KR200457335Y1 - Smart photovoltaic power generation system - Google Patents

Abstract

The present invention relates to a smart photovoltaic power generation system, a plurality of solar panels (10, 10 ') (10 ") to collect energy from sunlight to produce power, and each of the solar panels 10 ( A plurality of connection terminal boxes 11, 11 ', 11 " for collecting voltage and current generated at 10 ' and 10 " and outputting them to the inverter, and respective solar panel 10, 10 ' At least one photovoltaic device (100) consisting of management sensor modules (20, 20 ', 20 ") for sensing and transmitting wirelessly the power generation state of (10"); Management server 300 for managing the development state of the (100); and receives a plurality of signals transmitted from the management sensor module 20 (20 ', 20 ") management server 300 through the network (N) One or more gateways 200, 200 ', 200 "

Description

Smart photovoltaic power generation system {SMART PHOTOVOLTAIC POWER GENERATION SYSTEM}

The present invention relates to a smart photovoltaic power generation system, and more particularly, to a smart photovoltaic power generation system that can remotely manage a photovoltaic device that is geographically separated.

Photovoltaic power generation is a power generation method that converts sunlight directly into electrical energy using a battery cell. This photovoltaic power generation has been spotlighted as a new energy source due to the depletion of fossil fuels and pollutants generated during the combustion of fossil fuels.

The power generation device for solar power generation is composed of a plurality of solar panels and inverters in which a plurality of battery cells are arranged in series or in parallel. Such photovoltaic devices are typically installed unattended on rooftops of buildings or idle areas where people do not travel well.

However, since the solar cell apparatus is operated unattended on the roof of a building, it is difficult to know when an unexpected abnormal operation occurs in the solar panel. For example, when a solar cell panel constituting the photovoltaic device is contaminated and power output is reduced, or abnormal operation occurs due to an open or short of a battery cell constituting the solar panel, It was difficult to detect and thus a serious problem occurred that the total amount of skipped power was lowered.

The present invention has been made to solve the above problems, it is an object of the present invention to provide a smart photovoltaic power generation system that can immediately detect the remote operation when the abnormal operation occurs in the photovoltaic device.

In order to achieve the above object, the smart photovoltaic power generation system according to the present invention is connected to a plurality of solar panels 10, 10 ', 10 ", respectively, the voltage and current generated in the solar panel And a plurality of connection terminal boxes 11, 11 ', 11 "for collecting and outputting the inverter to the inverter, and connected to each of the connection terminal boxes 11, 11', 11" of the solar cell panel 10, respectively. It consists of the management sensor module 20, 20 '(20') for sensing the power generation state of the (10 ') (10 ") and transmits wirelessly, the management sensor module 20 (20') ( 20 ") includes a power detector 21 for sensing power of the solar panel and generating a power detection signal, a transmitter 23 for wirelessly transmitting the power detection signal, and a unique value corresponding to the solar panel. A plurality of photovoltaic devices 100, 100 ', 100 "including an ID input unit 24 for inputting an ID; A plurality of power detection devices having a unique ID transmitted from the plurality of management sensor modules 20, 20 ', and 20 ", which are connected to each of the 100, 100', and 100", respectively. Gateways 200, 200 ', and 200 ", which collectively receive signals and transmit the signals through the network N; And installed in a remote location for the integrated management of the power generation state of the photovoltaic device 100, 100 '(100 "), and transmitted from each of the gateway 200, 200', 200" Receiving unit 310 for receiving a plurality of power detection signals having an ID, and specific solar panels 10, 10 ', 10 "constituting the photovoltaic devices 100, 100', 100". And a power value comparison unit 320 for comparing the detected power value corresponding to the power detection signal of the control panel with the normal power value that the specific solar panel 10, 10 ', 10 " can produce in the normal state. An abnormal signal generator 330 for generating an abnormal signal when a difference between the sensed power value and the normal power value exceeds a set error value, and an alarm unit for notifying an abnormality of the specific solar panel when the abnormal signal is generated; It characterized in that it comprises a; management server 300 having a 340.
In the present invention, the management sensor module 20, 20 ', 20 "further includes a temperature sensing unit 22 for measuring the temperature of the solar panel to generate a temperature signal.
In the present invention, the management sensor module 20, 20 ', 20 "further includes a power protection unit 26 for protecting from reverse voltage or surge voltage.
In the present invention, the power detection unit 21, the voltage sensor 21a for detecting the voltage output from the solar panel, and the current sensor 21b for detecting the current output from the solar panel. ), The analog / digital converter 21c for converting the voltage and current values from the analog signal to the digital signal, and the desired digital signal by removing noise from the digital signal converted by the analog / digital converter 21c. And a digital filter 21d for extracting the value.
In the present invention, the management server 300, when the abnormal signal is generated further includes an abnormal state notification unit 350 for transmitting an abnormal state related to the abnormal signal by text or email.
In the present invention, the setting of the normal power value is made in consideration of the temperature signal of the specific solar panel detected by the temperature sensing unit 22 of the management sensor module.

