KR20150078393A - Connection board for solar photovoltaic power generator - Google Patents

Abstract

The present invention relates to a connection board for a solar photovoltaic power generator, which quickly and accurately determines whether or not a fire occurs in the connection board for a solar photovoltaic power generator. Specifically, the present invention relates to the connection board for a solar photovoltaic power generator which receives power generated and outputted from at least one solar photovoltaic power generator, and transmits the power to an inverter. The connection board comprises: an input unit for receiving the power generated and outputted from at least one solar photovoltaic power generator; an output unit which is electrically connected to the input unit and receives a direct current outputted from the input unit so as to be outputted to the electrically connected inverter; an input power breaker which is provided between the input unit and the output unit, and selectively cuts off power outputted from the input unit; a sensing unit for detecting the internal condition of the connection board for the solar photovoltaic power generator; a control unit for controlling the input unit, the output unit, the input power breaker, and the sensing unit; and a housing unit which accommodates and supports the input unit, the output unit, the input power breaker, the sensing unit, and the control unit, and forms the external appearance of the connection board for the solar photovoltaic power generator. The control unit is configured to determine whether or not a fire occurs in the housing unit based on the internal condition of the connection board for the solar photovoltaic power generator detected in the sensing unit.

Description

[0001] CONNECTION BOARD FOR SOLAR PHOTOVOLTAIC POWER GENERATOR [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connection panel for a photovoltaic power generation device, and more particularly to a connection panel for a photovoltaic power generation device for quickly and accurately determining whether or not a fire has occurred in a connection panel for a photovoltaic power generation device.

The pollution of the global environment and the depletion of fossil energy sources have already become a matter of considerable concern and become an important threat to humanity. As a result, efforts were made to reduce environmental pollution across countries and races, and to find environment-friendly renewable energy sources.

Renewable energy is the energy source that is expected to become the center for the paradigm shift of new energy. Especially, among the renewable energy, the photovoltaic power generation device is the development method closest to practical use.

Such a photovoltaic device does not require fuel cost by using solar energy, and does not cause air pollution or waste. In addition, it is easy to semi-automate or automate the system, so that the cost of operation and maintenance can be minimized, and the time of peak power generation is similar to that of summer peak power consumption time. It is possible to solve the imbalance of power supply and demand during the connection operation with the system, and it is attracting attention as a power supply source that can efficiently use the domestic resources by installing various forms such as roofs of houses and buildings.

Therefore, solar power generation equipment is currently experiencing a huge boom in the world, showing an increasing trend of 30 ~ 40% per year. In recent years, it has become even more marked, indicating that the raw material shortages of silicon solar cells, which currently dominate the solar power industry, account for more than 85%.

In Korea, the supply of PV systems has started to increase rapidly since 2004. According to the survey conducted by the World Energy Agency, Korea is the second highest growth rate among the IEA member countries following the largest increase in PV demand.

As described above, the photovoltaic device, which is attracting attention as a future renewable energy source, converts the light energy incident from the sun into electric energy, collects the collected electric energy, and stores the collected electric energy, Is converted into alternating-current energy and input to the transformer.

In such a photovoltaic power generation apparatus, a plurality of solar panels for collecting incident sunlight are provided, and each of the solar battery modules is provided with the above-described photovoltaic power generation device.

On the other hand, in order to prevent the circuit from being damaged due to an electric shock in which unexpected sudden voltage or current is generated in the photovoltaic power generation apparatus, and to prevent the imbalance of power generation characteristics of the solar panel due to other factors such as the environmental change, Branch protection devices.

The connection part for the photovoltaic device is connected to the output part of the photovoltaic device.

The connection unit for the photovoltaic device for the photovoltaic device according to the related art transmits the power received from the photovoltaic device to the inverter, and the power received by the photovoltaic device is surge power , The power supplied from the photovoltaic power generation device is supplied to the inverter and / or to each load so as to prevent the damage of the inverter and damage of each load supplied with the power generated by the photovoltaic power generation device .

However, according to the related art connecting board for a photovoltaic power generation apparatus according to the related art, a fire occurs in electrical parts inside the connection panel for a solar power generator due to a surge voltage, or a fine dust There has been a problem that a foreign substance formed by the coalescence is burned due to the high-temperature heat of the electric components, resulting in a fire.

When a fire occurs in a connection panel for a photovoltaic power generation device, the connection panel for a photovoltaic power generation device according to the prior art does not have a technology for detecting a fire or notifying an administrator of the fire, There has been a problem in that it is extended to a place where the connection panel for the photovoltaic device is installed, leading to a secondary fire.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a connection panel for a photovoltaic power generation apparatus which solves the problems of the prior art.

Specifically, it is an object of the present invention to provide a connection panel for a photovoltaic power generation apparatus for quickly determining whether or not a fire inside a connection panel for a photovoltaic power generation apparatus is generated.

It is still another object of the present invention to provide a connection panel for a photovoltaic power generation apparatus that accurately determines whether or not a fire has occurred in a connection panel for a photovoltaic power generation apparatus.

