KR101879743B1 - Connection board of photovoltaic power having function of temperature and condensation detection - Google Patents

Abstract

An embodiment of the present invention relates to a solar light connection board having a temperature and condensation detection function. The solar light connection board detects the type and generation position of an arc generated in a solar cell array and a power line as well as an arc generated in a solar light connection board, detects temperature detection and condensation in the solar light connection board, and operates a blower when detecting condensation, thereby preventing damage caused by condensation. Therefore, according to the embodiment of the present invention, an overheating temperature and an arc, which are fire detection elements, are detected and provided to a manager to provide an accurate position when the manger checks the overheat temperature and the arc and immediately inspects a corresponding solar array, a contact portion, or a connection board. Thus, a preparation can be made for a fire in advance through an inspection time shortening effect and an electric fire prediction, and thus it is possible to safely operate a solar light generation system and prevent casualties and property damage.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a solar panel, and more particularly,

This embodiment relates to a photovoltaic connection module having a temperature and condensation detection function and detects not only the arc generated in the solar cell module but also the type of arc and arc generation position generated in the solar cell array and power line, The present invention relates to a solar light connection panel having a temperature and condensation detection function capable of temperature detection and condensation detection in a solar light connection panel and operating the blower during condensation detection to prevent damages caused by condensation in advance.

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 panel includes a DC output switch, a lightning protection element, a backflow prevention element, a terminal block, a fuse (or a switch), and an output terminal switch for measuring insulation resistance or checking a short circuit current periodically.

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.

However, although the above-described conventional technique may have some effect on the time and accuracy of detecting the arc, it takes a few tens of milliseconds to verify the detected arc and shut off the circuit.

Here, a high-intensity light ray is accompanied, 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.

Accordingly, when an arc occurs, it is necessary to accurately detect the type of arc and the position at which the arc occurs, and when the manager checks the solar array or the contact area or the access panel immediately, This system proposes a system that can preliminarily prepare in advance through the shortening of inspection time and electric fire prediction.

On the other hand, electric faults in electric power facilities constituting the switchboard including the high voltage switchboard, the low voltage switchboard, the distribution board and the motor control board are mostly occupied by the explosion and fire of the equipment due to overheating.

In particular, electric power accidents caused by overheating occur in all types of contacts, connectors, plugs, and rotating parts of electric power equipment, and the main causes are aging, corrosion, loosening, overload or fine dust.

Such an electric power accident caused by overheating causes abnormal overheating before an accident occurs.

Therefore, it is very important to continuously monitor the temperature of the point where the overheating can occur (equipment) to prevent accidents in advance.

However, when overheating is monitored by real-time telemetry, monitoring the partial temperature of a moving mechanical system is a difficult challenge.

That is, conventional approaches for measuring temperature have relied on detecting the temperature dependence of the resistance or the temperature dependence of various types of thermometers (sensors), diode junctions, or infrared radiation from heated objects.

In addition, it is also a difficult problem to measure the temperature of junctions and connection devices of high-voltage switch boxes or transmission lines.

That is, the general requirement for the above-mentioned power equipment is that there is a danger due to high voltage and a potential explosion possibility, and when the ground and the wire are connected, a path to the ground can be formed by the connected wire.

Thus, the temperature detection should not be connected to a metal structure or a fiber optic cable from a connection or a connecting device that is of interest to a supporting structure or frame.

In order to solve this problem, an infrared ray temperature measuring method is used. However, the infrared ray measuring method requires a direct view of a point of interest and a clear view for accuracy.

In addition, the infrared temperature measurement method is used for periodic inspection, and thus can not be performed by continuous inspection.

Accordingly, a temperature sensor that has been deviated from the infrared temperature measurement method has been proposed.

On the other hand, in the case of the photovoltaic connection unit, there was a case where an electric shock due to a short-circuit occurred due to internal condensation, which is defenseless.

Accordingly, a system has been proposed which can detect condensation in a solar light connection panel and immediately remove condensation when condensation occurs.

Korean Registered Patent: No. 10-1397946

In order to solve the above-described problems, the present embodiment intends to detect not only the arcs generated in the solar cell module but also the types of arcs and arcs generated in the solar cell arrays and power lines.

Another purpose is to analyze whether the detected arc is an arc of a serial arc, a parallel arc, or a direct parallel arc so as to open or short a string by arc type.

Another purpose is to detect the overheat temperature and arc which is a fire detection factor and provide it to the administrator, and after confirming it, provide the accurate position when checking the solar array or the contact area or the connection panel immediately, It is to be able to prepare for the fire in advance through electric fire prediction.

Another object is to detect the occurrence of condensation in real time, thereby providing corresponding detection information to the manager, and at the same time, operating the blower to minimize the damage caused by condensation.

