. In the case of a 1MW power generation system, there are about 2,400 modules when a 250W module is used.

The terminal device 400 is classified as a user terminal or an administrator terminal and is a subject that responds quickly in response to an emergency such as a fire in an automatic monitoring system for photovoltaic power generation. to query and check information on the operation status of the automatic photovoltaic monitoring system 100 in real time, or fire of the connection board 120 and inverter 130 of a specific automatic monitoring system 100, etc. According to the occurrence of a failure, failure information is checked for access or received as an emergency text message through the communication network 200 so that preventive management and maintenance of the corresponding system are applied to the field in real time.

More specifically, the terminal device 400, based on the output voltage of a specific cell of the solar module 110 transmitted through the operation server 300, when the output voltage of other cells is out of a preset range, the specific cell It is judged that this is broken, and the status according to the failure is visited on-site to quickly check and take action.

The external agency device 500 receives and stores the electric power generated by the operation of the automatic photovoltaic monitoring system 100, and manages overall procedures for power operation so that it is used or supplied as electric power to individuals or institutions.

The communication network 200 is a communication network that is a high-speed backbone network of a large-scale communication network capable of providing large-capacity, long-distance voice and data services, and may be a next-generation wired and wireless network for providing Internet or high-speed multimedia services. When the communication network 200 is a mobile communication network, it may be a synchronous mobile communication network or an asynchronous mobile communication network.

As an example of an asynchronous mobile communication network, a wideband code division multiple access (WCDMA) communication network may be used. In this case, although not shown in the drawings, the mobile communication network may include a Radio Network Controller (RNC). Meanwhile, although the WCDMA network is taken as an example, it may be a next-generation communication network such as a 3G LTE network, a 4G network, a 5G network, or other IP-based IP networks. The communication network 200 serves to mutually transmit signals and data between the automatic photovoltaic monitoring system 100, the operation server 300 connected to the communication network 200, the terminal device 400, and the system.

Attached FIG. 2 shows a detailed block diagram of an automatic photovoltaic monitoring system equipped with an intelligent predictive control connection board for a remote control function according to the present invention, which includes a solar module 110, a connection board 120, and an inverter. (130), distribution board (140) and control panel (150).

Hereinafter, referring to FIGS. 1 and 2, the operation and characteristics of the solar module 110 are solar cell arrays in which solar cells converting solar energy into electrical energy are arranged in at least one row and column. and solar cells are provided respectively to receive solar energy and convert it into power, and each module has an identifiable module number to predict internal temperature, humidity, CO ₂ current amount, abnormality and fire within the array. That is, the photovoltaic module 110 includes a sensing unit that senses the output voltage of each solar cell or measures the ambient temperature, humidity, solar radiation, or a combination thereof of the solar cell and the solar cell, and is unique to each module. Multiples set by number are direct. The array connected in parallel structure and provided in each module collects the maximum input voltage, input current, module temperature, output voltage, and output current for the electrical energy collected through solar energy, and the internal temperature and humidity of each module. , CO ₂ current amount, etc. are transmitted to the connection panel.

The connection panel 120 transmits the light quantity and temperature of the solar cell and solar cell array detected through an external sensor connected to the solar module 110 to a control panel, and the voltage, current, The temperature and the detected temperature information of the main internal parts are transmitted to the control panel to estimate the temperature rise occurring in the devices in the control panel and cut off the power of the connection panel using a relay to ensure safety.

More specifically, the connection panel 120 collects information of maximum input voltage, input current, module temperature, output voltage, and output current for the solar energy collected and transmitted through each module of the solar module 110. Within the array, each module predicts the internal temperature, humidity, and current amount of CO ₂ based on the standard and fire prediction information set through the setting unit, or converts the DC voltage of the collected and transmitted solar energy into an inverter ( 130).

On the other hand, the environment collection device 160 is provided on one side of the connection panel 120 and detects the internal temperature, humidity, and carbon dioxide concentration through a sensor to inspect the connection panel 120, and transmits the detected signals and signals to facilitate intelligent management. Collected data such as input voltage, current, power saving, voltage/current/power of 3-phase output, power factor, frequency, and cumulative power generation transmitted through the solar module, and information such as horizontal/vertical solar radiation and air temperature are transmitted through a communication network. It is transmitted to the operation server 300 through (200).

