KR101695976B1 - Photovoltaic solar connection board with function of detection for arc - Google Patents

Abstract

The present invention relates to a photovoltaic system junction box comprising a function for detecting arc generation when arc is generated therein. The photovoltaic system junction box comprising an arc detection function according to the present invention to achieve the objective includes: an input part receiving power which is generated and outputted from a solar cell array; an output part which is electrically connected to the input part to be inputted with a DC current outputted from the input part and then outputs the DC current to an inverter which is electrically connected; a circuit breaker which is prepared between the input part and the output part, and selectively blocks the power outputted from the input part; a detection part detecting arc, a current, a voltage, and the temperature of the photovoltaic system junction box, detecting the approach of a user, and detecting the door opening/closing; and a controller generating and outputting a control signal capable of transmitting a message to a mobile device in case a detected value detected by the detection part approaches or exceeds a set value. The detection part is configured to detect arc generated in the photovoltaic system junction box and a power line supplying the power generated in the solar cell array to the photovoltaic system junction box.

Description

[0001] PHOTOVOLTAIC SOLAR CONNECTION BOARD WITH FUNCTION OF DETECTION FOR ARC [0002]

The present invention relates to a photovoltaic panel equipped with an arc detection function, and more particularly, to a photovoltaic panel having an arc detection function capable of detecting an arc generated in a solar cell array and a power line, To a solar light connection panel equipped with a detection function.

A photovoltaic power generation system converts light energy into electric energy. The solar power generation system includes a solar panel (module) that converts light energy into electric energy, and an inverter that converts the DC power generated by the solar panel into AC power.

The structure of the photovoltaic power generation system will be described in more detail. The photovoltaic power generation system includes a photovoltaic module for supplying a direct current power corresponding to received sunlight, a solar cell array connected in series with the solar cell module, A photovoltaic connection panel that facilitates wiring and performs various protection functions, an inverter that converts DC power generated from the solar cell array to AC power, and a load that consumes the generated power.

The photovoltaic connection panel is configured to minimize a failure range when a failure occurs in the solar cell array to prevent an accident, and to find a high advantage. In addition, according to array configuration and capacity, it is possible to connect parallel array of appropriate arrays, connect array cables to inverters, and arrange connection of many solar array easily. do. Such a connection section includes a DC output switch, a lightning prevention element, a reverse current prevention element, a terminal block, and a fuse (or a switch), and an output terminal switch for measuring insulation resistance or checking a short circuit current periodically is also provided.

Particularly, the photovoltaic module of the photovoltaic power generation system prevents the circuit from being damaged by an unexpected sudden voltage or current, which is caused by an electric shock, and prevents the imbalance of the power generation characteristics of the condenser due to other factors such as the environmental change Various protection devices are provided. The protection device includes reverse voltage prevention means including a reverse voltage prevention diode for protecting a circuit at an input / output terminal by interrupting a current flowing in a reverse direction, and a control unit for detecting a power voltage and a current generated through the solar panel, A voltage and current measurement sensor for monitoring whether the overcurrent is cut off, and an overcurrent protection fuse for protecting the circuit by cutting off the overcurrent.

On the other hand, as an apparatus for detecting an arc, Japanese Patent Application Laid-Open No. 10-1397946 discloses an arc detecting apparatus equipped with an optical fiber sensor.

The above-described technique reflects an arc detection optical signal transmitted through the optical fiber cable and transmits an arc-detected optical signal and an arc-converted optical signal. When the arc is detected, An arc light signal received through a side surface of the optical fiber cable and an arc light signal reflected by the lens; and a lens unit having a reflection element for reflecting an optical signal for arc detection, And an optical detecting means for comparing the optical signal for arc detection and outputting an arc generation signal with the difference signal.

In addition, Japanese Patent Application Laid-Open No. 10-1573234 discloses an optical fiber arc detection sensor by a light conversion method in a switchboard.

An infrared optical lens for selectively transmitting infrared rays generated by an arc in a switchboard and outputting the infrared rays; An infrared ray-responsive phosphor that converts infrared rays output from the infrared optical lens into visible rays and outputs the visible rays; An optical fiber for transmitting visible light output from the infrared-ray-responsive phosphor to an arc detection circuit; And an infrared LED for amplifying and outputting visible light output from the infrared-ray-responsive phosphor.