According to an embodiment of the present invention, the present invention provides a connection panel for a photovoltaic power generation apparatus, which receives power generated from at least one photovoltaic device and transmits the power to an inverter, An input unit for receiving power generated and output from the photovoltaic device; An output unit electrically connected to the input unit for receiving a direct current output from the input unit and outputting the direct current to an electrically connected inverter; An input power breaker provided between the input unit and the output unit for selectively interrupting power output from the input unit; A sensing unit for sensing an internal state of the connection unit for the photovoltaic device; A control unit for controlling the input unit, the output unit, the input power breaker, and the sensing unit; And a housing unit for housing and supporting the input unit, the output unit, the input power breaker, the sensing unit, and the control unit, and forming a housing of the connection unit for the photovoltaic device, And determining whether or not a fire has occurred in the housing unit based on the internal state of the connection unit for the photovoltaic device detected by the detection unit.

Preferably, the sensing unit includes a smoke sensor, and the smoke sensor is disposed at an upper portion of the housing unit.

Preferably, the housing portion includes: an air inlet through which external air flows into the housing portion from a lower portion of both side surfaces of the housing portion; An air outlet through which air in the housing part is discharged from upper portions of both side surfaces of the housing part; And a blower installed in the housing part for forcibly circulating the air inside the housing part from the air inlet toward the air outlet.

Preferably, the housing portion includes: an air inlet through which external air flows into the housing portion from a lower portion of both side surfaces of the housing portion; An air outlet through which air in the housing part is discharged from upper portions of both side surfaces of the housing part; A partition part dividing the inside of the housing part into the upper accommodating space and the lower accommodating space with respect to the lowest part of the portion where the air outlet is formed in the both side surfaces of the housing part and having the inflow opening at the center; And a blower installed in the inflow opening in the upper accommodating space for forcibly circulating the air inside the housing part from the air inlet toward the air outlet.

Preferably, the blower further comprises a driving motor and a centrifugal fan rotated by the driving motor and disposed in the inflow opening.

Preferably, the smoke sensing sensor is provided on both sides of the centrifugal fan in an upper accommodation space of the housing part.

Preferably, when the smoke is detected through the smoke detection sensor, the controller determines that a fire has occurred in the connection panel for the photovoltaic device.

Preferably, the control unit determines that a fire has occurred in the connecting panel for the solar power generation device only when the smoke detection time is longer than a preset time when the smoke detection sensor detects smoke. .

Preferably, the sensing unit includes a heat sensing sensor for sensing a temperature or heat inside the connection unit for the photovoltaic device.

Preferably, the thermal sensor is provided on at least one side of the input unit and the input power circuit breaker.

Preferably, when the control unit senses that the internal temperature of the connection unit for the photovoltaic device is changed to be equal to or higher than a predetermined first temperature change value through the heat sensor, It is determined that a fire has occurred.

Preferably, the control unit detects that the internal temperature of the connection unit for the photovoltaic device changes to a predetermined second temperature change value smaller than the preset first temperature change value through the heat sensor The blower provided in the connection panel for the solar power generator is driven so as to forcibly circulate the internal air of the connection unit for the photovoltaic power generator to the outside.

Preferably, when the control unit senses that the internal temperature of the connection unit for the photovoltaic device is changed to a predetermined first temperature variation value or more through the heat sensing sensor, Or more is longer than a preset time, it is determined that a fire has occurred in the connection panel for the photovoltaic device.

Preferably, the control unit controls the input power source breaker to prevent power from being transmitted from the input unit to the output unit when it is determined that a fire has occurred in the connection unit for the photovoltaic device.

Preferably, the connection unit for the photovoltaic device further includes a wireless communication unit capable of data communication with the terminal of the manager of the connection unit for the photovoltaic power generation device, wherein the control unit judges that a fire has occurred in the housing unit The fact that the fire occurred in the connecting module for the PV system is transmitted to the terminal of the manager through the wireless communication unit.

According to the present invention, it is possible to promptly determine whether or not a fire has occurred in the connection panel for a photovoltaic device through the sensing unit, and to quickly transmit the fact of occurrence of a fire to a manager in the event of a fire, It is possible to quickly prevent the spread of the fire inside the connection unit for power generation equipment and spreading into the secondary large-sized fire.

In addition, the present invention can accurately determine whether or not a fire has occurred in the connection panel for a solar power generation device, thereby improving the fire management efficiency of the connection panel for the photovoltaic power generation device of the management company, It is possible to quickly prevent the spread of the fire inside the semi-large-sized fire.

1 is a schematic view of a solar power generation system according to an embodiment of the present invention,
2 is a schematic block diagram of a solar power generation system according to an embodiment of the present invention,
3 is a schematic block diagram of a connection panel for a photovoltaic device according to an embodiment of the present invention,
4 is a schematic external front view of a connection panel for a photovoltaic power generation apparatus according to an embodiment of the present invention,
5 is a schematic internal top view of a connection panel for a photovoltaic device according to an embodiment of the present invention,
FIG. 6 is a partially enlarged internal elevation view of a connecting panel for a solar power generator according to another embodiment of the present invention,

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be noted that the drawings denoted by the same reference numerals in the drawings denote the same reference numerals whenever possible, in other drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. And certain features shown in the drawings are to be enlarged or reduced or simplified for ease of explanation, and the drawings and their components are not necessarily drawn to scale. However, those skilled in the art will readily understand these details.