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According to the present application, when an abnormal operation occurs in the solar panel constituting the photovoltaic device that is installed apart from the region, it is possible to immediately know whether there is an abnormality of a specific solar panel even in a remote place. As a result, the manager can respond immediately and prevent the power generation efficiency from dropping.

In addition, even if the administrator is far from the management server, when the abnormal operation occurs in the photovoltaic device, the abnormal state is sent by text or e-mail, there is an effect, it is possible to immediately check the abnormal state.

1 is a view for explaining the configuration of a smart photovoltaic power generation system according to the present invention,
2 is a view for explaining the configuration of the photovoltaic device of FIG.
3 is a view for explaining the configuration of the management sensor module of FIG.
4 is a view for explaining the configuration of the power signal detection unit of FIG.
5 is a view for explaining the configuration of the management server of FIG.

Hereinafter, a photovoltaic device integrated management system according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a view for explaining the configuration of the smart photovoltaic power generation system according to the present invention, Figure 2 is a view for explaining the configuration of the photovoltaic device of FIG. 3 is a view for explaining the configuration of the management sensor module of Figure 2, Figure 4 is a view for explaining the configuration of the power signal detection unit of Figure 3, Figure 5 illustrates the configuration of the management server of FIG. It is a figure for following.

As shown, the smart photovoltaic power generation system according to the present invention, a plurality of solar panel (10, 10 ') (10 ") and each of the solar panel to produce energy by collecting energy from sunlight (10) (10 ', 10') a plurality of terminal boxes (11) (11 ') (11 ") for collecting and outputting the voltage and current generated by the inverter, and each solar panel 10 One or more photovoltaic power generation devices (100) consisting of management sensor modules (20), (20 ', 20 ") for sensing and transmitting wirelessly the power generation state of (10') (10"); Management server 300 for managing the power generation state of the photovoltaic device 100; and receives a plurality of signals transmitted from the management sensor module 20 (20 ', 20 ") through the network (N) One or more gateways 200, 200 ', 200 ", which are transmitted to the management server 300.

In the present embodiment, for convenience of description, three solar photovoltaic devices and gateways are illustrated and described, but the number of photovoltaic devices and gateways may be increased or decreased depending on the amount of power generation or management target. In addition, the network N may be the Internet, or may be a wireless network or a satellite network operated by a mobile carrier.

The solar panel 10, 10 ′, 10 ″ constituting the photovoltaic device 100, 100 ′, 100 ″ is implemented by connecting a plurality of battery cells in series or in parallel. As of 2009, the voltage generated in one battery cell is about 0.6V, and the power production capacity varies depending on the size, but is about 1.5 watts (W) per battery cell. Therefore, in order for a solar panel to produce a lot of power, a plurality of battery cells must be connected in series / parallel.

The plurality of solar cell panels 10, 10 ′, 10 ″ are connected in series or in parallel through the connection terminal boxes 11, 11 ′, 11 ″ to form a photovoltaic device.