However, although the above-described conventional techniques may have some effect on the time and accuracy of detecting an arc, it takes a few tens of milliseconds to verify the detected arc and shut off the circuit. Here, the arc is accompanied by a high-intensity ray, which is defined as arc.

Actually, when an arc occurs in the photovoltaic module, the temperature and pressure reach the maximum value within 15 ~ 25 ms, and the equipment inside the photovoltaic panel is burned out. Is generated.

In addition, as the most frequent accident occurring in the photovoltaic module due to the arc, there is a problem that the longer the duration is, the more the internal fire occurs. If the user is exposed to the arc, serious injury to the person may occur.

KR 10-1397946 B1 (Registered May 05, 2014) KR 10-1573234 B1 (Registered Nov. 25, 2015)

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems of the prior art, and it is an object of the present invention to solve the problem of the prior art, And an arc detection function capable of preventing secondary damage and preventing the secondary damage.

Also, a photovoltaic connection unit having an arc detection function capable of protecting a user by tripping a circuit breaker due to arc generation according to proximity of a user, and displaying an access range of the user when an arc occurs or an accident is provided I have to.

According to an aspect of the present invention, there is provided a photovoltaic module including an arc detection module including an input unit for receiving power generated and output from a solar cell array; 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; A blocking unit provided between the input unit and the output unit for selectively blocking power output from the input unit; A detector for detecting an arc, a current, a voltage, a temperature, a user's approach, and whether the door is open or closed; And a controller for generating and outputting a control signal capable of sending a message to the mobile device when the detected value detected by the detecting unit approaches or exceeds a set value, And a power line for supplying power generated by the battery array to the solar cell connecting unit and an arc generated inside the solar cell connecting unit.

Here, the detection unit may include an arc detection module for detecting an arc generated in the solar cell module; A current detecting module for detecting a current of a power line drawn into the solar cell connecting unit and a current supplied to the load; A voltage detection module for detecting a voltage applied to a power line drawn into the solar cell module and a voltage applied to the load; A temperature detection module for detecting a temperature inside the solar cell module; A human body detecting module for detecting a user approaching the photovoltaic module or a user moving within a detection range; And a door detection module for detecting the open and closed states of doors provided in the solar light connection panel.

The arc detection module may further comprise an optical fiber including a first optical fiber disposed to pass through the internal main power device of the solar cell connection unit and a second optical fiber arranged to pass through the power line disposed between the solar cell module and the connection half ; An arc receiving unit provided in the optical fiber and arranged at a predetermined interval, and causing the generated arc to enter into the optical fiber; An optical transmission unit for transmitting an optical signal to the optical fiber; A light receiving unit for receiving an optical signal transmitted from the optical transmitting unit and input through the optical fiber; And an optical signal processing unit for comparing and analyzing the optical signal transmitted from the optical transmitting unit and the optical signal received by the optical receiving unit to detect whether the transmitted optical signal has been converted.

The arc receiving unit may include a scratch formed on an outer surface of the optical fiber to have a predetermined width in the longitudinal direction; And an ultraviolet absorber provided outside the scratches.

According to the present invention, there is an advantage that an optical fiber arc sensor can detect an arc generated in a solar cell array and a power line as well as inside a solar cell.

Further, the safety of the user can be ensured by the information displayed on the display unit, and there is an advantage that the access by the user can be detected and the human accident can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a general configuration diagram of a photovoltaic power generation system to which a photovoltaic module with an arc detection function according to the present invention is applied. FIG.
2 is a configuration diagram of a solar light connecting panel equipped with an arc detecting function according to the present invention.
3 is a block diagram of a solar photovoltaic module equipped with an arc detection function according to the present invention;
FIG. 4 is a block diagram of a detection unit in a photovoltaic panel equipped with an arc detection function according to the present invention; FIG.
5 is a configuration diagram of an arc detecting unit using a loop sensor in a solar light connecting module equipped with an arc detecting function according to the present invention.
6 is a configuration diagram of an arc receiving unit provided in an optical fiber in a photovoltaic panel equipped with an arc detecting function according to the present invention.
7 and 8 are a configuration diagram and a circuit diagram, respectively, of an optical transmission unit in a solar light connecting module provided with an arc detecting function according to the present invention.
9 and 10 are a configuration diagram and a circuit diagram, respectively, of a light receiving unit in a photovoltaic panel equipped with an arc detecting function according to the present invention.
11 is a circuit diagram of a point sensor in a solar light connecting module equipped with an arc detecting function according to the present invention.

