WO2013125164A1 - Dispositif de conversion, dispositif de contrôle, procédé de contrôle, et système de distribution de puissance - Google Patents

Dispositif de conversion, dispositif de contrôle, procédé de contrôle, et système de distribution de puissance Download PDF

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Publication number
WO2013125164A1
WO2013125164A1 PCT/JP2013/000603 JP2013000603W WO2013125164A1 WO 2013125164 A1 WO2013125164 A1 WO 2013125164A1 JP 2013000603 W JP2013000603 W JP 2013000603W WO 2013125164 A1 WO2013125164 A1 WO 2013125164A1
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WIPO (PCT)
Prior art keywords
frequency
power
mode
unit
conversion
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PCT/JP2013/000603
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English (en)
Japanese (ja)
Inventor
岩▲崎▼　利哉
久保　守
大樹 中津
之浩 稲葉
Original Assignee
三洋電機株式会社
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Publication of WO2013125164A1 publication Critical patent/WO2013125164A1/fr

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current

Definitions

  • the present invention relates to a conversion technique, and more particularly to a conversion device, a control device, a control method, and a power distribution system that perform conversion from DC power to AC power.
  • the electric power generated in the solar battery is stored in the storage battery.
  • the generated power is lower than the power consumption required by the load, such as when it is cloudy or at night, the power consumption is satisfied by supplying the power stored in the storage battery to the load. With such a configuration, even when the power generated in the solar cell is insufficient, power is stably supplied to the load.
  • an interconnection protection device has been installed between the commercial power supply and the interconnection breaker.
  • the interconnection protection device detects whether there is an abnormality in voltage, frequency or the like on the commercial power supply side. If the commercial power supply side is normal, the power conversion device repeatedly performs charge / discharge operations corresponding to day and night time zones by performing grid connection operation. On the other hand, when the commercial power supply side fails, the interconnection breaker is shut off at high speed, and the operation control mode of the power converter is switched from current control to voltage control. As a result, the power converter performs a discharge operation (self-sustained operation), so that power is supplied without interruption (see, for example, Patent Document 1).
  • the present inventor has recognized the following problems.
  • the power conversion device stores the frequency, and uses the stored frequency during the independent operation. Therefore, the frequency of the commercial power source at the time of the shipping test is stored in the shipped power conversion device. For example, when the shipping test is performed in West Japan, 60 Hz is stored. If a power failure occurs when such a power conversion device is installed for the first time after the installation, the power conversion device performs a self-sustained operation at the frequency of the commercial power supply at the time of the shipping test. On the other hand, if the installation location is East Japan, the frequency of the commercial power supply is 50 Hz, so the frequency is different.
  • the frequency of power allowed for the load of the motor system is limited to the frequency of the commercial power supply in the installed area. For example, if a motor system load with 50 Hz AC power specifications is operated with 60 Hz AC power, there is a risk of ignition due to overload.
  • This invention is made
  • the objective is to provide the technique which reduces the influence which acts on a load, even when the frequency of a commercial power source and the frequency of a self-sustained operation differ. .
  • a converter includes a converter that generates AC power from DC power, a controller that controls the frequency of AC power to be generated in the converter, and a controller. And a display unit for displaying the control content.
  • the control unit executes, in the conversion unit, either a first mode for setting a frequency corresponding to a frequency in the AC power of the commercial power source or a second mode for setting a frequency independent of the frequency in the AC power of the commercial power source.
  • the frequency set when the conversion unit has executed the first mode in the past is displayed on the display unit as the frequency when the conversion unit executes the second mode.
  • This device is a control device that controls the frequency of AC power generated in a conversion unit that converts DC power into AC power, and includes a first mode that sets a frequency according to the frequency of AC power from a commercial power source, When causing the converter to execute one of the second mode for setting the frequency independent of the frequency of the AC power of the power source, and when starting the converter, when the converter executes the first mode in the past
  • the set frequency is displayed on the display unit as a frequency when the conversion unit executes the second mode.
  • Still another aspect of the present invention is a control method.
  • This method is a method of setting the frequency of AC power generated in a conversion unit that converts DC power into AC power, the first mode for setting the frequency according to the frequency of AC power of the commercial power source, and the commercial power source.
  • the converter is caused to execute any one of the second mode for setting the frequency independent of the frequency in the AC power of the power, and when the converter is started, the frequency set when the first mode is executed in the past is set.
  • the conversion unit displays the frequency on the display unit as the frequency for executing the second mode.
  • Still another aspect of the present invention is a power distribution system.
  • This power distribution system includes a generator, a conversion unit that converts DC power generated by the generator into AC power, a control unit that controls the frequency of AC power to be generated in the conversion unit, and control contents of the control unit
  • the display part which displays.
