JP2015162520A - Display device, portable terminal and connection display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the time required for identifying a PV panel which requires maintenance service by a worker in a string determined as failed in a photovoltaic power generation system to thereby increase the work efficiency of the worker.SOLUTION: A display device includes: a display unit capable of displaying at least a part of a photovoltaic power generation system which includes plural solar panels; an operation unit capable of selecting an electrical element constituting at least a part of the photovoltaic power generation system; and a control unit that controls the display unit to display electrical connection state of the electrical element selected by the operation unit.

Description

  The present invention relates to a display device, a portable terminal, and a connection display method used in maintenance work of a photovoltaic power generation system.

  2. Description of the Related Art Conventionally, a solar power generation system that generates power by converting solar energy into electrical energy using a solar power generation panel (hereinafter referred to as a “PV (Photo Voltaic) panel”) has been widespread. In the photovoltaic power generation system, no waste, drainage, noise, or vibration is generated during power generation, and it is expected to be used as an emergency power source.

  Because PV panels are often installed outdoors due to the characteristics of the photovoltaic power generation system, when operating the photovoltaic power generation system, regular maintenance is performed so that the PV panel does not break down, and it is determined that there is a malfunction. It is important to perform a maintenance operation for repairing the PV panel. However, since the installation range of the photovoltaic power generation system is often wide, it is never easy for workers who perform maintenance work to know the position information of the PV panel to be worked as the installation range of the photovoltaic power generation system is wider. Absent.

  Here, a solar power generation system shown in Patent Document 1 is known as a prior art that acquires position information of a solar battery panel of a solar power generation system with a simple configuration.

  In the solar power generation system shown in Patent Literature 1, the maintenance terminal acquires the identification information of the solar battery panel, acquires the position information indicating the position of the maintenance terminal as the position information of the solar power generation panel, and via the data logger. Sent to the central management device. Each solar cell panel transmits its own identification information and state data indicating the operation state to the centralized management device via the data logger. The centralized management device stores state data in association with identification information and position information of each solar cell panel, identifies a solar cell panel having an abnormality from the state data, and identifies and identifies the specified solar cell panel Is output.

JP 2011-181853 A

  In a large-scale photovoltaic power generation system called a mega solar, for example, hundreds to thousands of PV panels are often installed. In the maintenance work in such a photovoltaic power generation system, the worker, after arriving at the installation location of the PV panel determined to be abnormal, visually observes the string including the PV panel determined to be abnormal, An attempt is made to check how abnormal a PV panel is determined to be abnormal in the string. In this case, if it is not clear how the plurality of PV panels are connected in the string, the maintenance work efficiency of the worker is deteriorated.

  In the configuration of Patent Document 1 described above, navigation information for arriving at the installation location of a string including a PV panel that is determined to be abnormal among strings configured by a plurality of PV panels is displayed on the screen of the maintenance terminal. Is done. However, after the worker arrives at the installation location of the string to be maintained, the connection relationship between the PV panel determined to be abnormal and another PV panel is not specifically shown.

  Therefore, in order to solve the above-described conventional problems, the present invention is for a worker to specify a PV panel that is subject to maintenance in a string determined to be abnormal in a photovoltaic power generation system. It is an object of the present invention to provide a display device, a portable terminal, and a connection display method that reduce the time required and suppress the deterioration of work efficiency of workers.

  The present invention includes a display unit capable of displaying at least a part of a solar power generation system including a plurality of solar panels, an operation unit capable of selecting an electrical element constituting at least a part of the solar power generation system, And a control unit that causes the display unit to display an electrical connection state of the electrical element selected by the operation unit.

  In addition, the present invention can detect a display unit capable of displaying at least a part of a photovoltaic power generation system including a plurality of solar panels, and an abnormality of an electrical element constituting at least a part of the photovoltaic power generation system. An abnormality detection unit; a control unit that displays an electrical connection relationship of electrical elements detected by the abnormality detection unit on the display unit; a power storage unit that can store electric power and that can supply power to the display unit; Are portable terminals.

  Further, the present invention is a connection display method in a display device used in a solar power generation system including a plurality of solar panels, the step of displaying at least some electrical elements of the solar power generation system, A connection display method comprising: receiving a selection of at least a part of an electrical element of a photovoltaic power generation system; and displaying an electrical connection relationship of the selected electrical element.

  According to the present invention, in a photovoltaic power generation system, the time required for an operator to specify a PV panel to be maintained in a string determined to be abnormal can be shortened, and the work efficiency of the worker can be reduced. Can be prevented.

The figure which shows an example of the system configuration | structure of the solar energy power generation system of this embodiment The block diagram which shows an example of the hardware constitutions of the string monitor cordless handset of this embodiment in detail The block diagram which shows an example of the hardware constitutions of the string monitor main | base station of this embodiment in detail The block diagram which shows the hardware constitutions of the portable terminal of this embodiment in detail The figure which shows an example of the screen by which the data which show the present position of a portable terminal were displayed on the string map data which shows each installation place of the string in the photovoltaic power generation system of this embodiment, a connection box, and a power conditioner (A) The figure which shows the example of a display of the connection relation of the connection box connected with the selected string and the power conditioner connected to this connection box according to selection operation of a specific string, (B) The figure which shows the example of a display of the connection relation of each connection box connected with the selected inverter and the some string connected to each connection box according to selection operation of a specific inverter The figure which shows the example of a display of the concrete connection relation of the some PV panel which forms the selected string according to selection operation of a specific string Explanatory drawing of the example which carries out audio | voice output from the dedicated terminal attached to the string monitor cordless handset provided corresponding to the applicable string, or the pole installed in the circumference according to the selection operation of the string judged to be abnormal In response to a string selection operation determined to be abnormal, the signal level displayed on the receiving terminal that receives a signal of a specific frequency transmitted from the string monitor slave unit provided corresponding to the corresponding string is used. Explanatory diagram of an example of guiding the installation location of the corresponding string to the worker Block diagram showing in detail the hardware configuration of the receiving terminal shown in FIG.

  Hereinafter, the contents of an embodiment (hereinafter referred to as “the present embodiment”) of a display device, a portable terminal, and a connection display method according to the present invention will be described with reference to the drawings. The display device and the mobile terminal of the present embodiment are used by, for example, a maintenance worker who performs maintenance work in a solar power generation system including one or more strings in which a plurality of PV panels are connected in series. However, the display device or the portable terminal of the present embodiment is not limited to that used by a maintenance worker of the solar power generation system. The present invention can also be a connection display method that defines an example of the operation of a display device or a mobile terminal.

  Moreover, in the photovoltaic power generation system including the display device or portable terminal described below, a configuration in which a plurality of PV panels are connected in series is referred to as a “string”.

(System configuration of the photovoltaic power generation system of this embodiment)
First, the system configuration of the photovoltaic power generation system 100 of the present embodiment will be described with reference to FIG. FIG. 1 is a diagram illustrating an example of a system configuration of a photovoltaic power generation system 100 according to the present embodiment. 1 includes one or more strings STR1, STR2, STR3, string monitor slave units MSL1, MSL2, MSL3 that are compatible with wireless communication, a connection box 40, a power conditioner 50, and a mobile phone. This is a configuration including a terminal 60, a string monitor master device MMS compatible with wireless communication, a data logger 80, and a monitor server 90. In the photovoltaic power generation system 100 shown in FIG. 1, three strings are shown for ease of explanation, but the number of strings formed is not limited to three.

  The strings STR1, STR2, and STR3 have a configuration in which a plurality of solar panels (PV panels) are connected in series. For example, in FIG. 1, five PV panels are connected in series in each string. Specifically, in the string STR1, the PV panel 11A1, the PV panel 11A2, the PV panel 11A3, the PV panel 11A4, and the PV panel 11A5 are connected in series. In the string STR2, the PV panel 12A1, the PV panel 12A2, and the PV panel 12A3 are connected. The PV panel 12A4 and the PV panel 12A5 are connected in series, and in the string STR3, the PV panel 13A1, the PV panel 13A2, the PV panel 13A3, the PV panel 13A4, and the PV panel 13A5 are connected in series. Since the operations of the PV panels shown in FIG. 1 are the same, hereinafter, in the description of the PV panel and the string monitor slave unit, the PV panel 11A1 and the string monitor slave unit MSL1 are exemplified.

  The PV panel 11A1 includes a solar cell having a power generation function for converting solar energy into electrical energy (for example, direct current power) by a photoelectric effect, and more specifically, a plurality of solar cells are arranged according to a predetermined arrangement. Solar cell module. For example, in the string STR1, the PV panel 11A1, the PV panel 11A2, the PV panel 11A3, the PV panel 11A4, and the PV panel 11A5 are connected in series on a power line (see FIG. 1). The string STR1 includes a string monitor element as an example of a wireless measuring instrument that measures a predetermined physical quantity (for example, generated electric energy, generated electric current) obtained by the photoelectric effect of each PV panel 11A1, 11A2, 11A3, 11A4, 11A5. A machine MSL1 is provided.