The inverter 130 is the minimum component of the automatic monitoring system for photovoltaic power generation, and receives the solar module 110, a string composed of a plurality of photovoltaic modules, an array composed of a plurality of strings, and DC power of the array and outputs it to the outside. converted to AC power for That is, the DC voltage collected through the battery cell through the solar module is received through the connection panel 120 and converted into an AC voltage.

The inverter 130 is a control panel 150 that connects the produced AC power to the power system or collects and processes sensing information and operating state information for each component of the AC distribution board and photovoltaic power generation system for self-use. To transmit, or to transmit the processed sensing data to the operating server (300).

On the other hand, the signal generator 170 interlocks with the unit inverter 130 to detect an abnormal signal generated from the inverter 130, organically protects and diagnoses the solar system to prevent an abnormal situation from occurring, make it blocked

The distribution board 140 is configured to supply surplus power output from the inverter 130 to a terminal device 500 of an external public institution such as KEPCO through a control panel 150 .

That is, the distribution panel 140 is equipped with a transformer for converting voltage, PLC (Power Line Communication), etc., a control panel for control, various switches and relays (relays) for supply and control of electricity, and a circuit for blocking voltage. Electrical components such as circuit breakers and fuses are arranged and managed in an integrated manner. On the other hand, since the distribution board is usually installed outdoors, it is exposed to direct sunlight as it is, and accordingly, the temperature inside the distribution board rises rapidly due to solar radiation, thereby heating various electrical components, and accordingly, failure of electrical components due to an increase in resistance or load. However, it may cause a malfunction or a fire, which may cause a malfunction or fire signal to be transmitted to the portable terminal of the user or administrator of the terminal device 400 under the control of the operation server 300, thereby real-time management and emergency situations. can deal with

The control panel 150 transmits surplus power generated by the public institution terminal device 500 or transmits state information of the automatic photovoltaic monitoring system 100 to the operation server 300 or terminal device 400. A communication module is provided to transmit status information in real time about whether or not there is a problem with the device and whether a failure occurs.

5 is a block diagram showing the detailed configuration of the connection board in the automatic photovoltaic monitoring system according to the present invention, which includes a control unit 121, a sensor unit 122, a calculation unit 123, a setting unit 124, and a storage unit. 125, comparator 126, sending unit 127 and interlocking unit 128.

The control unit 121 receives a photovoltaic module, a string composed of a plurality of photovoltaic modules, an array composed of a plurality of strings, and DC power of the array as a minimum component, and converts the DC power into AC power for output to the outside. That is, the DC voltage collected through the battery cell through the solar module is received through the connection panel 120 and converted into an AC voltage to obtain sensing information for each component of the AC distribution panel and automatic photovoltaic monitoring system for self-use. And control the overall operation of the inverter to collect and process the operation status information, transmit or transmit the processed sensing data to the operation server (300).

That is, the control unit 121 collects information transmitted from an external sensor provided on one side of the outside of the solar module and an internal sensor provided on one side inside the inverter, or information on a plurality of change rate coefficients and weight coefficients using sensor data. is stored in the storage unit, or by using the data information, the temperature rise of the devices inside the junction box is calculated and a control signal is generated so that control can be performed.

The sensor unit 122 is installed on one side of the inside of the connection panel in response to the control signal of the control unit 121, and detects voltage, current, temperature, etc. The temperature rise is estimated and the relay is used to cut off the power to the connection panel so that safety can be secured.

The calculation unit 123 responds to the control signal of the control unit 121, the generation amount increase change rate coefficient according to the amount of electricity collected from the solar module transmitted through the connection board 120, the current increase change rate coefficient according to the amount of power generation increase, A rate of change coefficient consisting of a rate of change rate of temperature increase according to current and a rate of change rate of temperature decrease according to ambient temperature is calculated.

The storage unit 125 includes a change rate coefficient calculating circuit that is electrically charged according to the control signal of the control unit 121, assigns a weight to each of the plurality of change rate coefficients, calculates the resultant values, and stores the temperature rise value.

The setting unit 124 collects the DC power generated from the solar array in response to the control signal of the control unit 121 and transmits it to the inverter. Temperature sensed and collected through the sensor unit 122 inside the junction box, Using data such as humidity, CO ₂ , voltage, current, etc., the standard value for abnormality of the connection panel is set.