According to one embodiment, there is provided a solar light connection panel having temperature and condensation detection function.

The PV array having the temperature and condensation detection function includes an optical fiber for a PV array arranged to pass through a contact portion of the PV array and a power line disposed between the PV array and the PV array; An optical fiber for a connection half arranged to pass through an internal main power device of a solar connection module; And an arc generation sensor unit. When an electric signal transmitted from the arc generation sensor unit is acquired, a unique ID value is provided to the arc type and position determination unit to determine an arc generation position, and the optical fiber for the PV array and the optical fiber A plurality of arc position detection devices disposed at predetermined intervals in the arc-shaped space; An A / D converter for converting a signal output from the PV module into a digital signal; A memory unit for storing installation position information and arc reference value information for each unique ID value; The arcs are detected by comparing the output signal with a predetermined arc reference value, and the arcing type of any one of the serial arc, the parallel arc, and the serial / parallel arc is detected. The unique ID value provided from the arc position detecting device is determined An arc type and position determination unit for performing arc type determination; And an arc type operation processing unit 140 for performing arc opening or shorting of the arc type string by referring to analysis information on whether the determined arc is an arc of a serial arc, a parallel arc, or a serial and parallel arc, A digital arc type operation device formed in the solar light connection panel; A condensation detection unit for detecting condensation information in the solar light connection panel, a temperature detection unit for detecting temperature information detected by the SAW temperature detection unit, And a controller configured to generate and output a control signal for transmitting the arc type information, the arc generation position information, and the condensation information detected by the condensation detection unit to the mobile device, and outputting the control signal.

As described above, in this embodiment, by detecting not only the arc generated in the solar photovoltaic module but also the type of arc and the arc generation position generated in the solar cell array and the power line, Can be detected.

In addition, this embodiment analyzes whether the detected arc is an arc of a serial arc, a parallel arc, or a serial / parallel arc, thereby instantaneously opening or shorting a string for each arc type, thereby preventing a fire in advance .

In addition, the present embodiment detects an overheat temperature and an arc, which are fire detection elements, and provides the same to an administrator, and then provides an accurate position when checking the solar array or the contact area or the connection panel immediately after confirming it. By allowing the fire to be prepared in advance through the effect and electric fire prediction, it is possible to prevent the safe operation of the photovoltaic power generation system, human casualties and property damage.

In addition, the present embodiment can detect the occurrence of condensation in real time, provide corresponding detection information to the manager, and at the same time, operate the blower to minimize the damage caused by the leakage accident caused by condensation.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a block diagram exemplarily showing an example of a photovoltaic connection module having a temperature and condensation detection function according to an embodiment; Fig.
2 is a configuration diagram of a solar light connecting panel having a temperature and condensation detecting function according to an embodiment;
3 is an exemplary view exemplarily showing an example of an apparatus for detecting an arc position of a photovoltaic connection panel having a temperature and condensation detection function according to an embodiment;
4 is a block diagram exemplarily showing an example of a manipulating device for each type of digital arc in a solar light connecting panel having a temperature and condensation detecting function according to an embodiment;
5 is a block diagram exemplarily showing an example of a controller of a solar light connecting panel having a temperature and condensation detecting function according to an embodiment;
6 is a configuration diagram exemplarily showing an example of a SAW temperature detection unit of a solar photovoltaic module having a temperature and condensation detection function according to an embodiment;
7 is an exemplary view showing a circuit diagram of a condensation detecting section of a solar light connecting panel having a temperature and condensation detecting function according to an embodiment;

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, wherein like reference numerals are used to designate identical or similar elements, and redundant description thereof will be omitted.

In the following description of the embodiments of the present invention, a detailed description of related arts will be omitted when it is determined that the gist of the embodiments disclosed herein may be obscured.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. , ≪ / RTI > equivalents, and alternatives.

Also, terms such as " comprising, "" comprising, "or " performed ", as disclosed in the following embodiments, mean that a component can be implanted unless otherwise specifically stated. It should be understood that the present invention is not limited to the components but includes other components.

In addition, the photovoltaic module having the temperature and dew detection function disclosed in the following embodiments can detect not only the arc generated in the photovoltaic connection module but also the type of arc generated in the solar cell array and the power line, It is possible to detect an arc generated by other constituent means other than the connection board.

In addition, after detecting the overheat temperature and arc, which is a fire detection element, it is provided to the administrator, and it is provided an accurate position when checking the solar array or the contact area or the connection panel immediately, Prediction can be used to prepare for the fire in advance.

In addition, it is possible to detect the occurrence of condensation in real time, to provide the detected information to the manager, and at the same time to operate the blower to minimize the damage of the leakage accident caused by condensation.

Hereinafter, the solar light connecting panel having the temperature and condensation detecting function will be described in more detail.