  In the photovoltaic power generation system 100 shown in FIG. 1, the power line connecting the string STR1, the power line connecting the string STR2, and the power line connecting the string STR3 are connected in parallel, and the power lines connecting each string individually are connected. Concentration in the box 40 forms a solar cell array (PV array). In FIG. 1, one PV array is formed by a total of three strings STR1, STR2, and STR3. However, the number of strings for forming one PV array is not limited to three.

  The string monitor slave unit MSL1 as an example of a wireless measuring device periodically measures a predetermined physical quantity in the PV power generation of the PV panels 11A1 to 11A5, and transmits measurement result data to the string monitor master unit MMS by wireless communication. When the measurement period of the string monitor slave unit MSL1 is, for example, 10 minutes and the daylight duration of the day is from 10 am to 3 pm, the string monitor slave unit MSL1 is 10 minutes in total per day × 5 = Measure 50 times. Moreover, the string monitor slave unit MSL1 may control the generated power (power generation amount) of the PV panel 11A1 in which the string monitor slave unit MSL1 is installed. That is, the string monitor slave unit MSL1 detects the generated power (DC power) of the PV panel 11A1 connected to the string monitor slave unit MSL1, and controls the generated power (DC power) to be the desired power. Also good. Note that the desired power may be different or the same for each string monitor slave unit depending on, for example, the installation direction, installation location, or sunshine condition of each PV panel connected to each string monitor slave unit.

  The string monitor slave unit MSL1 may perform MPPT (Maximum Power Point Tracking) control on the PV panel 11A1 connected to the string monitor slave unit MSL1. MPPT control is a control technique for causing each PV panel connected to the string monitor slave unit to output the maximum amount of power generation. MPPT control is realizable by a well-known technique, for example, the hill-climbing method is used.

  Here, the detailed internal configuration of the string monitor slave unit MSL1 will be described with reference to FIG. FIG. 2 is a block diagram showing in detail an example of the hardware configuration of the string monitor slave unit MSL1 of the present embodiment. As described above, each of the string monitor slave units MSL2 and MSL3 shown in FIG. 1 has the same configuration as the string monitor slave unit MSL1. The string monitor slave unit MSL1 shown in FIG. 2 includes a power supply unit SL1, a control unit SL2, a current detection unit SL3, a voltage detection unit SL4, a wired communication unit SL5, a wireless communication unit SL6, and a position information acquisition unit SL7. And a notification unit SL8, an input terminal INP1, and an output terminal OUT1. Note that the wired communication unit SL5 and the wireless communication unit SL6 have, for example, a communication function with the string monitor master device MMS, and at least one of them may be provided.

  The string monitor slave unit MSL1 monitors the generated power of the PV panel 11A1 by passing the output of the PV panel 11A1, for example, the generated power as it is from the input terminal INP1 side to the output terminal OUT1 side.

  The power supply unit SL1 supplies, for example, power necessary for the operation of each unit in the string monitor slave unit MSL1 by receiving the output of the PV panel 11A1, that is, the supply of generated power.

  The control unit SL2 includes a processor (for example, a CPU (Central Processing Unit), an MPU (Micro Processing Unit) or a DSP (Digital Signal Processor)) and a memory (for example, a ROM (Read Only Memory)), and is stored in the memory in the processor. By executing the program, various signals are executed, and further, a control signal for causing each unit to execute predetermined signal processing is output.

  For example, the control unit SL2 multiplies the power generation current from the PV panel 11A1 detected by the current detection unit SL3 by the output voltage from the PV panel 11A1 detected by the voltage detection unit SL4, so that the PV panel 11A1 Output power (generated power) is calculated. Further, the control unit SL2 outputs at least one data of the output power, the output current, and the output voltage of the PV panel 11A1 to the wired communication unit SL5 or the wireless communication unit SL6 as measurement result data in the photovoltaic power generation of the string STR1. . The output power and output voltage of the PV panel 11A1 do not correspond to the power and voltage of the string STR1, but the output current of the PV panel 11A1 corresponds to the current of the string STR1. Therefore, the output current is preferably transmitted as measurement result data via the wired communication unit SL5 or the wireless communication unit SL6. Thereby, the administrator of the photovoltaic power generation system 100 can grasp the state of the string STR1 more accurately.

  Further, the control unit SL2 may determine whether there is an abnormality in the string STR1. Specifically, the control unit SL determines an abnormality in the string STR1 by comparing the measurement result data with a predetermined threshold value. The measurement result data used for abnormality determination may be output power, output current, or output voltage of the PV panel 11A1. However, since the output current of the PV panel 11A1 corresponds to the current of the string STR1 as described above, the erroneous determination of the abnormality determination in the string STR1 can be suppressed by performing the abnormality determination using the output current.

  For example, when the PV panel 11A5 fails, the output of the PV panel 11A5 decreases, so the current flowing through the string STR1 decreases. That is, the output current of the PV panels 11A1 to 11A4 also decreases. Therefore, even when any one of the PV panels 11A1 to 11A5 constituting the string STR1 fails, the output current of other PV panels that operate normally decreases. Thereby, even when the string monitor slave unit MSL1 is not provided in all the PV panels 11A to 11A5 constituting the string STR1 as in the solar power generation system 100, the string monitor is monitored by monitoring the output current of the PV panel 11A1. Failure of other PV panels 11A2 to 11A5 that are not provided with the handset MSL1 can also be easily detected. That is, erroneous detection of abnormality determination in the string STR1 can be suppressed.

  Further, the predetermined threshold value used for determining the abnormality of the string STR1 may be a fixed value determined in advance, a value changed according to conditions, or a value calculated by a plurality of parameters. However, in order to suppress erroneous detection of abnormality determination, the predetermined threshold value is preferably a value based on the measurement result data of the plurality of strings STR1 to STR3. For example, the average value of the measurement result data of the plurality of strings STR1 to STR3, a value obtained by adding a predetermined value to the average value, or a value obtained by subtracting the average value.

  For example, in the cloudy time zone, the photovoltaic power generation system 100 generally decreases output power, output current, and output voltage. Under this environment, although the PV panels 11A1 to 11A5 are not out of order, the output is reduced. At this time, if the predetermined threshold is a value based on the measurement result data of the plurality of strings STR1 to STR3, the predetermined threshold is also set to a low value. Accordingly, each of the string monitor slave units MSL <b> 1 to MSL <b> 3 can suppress erroneous detection of abnormality determination because the predetermined threshold value for comparing the measurement result data is a value according to the environment of the photovoltaic power generation system 100.

  As will be described later, whether or not each of the strings STR1 to STR3 shown in FIG. 1 is abnormal may be determined by the string monitor slave units MSL1 to MSL3, or the string monitor master unit MMS, the portable terminal 60, and the data logger 80. Alternatively, it may be determined by any one or more devices of the monitor server 90.

  Further, the control unit SL2 acquires the position information of the string monitor slave unit MSL1 output from the position information acquisition unit SL7, and outputs it to the wired communication unit SL5 or the wireless communication unit SL6.

  In addition, the control unit SL2 sends a specific operation control signal (see later) from the string monitor master unit MMS to the wired communication unit SL5 or the wireless communication unit SL6 in accordance with an input operation of a maintenance worker holding the portable terminal 60 described later. Is received, the specific operation corresponding to the specific operation control signal is executed. The specific operation is executed to guide a maintenance worker in the installation range (installation area) of the photovoltaic power generation system 100 from a current position of the maintenance worker to a string determined to be abnormal. Is the action. The specific operation of the present embodiment includes, for example, outputting a predetermined sound, turning on light of a predetermined color by an LED (Light Emitting Diode), and transmitting a signal having a specific frequency. The description regarding these specific operations will be described later with reference to FIG. 8 or FIG.

  The current detection unit SL3 is configured by using, for example, a known current detection circuit, detects a generated current (output current) from the PV panel 11A1 connected to the string monitor slave unit MSL1, and outputs detection result data to the control unit SL2. Output to.

  The voltage detection unit SL4 is configured using, for example, a known voltage detection circuit, detects an output voltage from the PV panel 11A1 connected to the string monitor slave unit MSL1, and outputs detection result data to the control unit SL2.

The wired communication unit SL5 performs wired communication with the other string monitor slave units MSL2, MSL3, the string monitor master unit MMS, or the power conditioner 50 by, for example, power line communication (PLC) using a power line.
For example, the wired communication unit SL5 transmits the measurement result data in the solar power generation output from the control unit SL2, the position information of the string monitor slave unit MSL1, and the determination result data on the presence / absence of abnormality of the string STR1 to the string monitor master unit MMS. May be. Note that the type of wired communication is not limited to power line communication.