  • the control unit executes, in the conversion unit, either a first mode for setting a frequency corresponding to a frequency in the AC power of the commercial power source or a second mode for setting a frequency independent of the frequency in the AC power of the commercial power source.
  • the frequency set when the conversion unit has executed the first mode in the past is displayed on the display unit as the frequency when the conversion unit executes the second mode.
  • the influence on the load can be reduced.
  • FIGS. 1A to 1C are diagrams showing a configuration of a power distribution system according to an embodiment of the present invention. It is a figure which shows the structure of the conversion apparatus of Fig.1 (a)-(c). It is a figure which shows the transition of the screen by the process part of FIG. It is a figure which shows the screen displayed on the display part of FIG. It is a figure which shows the transition of the screen by the process part which concerns on the modification of this invention. It is a figure which shows the screen displayed on the display part which concerns on the modification of this invention. It is a figure which shows another screen displayed on the display part which concerns on the modification of this invention. It is a figure which shows another screen displayed on the display part which concerns on the modification of this invention. It is a figure which shows another screen displayed on the display part which concerns on the modification of this invention. It is a figure which shows another screen displayed on the display part which concerns on the modification of this invention. It is a figure which shows another screen displayed on the display part which concerns on the modification of this invention.
  • Embodiments of the present invention relate to a power distribution system that connects a solar cell in parallel with a commercial power system, supplies power from both the commercial power source and the solar cell to a load, and charges the storage battery.
  • the commercial power supply fails, power from the solar battery or storage battery is supplied to the load.
  • a converter converts direct-current power into alternating current power, and supplies alternating current power to load.
  • the conversion device may output AC power in order to reduce power consumption from the commercial power source even when the commercial power source has not failed.
  • the conversion device when the commercial power supply has not failed, the conversion device generates AC power from the DC power by using a frequency corresponding to the frequency of the power of the commercial power supply. This corresponds to the aforementioned grid interconnection operation.
  • the converter when the commercial power supply has a power failure, the converter generates AC power from the DC power by using a frequency that is independent of the frequency of the power of the commercial power supply. This corresponds to the above-described independent operation.
  • the conversion device is equipped with an LCD (Liquid Crystal Display). Further, the conversion device stores the frequency at which the autonomous operation is executed, that is, the frequency set at the time of the previous grid interconnection operation. When the conversion device is activated, it first displays on the LCD information relating to the frequency at which the autonomous operation is executed. For example, “The self-supporting frequency of this converter is 60 Hz. Please check if the frequency matches the area where you live. If it is different, please contact us (for example, contact the service)”. A message is displayed. By confirming this message, the power company employee or the user of the converter recognizes that the frequency of the power supplied from the converter to the load is different from the frequency allowed in the load. As a result, it is possible to prevent the AC power of the conversion device from being output to the load.
  • LCD Liquid Crystal Display
  • FIGS. 1A to 1C show a configuration of a power distribution system 100 according to an embodiment of the present invention.
  • the power distribution system 100 includes a solar cell 10, a storage battery 12, a conversion device 14, a management device 16, a first SW 18, a second SW 20, a specific load 24, and a general load 26.
  • the power distribution system 100 is connected to a commercial power source 22.
  • the commercial power source 22 is an AC power source for supplying power from an electric power company.
  • FIG. 1A corresponds to the configuration of the power distribution system 100 when the commercial power supply 22 is not out of power (hereinafter referred to as “normal time”).
  • the solar cell 10 is a power device that uses the photovoltaic effect to directly convert light energy into electric power.
  • a silicon solar cell a solar cell made of various compound semiconductors, a dye-sensitized type (organic solar cell), or the like is used.
  • the solar cell 10 outputs the generated power.
  • the storage battery 12 is charged with electric power generated based on a renewable energy source, that is, electric power generated in the solar battery 10 or electric power from the commercial power source 22.
  • the conversion device 14 connects the solar cell 10 to one end side.
  • route of the converter 14 and the solar cell 10 is branched on the way, and the storage battery 12 is connected to the branched path
  • the management device 16 outputs an instruction for controlling the operation of the storage battery 12 to the conversion device 14. Moreover, the converter 14 always monitors the voltage fluctuation on the path
  • the general load 26 is an AC drive type electric device.
  • the general load 26 is connected to a path branched from the path between the converter 14 and the commercial power supply 22.
  • a reverse power flow sensor and a distribution board are connected on the path between the converter 14 and the commercial power supply 22 and from the branch point to the commercial power supply 22 to the commercial power supply 22 side.
  • the reverse power flow sensor is installed between the distribution board and the commercial power supply 22 and detects electric power from the distribution board to the commercial power supply 22. This is to prevent power from going from the distribution board to the commercial power supply 22. Since a known technique may be used for the detection process in the reverse power flow sensor, description thereof is omitted here.