FIG. 1 is a block diagram exemplarily showing an example of a solar light connecting module having a temperature and condensation detecting function according to one embodiment. FIG. 2 is a block diagram of a solar light connecting device having a temperature and condensation detecting function according to an embodiment. FIG.

1, a solar power generation system according to an embodiment includes a solar array 100A, a connection unit 100B connected to the solar array, and an inverter 100C connected to the connection unit 100B .

In the solar array 100A, at least one PV module 101 may be formed in the form of a PV array.

The PV array may have a structure in which at least one PV module 101 is connected in series with a string and strings are connected in parallel.

The connection module 100B can include a controller 300 and a digital arc type control device 100 that can directly detect an arc from the solar array 100A or each PV module 101 and operate it by arc type have.

Referring to FIG. 2, a PV module with temperature and condensation detection function according to an embodiment includes an optical fiber 400 for a PV array, an optical fiber 500 for a connection unit, an arc position detection device 200, A type-specific operating device 100, a SAW temperature detecting unit 600, a condensation detecting unit 700, and a controller 300.

The optical fiber 400 for a PV array is arranged to pass through a contact area of the PV array 100A and a power line disposed between the PV array and the connection board 100B.

In other words, it is arranged to pass through a contact area and a power line, which may cause a fire due to an arc accident.

In the case of the contact part, when the operator tightens at least one bolt at the time of assembling, the probability of occurrence of the arc becomes high, and therefore, the optical fiber is disposed at the contact part.

Then, the optical fiber 500 for connection is disposed so as to pass through the main internal power device of the connection panel.

In addition, a plurality of the arc position detecting devices 200 are arranged at predetermined intervals in the optical fiber for the PV array and the optical fiber for the connection half.

According to another aspect of the present invention, there is provided an optical transmission apparatus including 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.

When the basic optical signal transmitted from the optical transmission unit is inputted to the basic optical signal proceeding through the optical fiber, the basic optical signal is converted in characteristics, and the converted optical signal is input to the optical receiving unit.

When the optical signal converted by the light receiving unit is inputted, it can be determined that an arc is generated.

In addition, the SAW temperature detector 600 for detecting temperature information is configured inside the solar cell connection panel.

The plurality of SAW temperature detectors 600 may be formed at regular intervals or may be formed in one piece.

In addition, a condensation detecting section 700 for detecting condensation information is formed inside the solar connection panel.

It is possible to determine whether or not a fire has occurred through the detection of the temperature information, and it is possible to prevent a leakage current accident by detecting condensation information in advance.

The SAW temperature detecting unit 600 and the condensation detecting unit 700 may be composed of a general temperature sensor and a condensation sensor, but it is preferable that the SAW temperature detecting unit 600 and the condensation detecting unit 700 are constituted by the following components.

In the meantime, according to the preferred embodiment of the present invention, the arc generation signal in the light receiving unit may be provided to the controller. However, as shown in FIG. 3, A selective transmission filter 210, an arc generation sensor unit 220, and a unique ID value transmission unit 230.

That is, a plurality of arc position detecting devices 200 are provided at predetermined intervals in the optical fiber, and each of the arc position detecting devices 200 is provided with arc generation information to the controller.

When the arc is generated, the ultraviolet selective transmission filter 210 selectively transmits only light in the ultraviolet region of the arc and blocks light in a different wavelength band.

Particularly, the optical fiber may be previously set to a position where the optical fiber is bent and arc is frequently generated, and the outside may be coated to prevent deterioration and evaporation of the ultraviolet selective transmission filter.

The arc generation sensor unit 220 senses light transmitted through the ultraviolet selective transmission filter, converts the light into an electric signal, and provides the electric signal to a unique ID value transmission unit.

That is, it is a structure for providing information so that the position of the arc can be accurately known.

At this time, the unique ID value sending unit 230 has a unique ID value. When acquiring the electric signal transmitted from the arc generation sensor unit, a unique ID value is assigned to the arc type and position determination unit of the digital arc type control device 100 So that the arc generation position can be determined.

For example, an RFID communication method, a Zigbee communication method, a beacon communication method, or a wired cable may be used for transmitting / receiving signals between the unique ID value transmitter and the digital ARC type operation device .

4 is a block diagram exemplarily showing an example of a manipulating device for each type of digital arc of a solar light connecting module having a temperature and condensation detecting function according to an embodiment.

As shown in Fig. 4, the digital arc type control apparatus 100 according to the present invention is installed in the solar light connecting panel.

The digital arc type control apparatus 100 according to the preferred embodiment includes an A / D conversion unit 110, a memory unit 120, an arc type and position determination unit 130, and an arc type operation processing unit 140 .

The A / D converter 110 converts a signal output from the PV module into a digital signal.