FIG. 1 is a schematic diagram of a solar power generation system 1000 in accordance with an embodiment of the present invention, and FIG. 2 is a schematic block diagram of a solar power generation system 1000 in accordance with an embodiment of the present invention.

1 and 2, a solar power generation system 1000 according to an embodiment of the present invention includes a plurality of solar power generation devices 100, a connection panel 200 for a solar power generation device, (300), an AC switchboard (400), a power system (500), a load (600) and an information number group (700).

Here, not all the components of the solar power generation system 1000 shown in FIG. 1 are essential components, and the solar power generation system 1000 may be implemented by more components than the components shown in FIG. 1 And the solar power generation system 1000 may be implemented by fewer components.

The photovoltaic device 100 converts solar energy into electrical energy, outputs the solar cell, and includes a plurality of unit cells. This unit cell generally generates (or produces) a voltage of about 0.5 V to 0.6 V, that is, about 3 W to 4 W, and the photovoltaic device 100, which is composed of a plurality of unit cells, And generally has an output of about 16V to 26V and 120W to 200W although there is a difference depending on the number of unit cells to be constituted.

In addition, the photovoltaic device 100 is provided with unique identification information managed by the connection panel 200 for the photovoltaic device or the information number group 700.

The connection panel 200 for the photovoltaic device receives the direct current power output from the plurality of photovoltaic devices 100. The connection unit 200 for a photovoltaic power generation apparatus includes a plurality of input terminals (or a plurality of channels), the plurality of input terminals are connected to the input unit 201, and the input unit 201 And receives the DC power output from the plurality of solar power generation apparatuses 100, respectively, and integrates them into one power.

In addition, the connection panel 200 for the photovoltaic device measures voltage or current received through the plurality of input terminals through a measurement unit included in the connection panel 200 for the photovoltaic device.

When the measured voltage or current is within a predetermined voltage or current range, the connection unit 200 for a photovoltaic power generator controls the operation of the switching unit so that a voltage or current received through the input terminal is output to the output unit 203 ). That is, when the measured voltage or current is within a predetermined voltage or current range, the connection panel 200 for the photovoltaic device determines that the power generation capacity of the plurality of photovoltaic devices 100 is in a normal state So that a voltage or current received through the input terminal does not pass through a diode included in the connection panel 200 for the photovoltaic device, and a voltage or current received through the input terminal is supplied to the output unit 203 And controls the switching unit to be directly connected.

When the measured voltage or current does not exist within a preset voltage or current range, the connection unit 200 for the photovoltaic power generator controls the operation of the switching unit so that the input terminal (i.e., the input unit 201) To be transmitted to the output unit 203 through the diode.

That is, when the measured voltage or current does not exist within a predetermined voltage or current range, the connecting panel 200 for a photovoltaic power generation apparatus determines that the power generation capacity of the plurality of photovoltaic power generation apparatuses (600) state, such as a case where the load is less than the capacity or the line, and controls the switching unit to transmit the voltage or current received through the input terminal to the output unit 203 through the diode.

In order to prevent the current flowing in the reverse direction from flowing into the solar cell module only when an abnormality such as a no-load state 600 occurs, The operation of the diode can be controlled.

The connection unit 200 for the solar power generation apparatus includes a wireless communication unit 240 to transmit the internal state of the connection unit 200 for the solar power generation apparatus to the terminal T of the administrator .

The inverter 300 receives the direct current power output from the connection unit 200 for the photovoltaic power generator and converts the received direct current power into alternating current power to be supplied to the power system 500 or each load 600 To transmit the AC power.

In addition, the inverter 300 outputs the converted AC power in synchronization with the voltage of the power system.

The inverter 300 further includes an inverter 300 for receiving the DC current, the DC voltage, the DC power, the converted AC current, the AC voltage, the converted AC power, the temperature of the inverter 300, And a sensor (not shown) capable of detecting whether or not it is possible. The information sensed by the sensor included in the inverter 300 is transmitted to the information count group 700.

Also, the inverter 300 senses information such as current output power, current generation power, cumulative power generation amount, and carbon dioxide reduction amount, and transmits the information to the information number population 700.

The AC switchboard 400 boosts the AC voltage output from the inverter 300. For example, the AC switchboard 400 performs a function of boosting the AC voltage output from the inverter 300 to about 350 V to 23 kV.

The AC switchboard 400 is connected to the AC switchboard 400 through the inverter 300 so that the AC switchboard 400 can output the alternating current, And may further include a sensor (not shown) for detecting an abnormality of the AC power distribution board 400. The information sensed by the sensors included in the AC switchboard 400 is transmitted to the information count group 700.

The power system 500 performs a function of supplying or storing a voltage or a current output from the AC power distribution board 400 to the load 600. Here, the power system 500 may be a system generally operated by KEPCO.

