KR20200066115A - Solar cell voltage measurement system and individual fault diagnosis method using solar cell - Google Patents

Abstract

Disclosed is a solar cell voltage measurement system and a method for diagnosing individual failures of a solar cell using the same. The present invention is to measure the individual voltage value of a solar cell to determine whether there is an abnormal solar cell among the individual solar cells through the presence or absence of a voltage, a solar cell voltage measurement system and a method for diagnosing individual failures of the solar cell using the same As at least one solar cell; A voltage sensor for measuring the voltage of the electric energy generated by the solar cell generating; And one or more solar cell units connected to the solar cell and including a bypass unit which is a switch circuit for determining whether to transmit or receive electrical energy generated and generated by the solar cell. A controller communicatively connected to each of the one or more solar cell voltage sensors; A server unit communicatively connected to the controller; And it is communicatively connected to the server unit and includes a display unit including an input/output device.

Description

Solar cell voltage measurement system and individual fault diagnosis method using solar cell

The present invention relates to a voltage measurement system of a solar cell and a method for diagnosing individual failures of a solar cell using the same, and more specifically, by measuring an individual voltage value of the solar cell, there is an abnormality among the individual solar cells through the presence or absence of an abnormality in voltage. The present invention relates to a solar cell voltage measurement system capable of discriminating a solar cell and a method for diagnosing individual failures of the solar cell using the same.

Due to the depletion of fossil fuels and global warming due to the use of fossil fuels, the development and dissemination of alternative energy is urgent, and the government is pursuing a policy to gradually increase the share of alternative energy among domestic energy consumption.

Today, as the most environmentally friendly and infinite energy source among alternative energy, the solar power generation system that converts solar energy directly into electrical energy is in the spotlight, and with the support of the government, the supply is rapidly expanding. Such a photovoltaic power generation system is composed of a plurality of solar panel modules that convert solar light into electrical units, and is required by connecting a plurality of solar panel modules (hereinafter referred to as'solar cells') in series or in parallel. I am getting the power to do it. The typical solar power generation system is illustrated in FIG. 1.

As shown in Figure 1, a typical photovoltaic power generation system connects individual solar cells (C) in series to increase the voltage to make a row of solar cells, and connects the heat of these solar cells in parallel to make the current Increase the capacity and use it. When the solar cells connected with the above structure produce electric power, it is focused on the inverter I and processed and used in a required form.

However, in the solar power generation system using a plurality of solar cells C in series or in parallel as shown in FIG. 1, any one of the unit solar cells C constituting the system has an abnormality. If it is, there is a problem in that the entire heat of the solar cell (C), including the solar cell (C) where the problem occurs, is abnormal.

Such a photovoltaic power generation system may be more problematic because most of the installed places, such as the foot of a mountain, a roof of a building, and an idle place, are installed unattended and operated unattended.

Due to the above problems, it is very difficult to efficiently manage the solar cell after installation, and thus, a means for remotely diagnosing the state of the failure diagnosis or operation abnormality of each solar cell is required.

Means for diagnosing a malfunction of a solar cell or diagnosing an operation abnormality have been developed and provided in various forms. For example, Patent No. 10-1023445 provides a solar cell module remote monitoring and control system. The registered patent includes a solar cell module control device including a sensor detection unit and a switching unit that senses voltage and current, a connection terminal box equipped with the solar cell module control device, and a central control system. Provided is a solar cell module remote monitoring and control system that measures the state of the solar cell module according to a data transmission command and accordingly controls the operation state of each part.

In addition, Patent Publication No. 10-2014-0111744 provides a method for setting a wireless communication network of a photovoltaic power generation monitoring system. The disclosed patent proposes a method of combining a plurality of independent digital wireless communication networks identified by a PAN ID and installing a super network on the upper side to configure a digital wireless network to operate as a single large network.

And Patent Publication No. 10-2016-0126844 is a sequential wireless transmission system for monitoring data of a photovoltaic power generation facility, and Patent Registration No. 10-1777195 is a connection panel for a photovoltaic device having a remote monitoring monitoring system for photovoltaic power failure. It is disclosed.