That is, the A / D conversion unit can convert the analog signal output from at least one PV module 101 into a digital signal having a sample rate of, for example, 50 kHz.

Here, the signal inputted to the manipulating device for each digital arc type is the voltage or current of the PV module 101.

Due to the uneven V / I characteristic of the PV module 101, the voltage also changes when the current changes.

Thus, the voltage or current of the PV module 101 can provide sufficient information to sense an arc occurring within the PV system.

At this time, the amplitude of the arc signal varies greatly depending on where the arc occurs in the system.

As a result, the A / D converter 110 converts the analog signal output from the PV module 101 into a digital signal, in order to make the detector operate properly in a wide range of amplitudes.

The electric arc current may lead to a disordered frequency spectrum.

For example, the spectrum of the arc extends from the DC to the microwave and light emission through the entire radio frequency spectrum.

The arcing position detection unit may detect an arc type by comparing the signal outputted through the A / D conversion unit with a preset arc reference value, It is possible to accurately determine the arc generation position by referring to the position.

That is, it is possible to provide not only the information that the arc has occurred to the manager but also the kind of the arc and the exact position where the arc has occurred.

The memory unit 120 stores installation position information for each unique ID value.

That is, it is intended to confirm which contact part of the solar array or which part of the connection half.

In addition, the arc reference value information is stored.

At this time, the arc type and position determination unit 130 detects an arc type of a serial arc, a parallel arc, and a serial / parallel arc by comparing the output signal with a predetermined arc reference value.

The arcing location is determined by referring to the installation location of the unique ID value provided from the arc position detection device and the unique ID value stored in the memory.

Generally, the amplitude of the arc signal measured in the PV module 101 may occur differently depending on where the arc occurs.

Therefore, the arc type and position determination unit 130 detects an arc type of any one of a serial arc, a parallel arc, and a serial-parallel arc generated from the PV module based on the general characteristics described above, If the output signal is within the arc reference value, it is determined that the parallel arc is a serial arc. If the output signal is smaller than the arc reference value, it is determined that the parallel arc is a serial arc.

An arc occurring at a portion connected in series with the PV module 101 and the load may be referred to as a serial AC, and as another example, a connection portion between two cells, a connection portion between two PV modules 101, A series arc is generated at the connecting point (portion) of the string and the connecting portion of the main DC bus.

In contrast, a parallel arc occurs in a region connected in parallel to the PV array, and there is also a series-parallel arc in which a series arc and a parallel arc are mixed, for example, one PV module 101 is connected in parallel, A series of parallel arcs can be generated at a portion of the string connected in series.

As described above, the present embodiment can more accurately detect the series arc, the parallel arc, and the direct parallel arc generated in each part of the PV module of the photovoltaic power generation system.

In addition, the arc type-specific operation processing unit 140 performs opening or shorting of an arc type string by referring to analysis information on whether the determined arc is an arc of a serial arc, a parallel arc, or a serial-parallel arc.

In order to perform the above function, the arc type operation processing unit 140 includes a serial arc processing module 141 for opening a string connected to the main DC bus in case of a serial arc, A remaining arc generation frequency determination module 142 for determining whether an arc generation frequency exists for a predetermined time after opening the string, and a parallel arc processing module 143 for shorting the string when an arc generation frequency exists .

In addition, the series arc fault described in the present invention occurs when there is a break in the conductor and a current couples the gap.

On the other hand, parallel arc faults occur when arcs are formed between conductors at different potentials.

There are several potential parallel arc fault paths, but three common types of parallel arcs are:

First, parallel arcing to ground leads can occur, for example, when the cathode DC cable is shorted to the anode conductor due to wear of the cable in the conduit, damage or damage to the installation equipment.

Second, string crossed parallel arcs occur when arcs are formed in conductors on different strings with different potentials.

Third, parallel arcs between strings can occur anywhere in the string where the shorts occur. For example, it can be inside a connection board.

Accordingly, in the present invention, parallel arcs are detected rather than the serial arcs, and algorithms for controlling the parallel arcs according to the types of parallel arcs are different to prevent serious damage of the system in advance.

For this purpose, the arcs detected by the arc type-specific manipulation processor 140 are opened or short-circuited according to the arcs of the serial arc, the parallel arc, and the serial-parallel arc.

The technique of performing the opening or shorting of the string is a general technique, and a detailed description thereof will be omitted.

The above configuration is for providing a process for opening the string to determine whether or not an arc generating frequency exists, and when the string is still present, the string is short-circuited to destroy the arc.

Accordingly, in order to extinguish the arc, if the arc generation frequency is still present after the string is opened using the arc type operation processing unit, the string is short-circuited and the parallel arc is extinguished.

Particularly, the arc-type manipulation processing unit short-circuits both strings existing in the arc-generated region when the arc type is a string crossing parallel arc.