The load 600 is a consumer that consumes the voltage or current supplied from the AC switchboard 400 or the power system 500 (or, for example, household appliances provided in the consumer). Here, the load 600 may be an electric appliance in a general household, an electric appliance in an industry, or the like.

The information count group 700 is connected to an output terminal of the inverter 300 and receives various information outputted from the inverter 300. Here, the information count group 700 may be a personal computer, a notebook computer, or the like.

The information count group 700 receives various weather information (or weather data) sensed and transmitted by a weather sensor (or a weather sensor) (not shown) included in the solar power generation system 1000 do. Here, the weather information includes a solar radiation amount, a temperature of the solar power generation apparatus 100, an ambient temperature (or outside temperature) of the solar power generation apparatus 100, a humidity, a wind direction and a wind speed.

Also, the information number group 700 arranges and outputs / displays the received information.

Hereinafter, a connection panel 200 for a solar power generator according to the present invention will be described in more detail with reference to the drawings.

FIG. 3 is a schematic block diagram of a connection panel 200 for a photovoltaic device according to an embodiment of the present invention. FIG. 4 is a cross-sectional view of a connection panel 200 for a photovoltaic device according to an embodiment of the present invention. 5 is a schematic interior top view of a connection panel 200 for a photovoltaic device according to an embodiment of the present invention.

3 to 5, a connection panel 200 for a solar power generator according to an embodiment of the present invention includes an input unit 201, an output unit 203, a sensing unit 270, A display unit 250, a power supply unit 260, a control unit 280 for controlling the above-described components, and a control unit 280 for controlling the above- And a housing part 210 accommodating the housing part 210.

The input unit 201 outputs the DC power input from each solar cell 100 connected in parallel or in series in a serial connection manner, wherein the plurality of solar cells 100 are connected in parallel or in series . The photovoltaic device 100 includes a plurality of solar cells connected in series to convert solar energy into electrical energy and output the solar cells. Since the photovoltaic device 100 itself employs a known technique, a detailed description thereof will be omitted.

Meanwhile, the input unit 201 according to the embodiment of the present invention may be configured such that a plurality of solar power generation devices 100 are connected in parallel. In this manner, a plurality of solar power generation apparatuses 100 are connected in parallel to supply power, so that DC power can be supplied to the inverter 300 more stably connected.

The input unit 201 may include a plurality of input terminals, a plurality of input lines, a fuse provided in each input line, a Hall sensor, and a diode.

A plurality of photovoltaic devices 100 are connected to the input terminal. For example, when the sixteenth group of photovoltaic devices 100 are configured to be connected, the input terminals include sixteen connection terminals through which the photovoltaic devices 100 are connected one by one to supply power . The input lines are respectively connected to the solar photovoltaic devices 100 through the input terminals one by one to receive the DC power output from the solar photovoltaic device 100 connected through the input terminals.

The fuse prevents an overcurrent input from the photovoltaic device 100 from being drawn. That is, when an overcurrent (overvoltage) is input, the fuse and the holder turn off the power of the input unit 201. Here, it is preferable that the holder is a structure that can be simply switched, and it is preferable that the holder is provided so as to be easy to check and replace the fuse. The fuse according to the present invention may be a fuse having a DC 1000V, 20A standard, and the holder may be a holder having a DC 690V standard.

The Hall sensor detects an input current value input from the photovoltaic device 100 flowing through the input line and outputs the detected input current value to the detection unit 230. The Hall sensor is a transistor for sensing a magnetic field and detects the strength of a magnetic field according to an input current value using a Hall effect. The detector 230 calculates the input current value using the intensity of the magnetic field corresponding to the input current value input from the hall sensor.

The diode prevents the reverse current of the direct current input from the photovoltaic device 100. In other words, it functions to prevent the inversion phenomenon of the input current. Preferably, the diode is a diode having a standard of 1000V, 50A.

The output unit 203 is connected in series to the input unit 201 and receives DC power output from the input unit 201 and outputs the DC power to the connected inverter 300.

The detection unit 230 detects and outputs an input current value and an input voltage value of each photovoltaic device 100 connected to the input unit 201 through the input unit 201, And outputs an output current value and an output voltage value output to the inverter 300 through the output unit 203 to the wireless communication unit 240 and the display unit 250.

That is, the detector 230 measures an input current value and an input voltage value for each of the photovoltaic devices 100, measures one output current value and an output voltage value output to the inverter 300, do. As described above, when the connection panel 200 for a solar power generator is configured to connect sixteen solar power generation devices 100, sixteen input current values and input voltage values are measured and displayed, respectively, and one Output current value and output voltage value are measured / displayed.

The wireless communication unit receives the input current value, the input voltage value, the output current value, and the output voltage value output from the detector 230 and transmits the input current value to the outside through wireless communication. That is, the wireless communication unit is configured to be capable of wireless data communication with a terminal (T) or a management server (not shown) of an administrator.

That is, the wireless communication unit is configured inside the connection panel 200 for each photovoltaic power generation unit, and the information obtained through the detection unit 230 or the connection unit 200 for the photovoltaic device sensed through the control unit 280 ) To the manager's terminal (T) or the management server via wireless communication.