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

The present invention relates to a photovoltaic panel equipped with an arc detection function capable of detecting an arc generated in a solar cell array and a power line as well as an arc generated in a solar photovoltaic module.

FIG. 1 is a diagram showing the overall configuration of a photovoltaic power generation system to which a photovoltaic module having an arc detection function according to the present invention is applied.

1, the solar power generation system includes a solar cell array 1, a solar light connecting panel 2, an inverter 3, a water tank 4, and a load.

The solar cell array 1 is for generating electricity by collecting sunlight incident from the sun, and usually silicon and a composite material are mainly used. Specifically, the solar cell array 1 uses a p-type semiconductor and an n-type semiconductor bonded together, and utilizes a photoelectric effect to generate electricity by receiving sunlight.

Most of the solar cell arrays 1 are formed of large-area P-N junction diodes, and the electromotive force generated at the opposite ends of the P-N junction diode is connected to an external circuit. The minimum unit of the solar cell array 1 is referred to as a cell. Actually, a plurality of solar cell cells are used. In other words, since the required voltage used in the home is several tens to several hundreds of volts or more, the voltage from one cell is very small, about 0.5 V, so that a plurality of unit solar cells can be connected in series or parallel . In addition, when the solar cell array 1 is used outdoors, it is exposed to various harsh environments. Therefore, a plurality of cells are used as a package in order to protect a plurality of cells connected with a necessary unit capacity in a harsh environment.

The photovoltaic panel 2 collects the direct current produced from the solar cell array 1 and outputs the collected direct current to the inverter 3. The photovoltaic panel 2 receives the direct current power generated from the solar cell array 1, (Not shown) composed of a switch for a switch, an output terminal or a molded case circuit breaker (MCCB), a bus bar or a terminal block, and a magnetic switch, a diode and a power fuse, a lightning protection element (SPD, ZNR) ). In addition, the photovoltaic connection panel 2 may be provided with an output terminal switch for insulation resistance measurement or periodic short-circuit current confirmation.

On the other hand, the photovoltaic connection panel 2 is normally supplied with a magnetic switch of the main circuit device, and the magnetic switch of the spare circuit device is opened, and DC power is supplied through the diode of the main circuit device and the fuse for power do. At this time, if an abnormality occurs in the solar cell module, the magnetic switch of the main circuit device in which the abnormality occurs in the field is opened, the magnetic switch of the spare circuit device is immediately turned on, This allows the continuous development through the fuse.

The inverter 3 integrates the DC power received from the solar cell array 1 into one DC power and converts it into AC power for use as commercial power. The AC power output from the inverter (3) is supplied to the load of the customer through the water tank (4).

FIG. 2 is a block diagram of a photovoltaic panel with an arc detection function according to the present invention, and FIG. 3 is a block diagram illustrating a photovoltaic panel with an arc detection function according to the present invention.

2 and 3, a photovoltaic panel equipped with an arc detection function according to the present invention includes an input unit 10, an output unit 20, a blocking unit 30, a detection unit 40, a controller (not shown) 50, a warning section 60, a display section 70, and a communication section 80.

The input unit 10 receives electric power produced and output from the solar cell array and the output unit 20 is electrically connected to the input unit 10 to receive a direct current output from the input unit 10 And outputs it to the electrically connected inverter (3).

The blocking unit 30 is provided between the input unit 10 and the output unit 20 and selectively blocks non-ideal current flow of the power output from the input unit 10. Here, the non-ideal current flow largely includes an overload and a short circuit in the circuit. When the current exceeding the rated current flows, the blocking unit 30 blocks the current flow to prevent the accident.