Connection terminal boxes 11, 11 ', and 11 "are installed on the back of each solar panel 10, 10', 10" and electrically connected thereto. The connection terminal boxes 11, 11 ', and 11 "collect electrical energy generated from the solar panels 10, 10' and 10", that is, voltage and current, and convert DC power into AC power. Output to an inverter (not shown), the AC power converted by the inverter is supplied to a load connected to the photovoltaic device.

The management sensor modules 20, 20 'and 20 "are connected to the respective solar panels 10, 10' and 10", and the solar panels 10, 10 'and 10 "are connected to each other. Generates a power detection signal related to the power generated from and a temperature signal related to the ambient temperature, and inputs a unique ID corresponding to each solar panel.

To this end, as shown in FIG. 3, the management sensor modules 20, 20 ′, and 20 ″ may detect power of the corresponding solar cell panel and generate a power detection signal, and a solar cell panel. Temperature sensing unit 22 for measuring the temperature of the temperature generating a temperature signal, a transmission unit 23 for transmitting the power detection signal and the temperature signal wirelessly, and ID input unit for inputting a unique ID corresponding to the solar panel 24, a display portion 25 for displaying the operating state of the solar cell panel, a power supply protection portion 26 for protecting against reverse voltage or surge voltage, a power sensing portion 21, a temperature sensing portion 22, And a control unit 27 organically connected to the transmitter 23, the ID input unit 24, the display unit 25, and the power protection unit 26.

The power detector 21 detects power input through the connection terminal boxes 11, 11 ′ and 11 ″, that is, power (voltage and current) generated from the corresponding solar panel, and detects power according to the detected value. Generate a signal.

When an abnormality occurs in the solar panel or a short or short circuit occurs in the battery cell, an abnormal operation occurs in which the amount of power produced is changed. The power detector 21 detects the changed amount of power and generates a corresponding power detection signal. As shown in FIG. 4, the power detector 21 includes a voltage sensor 21a, a current sensor 21b, and an analog. The digital converter 21c and the digital filter 21d are implemented.

The voltage sensor 21a senses the voltage output from the corresponding solar panel, but divides the output voltage of the + and-terminals of the solar panel into voltages that can be applied to the analog / digital converter 21c to be described later and outputs the voltage. Ensure precise voltage measurements are made.

The current sensor 21b senses the current output from the corresponding solar cell panel, and is formed of, for example, a known magnetic field circuit and a hall sensor, or implemented using a circuit.

The analog / digital converter 21c converts the measured voltage and current values from the analog signal to the digital signal.

The digital filter 21d removes noise from the digital signal converted by the analog / digital converter 21c and extracts a desired digital value. The digital value thus extracted is transmitted to the transmitter 23.

The temperature detector 22 measures the temperature of the solar cell panel and generates a temperature signal.

ID input unit 24 grants a unique ID corresponding to each of the solar panels 10, 10 ', 10 ", and each unique ID should not overlap. By assigning a unique ID corresponding to the battery panels 10, 10 ', 10 ", it is possible to determine which panel is located where the solar panel is located when an abnormality occurs in a specific solar panel. The ID input unit 24 is implemented as an 8-pin dip switch or a 4-pin dip switch.

The photovoltaic device 100, 100 ′, 100 ″ is implemented with a plurality of solar panels 10, 10 ′, 10 ″ arranged in series or in parallel, so that the solar cell apparatus 100, 100 ′, 100 ″ may be abnormal. It is difficult to know which solar panel is abnormal when it is generated. Therefore, in order to identify which specific solar panel is the abnormality should be given a unique ID corresponding to the specific solar panel. If a unique ID is not given, it is impossible to distinguish a specific solar panel that has an abnormality among several solar panels.

The display unit 25 is implemented as an LED for indicating the operation state of the management sensor module 20, 20 '(20 ") of the corresponding light, the power protection unit 26 is a reverse voltage or surge supplied from the solar panel Protects the management sensor modules 20, 20 'and 20 "from voltage.