It has been determined that the above-mentioned registered patents and published patents have different specific components and operation methods from the present invention. In addition, the monitoring and control methods of the solar cell disclosed in various ways are also configured and operated from the present invention. And so on.

The present invention is a configuration and method for performing individual failure diagnosis of a solar cell in a manner different from the prior art as described above, the purpose of which is to provide a voltage measurement system of a solar cell and a method for individually diagnosing a solar cell using the same. have.

The present invention to achieve the object of the present invention as described above,

A solar cell voltage measurement system used in a photovoltaic power generation system including at least one solar cell and an inverter, comprising: at least one solar cell; A voltage sensor for measuring the voltage of the electric energy generated by the solar cell generating; And one or more solar cell units connected to the solar cell and including a bypass unit which is a switch circuit for determining whether to transmit or receive electrical energy generated and generated by the solar cell. A controller communicatively connected to each of the one or more solar cell voltage sensors; A server unit communicatively connected to the controller; And it provides a solar cell voltage measurement system including a display unit including an input/output device, which is communicatively connected to the server unit.

In the above, at least two solar cell parts are configured, and the bypass parts of each of the solar cell parts are connected in series to form one or more solar cell strings as a unit, and each of the solar cell parts is connected in parallel to be connected to an inverter. desirable.

In the above, any one of the solar cell units in the solar cell array may further include and install a current sensor for measuring the current of electric energy generated by the solar cell.

In the above, the solar cell and the controller of each of the two or more solar cell units in the solar cell array is characterized in that it is communicatively connected in any one of a linear topology or a linear bus topology, the solar cell voltage measurement system.

The controller in the above is connected to the sensor to be communicatively connected to the voltage sensor; An operation unit including a voltage determination unit for determining whether the measured voltage value has failed and a control unit for controlling the operation of the bypass unit; Light sensor; And it includes a communication module that is communicatively connected to the server unit.

In the above, the server unit may include a schematization program.

As a method for diagnosing a solar cell failure using the above-described solar cell voltage measurement system, any one of the voltage sensors of one or more solar cell units detects that the electric energy voltage value generated by the solar cell is out of a normal range and detects a failure signal. A failure occurrence step (S1) of transmitting (F) to the controller; After the step (S1), the controller determines whether or not the failure is a failure step (S2); If it is determined as a failure in the step (S2), the bypass unit switching step (S3) for operating the bypass unit of the solar cell unit to which the voltage sensor that transmits the failure detection signal (F) belongs; A voltage index creation request step (S4), after the step (S3), the controller transmits a voltage index creation request (V.req) to any one of the voltage sensors of the one or more solar cell units; The voltage sensor, which received the voltage index creation request (V.req) through the step (S4), creates an all-dark index (V.index) and records and stores its identifiable ID information and status information, and updates it. A voltage index creation step (S5) of transmitting the updated voltage index (V. index) to another voltage sensor or controller connected communicatively with the user; When the updated voltage index (V.index) according to the step (S5) is received by the controller, the controller generates a voltage index (S6) for transmitting the voltage index (V.index) to the server unit; Then, when the server unit receives the voltage index (V.index) according to the step (S6), the received voltage index (V.index) is converted to a schematic voltage index (Vgindex) and transmitted to the display unit Through the schematically provided voltage index providing step (S7), a method for diagnosing a solar cell failure that can transmit information on a solar cell having a failure to an administrator is provided.

In the above, it is preferable that the state information of the voltage index (V. index) is divided into three types: a normal state, an anxiety state, and a fault state.

In the above, the voltage index (V. index) is created in the step (S5), the ID information and the status information are recorded and updated, and the updated voltage index (V. index) is connected for communication by itself. When transmitting to another voltage sensor, the other voltage sensor with the voltage index (V. index) records, updates, and stores its ID information and status information under the ID information and status information recorded by the previous voltage sensor. It is desirable to transmit it to another voltage sensor or controller that is communicatively connected to itself.