When a string crossed parallel arc occurs, the arc resistance determines the arc current and power.

For example, a drop of 200 V across an arc fault path means that this arc will start with a shorter conductor gap than a fault across the entire string, and during the inter-string parallel arc, Lt; RTI ID = 0.0 > voltage potential < / RTI > through the arc path.

Therefore, shorting both strings to prevent chain breakdown.

5 is a block diagram exemplarily showing an example of a controller of a solar light connecting panel having a temperature and condensation detecting function according to an embodiment.

5, the controller 300 includes a monitoring information transmission unit 310, an arc frequency calculation unit 320, an electric fire prediction unit 330, a temperature abnormality determination unit 340, a condensation occurrence determination unit 350).

At this time, the monitoring information transmitting unit 310 transmits the temperature information detected by the SAW temperature detecting unit 600, the arc type information determined from the operation device 100 according to the arc type, and the arc occurrence position information to the condensation detecting unit 700 And generates and outputs a control signal for transmitting the detected condensation information to the mobile device.

Accordingly, the manager can monitor temperature, arc, condensation, and the like in real time using the mobile device.

According to a further aspect of the present invention, a current detector and a voltage detector may be further included.

At this time, the current detecting unit detects the current of the power line drawn into the solar cell connecting unit and the current supplied to the load.

For example, CT (meter current transformer) can be used to detect a reduced current at a constant rate.

The voltage detecting unit detects a voltage applied to the power line drawn into the solar cell connecting board and a voltage applied to the load.

For example, it can be configured to detect a reduced voltage at a constant rate using a PT (meter transformer).

As described above, when the arc is generated, the arc type information and the arc occurrence position information are transmitted to the mobile device with reference to the detected temperature value, the current value, the voltage value, and the like.

This is to provide the current, voltage, and temperature information that can be backed up in the event of an arc so that the administrator can determine what is causing the arc.

The arc frequency calculator 320 calculates the occurrence frequency or duration of the arc determined by the arc type and position determiner 130.

That is, the arc type and position determining unit 130 calculates an arc occurrence duration or arc occurrence duration that detects the frequency or duration of a signal sensed at a predetermined period after the start of monitoring.

The reference period of the arc frequency arithmetic unit according to the connection panel installation condition and the usage environment change may be changed in a predetermined cycle, and the administrator can adjust it to suit the use environment.

Generally, even if an arc is detected due to the characteristics of the solar array and the connection unit, the detected arc may be a normal arc other than normal operation in the solar cell, such as switch opening and closing, In this case, it is effective not to perform the control operation that affects the operation of the photovoltaic power generation system such as shutting off the main power of the photovoltaic connection panel or shutting off the load. to be.

The electric fire predicting unit 330 provides a power off event signal to the monitoring information transmitting unit when the occurrence frequency or duration per hour meets the occurrence frequency or duration per set time, And performs a function for intercepting.

This is to minimize the secondary damage by immediately blocking the main power supplied to the photovoltaic module while providing the information to the manager's mobile device through the monitoring information transmitter.

The temperature abnormality determination unit 340 compares the temperature information detected by the SAW temperature detection unit 400 with the reference temperature information. If the temperature abnormality is out of the reference temperature information, the abnormality determination unit 340 determines that the abnormality occurs and transmits a temperature abnormality event signal to the monitoring information transmission unit And the like.

For example, if the reference temperature is set to 30 deg. C and the detected temperature is 35 deg. C, it is judged as abnormal and the alarm information including the temperature abnormality event signal, i.e., the detected temperature value is provided to the monitoring information sending unit.

The condensation occurrence determination unit 350 compares the condensation information detected by the condensation detection unit 500 with the reference condensation information. If the condensation occurrence information is out of the reference condensation information, the condensation occurrence determination unit 350 determines that the condensation occurrence state is abnormal and provides a condensation occurrence event signal to the monitoring information transmission unit And serves to provide an operation signal to the blower 800 formed inside the solar connection unit.

For example, the reference condensation value is set to 5 uA. If the detected condensation value is 10 uA, it is determined to be an abnormal state, and the condensation occurrence event signal, that is, the alarm information including the detected condensation value is provided to the monitoring information transmission unit. And the operation signal is transmitted to the blower 800 formed inside the optical connection board.

6 is a configuration diagram exemplarily showing an example of a SAW temperature detector of a solar photovoltaic module having a temperature and condensation detection function according to an embodiment.

6, the SAW temperature detecting unit 600 performs a function of detecting temperature information inside the solar cell connecting unit. To this end, the SAW temperature detecting unit 600 includes a base plate 610 that is in surface contact with a temperature detecting point, An operation power supply module 620 installed on the base plate 610 for outputting operation power, an IDT interdigital (not shown) for outputting an RF (Radio Frequency) potential having a constant frequency to the power output from the operation power supply module 620, a crystal module 640 that oscillates based on the RF potential output from the IDT electrode 630, an oscillation module 650 that amplifies the oscillation generated in the crystal module 640, And a resonance coil 660 for outputting a frequency outputted from the resonance coil 650.