The management sensor module 20, 20 ', 20 "is preferably connected to each of the solar panels 10, 10', 10" 1: 1, and is connected to the solar panel When abnormality occurs, or when a short or short circuit occurs in the battery cell, or when the temperature of the solar panels 10, 10 ', 10 " rises excessively, a corresponding signal is measured by measuring the changed power output. Will be raised.

Meanwhile, the management sensor modules 20, 20 'and 20 "may be connected to the array by using a plurality of solar panels as an array unit according to the purpose of use. In this case, the management sensor module is an array unit. Generates a power detection signal related to the generated power and a temperature signal related to the ambient temperature.

The gateways 200, 200 ′ and 200 ″ are installed to correspond to the photovoltaic devices 100, 100 ′ and 100 ″ 1: 1. Receive a plurality of signals transmitted from the management sensor modules 20, 20 'and 20 "of each photovoltaic device and transmits them to the management server 300. These gateways 200, 200', 200 ") Is a repeater that receives a plurality of power detection signals having a unique ID transmitted from the management sensor module 20, 20 ', 20" and transmits them to the management server 300 through the network (N) Plays a role.

The management server 300 is installed at a remote site to manage the power generation state of one or more of the photovoltaic devices 100, 100 ', 100 ". Such a management server 300 is each solar light Receives a plurality of power detection signals transmitted from the gateways 200, 200 'and 200 "connected to the power generators 100, 100' and 100" through a network N, Analyze the received power detection signal to check and manage the photovoltaic device and the abnormality of the solar panel constituting the photovoltaic device.

In order to enable this, the management server 300, as shown in Figure 5, the receiving unit for receiving a plurality of power detection signals having a unique ID transmitted from each of the gateway 200, 200 ', 200 "( 310 and a detection power value corresponding to the power detection signal of the specific solar panel 10, 10 ', 10 "constituting the photovoltaic device 100, 100', 100" and the specific The power comparison unit 320 compares the normal power values that the solar panels 10, 10 ', and 10 " can produce in the normal state, and the difference between the detected power value and the normal power value is a set error value. An abnormal signal generator 330 for generating an abnormal signal when the signal is exceeded; An alarm unit 340 informing an abnormality of the specific solar panel when an abnormal signal is generated; And an abnormal state notification unit 350 for transmitting an abnormal state related to the abnormal signal by text or email when an abnormal signal is generated. The receiving unit 310, the power value comparing unit 320, the abnormal signal generating unit 330, the alarm unit 340 is organically coupled to the control unit 360, the power source for operation is a constant power source or a photovoltaic device Use the power generated by

The receiver 310 receives a plurality of power detection signals having a unique ID transmitted from the gateway and temperature signals generated by the temperature detection unit 22.

The power value comparison unit 320 compares the power value corresponding to the power detection signal generated in the specific solar panel with the normal power value that the specific solar panel can produce in the normal state. At this time, the normal power value is based on the temperature around the solar panel is 25 ℃.

On the other hand, the setting of the normal power value should be made in consideration of the temperature signal of the specific solar panel detected by the temperature sensing unit 22. This is because if the ambient temperature of the solar panel is excessively high, the amount of power produced by a particular solar panel is reduced.

The abnormal signal generator 330 generates an abnormal signal when a difference in power values compared by the power value comparator 320 exceeds a set error value.

The alarm unit 340 notifies the management personnel when an abnormal signal occurs. In this case, the alarm unit 340 may include an LED indicating an abnormality of a specific solar panel or emitting a speaker.

The abnormal state notification unit 350 transmits an abnormal state related to the abnormal signal by text SMS (short message service) or email when an abnormal signal is generated. Accordingly, the manager can immediately know that a problem has occurred in a specific solar panel even if the management server 300 is far away.

Thus, according to the smart photovoltaic power generation system according to the present application, when abnormal operation occurs in the solar panel constituting the photovoltaic device installed locally, it is possible to immediately know whether there is an abnormality of a specific solar panel even in a remote place, As a result, the manager can respond immediately and prevent the power generation efficiency from dropping.