The wireless communication unit SL6 is a string monitor master unit by wireless communication corresponding to a predetermined communication standard (for example, including DECT (Digital Enhanced Cordless Telecommunication), wireless LAN (Local Area Network), or Zigbee (registered trademark)). Wireless communication is performed with the MMS or the power conditioner 50.
For example, the wireless communication unit SL6 transmits the measurement result data in the solar power generation output from the control unit SL2, the position information of the string monitor slave unit MSL1, and the determination result data on the presence / absence of abnormality of the string STR1 to the string monitor master unit MMS. May be. However, if the string monitor slave unit MSL1 does not determine whether or not the string STR1 is abnormal, the wireless communication unit SL6 omits transmission of the determination result of whether or not the string STR1 is abnormal to the string monitor master unit MMS. May be.

  The position information acquisition unit SL7 is configured using, for example, a GPS (Global Positioning System) receiver, acquires data indicating the position information of the string monitor slave unit MSL1, and outputs the data to the control unit SL2. In the photovoltaic power generation system 100 shown in FIG. 1, the position information of the string monitor slave unit MSL1 is acquired using an external terminal having a GPS function when the string monitor slave unit MSL1 is installed. The identification information of STR1 and the identification information of string monitor slave unit MSL1 may be registered (saved) in advance in control unit SL2. By doing so, the configuration of the position information acquisition unit SL7 can be omitted from the string monitor slave unit MSL1.

  When the wired operation unit SL5 or the wireless communication unit SL6 receives the specific operation control signal from the string monitor base unit MMS, the notification unit SL8 outputs a predetermined sound according to the control signal from the control unit SL2, and the LED To turn on light of a predetermined color or transmit a signal of a specific frequency. Thereby, the string monitor slave unit MSL1 outputs a predetermined sound when, for example, it is determined that an abnormal string is the string STR1, and lights a predetermined color by the LED, or a signal of a specific frequency. By transmitting, it is possible to shorten the time required for specifying the location of the string to be subjected to the maintenance work to the maintenance worker.

  The input terminal INP1 is connected to the PV panel 11A1 and receives an output from the PV panel 11A1. The output terminal OUT1 is connected to the connection box 40 side, and the output from the PV panel 11A1 input to the string monitor slave unit MSL1 is output as it is.

  The connection box 40 collects and connects the power lines that individually connect the strings STR1, STR2, and STR3 to the power conditioner 50. The connection box 40 includes, for example, a connection terminal between a power line connecting the string STR1, a power line connecting the string STR2, and a power line connecting the string STR3, a switch used for inspection and maintenance, a lightning protection element, and a backflow of electricity. And a backflow prevention diode for preventing the current. Further, the connection box 40 may be integrated with the power conditioner 50 or may be omitted.

  The power conditioner 50 converts the DC power output from each of the strings STR1 to STR3 via the connection box 40 (for example, DCDC conversion processing), and further converts the DC power after DCDC conversion into AC power (for example, DCAC conversion processing). The power conditioner 50 is connected to, for example, a distribution board (not shown). The power conditioner 50 may perform MPPT control so that the power supplied to the power conditioner 50 is maximized in the above-described DCDC conversion processing. The MPPT control of the power conditioner 50 is control for maximizing the total power generation amount of each PV panel of the solar power generation system 100. The MPPT control in the power conditioner 50 can be realized by a known technique. For example, a hill climbing method is employed. In addition, in order to simplify description in FIG. 1, although the connection box 40 and the power conditioner 50 are made into one, it is not limited to one.

  The string monitor master device MMS performs wired communication or wireless communication with one or more string monitor slave devices MSL1 to MSL3. The string monitor master MMS receives, for example, measurement result data of a predetermined physical quantity in solar power generation for each of the strings STR1 to STR3 from the string monitor slaves MSL1 to MSL3 and outputs the data to the data logger 80. The installation location of the string monitor master device MMS is not particularly limited. For example, the string monitor master device MMS may be installed in a location where wired communication or wireless communication with the string monitor slave device is possible, or may be installed in the power conditioner 50. good. In FIG. 1, the case where the string monitor master MMS is installed as a single device is illustrated.

  In addition, when the string monitor master MMS acquires a specific operation control signal output from the data logger 80 in response to an input operation of a maintenance worker holding the portable terminal 60, the string monitor master MMS is within the installation range of the photovoltaic power generation system 100. Then, the specific operation control signal is transmitted to the dedicated terminal EXM attached to the pole PL installed around the string (for example, the string STR1) determined to be abnormal (see FIG. 8).

  Further, when the string monitor master MMS acquires a specific operation control signal output from the data logger 80 in response to an input operation of a maintenance worker holding the mobile terminal 60, the string (for example, a string determined to be abnormal) (for example, A specific operation control signal is transmitted to a string monitor slave unit (for example, string monitor slave unit MSL1) corresponding to the string STR1) (see FIG. 9). Details of the operation of the string monitor master MMS will be described later with reference to FIGS.

  Here, the detailed internal configuration of the string monitor master MMS will be described with reference to FIG. FIG. 3 is a block diagram showing in detail an example of the hardware configuration of the string monitor master device MMS of this embodiment. The string monitor master MMS shown in FIG. 3 includes a power supply unit MS1, a control unit MS2, and a communication unit MS3. The control unit MS2 includes a processor MS21, a work memory MS22, an I / F (Interface) unit M23, and a flash memory MS24. Communication unit MS3 includes a wired communication unit MS3A for communicating with data logger 80 and a wireless communication unit MS3B for communicating with string monitor slave units MSL1 to MSL3.

  The power supply unit MS1 receives power supply from an external power supply (for example, AC power supply or DC power supply), and supplies power necessary for the operation of each unit in the string monitor master unit MMS1.

  The control unit MS2 performs various signal processes by executing, for example, a program stored in a work memory MS22 (for example, RAM: Random Access Memory) in the processor MS21. The processing result by the control unit MS2 is transmitted or output from the communication unit MS3 to other devices (for example, the data logger 80 and the string monitor slave units MSL1 to MSL3) via the I / F unit MS23, for example. The I / F unit MS23 is an interface between the control unit MS2 and the communication unit MS3, and includes, for example, a UART (Universal Asynchronous Receiver Transmitter) or I2C.

  The communication unit MS3 communicates with the string monitor slave units MSL1 to MSL3 using wired communication or wireless communication. This communication method includes, for example, power line communication (PLC) via power line, DECT, wireless LAN communication, or Zigbee (registered trademark).

  The data logger 80 acquires data output from the string monitor master device MMS, that is, measurement result data of a predetermined physical quantity in solar power generation of each of the strings STR1 to STR3. Hereinafter, for the sake of simplicity, measurement result data of a predetermined physical quantity in solar power generation of all the strings STR1 to STR3 of the solar power generation system 100 illustrated in FIG. 1 is referred to as “aggregated power generation data” for convenience. The data logger 80 transmits the aggregated power generation data to the monitor server 90 or the portable terminal 60 connected via the network NW. Further, the data logger 80 receives the measurement result data individually transmitted from each of the string monitor slave units MSL1 to MSL3 instead of transmitting the aggregated power generation data to the monitor server 90 or the portable terminal 60. Data may be transmitted to the monitor server 90 or the portable terminal 60.

  Further, the data logger 80 may determine whether or not each of the strings STR1 to STR3 in the photovoltaic power generation system 100 is abnormal. Specifically, the data logger 80 compares the measured value of the generated current of each string STR1 to STR3 with the current threshold value for string failure determination (predetermined value), and among the measured values of the generated current of each string STR1 to STR3 If any of the strings is smaller than the string failure determination current threshold, it is determined that any of the strings is abnormal.

  Further, when the data logger 80 receives the specific operation control signal transmitted from the portable terminal 60 in response to an input operation of a maintenance worker who owns the portable terminal 60, the data logger 80 is within the installation range of the photovoltaic power generation system 100. The string monitor master MMS is instructed to transmit a specific operation control signal to the dedicated terminal EXM attached to the pole PL installed around the string determined to be abnormal (see FIG. 8).

  Furthermore, when the data logger 80 receives a specific operation control signal transmitted from the portable terminal 60 in response to an input operation of a maintenance worker holding the portable terminal 60, the data logger 80 corresponds to a string that is determined to be abnormal. The string monitor master unit MMS is instructed to transmit a specific operation control signal to the monitor slave unit (for example, the string monitor slave unit MSL1) (see FIG. 9). Details of the operation of the data logger 80 will be described later with reference to FIGS.

  The network NW may be a wired network (for example, an intranet or the Internet), or a wireless network (for example, a wireless local area network (LAN), IrDA, Bluetooth (registered trademark), or WiGig).

  The monitor server 90 receives the aggregated power generation data transmitted from the data logger 80 all at once or the measurement result data transmitted individually, and monitors the power generation amount of the PV panel in each of the strings STR1 to STR3 of the solar power generation system 100. . The monitor server 90 determines whether there is an abnormality in each of the strings STR1 to STR3 in the photovoltaic power generation system 100. Specifically, the monitor server 90 compares the measured value of the generated current of each string STR1 to STR3 with the current threshold value for string failure determination (predetermined value), and among the measured values of the generated current of each string STR1 to STR3 If any of the strings is smaller than the string failure determination current threshold, it is determined that any of the strings is abnormal.

