KR20120131706A - Smart photovoltaic power generation system - Google Patents

Abstract

PURPOSE: A smart solar power generation system is provided to instantly confirm malfunctions by transmitting abnormal operation of a solar power generation apparatus through a text message or e-mail. CONSTITUTION: A plurality of solar battery panels generates power by collecting energy from the sunlight. A plurality of access terminal cases outputs voltage and current by collecting the voltage and the current generated from the solar battery panels. A management sensor module(20,20',20") wirelessly transmit the generation state of the solar battery panel by sensing the generation state of each solar battery panel. A management server manages the generation state of a solar power generation apparatus. One or more gateways transmit a plurality of signals transmitted from the management sensor module to the management server. [Reference numerals] (21) Power sensing unit; (22) Temperature sensing unit; (23) Transmission unit; (24) ID input unit; (25) Display unit; (26) Power protection unit; (27) Control unit

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 remotely located.

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, a plurality of solar panels (10) (10 ') (10 ") to collect energy from sunlight and produce power, respectively A plurality of connection terminal boxes (11) (11 ') (11 ") for collecting voltage and current generated from the solar panel (10) (10') 10" of the solar cell panel and outputting them to the inverter, One or more photovoltaic devices 100 configured by management sensor modules 20, 20 ′, 20 ″ for sensing the power generation state of the solar panels 10, 10 ′, 10 ″ and transmitting them wirelessly. A management server 300 for managing a power generation state of the photovoltaic device 100 as installed at a remote location; and a plurality of signals transmitted from the management sensor modules 20, 20 ', 20 ". At least one gateway (200, 200 ', 200 ") for receiving and transmitting to the management server 300 through the network (N); .

In the present invention, the management sensor module 20, 20 '(20 "), the power sensor 21 for generating a power detection signal by detecting the power of the solar panel and the wireless power detection signal Transmitting unit 23 for transmitting to, and ID input unit 24 for inputting the ID corresponding to the corresponding solar panel.

In the present invention, the management sensor module 20, 20 ', 20 "further includes a temperature sensor 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 detector 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, the receiving unit 310 for receiving a signal transmitted from each of the gateways 200, 200 ', 200 ", and the photovoltaic device 100 ( Detected power values corresponding to the power sensing signals of the specific solar panels 10, 10 ', 10 "constituting the 100', 100", and the specific solar panels 10, 10 ', 10' Power value comparison unit 320 for comparing the normal power value that can be produced in the normal state with ") and an abnormal signal generation that generates an abnormal signal when the difference between the detected power value and the normal power value exceeds a set error value. A part 330; And an alarm unit 340 notifying an abnormality of the specific solar panel when an abnormal signal is generated. At this time, the management server 300, when the abnormal signal is generated further includes an abnormal state notification unit 350 for transmitting the abnormal state related to the abnormal signal by text or email, the setting of the normal power value is the temperature detection In consideration of the temperature signal of the particular solar panel detected by the unit 22.

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 panels (10, 10 ') (10 ") to collect energy from sunlight to produce power, and each solar panel (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 by the power supply and a temperature signal related to the ambient temperature.

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. A temperature sensing unit 22 for measuring a temperature of a temperature generating a temperature signal, a transmitter 23 for wirelessly transmitting a power sensing signal and a temperature signal, and an ID input unit for inputting an ID corresponding to the corresponding solar cell panel ( 24, a display unit 25 for displaying the operating state of the solar cell panel, a power supply protection unit 26 for protecting against reverse voltage or surge voltage, a power sensing unit 21, a temperature sensing unit 22, a transmitting unit And a control unit 27 organically connected to 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 gives a unique ID corresponding to each of the solar panels 10, 10 ', 10 ", each ID should not overlap. ID input unit 24 is each solar cell By assigning unique IDs corresponding to the panels 10, 10 'and 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 no ID is given, it is not possible 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 ") Serves as a repeater for receiving a plurality of signals having a unique ID transmitted from the management sensor module 20, 20 ', 20" and then transmitting them to the management server 300 through the network (N) Do it.

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 signals transmitted from the gateways 200, 200 'and 200 "connected to the power generators 100, 100' and 100" through a network N, and received Analyze the signal to check and manage the photovoltaic device and solar panel panel constituting the photovoltaic device.

To enable this, as shown in FIG. 5, the management server 300 includes a receiver 310 for receiving a plurality of signals transmitted from each of the gateways 200, 200 ′, 200 ″, and sunlight. The detection power value corresponding to the power detection signal of the specific solar panel 10, 10 ′, 10 ″ constituting the power generation device 100, 100 ′, 100 ″ and the specific solar panel 10. The power value comparison unit 320 compares the normal power values that can be produced in the normal state with the 10 'and 10 " An abnormal signal generating unit 330 generated; 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 reception unit 310 receives the power detection signal generated by the power detection unit 21 and the temperature signal 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 particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

100, 100 ', 100 "... solar power plant
10, 10 ', 10 "... solar panel 11, 11'. 11" ... junction box
20, 20 '20 "... Management Sensing Module 21 ... Power Sensing 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)

A plurality of solar panels 10, 10 ′, 10 ″, which generate energy by collecting energy from sunlight, and voltages generated by the solar panels 10, 10 ′, 10 ″, respectively. A plurality of connection terminal boxes 11, 11 ', 11 "for collecting excess current and outputting them to the inverter, and sensing the power generation state of each of the solar panel 10, 10', 10" At least one photovoltaic device 100 configured as a management sensor module 20, 20 ′, 20 ″ for wireless transmission;
A management server 300 for managing a power generation state of the photovoltaic device 100 as installed at a remote location; And
One or more gateways 200 and 200 'that receive a plurality of signals transmitted from the management sensor modules 20, 20' and 20 "and transmit them to the management server 300 through the network N. 200 "); Smart photovoltaic power generation system comprising a. The method of claim 1, wherein the management sensor module 20, 20 ', 20 ",
A power detector 21 for sensing power of the solar panel to generate a power detection signal, a transmitter 23 for wirelessly transmitting the power detection signal, and an ID corresponding to the corresponding solar panel Smart photovoltaic power generation system comprising an ID input unit (24). The method of claim 2, 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 2, 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 2, 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. The method of claim 1, wherein the management server 300,
Receiving unit 310 for receiving a signal transmitted from each of the gateways 200, 200 'and 200 ", and specific solar cells constituting the photovoltaic devices 100, 100' and 100" The detection power value corresponding to the power detection signal of the panels 10, 10 'and 10 " and the normal power value that the specific solar panel 10, 10' and 10 " A power value comparing unit 320 for comparing with each other, an abnormal signal generating unit 330 for generating an abnormal signal when a difference between the detected power value and the normal power value exceeds a set error value; Smart signal generation system comprising a; alarm unit 340 for informing the abnormality of the specific solar panel when the abnormal signal is generated. The method of claim 6, 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 according to claim 6,
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 sensing unit (22).

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