When a configuration capable of shutting off the power by the trip signal is provided in the cut-off portion 30 in accordance with the design conditions, it is also tripped by the control of the controller 50 based on the data detected by the detection portion 40, So that it is possible to protect the power device installed on the secondary side of the cut-off portion 30 by blocking the supply to the load.

The detecting unit 40 detects data of the solar cell connecting unit 2 and detects an arc, a current, a voltage, a temperature, a user's approach, and whether the door is open or closed.

FIG. 4 is a view illustrating a configuration of a detection unit in a photovoltaic panel equipped with an arc detection function according to the present invention.

4, the detection unit 40 includes an arc detection module 110, a current detection module 120, a voltage detection module 130, a temperature detection module 140, a human body detection module 150, And a detection module 160.

The arc detection module 110 detects the arc generated in the photovoltaic array, the power line supplying the photovoltaic connection module and the arc generated in the photovoltaic module, 110a and a point sensor 110b.

At this time, the loop sensor 110a includes a first optical fiber arranged to pass through an internal main power device of the photovoltaic connection module and a second optical fiber arranged to pass through a power line disposed between the photovoltaic module and the connection half An optical transmission unit for transmitting a basic optical signal to the optical fiber, and a light receiving unit for receiving an optical signal transmitted through the optical fiber after being transmitted from the optical transmission unit.

At this time, when an arc is inputted to the basic optical signal propagating through the optical fiber, the basic optical signal transmitted from the optical transmission unit is converted in characteristics, and the converted optical signal is input to the optical receiving unit.

If the optical signal converted by the light receiving unit is input, it can be determined that an arc is generated. The loop sensor 110a will be described later.

The current detection module 120 detects a current of a power line drawn into the solar cell module and a current supplied to the load. The current detection module 120 may be configured to detect a reduced current at a constant rate using CT (instrumental current transformer).

The voltage detection module 130 detects a voltage applied to the power line drawn into the solar cell module and a voltage applied to the load. The voltage detection module 130 may be configured to detect a reduced voltage at a constant rate using a PT (meter transformer).

The temperature detection module 140 detects the temperature inside the solar cell module. According to the design conditions, the temperature detection module 140 may be configured to detect the outside air temperature outside the solar cell module.

The human body detection module 150 detects a user accessing the photovoltaic module or a user moving within the detection range. Here, the human body detection module 150 may include a microwave sensor.

The door detection module 160 is configured to detect the open and closed states of doors provided in the solar connection unit. The door detection module 160 may include a contact switch that is turned on / off when the door is opened and closed, and a conversion unit that converts the output signal of the contact switch into a logical value.

The controller 50 is configured to send a message to the user's mobile device when the detected value detected by the detecting unit 40 approaches or exceeds a set value or to generate and output a control signal to indicate the occurrence of an arc in the display unit . At this time, if the shutoff unit 30 is provided with a power cutoff device according to a trip signal, the controller 50 may be configured to generate a trip signal for operating the breaker.

That is, the controller 50 controls the arc detecting module 110 to detect an arc signal detected by the arc detecting module 110, a current signal detected by the current detecting module 120, a voltage signal detected by the voltage detecting module 130, 140, the human body detection signal detected by the human body detection module 150, and the door opening / closing signal detected by the door detection module 160, and compares the value corresponding to each signal with the set value, And outputs a warning signal if it is determined that the set value is close to the set value.

For example, when the arc signal is received by the converted optical signal in response to an arc occurrence, when it is determined that an arc is generated as compared with the set arc signal, a trip signal for exciting the breaker to the breaker 30 is outputted And to protect the secondary side power device of the blocking portion.

The controller 50 may be configured to sequentially activate each module included in the detector 40 and sequentially receive signals from the respective modules included in the detector 40. [ The controller 50 is connected to the respective modules (the arc detection module 110, the current detection module 120, the voltage detection module 130, the temperature detection module 140, The module 150 and the door detection module 160) is an analog signal, the AD conversion module may convert the analog signal into a digital signal and output the digital signal.