  Moreover, the monitor server 90 has the same solar power generation system DB 66 as the solar power generation system DB 66 (described later) included in the mobile terminal 60, and in accordance with an input operation of a maintenance worker who owns the mobile terminal 60, String map data MP (see FIG. 5) indicating the position information of each string-connection box-power conditioner in the photovoltaic system 100 in a matrix is generated and transmitted to the portable terminal 60. Note that the string map data MP may be generated in the mobile terminal 60.

  The portable terminal 60 is possessed by a maintenance worker who performs maintenance work on the photovoltaic power generation system 100 and is used for the maintenance work. For example, the portable terminal 60 acquires necessary data (for example, string map data) from the monitor server 90 and displays it on the display unit 62 or from the data logger 80 in response to a maintenance worker input operation on the operation unit 61. The transmitted data (for example, aggregated power generation data, measurement result data) is transmitted to the monitor server 90 and stored.

  Here, a detailed internal configuration of the portable terminal 60 as an example of the display device will be described with reference to FIG. FIG. 4 is a block diagram showing in detail the hardware configuration of the mobile terminal 60 of the present embodiment. A portable terminal 60 shown in FIG. 4 includes an operation unit 61, a display unit 62, a position information acquisition unit 63, a control unit 64, a communication unit 65, and a solar power generation system DB 66. The portable terminal 60 is configured using, for example, a tablet terminal or a smartphone, and includes a battery (not shown) as an example of a power storage unit capable of storing power, and can supply power (DC power) from the battery to the display unit 62. is there. However, the portable terminal 60 is not limited to a tablet terminal or a smartphone.

  An operation unit 61 as an example of an input unit is a user interface (UI) that receives an input operation of a maintenance worker, and is, for example, a pointing device such as a mouse, a mechanical button, or a keyboard, or a display unit. 62 may be a touch panel or a touch pad that is arranged corresponding to the display screen 62 and accepts an input operation with a maintenance worker's finger or stylus pen, and is not limited to these configurations

  The display unit 62 is configured using, for example, an LCD (Liquid Crystal Display) or an organic EL (Electroluminescence), and displays data (for example, string map data, data indicating the current position of the portable terminal 60) output by the control unit 64 on a screen. Is displayed.

  The position information acquisition unit 63 is configured using, for example, a GPS receiver, acquires data indicating the current position of the mobile terminal 60, that is, the current position of the maintenance worker, and outputs the data to the control unit 64.

  The control unit 64 includes a processor (for example, a CPU, MPU, or DSP) and a memory (for example, a ROM), and executes various signals by executing programs stored in the memory in the processor. A control signal for causing each unit to execute the signal processing is output.

  For example, the control unit 64 displays the aggregated power generation data or the measurement result data transmitted from the data logger 80 on the display unit 62, thereby determining which string is abnormal in the solar power generation system 100. Let me check.

  Further, the control unit 64 transmits the string map data MP of the solar power generation system 100 transmitted from the monitor server 90 or read out from the solar power generation system DB 66 according to the input operation of the maintenance worker to the operation unit 61, and the position. Data 60P indicating the current position of the portable terminal 60 output from the information acquisition unit 63 is displayed on the display unit 62 (see FIG. 5). Thereby, for example, when the maintenance worker knows the position of the string ABSSTR determined to be abnormal, the portable terminal 60 uses the data 60P indicating the current position of the portable terminal displayed on the string map data. By making the maintenance worker confirm, it is possible to shorten the time required for the maintenance worker to arrive at the string ABSTR that is determined to be abnormal.

  Here, the string map data MP will be described with reference to FIG. FIG. 5 shows data indicating the current position of the portable terminal 60 on the string map data MP indicating each installation location of the power conditioner as an example of the string, the junction box, and the power generation control device in the photovoltaic power generation system 100 of the present embodiment. It is a figure which shows an example of the screen on which 60P was displayed.

  The string map data MP as an example of the map data is displayed by arranging all or a part of strings in the photovoltaic power generation system in a matrix, and in FIG. 5, a plurality of row numbers (specifically, rows A to L). ) And a plurality of column numbers (specifically, columns 1 to 28), each string can be identified. The string map data MP is generated based on data indicating a connection state between the string and the connection box, or data indicating a connection state between the string, the connection box, and the power conditioner. For this reason, for example, when the string STR or the power conditioners 50a and 50b as an example of one of the electrical elements is selected according to the input operation of the maintenance worker, the portable terminal 60 selects the selected string. Alternatively, the connection state of all or a part of the PV panel, the string, the connection box, and the power conditioner having a connection relationship with the power conditioner is visually displayed (FIG. 6A, FIG. 6B, or FIG. 7). reference). In addition, when displaying the connection state on the display unit 62, the mobile terminal 60 may simply display the connection relationship, or highlight the portion corresponding to the connection state after displaying the entire photovoltaic power generation system 100. May be displayed. In addition, an electrical element is an element (apparatus) which comprises the photovoltaic power generation system 100, and is the PV panel single-piece | unit, several PV panels, a string, a connection box, a power conditioner, and the cable which connects PV panels to each other Any of them, and so on.

  Further, for example, when the maintenance worker does not know the position of the string ABSTR that is determined to be abnormal, the control unit 64 is displayed on the display unit 62 according to the maintenance worker's input operation to the operation unit 61. When a string STR determined to be abnormal is selected from the string map data MP, a specific operation control signal corresponding to one of the following three operations 1 to 3 is generated and communicated: To the unit 65. The control unit 64 is not limited to the case where the string STR determined to be abnormal is selected from the string map data MP displayed on the display unit 62, but the string map data MP displayed on the display unit 62 is also selected. When an abnormality of any of the electrical elements displayed above is detected, a specific operation control signal corresponding to one of the following three operations 1 to 3 is generated and output to the communication unit 65. May be. Therefore, in the following description, “when the string STR that is determined to be abnormal is selected on the string map data MP displayed on the display unit 62” is referred to as “the string map data displayed on the display unit 62”. It may be read as “when an abnormality of any electrical element displayed on the MP is detected”.

(Operation 1) A predetermined sound is output to the string monitor slave unit corresponding to the string ABSTR determined to be abnormal via the data logger 80 and the string monitor master unit MMS, and light of a predetermined color is lit by the LED. Or an operation of transmitting a signal of a specific frequency (see FIG. 8).
(Operation 2) Attached to the pole PL installed in the vicinity of the string ABSTR within the installation range of the photovoltaic power generation system 100 and determined to be abnormal through the data logger 80 and the string monitor master MMS The dedicated terminal EXM is made to output a predetermined sound, light of a predetermined color is lit by an LED, or a signal of a specific frequency is transmitted (see FIG. 8).
(Operation 3) A signal having a specific frequency is transmitted to the string monitor slave unit corresponding to the string ABSTR determined to be abnormal via the data logger 80 and the string monitor master unit MMS, and the photovoltaic power generation system 100 An operation of causing the receiving terminal RCM possessed by a maintenance worker to receive a signal of a specific frequency (see FIG. 9).

  The communication unit 65 receives data (for example, aggregated power generation data and measurement result data) transmitted from the data logger 80 and data (for example, string map data MP) transmitted from the monitor server 90, and outputs the data to the control unit 64. The control unit 64 transmits data read from the photovoltaic power generation system DB 66 or data for generating the string map data MP to the monitor server 90.

  The photovoltaic power generation system DB 66 as an example of the storage unit is configured by using, for example, a hard disk device or a semiconductor memory (for example, a volatile memory such as a RAM or a nonvolatile memory such as a flash memory), and the photovoltaic power generation illustrated in FIG. Measurement result data of solar power generation measured in the system 100, aggregated power generation data, various data input by the operation unit 81, and other data are stored.

  For example, the photovoltaic power generation system DB 66 indicates data necessary for generating the string map data MP, that is, data indicating the connection state between the string and the connection box, or the connection state between the string, the connection box, and the power conditioner. Store the data shown. The data indicating the connection state between the string and the connection box is, for example, data indicating a correspondence relationship (connection state) with n (n: an integer of 2 or more) strings connected to one connection box. Similarly, the data indicating the connection state between the string, the connection box, and the inverter is, for example, m (m: integer of 2 or more) connection boxes connected to one inverter, and m pieces of connection boxes. It is data indicating a correspondence relationship (connection state) with (n × m) strings connected to the connection box. Furthermore, the photovoltaic power generation system DB 66 stores data indicating the connection state of a plurality of PV panels forming each string for each string. When the photovoltaic power generation system DB 66 is configured using a volatile memory, the data stored in the photovoltaic power generation system DB 66 is transmitted from the outside of the portable terminal 60 and received by the portable terminal 60. It is data.