According to the present invention, it is possible to accurately diagnose and notify whether or not each of the solar cells has failed, regardless of the location of the manager while being economical without additional equipment.

1 is a schematic structural diagram of a conventional solar power system.
Figure 2 is a structural diagram of the solar power system of the present invention.
Figure 3 is a controller and server operation structure diagram of the solar power system of the present invention.
4 is a voltage index structure diagram of the present invention.
5 is a schematic voltage index structure diagram of the present invention.
Figure 6 is a flow chart of the individual fault diagnosis method of the solar cell using the voltage measurement system of the solar cell of the present invention.
[Description of codes]
10, 20: solar cell heat. 100, 200: solar cell unit.
110, 210: solar cells. 120, 220: voltage sensor.
130, 230: current sensor. 140, 240: bypass unit.
30: inverter. 40: controller.
410: sensor connection. 420: arithmetic unit.
421: voltage determination unit. 422: control unit.
430: light intensity sensor. 440: communication module.
50: server unit. 511, 512: individual DB
520: Schematic program. 60: display unit.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings. The following description is intended to aid in the implementation and understanding of the present invention, but not to limit the present invention thereto. Those skilled in the art will understand that various modifications and changes can be made within the spirit of the present invention described in the following claims.

2 is a structural diagram of a solar cell voltage measurement system of the present invention. Hereinafter, an operation configuration of the solar cell voltage measurement system of the present invention will be described with reference to FIG. 2.

The solar cell voltage measurement system of the present invention is used in a photovoltaic device using at least one solar cell 110. Preferably, at least one or more solar cells 110 are connected in series to form a solar cell A A 10 that is a unit of solar cells, and also one or more solar cells 210 are connected in series to form a solar cell column. By forming B 20, the solar cell A 10 and the solar cell B 20 are connected in parallel to be used in a photovoltaic device connected to the inverter 30.

Of course, the present invention is not only applied in the preferred form as described above, and another solar cell sequence other than the solar cell sequences A(10) and B(20) may be configured regardless of the number, and also one solar cell column Even if the number of solar cells is also connected in series, all of them can be used. Hereinafter, for convenience of description, as illustrated in FIG. 1, two solar cell arrays 10 and 20 will be described as an example.

In addition, prior to the description, in the structural diagram of FIG. 2, the part connected to each other by a solid line represents a power line through which the generated electrical energy is transmitted and received, and the dotted line represents a control connection relationship that can exchange signals or information with each other. , It is separated without a contact between the solid line and the dotted line and does not affect and exchange with each other.

As shown in FIG. 2, in the solar cell voltage measurement system of the present invention, at least one solar cell 110 and a current sensor 130 that measures a current of electric energy generated and generated by the solar cell 110. ), and the voltage sensor 120 for measuring the voltage, and the solar cell unit 100 by connecting the bypass unit 140 which is a switch circuit capable of transmitting and receiving power connected to the solar cell 110 in one unit. Make up.

At this time, since the solar cell unit 100 will be configured to be the same as the number of solar cell columns A 10 to which the corresponding solar cell 110 belongs, the solar cell unit 100 may be several days as illustrated in FIG. 1. Can be.

In this case, the voltage sensor 120, the current sensor 130, and the bypass unit are applied to only one of the plurality of solar cell units 100, 100a, 100b, and 100c to 100x belonging to the solar cell column A10. (140) is all equipped, the remaining solar cell portion (100a, 100b, 100c ~ 100x) is a current sensor is excluded from the configuration voltage sensor (120a, 120b, 120c ~ 120x) and bypass unit (140a, 140b, 140c~140x) are configured respectively.

In addition, all of the voltage sensors 120, 120a to 120x are linearly connected to enable signal transmission, and the bypass units 140, 140a to 140x are also connected in series to enable transmission of electric energy. Since the bypass units 140 and 140a to 140x do not operate normally, the connected solar cells can freely transmit power, so that the solar cells in the solar cell unit 100 can be connected in series.