More specifically, the wireless communication unit is a means for configuring a monitoring system for a remote or integrated solar photovoltaic power generation apparatus using the connection panel 200 for a solar power generation apparatus, Performs wireless communication with the terminal T, and transmits the detected input current value, input voltage value, output current value, and output voltage value wirelessly.

Here, the wireless Internet technology includes a wireless LAN (WLAN), a Wi-Fi, a wireless broadband (Wibro), a World Interoperability for Microwave Access (Wimax), a High Speed Downlink Packet Access, IEEE 802.16, Long Term Evolution (LTE), Wireless Mobile Broadband Service (WMBS), and the like.

The display unit 250 displays information obtained through the detection unit 230. That is, the display unit 250 displays the input current value, the input voltage value, the output current value, and the output voltage value input from the detector 230.

The display unit 250 may be configured using a known display unit such as an LED or an LCD. More preferably, the display unit 250 is configured as a touch screen, and may be configured to perform specific control functions and specific monitoring functions according to a user's touch.

The power supply unit 260 supplies driving power to the detection unit 230, the wireless communication unit, the display unit 250, the sensing unit 270, the blower 290, the input power breaker 220, and the control unit 280. The power supply unit 260 may be a switched-mode power supply (SMPS) for stable power supply.

The connection unit 200 for a solar power generator according to the present invention having the above-described structure incorporates a wireless communication unit therein to transmit information detected through the detection unit 230 to an external management server or a terminal (T) The manager can more smoothly manage the photovoltaic power generation system 1000 installed on the roof or the large area.

A surge protector (not shown) for preventing an overvoltage from being drawn into the inverter 300 connected through the output unit 203 may be provided inside the connection panel 200 for the photovoltaic device.

3, the input power circuit breaker 220 is provided between the input unit 201 and the output unit 203 and is configured to selectively cut off the power output from the input unit 201. FIG. That is, the input power circuit breaker 220 is configured to pass or block power transmitted from the input unit 201 to the output unit 203 according to a control signal of the controller 280.

4 and 5, the housing unit 210 includes an input unit 201, an output unit 203, a sensing unit 270, a blower 290, a detection unit 230, The display unit 250, the power supply unit 260 and the control unit 280 and forms an outer appearance of the connection panel 200 for the solar power generator.

The housing unit 210 includes a sensing unit 270 sensing an internal state of the housing unit 210, an air inlet 213, an air outlet, and a blower 290.

The sensing unit 270 includes a smoke sensing sensor 271 and a heat sensing sensor 273 for sensing the temperature or the heat inside the connection unit 200 for the photovoltaic device. In this way, the sensing unit 270 can detect whether or not a fire is double generated through the smoke sensor 271 and the heat sensor 273, thereby further improving the accuracy of detecting whether a fire has occurred.

The control unit 280 controls the connection for the photovoltaic device sensed by the sensing unit 270 (i.e., at least one of the smoke sensor 271 and the thermal sensor 273) It is determined whether or not a fire has occurred in the connection panel 200 for the photovoltaic apparatus based on the internal state of the panel 200.

The smoke detection sensor 271 may be disposed on the upper portion of the housing 210. This is because, when smoke is generated inside the connection panel 200 for the photovoltaic apparatus, the specific gravity of the smoke is lower than that of the air, so that the smoke rises upward from the place where the smoke is generated.

The heat sensing sensor 273 is connected to the input line of the input unit 201 and / or the input power circuit breaker 220, which have the largest heating value among the electrical components provided in the connection panel 200 for the solar power generation apparatus, As shown in Fig.

The air inlet 213 is provided at a lower portion of both side surfaces 211 of the housing part 210. The air inlet 213 is a portion into which the outside air flows into the housing part 210.

A plurality of air outlets 215 are provided on both sides 211 of the housing part 210 and the air inside the housing part 210 is discharged to the outside. The air outlet 215 is a portion where smoke due to a fire is discharged to the outside when a fire occurs inside the connection panel 200 for the photovoltaic device. Therefore, as will be described later, the smoke detection sensor 271 is preferably installed near the air outlet 215.

The blower 290 is provided inside the housing part 210, and may be provided near the air outlet 215. The blower 290 forcibly circulates the air inside the housing part 210 from the air inlet 213 toward the air outlet 215.

The blower 290 includes a driving motor 291 and a blowing fan rotated by the driving motor 291.

Accordingly, when the blower 290 is driven, external air is introduced into the connection panel 200 for the photovoltaic device through the air inlet 213 and then discharged to the outside through the air outlet 215. That is, the blower 290 forcibly forms a flow path of air and / or smoke inside the connection panel 200 for the photovoltaic device.

By providing the blower 290 in this way, it is possible to shorten the smoke detection time of the smoke detection sensor 271 by quickly introducing the smoke formed when the fire occurs to the smoke detection sensor 271, It is possible to promptly determine that the fire in the connection panel 200 for the photovoltaic power generation apparatus is expanded to the second large-sized fire. At the same time, by generating the forced convection inside the connection panel 200 for the solar power generation apparatus by driving the blowing fan, a heating phenomenon is generated from the electric components provided in the connection panel 200 for the solar power generation apparatus The electrical components can be air-cooled by forced convection, so that the connection panel 200 for a photovoltaic device can be prevented from being fired due to overheating of the electric components.