In addition, the controller 50 may be provided with a memory module for storing the received signals.

FIG. 5 is a block diagram of a loop sensor among arc detection modules in a photovoltaic module with an arc detection function according to the present invention.

5, the loop sensor 110a includes an optical fiber 111, a plurality of arc receiving units 112 installed on the optical fiber 111, a light transmitting unit 113, a light receiving unit 114, And an optical signal processing unit (115).

The optical fiber 111 is arranged to pass through a first optical fiber arranged to pass through an internal main power device of the photovoltaic connection module and a power line arranged between the photovoltaic array 10 and the photovoltaic connection panel 2 And may include a second optical fiber.

At this time, the first optical fiber and the second optical fiber may be composed of one strand, but may be composed of a plurality of according to design conditions. For example, if a plurality of optical fibers 111 are installed for faster detection, the optical fiber can be made relatively shorter than a single optical fiber, and the detection speed of the arc can be relatively increased. However, since a plurality of optical fibers are provided, the computation algorithm can be complicated.

When the refractive index of the core is made relatively higher than the refractive index of the clad, the light entering the core repeats the total reflection at the boundary between the core and the clad. The optical fiber is composed of a core at the center and a cladding surrounding the core. And proceeds inside the core.

The loop sensor 110a uses the principle that the characteristics (light intensity, frequency, phase, and polarization) of light traveling in the optical fiber 111 are changed by an external physical quantity. And an arc receiving unit 112 for causing an arc generated by the arc to enter the inside of the optical fiber.

6 is a configuration diagram of an arc receiving unit provided in an optical fiber in a solar light connecting module equipped with an arc detecting function according to the present invention.

Referring to FIG. 6, the arc receiving unit 112 includes an arc receiving unit 112 for receiving an arc into the optical fiber 111, a scratch 112a formed at a predetermined width in the longitudinal direction on the outer surface of the optical fiber 111, And an ultraviolet absorber 112b provided outside the scratch 112a.

Of course, an arc can be incident on the entire installed optical fiber 111. That is, an arc generated through the optical fiber 111 itself as well as the arc receiving unit 112 including the scratch 112a can be introduced into the arc receiving unit 112. [ However, the arc receiving unit 112 may be provided to facilitate the inflow (absorption) of the arc into the optical fiber 111 when an arc occurs.

On the other hand, the light incident on the core of the optical fiber 111 is generated in a process of loss. The loss of optical fiber is largely composed of intrinsic loss, external loss and material loss.

The intrinsic loss in the loss is an absorption loss caused by heat of the optical fiber by reacting with ray-light scattering loss, material inhomogeneity and OH group, etc., in which light propagating in the optical fiber is scattered by a minute refractive index shake in the optical fiber, And structural loss due to unevenness at the interface.

The external loss is caused by microbending loss caused by micro-periodic bending of the optical fiber axis due to side pressure applied to the optical fiber, and deflection caused by the deflection of the optical fiber due to the angle of light incident at the boundary between the core and the cladding And connection loss occurring at the optical fiber connection point.

The intrinsic loss and the external loss in the loss can be reduced to some extent by the manufacturing technique and arrangement of the optical fiber. However, since the scratch 112a is formed in the arc receiving unit 112 included in the optical fiber 111, 112a may be generated. That is, when the incident light advances along the optical fiber core and enters the scratch 112a, it is impossible to avoid a light loss of a part of the light emitted to the outside through the scratch 112a. In addition, a loss due to the scratch 112a is generated in the same manner as the changed light in which light incident on the core is physically changed.

Accordingly, in the present invention, the ultraviolet absorbent 112b may be coated on the outer surface of the scratch 112a to facilitate the absorption of ultraviolet rays generated by the arc.

Examples of the ultraviolet absorber include benzophenone (ultraviolet absorption range: 300 to 380 nm), benzotriazole (ultraviolet absorption range: 300 to 385 nm), salicylic acid (ultraviolet absorption range: (Ultraviolet absorption range 260 to 340 nm), acrylonitrile series (ultraviolet absorption range 290 to 400 nm), organic nickel compounds and benzoic acid series, and one selected from the above classes can be applied have.