Here, if any one of the bypass units, for example, the bypass unit 140a of the second solar cell unit 100a operates, the bypass unit in the solar cell thermal connection relationship of the solar cell A The solar cell unit 100a in which the 140a is operated is excluded, and the solar cell units 100 and 100b on both sides are directly connected. The roles of the remaining bypass parts are all the same, and since the configuration is to use a conventional bypass switching circuit, a detailed description thereof will be omitted.

The remaining solar cell B (20) in the above-described form is also configured. The components and connection forms are the same as those of the solar cell A (10), so a description thereof will be omitted.

In addition, in the solar cell column A (10), only the current sensor 130 and the voltage sensor 120 is installed on any one of the solar cell unit (100, 100a ~ 100x) belonging to, the rest of the voltage sensor (120a ~ 120x) The reason why each bay is installed is that all of the solar cells in the solar cell parts 100, 100a to 100x are connected in series, so if the current of the solar cells connected in series is measured only one of them, the current value of the remaining solar cells is known. Because it can. On the other hand, the voltage value may be different for each of the solar cells, and the voltage value of the electric energy produced by the solar cell A 10 is the electric energy voltage produced by each of the solar cell units 100, 100a to 100x. Since it will be the sum of the values, it must be installed as above.

As described above, the solar cell array A 10 and the solar cell array B 20 in which the internal solar cells are connected in series are connected in parallel again to connect to the inverter 30. The inverter 30 may be a conventional one, and the operation method is also the same as that of a conventional solar power system, so a detailed description of the inverter 30 will be omitted. However, the inverter 30 is connected so as to exchange signals and information with the controller 40, so that the inverter 30 can provide its own operation status information to the controller 40.

And the controller 40 is connected to the voltage sensors (120, 120a ~ 120x, 220, 220a ~ 220x) and the current sensor (130, 230) to receive the voltage and current values of the solar cells they measure respectively It determines and controls the state of the solar cells.

At this time, preferably, the network connection form of the voltage sensors (120, 120a ~ 120x, 220, 220a ~ 220x) and the controller 40 is a linear topology (Linear Topology) within each of the solar cells (10, 20) ) Or establish a communication connection relationship in the form of a linear bus topology.

Also, here, the current sensors 130 and 230 can be located anywhere as one of the components of the two topologies.

For example, if the connection relationship between the voltage sensors 120 and 120a to 120x in the solar cell A 10 is configured using a linear topology, one of the voltage sensors 120 is located at one end and the other end. The controller 40 is connected to the position.

As another example, if the connection relationship between the voltage sensors 120 and 120a to 120x in the solar cell A 10 is configured using a linear bus topology, the controller 40 is both sides of the linear bus topology. You can connect it to one of the ends.

In addition, the controller 40 is communicatively connected to the server unit 50. The server unit 50 updates and stores the current state of the solar cells 10 and 20, and also the voltage and current information of the solar cells 10 and 20 transmitted by the controller 40. It plays a role of collecting them and processing them for the convenience of the administrator.

At this time, it is preferable that the controller 40 and the server unit 50 are wirelessly connected.

In addition, the server unit 50 is communicatively connected to the display unit 60. The display unit 60 is a display screen that allows the administrator to visually check the state of the solar cells 10 and 20, and also the administrator through the server unit 50 and the controller 40, the It includes a series of input devices that allow control of the solar cell columns 10, 20.

The display unit 60 may use a conventional communication terminal such as a personal computer (PC) equipped with general input devices and a monitor, a smart phone, a PDA, or the like. At this time, the monitor and input devices in the display unit 60 are preferably configured as a GUI (Graphic User Interface).

3 is a structural diagram representing specific components and operating states of the controller 40, the server unit 50, and the display unit 60. Hereinafter, specific components of the controller 40, the server unit 50, and the display unit 60 will be described with reference to FIG. 3.