(Display example of connection status of string, junction box and inverter)
Next, in the photovoltaic power generation system 100 of the present embodiment, a display example of the connection state of the string, the connection box, and the power conditioner will be described with reference to FIGS. 6 (A) and 6 (B). FIG. 6A shows the connection relationship between the connection box AB40 connected to the selected string ABSSTR and the power conditioner 50a connected to the connection box AB40 according to the selection operation of the specific string ABSTR. It is a figure which shows the example of a display. FIG. 6B shows a connection between each connection box connected to the selected power conditioner 50a and a plurality of strings connected to each connection box in accordance with a selection operation of the specific power conditioner 50a. It is a figure which shows the example of a display of a relationship.

  For example, the string map data MP displayed on the display unit 62 of the mobile terminal 60 is shown, and the maintenance worker has an abnormality while holding the mobile terminal 60 for the maintenance work of the solar power generation system. It is assumed that the determined string ABSTR is going to be installed. Further, it is assumed that the maintenance worker wants to check the connection box and the power conditioner that are connected to the string ABSTR that is determined to be abnormal.

  In this case, when the string ABSSTR that is determined to have an abnormality on the string map data MP is selected by an input operation of the maintenance worker on the operation unit 61, the portable terminal 60 displays the string map data MP on the string map data MP. The connection state between the connection box AB40 and the power conditioner AB50 having a connection relationship with the selected string ABSSTR is specifically displayed using the connection line CNT.

  As a result, the portable terminal 60 tells the maintenance worker which connection box (connection box AB40) and which power conditioner (power conditioner 50a) the string ABSSTR determined to be abnormal are connected to. By visual indication, it is possible to notify the maintenance worker of the confirmation items of the maintenance work at an early stage, and to suppress the deterioration of work efficiency.

  Similarly, for example, the string map data MP displayed on the display unit 62 of the portable terminal 60 is shown, and the maintenance worker holds the portable terminal 60 for the maintenance work of the solar power generation system, and there is an abnormality. It is assumed that the inverter is determined to be located at the place where the inverter 50a is installed. Furthermore, it is assumed that the maintenance worker wants to check the connection box and the string that are connected to the power conditioner AB 50a that is determined to be abnormal.

  In this case, when the power conditioner AB 50a that is determined to have an abnormality on the string map data MP is selected by an input operation of a maintenance worker on the operation unit 61, the portable terminal 60 is displayed on the string map data MP. , The connection state of the connection box and the string having the connection relation with the selected power conditioner AB 50a is specifically displayed using the range line ARA.

  Thereby, the portable terminal 60 is applicable by visually indicating to the maintenance worker how many connection boxes and strings the power conditioner AB 50a determined to have an abnormality has. The influence on the connection box and the string accompanying the maintenance work of the inverter can be clearly shown to the maintenance worker.

(Display example of connection status between string and PV panel)
Next, in the photovoltaic power generation system 100 of the present embodiment, a display example of a connection state between a string and a plurality of PV panels forming the string will be described with reference to FIG. FIG. 7 is a diagram illustrating a display example of a specific connection relation of a plurality of PV panels forming the selected string STR21 according to the selection operation of the specific string STR21.

  For example, the string map data MP displayed on the display unit 62 of the mobile terminal 60 is shown, and the maintenance worker has an abnormality while holding the mobile terminal 60 for the maintenance work of the solar power generation system. How many PV panels are connected to how many strings STR21 determined to be abnormal in the maintenance work after arriving at the determined installation location of the string STR21 (hereinafter also referred to as “work site”). Assume that you want to check

  In this case, when the string STR21 that is determined to be abnormal on the string map data MP is selected by an input operation on the operation unit 61 of the maintenance worker who arrives at the work site, the portable terminal 60 displays the string map. On the data MP, the connection state of the plurality of PV panels forming the selected string STR21 is specifically displayed using the range line CNTL1.

For example, in FIG. 7, the mobile terminal 60 has a connection relationship between a string STR21 that is determined to be abnormal and a plurality of PV panels PV1 to PV10 that form the string STR21.
(Connection relationship 1) The string STR21 determined to have an abnormality is formed by connecting a total of ten PV panels PV1 to PV10 in series. (Displayed on a different screen from the data MP).

  Accordingly, when the mobile terminal 60 visually confirms the corresponding string STR21 after arriving at the installation location of the string STR21 determined to be abnormal, the portable terminal 60 includes a plurality of PV panels PV1 to PV10 that form the string STR21. For the maintenance worker, the connection state, that is, the connection state of other PV panels forming the same string STR21 with the PV panel having a high possibility of actually being abnormal among the strings STR21 determined to be abnormal. Can be shown visually. Therefore, the portable terminal 60 can shorten the time required for the maintenance worker to specify the PV panel to be subjected to the maintenance work, and can suppress the deterioration of the work efficiency of the maintenance worker.

(First pattern for notifying the position of the string determined to be abnormal)
In the present embodiment, when the maintenance worker does not know the position of the string that is determined to be abnormal, the portable terminal 60 is assigned to a predetermined string monitor slave unit corresponding to the string that is determined to be abnormal, for example. Sound is output, light of a predetermined color is lit by an LED, or a signal having a specific frequency is transmitted.

  However, in addition to the method of outputting a predetermined sound to the string monitor slave unit corresponding to the string determined to be abnormal and lighting the light of a predetermined color by the LED or transmitting a signal of a specific frequency, it is shown in FIG. The first pattern or the second pattern shown in FIG. 9 is conceivable.

  First, the first pattern will be described with reference to FIG. FIG. 8 shows a dedicated terminal attached to the string monitor slave unit MSL1 provided corresponding to the corresponding string STR1 or the pole PL installed in the vicinity in accordance with the selection operation of the string STR1 determined to be abnormal. It is explanatory drawing of the example which carries out an audio | voice output from EXM. In addition, FIG. 8 also shows an example in which the portable terminal 60 causes the string monitor slave unit MSL1 to output a predetermined sound.

  In the first pattern, when the maintenance operator inputs an operation for displaying the string map data MP on the display unit 62 to the operation unit 61, the portable terminal 60 sends a string to the monitor server 90. An acquisition request for map data MP is transmitted (St1). In response to the acquisition request for the string map data MP transmitted from the portable terminal 60, the monitor server 90 generates the string map data MP and returns it to the portable terminal 60 (St2).

  The portable terminal 60 displays the string map data MP returned from the monitor server 90 on the screen of the display unit 62, and the string that is determined to be abnormal by the maintenance worker with respect to the displayed string map data MP. When (for example, the string STR1) is selected, a predetermined sound is output to the dedicated terminal EXM attached to the pole PL installed in the vicinity of the string STR1 determined to be abnormal, and the LED is used. A specific operation control signal for turning on light of a predetermined color or transmitting a signal of a specific frequency is generated and transmitted to the data logger 80 (St3).

  The data logger 80 transfers the specific operation control signal transmitted from the portable terminal 60 to the string monitor parent device MMS (St4). The string monitor master MMS transmits the specific operation control signal transferred from the data logger 80 to the dedicated terminal EXM attached to the pole PL installed in the vicinity of the string STR1 determined to be abnormal (St5). ).

  The dedicated terminal EXM outputs a predetermined sound in accordance with the specific operation control signal transmitted from the string monitor parent device MMS, lights a predetermined color by the LED, or transmits a signal of a specific frequency (St6). Thereby, the portable terminal 60 can perform an efficient guide to a maintenance worker on a string (for example, the string STR1) to be a maintenance work, and can shorten the arrival time at the maintenance work site.

(Second pattern for notifying the position of the string determined to be abnormal)
Next, a 2nd pattern is demonstrated with reference to FIG.9 and FIG.10. FIG. 9 shows a receiving terminal RCM that receives a signal of a specific frequency transmitted from the string monitor slave unit MSL1 provided corresponding to the corresponding string STR1 in response to the selection operation of the string STR1 determined to be abnormal. It is explanatory drawing of the example which guides the installation place of applicable string STR1 to an operator using the signal level displayed on the. FIG. 10 is a block diagram showing in detail the hardware configuration of the receiving terminal RCM shown in FIG.

  Similarly to the first pattern, the portable terminal 60 transmits an acquisition request for the string map data MP to the monitor server 90 in the second pattern, and displays the string map data MP transmitted from the monitor server 90 on the display unit 62. To do. The contents of Steps St1 to St3 shown in FIG. 9 are the same as Steps St1 to St3 shown in FIG.

  The portable terminal 60 displays the string map data MP returned from the monitor server 90 on the screen of the display unit 62, and the string that is determined to be abnormal by the maintenance worker with respect to the displayed string map data MP. When (for example, the string STR1) is selected, a specific frequency signal is transmitted to the string monitor slave unit corresponding to the string ABSTR determined to be abnormal, and the photovoltaic power generation system 100 is maintained. A specific operation control signal for causing the receiving terminal RCM possessed by the worker to receive a signal of a specific frequency is generated and transmitted to the data logger 80 (St3 ′).