The SAW temperature detection unit is attached to the inside of the solar light connection panel to detect the temperature and oscillates and outputs the resonance frequency of the crystal generated according to the temperature change. The SAW temperature detection unit uses the change of the resonance frequency according to the temperature change.

In other words, when an RF (radio frequency) potential having a constant frequency is applied through an IDT (interdigital transducer) electrode formed on one surface of a crystal, a secondary piezoelectric effect is repeatedly generated, and a surface acoustic wave having a certain frequency is generated.

Here, the crystal is oscillated by the surface acoustic wave to output the resonance frequency, and the resonance frequency output from the crystal varies according to the temperature change.

That is, a predetermined difference occurs in the resonance frequency generated at the set temperature and the resonance frequency oscillated according to the temperature change.

At this time, the power applied to the crystal is provided to the base plate 610 through the operation power supply module 620 which outputs operation power.

Meanwhile, according to another embodiment, an induced electromotive force derived from a line inside the solar cell module may be used, and the resonance frequency generated from the crystal is amplified and outputted using a resonator.

Accordingly, it is possible to detect the temperature by comparing the oscillated resonance frequency according to the resonance frequency and the temperature change at the set temperature according to the natural vibration of the crystal.

In addition, by applying the unique resonance frequencies of the crystals provided in the SAW temperature detecting unit to each other and detecting the resonance frequency oscillated by the applied crystal, the position where each SAW temperature detecting unit is installed can be detected.

Therefore, in the present invention, when the SAW temperature detecting unit is configured inside the solar cell connecting unit and a plurality of SAW temperature detecting units are arranged at regular intervals, different temperature values are transmitted when the temperature is detected to be higher than the set temperature.

At this time, it is possible to judge from which position the cause of raising the fire or other temperature is caused by comparing the respective temperature values with each other.

At this time, the SAW temperature detecting unit oscillates the frequency according to the change of the temperature, and transmits the frequency to the controller 300 by radio.

Each of the constituent means will be described in detail below.

The base plate 610 has a shape in which the base plate 610 is in surface contact with a temperature detection point. For example, the base plate 610 has a predetermined plate shape, and a groove 611 is formed at one side thereof.

At this time, the operation power supply module 620 is installed on the base plate 610 and outputs operation power.

In this case, a separate battery may be constructed or a commercial power supply may be used.

On the other hand, in the case of the induction electromotive force system, as shown in FIG. 6, the induction coil is arranged in a spiral shape on the PCB substrate, and the electromotive force induced in proportion to the length of the induction coil is increased.

Accordingly, the operation power output from the operation power supply module 620 may further include a resistor and a capacitor to output a uniform operation power.

By forming the IDT (interdigital transducer) electrode 630, an RF (Radio Frequency) potential having a constant frequency is output to the power output from the operation power supply module 620.

At this time, a crystal module 640 is formed on the upper side of the IDT electrode 630, and the crystal module 640 is oscillated by the RF potential output from the IDT electrode 630.

Crystal is a kind of device that has the characteristics of piezoelectric effect and is a very precise reference source and is applied to a wide range of electronic devices.

Here, the piezoelectric effect refers to a phenomenon that when a stress is applied to a specific crystalline material (e.g., a crystal or the like), an electric field is generated between the surfaces of the crystalline material in proportion to the mechanical stress of the stress (primary piezoelectric effect) When the electric field is applied between the surfaces of the material, mechanical deformation occurs in the crystalline material (secondary piezoelectric effect), which means that the electric energy and the mechanical energy are mutually deformed.

Therefore, when the power output from the operation power supply module 620 is applied to the crystal module 640 through the interdigital transducer (IDT) electrode 630, the secondary piezoelectric effect is repeatedly generated in the crystal module, An elastic wave having a frequency is generated.

The elastic waves resonate the crystal, and the resonance frequency of the crystal correlates with the ambient temperature of the crystal.

That is, by analyzing the difference between the fundamental resonance frequency of the crystal and the changed resonance frequency according to the temperature, the temperature can be detected.

In addition, the thickness of the crystal is an important factor determining the fundamental resonance frequency of the crystal.

In other words, since the resonance frequency can be varied according to the processing thickness of the crystal, a crystal having a different resonance frequency is applied to the SAW temperature detecting unit, and the resonance frequency for the SAW temperature detecting unit at the position where the SAW temperature detecting unit is installed Once stored, the position of the detected resonant frequency can be determined.