The controller 40 is a sensor connection unit 410, which is a terminal that can be connected to the current and voltage sensors of each of the solar cells 10 and 20 in a wired manner, and the sun in the solar cells 10 and 20. In order to determine whether the batteries have failed, a voltage determination unit 420 for determining whether the measured voltage value has failed, and a control unit 422 for controlling the operation of the solar cells 10 and 20 are included. To realize this, the computing unit 420 including one or more computing devices and storage devices such as a CPU or MPU, and one or more programs, and a light intensity sensor 430 for measuring the illuminance of the current sunlight, and the server unit ( 50) and a communication module 440 for wireless communication.

In addition, the server unit 50 includes a wireless communication device for wirelessly connecting to the controller 40, one or more computing devices and storage devices, and operating programs. The server unit 50 is a general PC or smart phone. , It can be implemented using a terminal such as a PDA, the description thereof will be omitted.

The server unit 50 implemented as described above includes solar cell DBs 511 and 512 that can individually update and store current and voltage value information of the solar cell columns 10 and 20, and the controller ( It includes a schematic program 520 to modify and process the voltage information transmitted from 40) to be provided to the display unit 60.

In addition, the display unit 60 also includes hardware and programs to provide the voltage information provided from the schematic program 520 to the administrator, and the detailed description thereof will be omitted.

4 and 5 show the components of the voltage index (V. index) and the diagrammatic voltage index (Vgindex) generated in the process of the fault diagnosis method of the present invention, Figure 6 is the voltage of the solar cell of the present invention It is a flow chart of the individual fault diagnosis method of the solar cell using the measurement system. Hereinafter, a method for individually diagnosing solar cells using the solar cell voltage measurement system of the present invention will be described with reference to FIGS. 2 to 6.

First, when the photovoltaic power generation facility configured as in FIG. 2 starts to operate, normal power generation will be achieved. After the power generation is performed, any one of the solar cells of the photovoltaic power generation facility, for example, the solar cell of the fourth solar cell unit 100c of FIG. 2 is damaged or malfunctioned, for some reason, such as electrical energy generated by itself. When the voltage value of is out of the normal range, first, the voltage sensor 120c of the fourth solar cell unit 100c detects that the electric energy voltage value generated by the fourth solar cell unit 100c is out of the normal range. Then, a failure occurrence step (S1) of transmitting the failure detection signal F to the controller 40 is performed.

Here, the failure detection signal F is measured by the identification information such as an identifiable unique number or ID of the solar cell unit 100c, and the voltage value and electric voltage value of electric energy generated by the solar cell unit 100c. It is preferable to include time information maintained.

The operation unit 420 of the controller 40 that has received the failure detection signal F through the step S1 determines whether the corresponding solar cell unit 100c is a failure based on the information in the failure detection signal F. A judgment step (S2) is performed to determine whether or not the failure occurs. If the operation unit 420 determines that the corresponding solar cell unit 100c is not a malfunction, such as determining that the corresponding solar cell unit 100c is temporary or within a normal range in step S2, the operation returns to the normal operation step. You can go.

In addition, if it is determined in step S2 that the corresponding solar cell unit 100c is a failure, the operation unit 420 is operated to operate the bypass unit 140c of the solar cell unit 100c determined to be a failure. Pass section transfer step (S3) is performed.

By excluding the solar cell unit 100c from the solar cell series relationship of the solar cell A 10 through the step S3, the quality of the electric energy produced by the solar cell A 10 is kept constant. In addition, it is possible to primarily prevent a safety accident due to malfunction or failure of the failed solar cell unit 100c.

In addition, in the step S3, when the controller 40 is communicatively connected to the inverter 30, additionally, the electric energy produced by the solar cell A 10 through the current sensor 130 An additional process of checking whether the bypass unit 140c in the malfunctioning solar cell unit 100c is clearly operated by measuring and calculating the current and voltage values of electrical energy input through the inverter 30 or by measuring the current value of You can also go through.

After the step (S3) is performed, a voltage index creation request step (S4) is performed to notify the administrator of the failure of the solar cell unit 100c.

At this time, the final destination of the voltage index creation request (V.req) generated by the operation unit 420 in step S4 and transmitted to the voltage sensors 120, 120a to 120x in the solar cell A10. In the network communication network between the controller and the voltage sensors, the voltage sensor at the opposite end of the controller 40 becomes the voltage sensor. For example, as shown in FIG. 2, when the network communication network is linearly formed as in the solar cell A 10, the final destination is the voltage sensor 120 at the end of the linear network communication.