In addition, a portion to which the ultraviolet absorber is applied may be set to a position where the optical fiber is bent and an arc is frequently generated. In order to prevent deterioration and evaporation of the applied ultraviolet absorber, coating may be performed outside the ultraviolet absorber have.

Accordingly, the incident arc can be guided to be transmitted to the core, and the light traveling in the core can be reflected to minimize the optical loss.

The optical transmitting unit 113 performs a function of transmitting a basic optical signal to the optical fiber 111. FIGS. 7 and 8 are schematic diagrams for explaining the operation of the photodetector of FIG. Fig. 8 is a diagram showing a configuration and a circuit diagram for a transmitting unit. Fig.

7 and 8, when the driving signals of the laser light diodes D9 and LD are input through the terminal CON4, the operation state indicating LED D10 and the laser diode D10 are turned on through the resistors R16 and R17, D9. According to the supply of the operating current, the LED D10 for operating state is turned on to display the operating state of the optical transmitter, and the laser diode D9 transmits the optical signal corresponding to the operating current to the optical fiber 111 .

The light receiving unit 114 functions to receive an optical signal transmitted through the optical fiber 111 after being transmitted from the optical transmitting unit 113. FIG. 9 and FIG. Fig. 2 is a diagram showing a configuration and a circuit diagram of a light receiving unit in a solar light connecting module provided with an arc detecting function according to the present invention; Fig.

9 and 10, an arc passing through the ultraviolet absorber 112b and the scratch 1121a converts an optical signal propagating through the optical fiber 111, and the converted optical signal passes through a photodiode PD And amplified by the current-voltage conversion and amplification unit to output the PD amplified signal. The amplification state of the current-voltage conversion and amplification unit is controlled by a power stabilization circuit and a sensitivity adjustment circuit according to a pulse-type power supply such as PWM (Pulse Width Modulation).

The optical signal processing unit 115 compares and analyzes the optical signal transmitted from the optical transmitting unit 113 and the optical signal received from the optical receiving unit 114 to detect whether the transmitted optical signal has been converted.

11 is a circuit diagram of a point sensor in an arc detection module in a solar cell module equipped with an arc detection function according to the present invention.

The point sensor 11b detects arcs generated in the range of the hemisphere, and is configured to detect an arc of 3KA generated within the hemisphere range of about 2m.

11, which includes a sensor controller, an operation diode D6, a photodiode D7, an op-amp and an output transistor Q2, and includes an operation diode D6 and a photodiode D7, an amplifier circuit composed of an op-amp and an output transistor Q2 is configured in parallel.

In a state where an arc is not generated, a current is applied to the operation diode D6, and the operation diode D6 is flickered by the applied current. At this time, the current applied from the sensor controller is all applied to the operation diode D6, and the operation diode D6 flickers at a high speed.

When an arc is generated, an arc is incident on the photodiode D7 of the amplifying circuit, and the photodiode D7 is conducted in proportion to the magnitude of the incident arc. As a result of the conduction, As shown in Fig. When the magnitude of the potential difference applied to the op-amp is increased to a predetermined value or more, the output transistor Q2 is operated and the current is applied to the amplification circuit by the operation of the output transistor Q2.

At this time, a part of the current applied to the operating diode D6 is applied to the amplifying circuit as the operating diode D6 and the amplifying circuit are connected in parallel, and the operating diode D6 is relatively slow And blinks at the speed.

In such a configuration, when the operation diode D6 of the point sensor 111b does not flicker, it can be judged that there is a problem of the connection or the power supply.

A plurality of point sensors 111b may be provided at points where arc generation is likely to occur.

The alarm unit 60 (see FIG. 3) audibly or visually displays an alarm through a speaker, an alarm lamp, or the like provided in the solar connection unit in accordance with an alarm signal output from the controller 50.

In addition, the display unit 70 may be configured in the solar cell connection unit.

The display unit 70 may be installed on the front panel of the photovoltaic panel, and may be configured to display solar power generation, generation voltage, load current, and the like. And can be configured to be set or input.

The communication unit 80 transmits a control signal output from the controller 50 through a communication network. The communication network may be a wired / wireless communication network.