At this time, the vibration generated by the crystal module 640 is amplified through the oscillation module 650, and the frequency output from the oscillation module 650 is outputted by the resonance coil 660.

A protection cap 670 for protecting the operation power supply module 620, the IDT electrode 630, the crystal module 640, the oscillation module 650 and the resonance coil 660 is formed on the base plate 610, Respectively.

The SAW temperature detector having such a configuration can be installed simply at a position to be detected, and the temperature can be easily detected by outputting the resonance frequency of the crystal wirelessly, and the position can be determined according to the natural resonance frequency of the crystal have.

Generally, the resonance frequency of the crystal is divided into 12 groups so that the respective resonance frequencies do not overlap each other in the range of 425 to 442 MHz.

For example, when the range of the detected resonance frequency is 425.0 to 426.4 MHz, it can be confirmed by the frequency outputted from the first SAW temperature detecting unit, and the position where the first SAW temperature detecting unit is installed can be detected.

Accordingly, as in the present invention, a plurality of SAW temperature detecting units are formed inside the solar cell connecting unit, and when detected at a temperature higher than the set temperature, the detected temperature values are respectively transmitted at the installed positions.

7 is an exemplary view showing a circuit diagram of a condensation detecting section of a solar light connecting panel having a temperature and condensation detecting function according to an embodiment.

As shown in Fig. 7, the condensation detection unit 700 performs a function of detecting condensation information in the solar connection unit.

That is, the condensation detecting unit 700 constitutes a schmitt circuit in which the first transistor 701 (Tr1) and the second transistor 702 (Tr2) are connected in parallel to the condensation sensor 705. The first transistor 701 A base of the second transistor 702 is connected to the collector of the first transistor 401 and a base of the transistor Tr2 is connected to the collector of the first transistor 401, Tr3 are connected to the collector of the third transistor 703 and Tr3 and the base of the fourth transistor 704 is connected to the emitter of the third transistor 703 and Tr3, The collector of the transistor 701 and the collector of the fourth transistor 704 are connected to the output terminal and the LED 707 is connected in parallel to the fourth transistor 704 and Tr4.

At this time, the output terminal is connected to the condensation occurrence determination unit 350 to determine whether condensation has occurred.

A circuit diagram of the condensation detecting unit will be described. The resistance of the condensation sensor 705 is ∞ Ω and the base voltage of the first transistor 701 is 0 V at a dew point temperature below which condensation has not occurred.

The first transistor 701 is opened and a voltage is applied to the base of the second transistor 702 to turn on the second transistor 702. The second transistor 702 is turned on, Flows through a resistor R5 connected to the collector of the second transistor 702 and a resistor R4 connected to the emitter of the second transistor 702. [

At this time, when the humidity of the interior of the solar cell increases and the resistance value of the condensation sensor 705 becomes lower than a predetermined value, a voltage is applied to the base of the first transistor 701, And the second transistor 702 is opened.

The third transistor 703 and the fourth transistor 704 are turned on in response to the opening of the second transistor 702 and the LED 707 connected in parallel to the fourth transistor 704 is turned on.

Here, the variable resistor 706 regulates the resistance of the condensation sensor 705 to adjust the sensitivity of humidity detection.

The condensation occurrence determination unit 350 acquires an output signal from the collector of the fourth transistor 704 to determine whether condensation has occurred.

The photovoltaic module with the temperature and condensation detection functions described above can be implemented in the form of program instructions that can be executed through various computer components and recorded on a computer-readable medium.

The computer readable medium may be any medium accessible by the processor. Such media can include both volatile and nonvolatile media, removable and non-removable media, communication media, storage media, and computer storage media.

A communication medium may include computer readable instructions, data structures, program modules, other data of a modulated data signal such as a carrier wave or other transmission mechanism, and may include any other form of information delivery medium known in the art.

The storage medium may be any type of storage medium such as RAM, flash memory, ROM, EPROM, electrically erasable read only memory ("EEPROM"), registers, hard disk, removable disk, compact disk read only memory Or any other type of storage medium.

Such computer storage media may be embodied as program instructions, such as RAM, ROM, EPROM, EEPROM, flash memory, other solid state memory technology, CDROMs, digital versatile disks (DVDs) or other optical storage, magnetic cassettes, magnetic tape, magnetic disk storage, Lt; RTI ID = 0.0 > and / or < / RTI >

Examples of program instructions may include machine language code such as those produced by a compiler, as well as high-level language code that may be executed by a computer using an interpreter or the like.

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 exemplary embodiments or constructions. You can understand that you can do it. The embodiments described above are therefore to be considered in all respects as illustrative and not restrictive.