Likewise, even if a network is formed between the controller and voltage sensors in a linear bus topology, since the controller is located at one end of the linear bus topology network, as described above, the voltage index creation request (V.req) The final destination is a voltage sensor located at the edge of the other end.

In addition, at this time, the voltage index creation request (V.req) is sent to the remaining solar cells connected to the controller 40, such as the solar cell B (20), as well as the solar cell A (10) where the failure occurred. You may be asked to write a voltage index for.

When the voltage index preparation request (V.req) arrives at the destination voltage sensor 120 through the step S4, the voltage sensor 120 sets the voltage index (V. index) according to a previously input program. The voltage index creation step (S5) to be performed is performed.

The form of the voltage index (V. index) is disclosed in FIG. 4. As disclosed in FIG. 4, the voltage index (V. index) is identifiable ID information (S/C ID) such as a unique number or name of each solar cell part of the corresponding solar cell column A 10 and the corresponding solar cell. Contains status information (Status) indicating the status of the wealth.

At this time, the status information (Status) should be divided into at least two stages, that is, a normal status and a failure status, and preferably, it is preferable to divide and divide it into three or more stages of a normal status, an anxiety status, and a failure status.

With respect to the above steps, the normal state is an indication that the corresponding solar cell unit is normally performing electrical energy generation within a predetermined voltage range, and the anxiety state is not considered to be a failure, but a value such as the voltage of the electric energy generated by the solar cell unit is It is an indication that the solar cell unit needs to be inspected later by the administrator because it is unstable or there is a problem with other components other than the solar cell, and the failure state is a failure of the solar cell or electrical energy production through step S3. The solar cell part that is excluded from is indicated.

Hereinafter, it will be described as an example that the status information (Status) is divided into three steps as described above.

As described above, the voltage sensor 120 located at the edge of the network generates a voltage index (V. index), records and stores its ID information (S/C ID) and status information (Status), and then The voltage index (V. index) is transmitted from the network to the voltage sensor 120a next to itself.

In addition, the voltage sensor 120a, which has received the voltage index (V. index), records and updates its ID information (S/C ID) and status information under the information of the previous voltage sensor 120. After saving, the updated voltage index (V. index) is transferred back to another voltage sensor 100b connected to the next one. The voltage sensor 100b additionally records its ID information (S/C ID) and status information (Status) under the information of the previous voltage sensor 120a in the manner described above and transmits it to the next voltage sensor 100c.

In this way, as the voltage index (V. index) is sequentially updated, all ID information (S/C ID) and status information (Status) of the solar cells in the solar cell A (10) of the Santi form are shown in FIG. 4. Recorded as and transmitted to the controller 40, the step (S5) can be completed.

In addition, the voltage index of the solar cell column to the other solar cell line 20 is completed and can be transmitted to the controller 40. It is preferable that the arithmetic unit 420 of the controller 40 captures and stores the voltage indexes (V. index) in its memory device.

When the voltage index (V. index) of the solar cells completed according to the step (S5) is received by the controller 40, the operation unit 420 of the controller 40 passes through the communication module 440 to the server The voltage index (V. index) of the solar cells is transmitted to the unit 50, and the schematic program 520 of the server unit 50 receives the transmitted voltage index (V. index) and plots the voltage index. A schematic voltage index generation step (S6) for generating (Vgindex) is performed.

The form of the schematic voltage index (V.g.index) is shown in FIG. 5. The diagrammatic voltage index (Vgindex) is a collection of all the voltage indexes (V.index) of the received solar cells and represents the state of each solar cell in color. The normal state is green, the anxious state is yellow, and the failure state Separated by red. The administrator can quickly and effectively identify and respond to which solar cell is in a fault condition and anxious state by receiving the schematic voltage index (V.g.index) in the schematic voltage index provision step (S7).