  The data logger 80 transfers the specific operation control signal transmitted from the portable terminal 60 to the string monitor parent device MMS (St4). The string monitor master MMS transmits the specific operation control signal transferred from the data logger 80 to the string monitor slave MSL1 corresponding to the string STR1 determined to be abnormal (St5 ').

  The string monitor slave unit MSL1 transmits a signal of a specific frequency to the receiving terminal RCM possessed by the maintenance worker in accordance with the specific operation control signal transmitted from the string monitor master unit MMS (St6 '). As shown in FIG. 10, the receiving terminal RCM includes a power supply unit RC1, a receiving unit RC2, a signal level determining unit RC3, and a display unit RC4. The power necessary for the operation of each unit is supplied from the power supply unit RC1 to the reception unit RC2, the signal level determination unit RC3, and the display unit RC4.

  The receiving terminal RCM receives the signal of the specific frequency transmitted from the string monitor slave unit MSL1 in the receiving unit RC, and determines (calculates) the signal level of the received signal of the specific frequency in the signal level determining unit RC3. The receiving terminal RCM displays the determination result (calculation result) of the signal level of the signal of the specific frequency on the display unit RC4. The maintenance worker checks the signal level of the signal of the specific frequency displayed on the display unit RC4 of the receiving terminal RCM while holding the portable terminal 60 and the receiving terminal RCM, so that the string STR1 to be subjected to the maintenance work is obtained. Can approach.

  Thereby, the portable terminal 60 can perform an efficient guide to a maintenance worker on a string (for example, the string STR1) to be a maintenance work, and can shorten the arrival time at the maintenance work site.

  Finally, the configuration, operation, and effect of the mobile terminal and the connection display method according to the present invention will be described.

  One embodiment of the present invention is capable of selecting a display unit capable of displaying at least a part of a solar power generation system including a plurality of solar panels and an electrical element constituting at least a part of the solar power generation system. A display device comprising: an operation unit; and a control unit that causes the display unit to display an electrical connection state of an electrical element selected by the operation unit.

  In this configuration, the display device displays at least a part of the photovoltaic power generation system including a plurality of solar panels on the display unit, and an electrical element constituting a part of the photovoltaic power generation system is selected by the operation unit. If it is, the electrical connection state of the selected electrical element is displayed on the display unit.

  Thereby, the display device is selected when an electrical element (for example, a solar panel) constituting a part of the photovoltaic power generation system is selected on the display unit in maintenance work by a maintenance worker, for example. The electrical connection relationship of the elements can be visually shown. Therefore, the display device can shorten the time required for the maintenance worker to specify the PV panel to be subjected to the maintenance work, and can suppress the deterioration of the work efficiency of the maintenance worker.

  In one embodiment of the present invention, when the solar panel is selected as the electrical element in the operation unit, the control unit includes at least a cable connected to the solar panel as the display unit. This is a display device for display.

  In this configuration, when the operation unit selects a solar panel as an electrical element, the control unit causes the display unit to display a cable connected to the selected solar panel.

  Accordingly, when the solar panel is selected as an electrical element by the operation of the maintenance worker, the display device visually indicates the cable having an electrical connection relationship with the solar panel to the maintenance worker. Can be shown.

  In one embodiment of the present invention, the photovoltaic power generation system includes one or more strings in which the plurality of solar panels are connected in series, and the operation unit configures at least a part of the strings. When a target element is selected, the control unit is a display device that causes the display unit to display connection states of a plurality of solar panels constituting at least a part of the string.

  In this configuration, when the photovoltaic power generation system includes one or more strings in which a plurality of solar panels are connected in series, and an electric element constituting at least a part of the strings is selected by the operation unit The control unit causes the display unit to display the electrical connection state of the plurality of solar panels constituting at least a part of the string.

  Accordingly, the display device configures at least a part of the string for the maintenance worker when an electrical element that constitutes at least a part of the string as the electrical element is selected by an operation of the maintenance worker. The connection state of a plurality of solar panels can be visually shown.

  In one embodiment of the present invention, the photovoltaic power generation system includes a connection box for concentrating a plurality of strings in which the plurality of solar panels are connected in series, and at least a part of the strings is provided in the operation unit. When an electrical element to be configured is selected, the control unit is a display device that displays at least the connection box on the display unit.

  In this configuration, the photovoltaic power generation system includes a connection box for concentrating a plurality of strings in which a plurality of solar panels are connected in series, and an electric element constituting at least a part of the strings is selected by the operation unit. In this case, the control unit displays at least the connection box on the display unit.

  Thus, the display device visually displays at least the junction box to the maintenance worker when the electric component constituting at least a part of the string is selected as the electric component by the operation of the maintenance worker. Can show.

  In one embodiment of the present invention, when the connection box is selected in the operation unit, the control unit displays the electrical elements constituting at least a part of the string connected to the connection box. This is a display device that is displayed on the screen.

  In this configuration, when the connection box is selected by the operation unit, the control unit causes the display unit to display electrical elements constituting at least a part of the string connected to the connection box.

  Thus, when the connection box is selected as an electrical element by the operation of the maintenance worker, the display device is configured so that the maintenance worker is electrically connected to the connection box with at least a part of the string. Elements can be shown visually.

  In one embodiment of the present invention, the photovoltaic power generation system includes a power generation control device that controls output power of at least one solar panel, and the electrical element connected to the power generation control device in the operation unit. Is selected, the control unit is a display device that displays at least the power generation control device on the display unit.

  In this configuration, when the photovoltaic power generation system includes a power generation control device that controls output power of at least one solar panel, and an electrical element connected to the power generation control device is selected by the operation unit, control is performed. The unit displays at least the power generation control device on the display unit.

  Thereby, when the electrical element connected to the power generation control device as the electrical element is selected by the operation of the maintenance worker, the display device is connected to the electrical element for the maintenance worker. The power generation control device can be at least visually shown.

  In one embodiment of the present invention, when the power generation control device is selected in the operation unit, the control unit causes the display unit to display the electrical element connected to the power generation control device. Device.

  In this configuration, when the power generation control device is selected by the operation unit, the control unit causes the display unit to display electrical elements connected to the power generation control device.

  Thus, when the power generation control device is selected as an electrical element by the operation of the maintenance worker, the display device at least visually indicates the electrical element connected to the power generation control device to the maintenance worker. Can show.

  One embodiment of the present invention further includes, for each string, a storage unit that stores first connection state data indicating a connection state of a solar panel forming each string, and the display unit includes the sunlight. Map data indicating an installation position of the one or more strings in the power generation system is displayed, and the control unit displays any one of the one or more strings in the map data displayed on the display unit. In accordance with a selection operation, the display device displays a connection state of the plurality of solar panels forming the selected string on the display unit using the first connection state data.

  In this configuration, the display device is used by a maintenance worker of a photovoltaic power generation system including one or more strings in which a plurality of PV panels are connected in series. The storage unit of the portable terminal stores first connection state data indicating the connection state of the PV panel forming each string for each string. The display unit displays string map data indicating an installation position of one or more strings in the photovoltaic power generation system. The control unit of the mobile terminal forms the selected string using the first connection state data in response to a selection operation of any one of the one or more strings in the displayed string map data. The connection state of the plurality of PV panels is displayed on the display unit.

  Thus, when the display device visually confirms the corresponding string after arriving at the installation location of the string determined to be abnormal in the maintenance work by the maintenance worker, the plurality of PV panels forming the string The connection state of the other PV panels that form the same string as the PV panel that is likely to have an abnormality among the strings that are determined to be abnormal is determined for the maintenance worker. Can be shown visually. Therefore, the display device can shorten the time required for the maintenance worker to specify the PV panel to be subjected to the maintenance work, and can suppress the deterioration of the work efficiency of the maintenance worker.

  In addition, according to an embodiment of the present invention, a second connection indicating a connection state between n (n: an integer of 2 or more) strings and a connection box for collecting power lines individually connecting the n strings. A storage unit that stores state data; and wherein the control unit is selected using the second connection state data according to a selection operation of any one of the n strings. The display device displays a connection state between a string and the connection box corresponding to the selected string on the display unit.

  In this configuration, the storage unit of the display device stores the second connection state data indicating the connection state between the n strings and the connection box for collecting the power lines individually connecting the n strings. The control unit of the display device causes the display unit to display a connection state between the selected string and the connection box corresponding to the string in response to a selection operation of any one of the n strings.

  As a result, the display device needs to turn off the breaker of the string provided in the connection box at the beginning of the maintenance work by the maintenance worker, so the string determined to be abnormal and the connection box corresponding to this string By visually showing the connection state (for example, the wiring state), it is possible to improve the work efficiency of the maintenance worker.