100: Digital arc type control device
101: PV module
200: an arc position detecting device
300: controller
400: Optical fiber for PV array
500: Optical fiber for connection
600: SAW temperature detector
700: condensation detection unit

Claims (4)

In a solar light connection panel having a temperature and condensation detection function,
An optical fiber 400 for a PV array arranged to pass through a contact portion of the PV array 100A and a power line disposed between the PV array and the solar connection panel 100B;
An optical fiber (500) for a connection half arranged to pass through an internal main power device of a solar connection module;
An ultraviolet selective transmission filter 210 for selectively transmitting only light in an ultraviolet region of an arc and blocking light in other wavelength bands when an arc is generated, a light source 210 for detecting light transmitted through the ultraviolet selective transmission filter 210, The arc generation sensor unit 220 has a unique ID value and provides a unique ID value to the arc type and position determination unit when the electric signal transmitted from the arc generation sensor unit 220 is acquired And a unique ID value transmission unit 230 for determining an arc generation position. The arc position detection apparatus includes a plurality of optical position detecting devices (not shown) disposed at predetermined intervals in the optical fiber 400 for the PV array and the optical fiber 500 for connection 200);
A digital arc type control device (100) formed in the solar light connection panel;
A SAW temperature detector (600) for detecting temperature information inside the solar cell module;
A condensation detecting unit (700) for detecting condensation information in the solar cell connecting unit; And
The temperature information detected by the SAW temperature detector 600, the arc type information and the arc generation position information determined from the operation device 100 according to the arc type, and the condensation information detected by the condensation detector 700, to the mobile device And a monitoring information transmitting unit 310 for generating and outputting a control signal capable of receiving the control signal.
And,
The digital arc type-specific operation device 100,
An A / D converter 110 for converting a signal output from the PV module into a digital signal;
A memory unit 120 for storing mounting position information and arc reference value information for each unique ID value;
The arcs are detected by comparing the output signal with a predetermined arc reference value to detect arcs of any one of a serial arc, a parallel arc, and a serial / parallel arc. An arc type and position determination unit 130 for determining the arc type and position;
An arc type operation processing unit 140 for performing arc opening or shorting of the arc type string by referring to analysis information on whether the determined arc is any one of a serial arc, a parallel arc, and a serial / parallel arc;
And,
The SAW temperature detector 600 detects a temperature
A base plate 610 in surface contact with the temperature detection point;
An operation power supply module 620 installed on the base plate 610 to output operation power;
An interdigital transducer (IDT) electrode 630 for outputting an RF (Radio Frequency) potential having a predetermined frequency to the power output from the operation power supply module 620;
A crystal module 640 oscillated by an RF potential output from the IDT electrode 330;
An oscillation module 650 for amplifying the oscillation generated in the crystal module 640; And
A resonance coil 660 for outputting a frequency output from the oscillation module 650;
The temperature is detected by comparing the resonance frequency at a set temperature according to the natural vibration of the crystal provided in the crystal module 640 and the resonance frequency generated by the temperature change,
The controller (300)
An arc frequency calculation unit 320 for calculating the occurrence frequency or duration of the arc determined by the arc type and position determination unit 130 per hour;
And provides an electric power shutdown event signal to the monitoring information dispatcher when the occurrence frequency or duration per hour meets the occurrence frequency or duration per predetermined time, and the electric fire predictor 330 );
A temperature abnormality determination unit 340 for comparing the temperature information detected by the SAW temperature detection unit 400 with the reference temperature information and determining an abnormal state when the reference temperature information is deviated from the reference temperature information and providing a temperature abnormality event signal to the monitoring information transmission unit; And
If the condensation information detected by the condensation detection unit 700 is compared with the reference condensation information and the reference condensation information is deviated from the reference condensation information, it is determined that the condensation state is abnormal and the condensation occurrence event signal is provided to the monitoring information transmission unit. A condensation occurrence determination unit 350 for providing an operation signal to the condensation occurrence determination unit 800;
And a temperature detecting unit for detecting a temperature of the solar cell.
delete delete The method according to claim 1,
The condensation detector (700)
A condensation sensor 705,
A Schmitt circuit in which the first transistor 701 (Tr1) and the second transistor 702 (Tr2) are connected in parallel to the condensation sensor 705 is formed,
A condensation sensor 705 and a variable resistor 706 are provided at the bases of the first transistors 701 and Tr1,
The base of the second transistor 702 is connected to the collector of the first transistor 401 and the base of the third transistor 703 is connected to the collector of the second transistor 702 Tr4 are connected to the emitters of the third and fourth transistors 703 and Tr3 and the collector of the first transistor 701 and the fourth transistor Tr4 are connected to the emitter of the third transistor 703, And the condenser is connected to the output terminal. The output terminal is connected to the condensation occurrence determination unit 350 to enable the condensation occurrence determination unit 350 to determine whether condensation has occurred. Photovoltaic module with detection function.

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