That is, the setting unit 124 transmits data according to the comparative data extraction by the comparison unit 126 based on the collected light quantity and temperature of the external solar cell array and the voltage, current, temperature, and temperature rise estimate data of the devices inside the connection panel. It is transmitted to the operation server 300 through the unit 127 and displayed so that the presence or absence of abnormalities is managed.

The storage unit 125 stores the collected light quantity and temperature of the external solar cell array and the voltage, current, and temperature data of the devices inside the junction box, and the DC power and inverter 130 collected by the solar module 110 Calculate the converted AC power and store the amount of power generation by hour, day, month or year, transmit the corresponding data to the operation server 300, or connect the data collected to the terminal device 400 through the interlocking unit 128 and After calculation, the amount of power generated is sent out.

That is, the storage unit 125 stores solar cell temperature, air temperature, ambient temperature, horizontal solar radiation, vertical solar radiation collected data, instantaneous power generation generated by the inverter, cumulative power generation, and voltage, current, and temperature of each string of solar cells. Collection and operation information, daily power generation, monthly power generation, annual power generation prediction information, solar radiation (horizontal solar radiation, inclined solar radiation) power generation capacity, temperature (module, standby) monitoring measurement information, status by inverter by hour/day/month/year Including reference information, data such as string monitoring, database storage, current/day/month/year power generation display, string voltage/current/temperature may be stored.

The comparator 126 compares the temperature rise value with a preset temperature range according to the temperature range set through the setting unit 124, and if the temperature rise value is less than or equal to the set value range, it is normal, and if it exceeds the preset value range, it is normal. The abnormal information is sent to the sending unit 127 or linking unit 128.

The transmitting unit 127 transmits the calculated power generation amount of sunlight to the operation server 300 according to the judgment of the comparison unit 127 based on the data collected and transmitted to the storage unit and provides it hourly, daily, monthly or yearly. To be, or connected to the interlocking operation server 300 to collect the relevant data, transmit the collected data, calculate and transmit the measured power generation data.

The interlocking unit 128 calculates a plurality of coefficients of change based on the information of the voltage, current, temperature, humidity, and fire data determined by the comparing unit 126, calculates and controls the values, and controls the user or manager's It works so that the corresponding data is transmitted in conjunction with a text message or an execution application (app) with a terminal device so that management is performed according to the presence or absence of abnormalities in real time.

That is, in the switchboard, the power line is cut off by grasping the status information of various signals generated by the inverter, operation, and unit connection panel in real time, or in case of an emergency such as fire, the corresponding status information is interlocked with text or an application (app) This ensures that the data is transmitted to protect the system and ensure stable operation.

As described above, the present specification and drawings disclose a product configured as a preferred embodiment of the present invention, and although specific terms are used, this is only in a general sense to easily explain the technical content of the present invention and aid understanding of the present invention. are used and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art that other modified examples based on the technical spirit of the present invention can be implemented in addition to the embodiments disclosed herein.

100: Solar power generation automatic monitoring system
110: solar module
120: connection board
121: control unit 122: sensor unit
123: calculation unit 124: setting unit
125: storage unit 126: comparison unit
127: transmission unit 128: interlocking unit
130: inverter 140: distribution board
150: control panel 160: environment collection device
170: signal generating unit
200: communication network
300: operation server
400: terminal device
500: external organ device

Claims (4)