According to the present invention, there is an advantage that an optical fiber arc sensor can detect an arc generated in a solar cell array and a power line as well as inside a solar cell.

Further, the safety of the user can be ensured by the information displayed on the display unit, and there is an advantage that the access by the user can be detected and the human accident can be prevented.

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, but, on the contrary, It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

1: Photovoltaic array 2: Photovoltaic module
10: input unit 20:
30: output unit 40: detection unit
50: Controller 60: Warning part
70: Display unit 80:
110: arc detection module 110a: loop sensor
111: optical fiber 112: arc receiving unit
112a: scratch 112b: ultraviolet absorber
113: optical transmission unit 114: light reception unit
115: Optical signal processing unit 110b: Point sensor
120: current detection module
130: voltage detection module 140: temperature detection module
150: human body detection module 160: door detection module

Claims (5)

A photovoltaic panel for collecting and outputting a direct current produced from a solar cell array to an inverter,
An input unit for receiving power generated and output from the solar cell array;
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;
A blocking unit provided between the input unit and the output unit for selectively blocking power output from the input unit;
A detector for detecting an arc, a current, a voltage, a temperature, a user's approach, and whether the door is open or closed; And
A controller for generating and outputting a control signal for sending a message to the mobile device when the detected value detected by the detecting unit approaches or exceeds a set value;
And,
Wherein:
A solar cell array, a power line for supplying power generated by the solar cell array to the solar cell connection unit, and an arc generated inside the solar cell connection unit,
Wherein:
An arc detection module for detecting the power line supplying the solar cell array with power generated by the solar cell array and the arc generated in the solar cell connection module;
A current detecting module for detecting a current of a power line drawn into the solar cell connecting unit and a current supplied to the load;
A voltage detection module for detecting a voltage applied to a power line drawn into the solar cell module and a voltage applied to the load;
A temperature detection module for detecting a temperature inside the solar cell module;
A human body detecting module for detecting a user approaching the photovoltaic module or a user moving within a detection range; And
A door detection module for detecting the open and closed states of doors provided in the solar light connection panel;
/ RTI >
The arc detection module includes a loop sensor and a point sensor,
The loop sensor includes:
An optical fiber including a first optical fiber disposed to pass through an internal main power device of the photovoltaic connection module and a second optical fiber arranged to pass through a power line disposed between the solar cell array and the connection half;
An arc receiving unit provided in the optical fiber and arranged at a predetermined interval, and causing the generated arc to enter into the optical fiber;
An optical transmission unit for transmitting an optical signal to the optical fiber;
A light receiving unit for receiving an optical signal transmitted from the optical transmitting unit and input through the optical fiber; And
An optical signal processing unit for comparing and analyzing the optical signal transmitted from the optical transmitting unit and the optical signal received by the optical receiving unit to detect whether the transmitted optical signal has been converted;
/ RTI >
The point sensor detects an arc generated in a range of a hemisphere, and an amplification circuit including an operation diode, a photodiode, an op-amp, and an output transistor is configured in parallel,
In a state where an arc is not generated, a current is applied to the operation diode, the operation diode is flickered by the applied current,
When an arc is generated, an arc is incident on the photodiode of the amplifying circuit, and the photodiode is conducted in proportion to the size of the incident arc, and a conduction current according to conduction generates a potential difference at the input terminal of the op-amp Amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp; amp;, the output transistor is operated when the magnitude of the potential difference applied to the op-
And a plurality of point sensors are installed when the operating diode is not blinked, and a plurality of point sensors are installed.
delete delete The method according to claim 1,
The arc receiving unit includes:
A scratch formed on an outer surface of the optical fiber at a predetermined width in the longitudinal direction; And
An ultraviolet absorber applied to the outside of the scratch;
And a photovoltaic module having an arc detection function.
The method of claim 4,
The ultraviolet ray absorbing agent and the arc having passed through the scratch,
And converting the optical signal transmitted through the optical fiber, the converted optical signal being detected through a photodiode, amplified by a current-voltage conversion and amplification unit, and outputting an amplified signal of the photodiode. A photovoltaic connection board provided.

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