The control unit 280 may determine whether a fire has occurred in the connection panel 200 for the solar power generation apparatus 200 by using both the smoke detection sensor 271 and the heat detection sensor 273. However, For clarity, a control algorithm for determining whether a fire has occurred by the controller 280 using the smoke detection sensor 271 and a subsequent control algorithm for the controller 280 when a fire occurs will be described in detail.

First, the smoke detection sensor 271 detects whether smoke is present in the connection unit 200 for the photovoltaic device in real time. For example, the smoke detection sensor 271 is composed of a light receiving element and a light emitting element. Normally, the light emitted from the light emitting element is incident on the light receiving element at all times. However, And detects whether or not smoke is generated by using the fact that the amount of light incident on the light receiving element changes due to the smoke or light is not incident on the light receiving element at all. Of course, this is an example and the present invention is not limited thereto.

The smoke detection sensor 271 transmits this fact to the control unit 280 when detecting the smoke.

At this time, the control unit 280 drives the blower 290 in real time or at a predetermined cycle to generate forced convection inside the connection panel 200 for the photovoltaic device, 200 or the smoke generated during a fire is directed toward the air outlet 215 and / or the smoke detection sensor 271.

When the smoke is detected through the smoke detection sensor 271, the control unit 280 determines that a fire has occurred inside the connection panel 200 for the photovoltaic device.

The control unit 280 may control the operation of the photovoltaic device connection panel 200 only when the smoke detection time is equal to or longer than a preset time when the smoke detection sensor 271 detects smoke, Can be determined to have occurred. This is because the electric parts such as the input unit 201, the input power circuit breaker 220 and the output unit 203 generate smoke due to temporary overheating and then the inside of the connection panel 200 for the photovoltaic power generation device is quenched, This is because it is possible not to lead to fire, but it can be canceled. Also, it is because the manager is not able to recognize the management of the fire until the end of the fire.

That is, the control unit 280 determines whether or not the fire has occurred by considering the control parameters of the two conditions, that is, the smoke detection within the connection unit 200 for the photovoltaic power generation unit and the lapse of a predetermined time of the smoke detection time, It is possible to more accurately determine whether or not the fire has occurred, and at the same time, the fire management efficiency of the manager can be improved.

When the control unit 280 determines that a fire has occurred in the connection panel 200 for the photovoltaic device, the control unit 280 controls the input unit 201 to prevent the power from being transmitted to the output unit 203 from the input unit 201, The breaker can be controlled. As a result, further expansion of the fire can be minimized.

If the control unit 280 determines that a fire has occurred in the housing unit 210, the control unit 280 determines whether a fire has occurred in the connection unit 200 for the photovoltaic device through the wireless communication unit 240, To the terminal (T) of the manager.

The control unit 280 may determine whether a fire has occurred in the connection panel 200 for the solar power generation apparatus 200 by using both the smoke detection sensor 271 and the heat detection sensor 273. However, For the sake of clarity, a control algorithm for determining whether a fire has occurred in the control unit 280 using the thermal sensor 273 and a subsequent control algorithm for the fire controller 280 will be described in detail.

The thermal sensor 273 may be disposed on one side of the input unit 201 and / or the input power breaker 220 or may be arranged to contact the input unit 201 and / or the input power breaker 220, And detects the internal temperature and the heat generation of the connection unit 200 for power generation apparatus.

The thermal sensor 273 transmits the sensed temperature value to the controller 280.

When the control unit 280 detects that the internal temperature of the connection panel 200 for the photovoltaic device is changed to a predetermined first temperature change value or more through the heat sensor 273, It is judged that a fire has occurred inside the power generation unit connection panel 200.

Preferably, when the control unit 280 detects that the internal temperature of the connection panel 200 for the photovoltaic device is changed by a predetermined first temperature change value or more through the heat sensor 273 It can be determined that a fire has occurred inside the connection panel 200 for the PV generator only when the time that has been changed to the predetermined first temperature change value or more is longer than a preset time. This is because temporary overheating occurs in electrical components of the input unit 201, the input power circuit breaker 220, the output unit 203, and the like, and the inside of the connection panel 200 for the photovoltaic power generation device is rapidly cooled, This is because it is possible for the administrator to be aware of such a fire until the end of the fire.

That is, the control unit 280 considers the control variables of the two conditions, that is, the temperature change inside the connection panel 200 for the photovoltaic power generation device exceeds the predetermined value and the predetermined time elapses of the heat sensing time, It is possible to more accurately determine whether a fire has occurred or not, and at the same time, it is possible to improve the manager's fire management efficiency.

Preferably, the control unit 280 controls the temperature of the connection panel 200 for the photovoltaic device through the heat sensing sensor 273 to a predetermined second temperature variation A blower 290 provided inside the connection panel 200 for the photovoltaic device to forcibly circulate the inside air of the connection panel 200 for the photovoltaic device to the outside, Can be driven. That is, the control unit 280 may air-cool the inside of the connection panel 200 for the photovoltaic device when it is in an internal overheated state before it is determined that it is a fire, so that the fire can be prevented in advance. At this time, if the control unit 280 continuously drives the blower 290, the controller 280 may control the blower 290 to increase the air volume of the blower 290.