  In one embodiment of the present invention, the storage unit includes n (n: an integer greater than or equal to 2) strings, a connection box for collecting power lines that individually connect the n strings, and m (m 3rd connection state data indicating the connection state with the power conditioner that converts the DC power measured by the (n × m) number of the strings through the number of the connection boxes to the predetermined power. And the control unit, in response to a selection operation of any one of the (n × m) strings in the string map data displayed on the display unit, the third unit It is a display device that displays the connection state between the selected string and the connection box corresponding to the selected string and the power conditioner on the display unit using connection state data.

  In this configuration, the storage unit of the display device includes (n × m) strings via a connection box for collecting n strings and power lines for individually connecting the n strings and m connection boxes. Third connection state data indicating a connection state with a power conditioner that converts the measured DC power into predetermined power is stored. The control unit of the display device selects the selected string and the connection box corresponding to the string in response to a selection operation of any one of (n × m) strings in the string map data displayed on the display unit. And the connection state between the inverter and the inverter are displayed on the display unit.

  As a result, the display device needs to turn off the breaker of the string provided in the connection box at the beginning of the maintenance work by the maintenance worker, so the string determined to be abnormal and the connection box corresponding to this string By visually showing in detail the connection state (for example, the wiring state) between the inverter and the inverter, not only the connection state between the string and the connection box determined to be abnormal, but also the connection box and the connection box Maintenance work can be executed in consideration of the connection state with the corresponding power conditioner, and work efficiency and safety of the maintenance work can be improved.

  In one embodiment of the present invention, the storage unit includes n (n: an integer greater than or equal to 2) strings, a connection box for collecting power lines that individually connect the n strings, and m (m 3rd connection state data indicating the connection state with the power conditioner that converts the DC power measured by the (n × m) number of the strings through the number of the connection boxes to the predetermined power. And the control unit is selected using the third connection state data according to a selection operation of the power conditioner in the string map data displayed on the display unit. The display device displays a connection state between a power conditioner and the m connection boxes corresponding to the selected power conditioner and (n × m) strings on the display unit.

  In this configuration, the storage unit of the display device includes (n × m) strings via a connection box for collecting n strings and power lines for individually connecting the n strings and m connection boxes. Third connection state data indicating a connection state with a power conditioner that converts the measured DC power into predetermined power is stored. The control unit of the display device selects the selected power conditioner and m number of connection boxes corresponding to the power conditioner according to the selection operation of the power conditioner in the string map data displayed on the display unit (n × m) The connection state with the strings is displayed on the display unit.

  As a result, even if it is determined that there is an abnormality in the power conditioner, the display device connects the power conditioner, m connection boxes corresponding to the power conditioner, and (n × m) strings. By visually indicating the state in detail, the influence on the connection box and the string accompanying the maintenance work of the corresponding inverter can be clearly shown to the maintenance worker.

  In addition, according to an embodiment of the present invention, a display unit capable of displaying at least a part of a solar power generation system including a plurality of solar panels, and an abnormality in an electrical element constituting at least part of the solar power generation system A display device comprising: an abnormality detection unit capable of detecting an error; and a display unit that displays an electrical connection relationship of electrical elements detected by the abnormality detection unit on the display unit.

  In this configuration, the display device displays at least a part of the photovoltaic power generation system including a plurality of solar panels on the display unit, detects an abnormality of an electrical element constituting at least a part of the photovoltaic power generation system, The electrical connection relationship of the electrical element in which the abnormality is detected is displayed on the display unit.

  As a result, the display device, for example, in the maintenance work by a maintenance worker, when an abnormality is detected in an electrical element (for example, a solar panel) that forms part of the photovoltaic power generation system, It is possible to visually show the electrical connection relationship of the target elements. Therefore, the display device can shorten the work time of the maintenance worker for the PV panel to be subjected to the maintenance work, and can suppress the deterioration of the work efficiency of the maintenance worker.

  In addition, according to an embodiment of the present invention, a display unit capable of displaying at least a part of a solar power generation system including a plurality of solar panels, and an abnormality in an electrical element constituting at least part of the solar power generation system An abnormality detecting unit capable of detecting the electric power, a control unit for displaying the electrical connection relationship of the electrical elements detected by the abnormality detecting unit on the display unit, and capable of storing electric power and supplying power to the display unit A power storage unit.

  In this configuration, the mobile terminal has a power storage unit that can store power and supplies power to the display unit, and displays at least a part of the solar power generation system including a plurality of solar panels on the display unit. Then, the abnormality of the electrical element constituting at least a part of the photovoltaic power generation system is detected, and the electrical connection relationship of the electrical element in which the abnormality is detected is displayed on the display unit.

  As a result, the mobile terminal detects the abnormality in which the abnormality is detected when an abnormality of an electrical element (for example, a solar panel) that constitutes a part of the photovoltaic power generation system is detected in maintenance work by a maintenance worker, for example. It is possible to visually show the electrical connection relationship of the target elements. Therefore, the display device can shorten the work time of the maintenance worker for the PV panel to be subjected to the maintenance work, and can suppress the deterioration of the work efficiency of the maintenance worker. Furthermore, since the mobile terminal can supply power to the display unit using the power stored in the power storage unit, the mobile terminal can operate without using an external power source (for example, a commercial power source).

  In addition, an embodiment of the present invention further includes a position information acquisition unit that acquires position information of the mobile terminal, and the control unit is an electrical element that constitutes at least a part of the display on the display unit It is a portable terminal which further displays the positional information of the said portable terminal acquired by the said positional information acquisition part on the electrical connection relationship of.

  In this configuration, the position information acquisition unit of the mobile terminal acquires the position information of the mobile terminal. The control unit of the mobile terminal further displays the position information of the mobile terminal on the electrical connection relationship of the electrical elements constituting at least a part of the photovoltaic power generation system displayed on the display unit.

  Thereby, the portable terminal visually indicates both the current position of the maintenance worker and the installation position of the string determined to be abnormal to the maintenance worker who owns the portable terminal by the string map data. As a result, the maintenance worker can be efficiently guided to the string to be subjected to the maintenance work, and the arrival time at the maintenance work site can be shortened.

  Further, according to one embodiment of the present invention, the control unit is configured to select an electrical element that is determined to be abnormal among electrical elements that constitute at least a part of the photovoltaic power generation system. A portable measuring device that causes a wireless measuring device that measures the amount of power generated in photovoltaic power generation of the selected electrical element to output a predetermined sound, light a predetermined color, or transmit a signal of a specific frequency. is there.

  In this configuration, the control unit of the portable terminal selects the selected electric element in response to the selection operation of the electric element that is determined to be abnormal among the electric elements that constitute at least a part of the photovoltaic power generation system. A wireless measuring device (string monitor slave unit) that measures the amount of power generation in the photovoltaic power generation of the target element outputs a predetermined sound, lights a predetermined color, or transmits a signal of a specific frequency.

  As a result, the portable terminal causes the maintenance worker to output a predetermined sound to the string monitor slave unit that measures the power generation amount of the string to be subjected to the maintenance work, and to turn on a light of a predetermined color or transmit a signal of a specific frequency. As a result, the maintenance worker can be efficiently guided to the electrical elements (for example, strings) to be subjected to the maintenance work, and the arrival time at the maintenance work site can be shortened.

  Further, according to one embodiment of the present invention, the control unit is configured to select an electrical element that is determined to be abnormal among electrical elements that constitute at least a part of the photovoltaic power generation system. A portable terminal that outputs a predetermined sound to a first external device provided within an installation range of the photovoltaic power generation system, lights a predetermined color, or transmits a signal of a specific frequency.

  In this configuration, the control unit of the mobile terminal is within the installation range of the photovoltaic power generation system according to the selection operation of the electrical element determined to be abnormal among one or more strings in the photovoltaic power generation system. A predetermined sound is output to a first external device provided (for example, a dedicated terminal installed on a pole), light of a predetermined color is turned on, or a signal of a specific frequency is transmitted.

  Thereby, the portable terminal performs maintenance by causing the first external device provided within the installation range of the photovoltaic power generation system to output a predetermined sound, lighting a predetermined color, or transmitting a signal of a specific frequency. An operator can be efficiently guided to electrical elements (for example, strings) to be subjected to maintenance work, and the arrival time at the maintenance work site can be shortened.

  Further, according to one embodiment of the present invention, the control unit is configured to select an electrical element that is determined to be abnormal among electrical elements that constitute at least a part of the photovoltaic power generation system. , Transmitting a signal of a specific frequency to a wireless measuring device that measures the amount of power generation in photovoltaic power generation of the selected electrical element, and sending the signal to a second external device possessed by a maintenance worker of the photovoltaic power generation system A portable terminal that receives a signal of a specific frequency.

  In this configuration, the control unit of the portable terminal selects the selected electric element in response to the selection operation of the electric element that is determined to be abnormal among the electric elements that constitute at least a part of the photovoltaic power generation system. A specific frequency signal is transmitted to a wireless measuring device (string monitor slave unit) that measures the amount of power generation in the photovoltaic power generation of the basic element, and the second external device possessed by the maintenance staff of the photovoltaic power generation system has the specific frequency. The signal is received.