A solar cell array that converts solar energy into electrical energy is provided in a solar cell array and solar cell arranged in at least one row and column to sense the output voltage from each solar cell, or The ambient temperature, humidity, solar radiation, or a combination thereof of the cell is measured through the sensor unit, and the array provided in each module measures the maximum input voltage, input current, module temperature, and output voltage for the electrical energy collected through solar energy. , the solar module 110 that transmits the collection information of the output current and the internal temperature, humidity, and CO ₂ current amount of each module to the connection panel, the solar cell and the sun detected through the external sensor connected to the solar module 110 The maximum input voltage, input current, module temperature, output voltage, Based on the collection information of the output current and the current amount of CO 2 in the array, each module predicts it based on the standard and fire prediction information set through the setting unit based on the internal temperature, humidity, and current amount of CO ₂ , or the collected and transmitted solar energy A connection board 120 operating to transmit DC voltage to the inverter 130, a solar module 110, a string composed of a plurality of photovoltaic modules, an array composed of a plurality of strings, and a direct current power of the array received to the outside It is converted into AC power for output and connected to the power system, or sent to the control panel 150 that collects and processes sensing information and operation status information for each component of the AC distribution panel and photovoltaic power generation system for self-use. , Inverter 130 that transmits the processed sensing data to the operation server 300, a transformer that converts voltage, a PLC (Power Line Communication), etc. are mounted, or a control panel for control, various types of electricity supply and control A switch and relay (relay), a circuit breaker for voltage cutoff, and electrical components such as fuses are arranged to supply surplus power output to the inverter 130 to the public institution terminal device 500 through the control panel 150 (140) ) Solar power generation automatic monitoring system consisting of (100); It is connected to the automatic photovoltaic monitoring system 100 to receive and monitor information on the operating state and failure state of at least one automatic photovoltaic monitoring system, or according to a request signal or connection signal of the terminal device 400. Status information is transmitted so that information on the operation status of the automatic photovoltaic monitoring system can be checked and inquired in real time, or An operation server 300 that transmits emergency text messages or failure information in case of a fire or failure so that preventive management of the system is performed in real time; Access to the operation server 300 and run a driving application to query and check information on the operation status of the automatic photovoltaic monitoring system 100 in real time, or A terminal device (400) that performs preventive management and maintenance of the system by checking access to information according to the occurrence of a fire or failure of the connection board (120) or inverter (130) or by receiving emergency text messages through the communication network (200) ; and a public institution terminal device 500 that supervises overall procedures for power operation so that the power generated by the operation of the automatic photovoltaic monitoring system 100 is transmitted and stored to be used or supplied as power to individuals or institutions; In the solar power generation automatic monitoring system equipped with an intelligent predictive control access panel for a remote control function comprising:
The solar power generation automatic monitoring system 100 provides voltage, current, and temperature state information of the solar module, voltage and current state information of the array, which is a string assembly, and solar DC power through the solar module 110 Through the state information of voltage, current, power factor, and frequency of the inverter 130 that converts to AC power, data in a unified format from the module to the string, from the string to the array, from the array to the inverter, and from the inverter and the junction box to the operation server 300 text and status information to a terminal device to determine the current amount of solar power generation and the current weather information, and to predict the solar power generation efficiency index and abnormality of the access panel in advance to control and manage the access panel. to ensure preventive management and regular maintenance of the system,
It is provided as a communication module and transmits surplus power generated to the public institution terminal device 500, or transmits status information as text or data of the system to the operation server 300 or terminal device 400 to determine whether or not there is a problem with the device and A control panel 150 that transmits status information in real time in response to a failure;
It is provided on one side of the junction panel 120 to detect internal temperature, humidity, and carbon dioxide concentration through a sensor to inspect the junction panel 120, and to facilitate intelligent management, the sensed signal and input transmitted through the solar module Voltage, current, power saving, voltage/current/power of three-phase output, power factor, frequency, environment collection device that transmits collected information data of accumulated power generation, horizontal/vertical solar radiation, and atmospheric temperature information to the operation server 300 ( 160),
The signal generator 170 interlocks with the inverter 130 to detect abnormal signals generated from the inverter 130, organically protect and diagnose the system to prevent abnormal situations, and cut off the corresponding power line. contain more,
The connection board collects DC power generated from the solar array and transmits it to the inverter, and connects using data of temperature, humidity, CO ₂ , voltage, and current sensed and collected through the sensor unit 122 inside the box. According to the temperature range set through the setting unit 124 for specifying the reference value for whether or not there is an abnormality in the half, the temperature rise value is compared with the preset temperature range in the comparison unit 126, and if the temperature rise value is less than the set numerical range, it is normal. If it exceeds the set numerical range, it is judged to be abnormal, calculates a plurality of change rate coefficients based on the information of voltage, current, temperature, humidity, and fire data, calculates and controls the values, and sends text messages to the terminal device 400 of the user or administrator. Or an automatic monitoring system for photovoltaic power generation equipped with an intelligent predictive control access panel for a remote control function, characterized in that configured to transmit the corresponding data in conjunction with an execution application (app) and manage it according to the presence or absence of abnormality in real time. delete delete delete

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