When the control unit 280 determines that a fire has occurred in the connection panel 200 for the photovoltaic device, the control unit 280 controls the input unit 201 to prevent the power from being transmitted to the output unit 203 from the input unit 201, The breaker can be controlled.

When the control unit 280 determines that a fire has occurred in the housing unit 210, the control unit 280 determines whether a fire has occurred in the connection unit 200 for the PV system through the wireless communication unit 240 And transmit the fact to the terminal (T) of the manager.

6 is a schematic partial enlarged internal front view of a connection panel 200 for a solar power generator according to another embodiment of the present invention.

As shown in FIG. 6, the connection panel 200 for a photovoltaic device according to an embodiment of the present invention includes the connection panel 200 for a photovoltaic device according to an embodiment of the present invention Technical features and elements of the present invention will be described in detail below with reference to the accompanying drawings.

6, the housing part 210 of the connection panel 200 for a photovoltaic power generation apparatus according to another embodiment of the present invention includes a housing part 210, An air inlet 213 through which external air flows into the inside of the casing 210; An air outlet 215 through which the air inside the housing part 210 is discharged from upper portions of both side surfaces 211 of the housing part 210; A partitioning part 216 dividing the inside of the housing part 210 into an upper accommodating space S1 and a sewage receiving space; And a blower 290 accommodated in the partition 216.

The partitioning part 216 is formed in the upper part of the housing part 210 with respect to the lowest part of the portion where the air outlet 215 is formed on both side surfaces 211 of the housing part 210, ) And the lower portion into the lower accommodation space S2. The partitioning part 216 has an inlet opening 217 for communicating the upper housing space S1 and the lower housing space S2 from the center.

In the upper accommodation space S1, a blower 290 and a smoke detection sensor 271 are installed as described later.

An input unit 201, an output unit 203, a thermal sensor 273, a detection unit 230, a wireless communication unit 240, a display unit 250, A power supply unit 260, and a control unit 280 are accommodated.

The partitioning part 216 guides a flow path of the air flow generated when the blower 290, which will be described later, is driven.

The blower 290 is accommodated in the upper accommodation space S1 and disposed in the inflow opening 217. [ The blower 290 is configured to forcibly circulate the air inside the housing part 210 from the air inlet 213 to the air outlet 215.

The blower 290 includes a driving motor 291 fixedly accommodated in the upper accommodation space S1 and a centrifugal fan 293 rotated by the driving motor 291 and disposed in the inflow opening 217. [ and a centrifugal fan.

The centrifugal fan 293 is installed in the upper accommodation space S1 such that the air inlet portion coincides with the inflow opening 217. [ The centrifugal fan 293 sucks air in the lower accommodation space through the inflow opening and forcibly circulates the air in the outward directions on both sides of the upper accommodation space to discharge the air toward the air outlet.

In the upper accommodation space S1, the smoke detection sensor 271 is installed. Specifically, the smoke detection sensor 271 is provided on the air flow path formed by the rotation of the centrifugal fan 293 in the upper accommodation space S1.

Since the blower 290 includes the partitioning part 216 and / or the centrifugal fan 293, the flow path of the air inside the connection panel 200 for the photovoltaic device can be restricted, The smoke detection sensor 271 is provided on the flow path of the restricted air and / or the smoke, so that the smoke concentration becomes thin due to the diffusion phenomenon even though the smoke is generated, It is possible to prevent malfunction that is not detected by the fire detection unit 271, thereby further improving the fire occurrence detection accuracy. In the present invention, since the blower 290 includes the partitioning part 216 and / or the centrifugal fan 293, a total of two blowers (not shown) are provided in front of the air outlet 215 on both side surfaces 211 of the housing part 210 Only one blower 290 is provided on the upper part of the housing part 210 without installing the blower 290 so that the same effects as those of the two blowers 290 can be obtained. Can be reduced.

The smoke detection sensor 271 may be provided on both sides of the centrifugal fan 293 in the upper housing space S1 of the housing part 210. [ That is, the smoke detection sensor 271 may be located in the vicinity of the centrifugal fan 293 (or the air discharge portion of the centrifugal fan 293) in the upper accommodation space S1 of the housing part 210 . This is because one side or vicinity of the centrifugal fan 293 is located at a position where the concentration of smoke is highest before the diffusion phenomenon occurs in the upper accommodation space S1 when smoke is generated and as a result, It is possible to prevent the malfunction that is not detected by the smoke detection sensor 271 due to the dilution of the smoke concentration due to the diffusion phenomenon in the inside of the room S1, thereby further improving the fire occurrence detection accuracy.

According to the present invention, it is possible to promptly determine whether or not a fire has occurred in the connection panel for a photovoltaic power generation apparatus through the sensing unit, and can quickly transmit the fact of occurrence of fire when a fire occurs to the administrator. It is possible to quickly prevent the spread of the fire inside the connection panel and spreading into the second large-sized fire.