In addition, in the step (S6), the schematic program 520 is based on the information in each of the voltage index (V.index) in the individual DB (511, 512) of the solar cells (10, 20) the solar cell The contents of the individual DBs 511 and 512 may be updated and stored. The administrator can check the recent state of the solar cells 10 and 20 by referring to any one of the individual DBs 511 and 512 through the display unit 60.

Claims (9)

A solar cell voltage measurement system used in a photovoltaic power generation system including at least one solar cell and an inverter,
At least one solar cell; A voltage sensor for measuring the voltage of the electric energy generated by the solar cell generating; And at least one solar cell unit connected to the solar cell and including a bypass unit that is a switch circuit to determine whether to transmit or receive electrical energy generated and generated by the solar cell.
A controller communicatively connected to each of the one or more solar cell voltage sensors;
A server unit communicatively connected to the controller;
And it is communicatively connected to the server unit, characterized in that it comprises a display unit including an input and output device, a solar cell voltage measurement system. The method of claim 1, wherein the solar cell unit is composed of at least two or more, the bypass unit of each of the solar cell units are connected in series to form one or more solar cell strings that are unit units, and each of the solar cell units is connected in parallel to an inverter. Solar cell voltage measurement system, characterized in that connected to the. The solar cell voltage measurement system according to claim 2, wherein a current sensor for measuring the current of electric energy generated by the corresponding solar cell is additionally installed in any one of the solar cell units in the solar cell column. . The solar cell voltage measurement system according to claim 2, wherein the solar cell and the controller of each of the two or more solar cell units in the solar cell array are communicatively connected in either a linear topology or a linear bus topology. . According to claim 1,
The controller includes a sensor connection unit communicatively connected to the voltage sensor; An operation unit including a voltage determination unit for determining whether the measured voltage value has failed and a control unit for controlling the operation of the bypass unit; Light sensor; And a communication module communicatively connected to the server unit. The system of claim 1, wherein the server unit includes a schematic program. A method for diagnosing a failure of a solar cell using the solar cell voltage measurement system of claim 1,
A failure occurrence step (S1) in which one of the voltage sensors of each of the one or more solar cell units detects that the electric energy voltage value generated by the solar cell is out of a normal range and transmits a failure detection signal F to the controller;
After the step (S1), the controller determines whether or not the failure is a failure step (S2);
If it is determined as a failure in the step (S2), the bypass unit switching step (S3) for operating the bypass unit of the solar cell unit to which the voltage sensor that transmits the failure detection signal (F) belongs;
A voltage index creation request step (S4), after the step (S3), the controller transmits a voltage index creation request (V.req) to any one of the voltage sensors of the one or more solar cell units;
The voltage sensor, which has received the voltage index creation request (V.req) through the step (S4), creates an all-dark index (V.index) and records and stores its own identifiable ID information and status information, and updates it. A voltage index creation step (S5) of transmitting the updated voltage index (V. index) to another voltage sensor or controller connected communicatively with the user;
When the updated voltage index (V.index) according to the step (S5) is received by the controller, the controller generates a voltage index (S6) for transmitting the voltage index (V.index) to the server unit;
When the server unit receives the voltage index (V.index) according to the step (S6), a schematic diagram of converting the received voltage index (V.index) to a schematic voltage index (Vgindex) and transmitting it to the display unit A method of diagnosing a solar cell failure, characterized in that information on a solar cell having a failure is transmitted to a manager through the provided voltage index providing step (S7). The method for diagnosing a solar cell failure according to claim 7, wherein the status information of the voltage index (V. index) is divided into three types: a normal state, an anxiety state, and a fault state. 8. The method of claim 7, wherein in step (S5), a voltage index (V. index) is created and recorded and updated by storing ID information and status information, and the updated voltage index (V. index) is communicated by itself. When transmitting to another possible voltage sensor, the other voltage sensor with the voltage index (V. index) records and updates its ID information and status information under the ID information and status information recorded by the previous voltage sensor. After storing it by storing it and transmitting it to another voltage sensor or controller that is communicatively connected to it, the solar cell failure diagnosis method.

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