  As a result, the portable terminal causes the maintenance operator to transmit a signal of a specific frequency to the string monitor slave unit that measures the power generation amount of the electric element (for example) string that is the object of the maintenance work, and further, the maintenance worker possesses it. By allowing the second external device to receive a signal of a specific frequency, the maintenance worker can be efficiently guided to the string to be subjected to the maintenance work, and the arrival time at the maintenance work site can be shortened. be able to.

  Moreover, one Embodiment of this invention is a connection display method in the display apparatus used in the solar power generation system containing several solar panels, Comprising: At least one part electrical element of the said solar power generation system is displayed. A connection display method comprising: a step; receiving a selection of at least some of the electrical elements of the photovoltaic system; and displaying an electrical connection relationship of the selected electrical elements. .

  In this method, the display device displays at least a part of the photovoltaic power generation system including a plurality of solar panels on the display unit, and electrical elements constituting a part of the photovoltaic power generation system are selected by the operation unit. If it is, the electrical connection state of the selected electrical element is displayed on the display unit.

  Thereby, the display device is selected when an electrical element (for example, a solar panel) constituting a part of the photovoltaic power generation system is selected on the display unit in maintenance work by a maintenance worker, for example. The electrical connection relationship of the elements can be visually shown. Therefore, the display device can shorten the time required for the maintenance worker to specify the PV panel to be subjected to the maintenance work, and can suppress the deterioration of the work efficiency of the maintenance worker.

  While various embodiments have been described above with reference to the drawings, it goes without saying that the present invention is not limited to such examples. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  The present invention shortens the time required for an operator to specify a PV panel to be maintained in a string determined to be abnormal in a photovoltaic power generation system, thereby reducing the work efficiency of the worker. It is useful for a portable terminal and a connection display method that suppresses the above.

11A1, 11A2, 11A3, 11A4, 11A5, 12A1, 12A2, 12A3, 12A4, 12A5, 13A1, 13A2, 13A3, 13A4, 13A5 PV panel 40, AB40 Connection box 50, 50a, 50b Power conditioner 60 Portable terminal 60P Portable terminal Position 61 Operation part 62 Display part 63, SL7 Position information acquisition part 64, SL2 Control part 65 Communication part 66 Solar power generation system DB
80 Data logger 90 Monitor server 100 Solar power generation system ABSTR String AB50a determined to be abnormal Power conditioner CNT, CNTL1 determined to be abnormal Connection line EXM Dedicated terminal MMS String monitor master unit MP String map data MSL1, MSL2, MSL3 String monitor slave unit PV1, PV2, PV3, PV4, PV5, PV6, PV7, PV8, PV9, PV10 PV panel RC2 Receiver RC3 Signal level determination unit RCM Receiver terminal RC1, SL1 Power supply unit SL3 Current detection unit SL4 Voltage Detection unit SL5 Wired communication unit SL6 Wireless communication unit SL8 Notification unit STR, STR1, STR2, STR3, STR21 String

Claims (18)

A display unit capable of displaying at least a part of a photovoltaic power generation system including a plurality of solar panels;
An operation unit capable of selecting an electrical element constituting at least a part of the photovoltaic power generation system;
A control unit that causes the display unit to display an electrical connection state of the electrical element selected by the operation unit.
Display device. The display device according to claim 1,
In the operation unit, when the solar panel is selected as the electrical element,
The controller is
Displaying at least the cable connected to the solar panel on the display unit;
Display device. The display device according to claim 1 or 2,
When the solar power generation system includes one or more strings in which the plurality of solar panels are connected in series, and an electric element constituting at least a part of the strings is selected in the operation unit,
The controller is
Displaying a connection state of a plurality of solar panels constituting at least a part of the string on the display unit;
Display device. The display device according to claim 1,
The solar power generation system includes a connection box for concentrating a plurality of strings in which the plurality of solar panels are connected in series, and an electric element constituting at least a part of the strings is selected in the operation unit. ,
The controller is
Displaying at least the connection box on the display unit;
Display device. The display device according to claim 4,
When the connection box is selected in the operation unit,
The controller is
Causing the display unit to display an electrical element constituting at least a part of the string connected to the connection box;
Display device. The display device according to claim 1,
When the solar power generation system includes a power generation control device that controls output power of at least one solar panel, and the electrical element connected to the power generation control device is selected in the operation unit,
The controller is
Displaying at least the power generation control device on the display unit;
Display device. The display device according to claim 6,
When the power generation control device is selected in the operation unit,
The controller is
Displaying the electrical element connected to the power generation control device on the display unit;
Display device. The display device according to claim 3,
A storage unit that stores first connection state data indicating a connection state of solar panels forming each string for each of the strings,
The display unit
Displaying map data indicating an installation position of the one or more strings in the solar power generation system;
The controller is
In the map data displayed on the display unit, the selected string is formed using the first connection state data in response to a selection operation of any one of the one or more strings. Displaying the connection state of the plurality of solar panels on the display unit;
Display device. The display device according to claim 4 or 5,
a storage unit for storing second connection state data indicating a connection state of n (n: an integer of 2 or more) strings and a connection box for collecting power lines individually connecting the n strings; Prepared,
The controller is
A connection state between the selected string and the connection box corresponding to the selected string using the second connection state data in response to a selection operation of any one of the n strings. Is displayed on the display unit,
Display device. The display device according to claim 8,
The storage unit
n (n: an integer of 2 or more) strings, a connection box for collecting power lines individually connecting the n strings, and m (m: an integer of 2 or more) of the connection boxes ( n × m) third connection state data indicating a connection state with a power conditioner that converts DC power measured by the strings into predetermined power;
The controller is
In response to a selection operation of any one of the (n × m) strings in the map data displayed on the display unit, the string selected using the third connection state data Displaying the connection state between the connection box and the inverter corresponding to the selected string on the display unit;
Display device. The display device according to claim 8,
The storage unit
n (n: an integer of 2 or more) strings, a connection box for collecting power lines individually connecting the n strings, and m (m: an integer of 2 or more) of the connection boxes ( n × m) third connection state data indicating a connection state with a power conditioner that converts DC power measured by the strings into predetermined power;
The controller is
Corresponding to the selected power conditioner and the selected power conditioner using the third connection state data according to the selection operation of the power conditioner in the map data displayed on the display unit Display the connection state of the m connection boxes and the (n × m) strings on the display unit.
Display device. A display unit capable of displaying at least a part of a photovoltaic power generation system including a plurality of solar panels;
An abnormality detection unit capable of detecting an abnormality of an electrical element constituting at least a part of the photovoltaic power generation system;
A display unit that displays on the display unit the electrical connection relationship of the electrical elements detected by the abnormality detection unit,
Display device. A display unit capable of displaying at least a part of a photovoltaic power generation system including a plurality of solar panels;
An abnormality detection unit capable of detecting an abnormality of an electrical element constituting at least a part of the photovoltaic power generation system;
A control unit that causes the display unit to display an electrical connection relationship of electrical elements detected by the abnormality detection unit;
A power storage unit capable of storing electric power and capable of supplying power to the display unit,
Mobile device. The mobile terminal according to claim 13,
A location information acquisition unit that acquires location information of the mobile terminal;
The controller is
The position information of the mobile terminal acquired by the position information acquisition unit is further displayed on the electrical connection relationship of the electrical elements constituting at least a part of the photovoltaic power generation system displayed on the display unit,
Mobile device. The mobile terminal according to claim 14,
The controller is
Amount of power generated in photovoltaic power generation of the electrical element selected according to the selection operation of the electrical element determined to be abnormal among electrical elements constituting at least a part of the photovoltaic power generation system A wireless measuring device for measuring the output of a predetermined sound, turning on a light of a predetermined color, or transmitting a signal of a specific frequency,
Mobile device. The mobile terminal according to claim 14,
The controller is
According to the selection operation of the electrical element determined to be abnormal among the electrical elements constituting at least a part of the solar power generation system, the first provided in the installation range of the solar power generation system A predetermined sound is output to one external device, light of a predetermined color is turned on, or a signal of a specific frequency is transmitted.
Mobile device. The mobile terminal according to claim 14,
The controller is
Amount of power generated in photovoltaic power generation of the electrical element selected according to the selection operation of the electrical element determined to be abnormal among electrical elements constituting at least a part of the photovoltaic power generation system To output a signal of a specific frequency to a wireless measuring device that measures the frequency, and to cause a second external device possessed by a maintenance worker of the solar power generation system to receive a signal of a specific frequency,
Mobile device. A connection display method in a display device used in a solar power generation system including a plurality of solar panels,
Displaying at least some electrical elements of the photovoltaic system;
Receiving a selection of at least some electrical elements of the photovoltaic system;
Displaying the electrical connection relationship of the selected electrical elements.
Connection display method.