In addition, the present invention can accurately determine whether or not a fire has occurred in the connection panel for a solar power generation device, thereby improving the fire management efficiency of the connection panel for the photovoltaic power generation device of the management company, It is possible to quickly prevent the spread of the fire inside the semi-large-sized fire.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, . ≪ / RTI > Accordingly, such modifications are deemed to be within the scope of the present invention, and the scope of the present invention should be determined by the following claims.

1000: Solar power system
100: Photovoltaic device
200: Connection board for solar power generation device
300: Inverter
400: AC switchboard
500: Power system
600: Load
700: information number group

Claims (15)

A connecting panel for a photovoltaic power generation apparatus that receives power generated from at least one solar photovoltaic device and transmits the power to an inverter,
An input unit configured to receive power generated and output from the at least one solar cell generator;
An output unit electrically connected to the input unit for receiving a direct current output from the input unit and outputting the direct current to an electrically connected inverter;
An input power breaker provided between the input unit and the output unit for selectively interrupting power output from the input unit;
A sensing unit for sensing an internal state of the connection unit for the photovoltaic device;
A control unit for controlling the input unit, the output unit, the input power breaker, and the sensing unit;
And a housing unit that houses and supports the input unit, the output unit, the input power breaker, the sensing unit, and the control unit, and forms an outer appearance of the connection unit for the photovoltaic device,
Wherein the control unit determines whether or not a fire has occurred in the housing unit based on an internal state of the connection unit for the photovoltaic device detected by the sensing unit. The method according to claim 1,
Wherein the sensing unit includes a smoke detection sensor,
Wherein the smoke detection sensor is provided at an upper portion inside the housing portion. 3. The method of claim 2,
The housing part,
An air inlet through which external air flows into the housing portion from the lower portions of both side surfaces of the housing portion;
An air outlet through which air in the housing part is discharged from upper portions of both side surfaces of the housing part;
And a blower installed in the housing part for forcibly circulating the air inside the housing part from the air inlet toward the air outlet. 3. The method of claim 2,
The housing part,
An air inlet through which external air flows into the housing portion from the lower portions of both side surfaces of the housing portion;
An air outlet through which air in the housing part is discharged from upper portions of both side surfaces of the housing part;
A partition part dividing the inside of the housing part into the upper accommodating space and the lower accommodating space with respect to the lowest part of the portion where the air outlet is formed in the both side surfaces of the housing part and having the inflow opening at the center;
And a blower installed in the inflow opening in the upper accommodating space for forcibly circulating the air inside the housing part from the air inlet toward the air outlet. 5. The method of claim 4,
Wherein the blower comprises a drive motor and a centrifugal fan rotated by the drive motor and disposed in the inflow opening. 6. The method of claim 5,
Wherein the smoke sensing sensor is provided on both sides of the centrifugal fan in an upper accommodation space of the housing part. 3. The method of claim 2,
Wherein the control unit determines that a fire has occurred in the connection panel for the photovoltaic device when smoke is detected through the smoke detection sensor. 8. The method of claim 7,
Wherein the control unit determines that a fire has occurred in the connecting panel for the photovoltaic power generation device only when the smoke detection time is equal to or longer than a preset time when the smoke detection sensor detects smoke, Connection board. The method according to claim 1,
Wherein the sensing unit includes a heat sensing sensor for sensing temperature or heat inside the connection unit for the photovoltaic device. 10. The method of claim 9,
Wherein the thermal sensor is provided at one side of at least one of the input unit and the input power circuit breaker. 10. The method of claim 9,
The control unit determines that a fire has occurred in the connection panel for the photovoltaic power generation device when the internal temperature of the connection panel for the photovoltaic power generation device is detected to change by a predetermined first temperature change value or more through the heat detection sensor And the connection terminal for the photovoltaic power generation device. 12. The method of claim 11,
Wherein when the internal temperature of the connection unit for the photovoltaic power generation unit is detected by the heat sensing sensor to be greater than or equal to a predetermined second temperature change value smaller than the predetermined first temperature change value, And a blower provided in the connection panel for the photovoltaic device is driven so as to forcibly circulate the inside air of the connection unit for the device to the outside. 12. The method of claim 11,
Wherein the control unit detects a time when the internal temperature of the connection unit for the photovoltaic device is changed through the heat sensing sensor to a value equal to or larger than a predetermined first temperature change value, And judging that a fire has occurred in the connection panel for the photovoltaic power generation device only when the time is longer than a predetermined time. The method according to claim 1,
Wherein the control unit controls the input power source breaker to prevent power from being transmitted from the input unit to the output unit when it is determined that a fire has occurred in the connection unit for the photovoltaic device. . The method according to claim 1,
Wherein the connection unit for the photovoltaic power generation device further comprises a wireless communication unit capable of data communication with the terminal of the manager of the connection unit for the photovoltaic power generation device,
Wherein the control unit transmits a fire occurrence to the terminal of the manager through the wireless communication unit when it is determined that a fire has occurred in the housing unit. .

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