In addition, even if the administrator is far from the management server, when the abnormal operation occurs in the photovoltaic device, the abnormal state is sent by text or e-mail, you can immediately check the abnormal state.

While the present invention has been described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.

100, 100 ', 100 "... solar power plant
10, 10 ', 10 "... solar panel 11, 11'. 11" ... junction box
20, 20 '20 "... Management sensor module 21 ... Power detection unit
22 ... temperature sensor 23 ... transmitter
24 ... ID input section 25 ... Display section
26 ... power protection unit 27 ... control unit
200, 200 ', 200 "... gateway
300 ... Management Server
310 ... receiver 320 ... power value comparison unit
330 ... abnormal signal generator 340 ... alarm
350 ... abnormal status notification part 360 ... control part

Claims (8)

Connected to a plurality of solar panels 10, 10 'and 10 ", respectively, a plurality of connection terminal boxes 11 and 11' for collecting voltage and current generated in the solar panel and outputting them to an inverter ( 11 ") and the connection terminal boxes 11, 11 ', and 11", respectively, for sensing the power generation state of the solar panel 10, 10' and 10 "and transmitting them wirelessly. It consists of the management sensor module 20, 20 '(20 "), the management sensor module 20, 20', 20" senses the power to generate a power detection signal by sensing the power of the solar panel A plurality of photovoltaic devices including a branch 21, a transmitter 23 for wirelessly transmitting the power detection signal, and an ID input unit 24 for inputting a unique ID corresponding to the corresponding solar panel. 100) 100 'and 100 ";
It is connected to each of the plurality of photovoltaic devices 100, 100 ', 100 "1: 1, and is transmitted from the plurality of management sensor modules 20, 20', 20" unique Gateways 200, 200 'and 200 "for wirelessly receiving a plurality of power detection signals having IDs and transmitting them through a network N; and
It is installed in a remote place to manage the integrated state of the photovoltaic device 100, 100 '(100 "), the unique ID transmitted from each of the gateway 200, 200', 200" Receiving unit 310 for receiving a plurality of power detection signals having a specific solar panel 10, 10 '(10 ") constituting the photovoltaic device (100, 100', 100"). A power value comparison unit 320 for comparing the detected power value corresponding to the power detection signal of the power unit with the normal power value that the specific solar panel 10, 10 ', 10 " An abnormal signal generator 330 for generating an abnormal signal when a difference between the detected power value and the normal power value exceeds a set error value, and an alarm unit 340 for notifying an abnormality of the specific solar panel when the abnormal signal is generated. Smart photovoltaic power generation system comprising a; management server (300) having. delete The method of claim 1, wherein the management sensor module 20, 20 ', 20 ",
Smart solar power generation system characterized in that it further comprises a temperature sensor 22 for measuring the temperature of the solar panel to generate a temperature signal. The method of claim 1, wherein the management sensor module 20, 20 ', 20 ",
Smart photovoltaic power generation system, characterized in that it further comprises a power protection unit 26 for protection from reverse voltage or surge voltage. The method of claim 1, wherein the power detection unit 21,
A voltage sensor 21a for sensing a voltage output from the solar panel, a current sensor 21b for sensing current output from the solar panel, and digitally converting the voltage and current values from analog signals. An analog / digital converter 21c for converting into a signal, and a digital filter 21d for extracting a desired digital value by removing noise from the digital signal converted by the analog / digital converter 21c. Smart solar power system, characterized in that. delete The method of claim 1, wherein the management server 300,
When the abnormal signal is generated smart photovoltaic power generation system, characterized in that it further comprises an abnormal state notification unit 350 for transmitting an abnormal state related to the abnormal signal by text or email. The method of claim 1,
The setting of the normal power value is a smart photovoltaic power generation system, characterized in that made in consideration of the temperature signal of the specific solar panel detected by the temperature sensor 22 of the management sensor module.

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