  • the first SW 18 and the second SW 20 are switches for changing a route in accordance with an instruction from the management device 16. On / off and switching of the first SW 18 and the second SW 20 are instructed by the conversion device 14. It may be instructed by the management device 16. In a normal state, the first SW 18 is turned on, and the second SW 20 is connected to the Y-side terminal. As a result, the Y-side terminal of the second SW 20 and the specific load 24 are connected.
  • the specific load 24 is an AC drive type electric device, like the general load 26. According to such a form, the normal (1) charge and (2) discharge are performed as follows.
  • the electricity rate at night time is set lower than the electricity rate at daytime.
  • the daytime time zone is defined as from 7:00 to 23:00
  • the nighttime zone is defined as from 23:00 to 7:00 on the next day. Therefore, the electric power supplied from the commercial power source 22 is charged to the storage battery 12 via the first SW 18 and the converter 14 in the night time zone.
  • the converter 14 converts the AC power input from the commercial power supply 22 into DC power, and outputs the DC power to the storage battery 12.
  • the electric power generated by the solar cell 10 is output to the conversion device 14 during the daytime.
  • surplus electric power is charged in the storage battery 12.
  • the converter 14 converts the DC power input from the solar cell 10 into AC power, and outputs the AC power to the first SW 18.
  • the conversion device 14 converts AC power into DC power, or converts DC power into AC power.
  • any known technique may be used for these conversion processes. The description is omitted here.
  • FIG. 1B corresponds to the configuration of the power distribution system 100 when the commercial power source 22 has a power failure (hereinafter referred to as “at the time of a power failure”).
  • the conversion device 14 detects a power failure.
  • the conversion device 14 controls the first SW 18 and the second SW 20. More specifically, during a power failure, the first SW 18 is turned off and the second SW 20 is connected to the X-side terminal.
  • the specific load 24 is connected to the conversion device 14, but the general load 26 is disconnected from the conversion device 14. Therefore, the power from the solar cell 10 is output to the conversion device 14, and the power from the conversion device 14 is supplied to the specific load 24.
  • the storage battery 12 may output electric power at the time of a power failure.
  • the discharged power is also output to the converter 14, and the power from the converter 14 is supplied to the specific load 24.
  • the specific load 24 can receive power from the solar cell 10, the storage battery 12, and the commercial power source 22 during normal times, and can also supply power from the solar cell 10 and the storage battery 12 during power outages. It is possible to receive.
  • the general load 26 can be supplied with power from the solar battery 10, the storage battery 12, and the commercial power source 22 at normal times, but cannot be supplied with power at the time of a power failure.
  • FIG. 1C corresponds to the configuration of the power distribution system 100 when the commercial power source 22 is restored from a power failure to a state where the power failure has not occurred (hereinafter referred to as “at the time of restoration”).
  • the converter 14 detects the recovery.
  • the conversion device 14 controls the second SW 20. More specifically, at the time of recovery, the first SW 18 is kept off, and the second SW 20 is connected to the Y-side terminal.
  • the specific load 24 and the general load 26 are disconnected from the conversion device 14 and connected to the commercial power supply 22.
  • the electric power from the commercial power supply 22 is supplied to the specific load 24 and the general load 26.
  • the converter 14 since the specific load 24 and the general load 26 are not connected to the converter 14, the converter 14 does not output alternating current power.
  • the electric power generated in the solar cell 10 is supplied to the storage battery 12.
  • the conversion device 14 is executing the system linkage operation.
  • the converter 14 is performing a self-sustaining operation.
  • FIG. 2 shows the configuration of the conversion device 14.
  • the conversion device 14 includes a conversion unit 50, a detection unit 52, a display unit 58, an input unit 60, and a control unit 66.
  • the conversion unit 50 includes a DC side terminal 62 and an AC side terminal 64.
  • the control unit 66 includes a setting unit 54 and a processing unit 56.
  • the converter 50 connects the solar cell 10 and the storage battery 12 of FIGS. 1A to 1C to the DC side terminal 62, and connects the first SW 18 of FIGS. 1A to 1C to the AC side terminal 64. . Therefore, the DC side terminal 62 corresponds to the DC power side, and the AC side terminal 64 corresponds to the AC power side.
  • the converter 50 inputs DC power at the DC side terminal 62, generates AC power from the DC power, and outputs AC power from the AC side terminal 64.
  • the DC power input to the DC side terminal 62 is output from the solar cell 10 and the storage battery 12 shown in FIGS.
  • the converter 50 inputs AC power at the AC side terminal 64, generates DC power from the AC power, and outputs DC power from the DC side terminal 62.
  • the AC power input to the AC side terminal 64 is output from the commercial power supply 22 via the first SW 18 in FIGS.
  • the former corresponds to an inverter function, and the latter corresponds to a converter function. Since a known technique may be used for the inverter function and the converter function, description thereof is omitted here.
  • the setting unit 54 sets the frequency of AC power when generating AC power from DC power.
  • the detection unit 52 receives AC power from the first SW 18, that is, AC power from the commercial power source 22, and detects the frequency of the AC power. At the time of a power failure or recovery, the detection unit 52 does not input AC power from the commercial power supply 22 and therefore does not detect the frequency of AC power. When detecting the frequency, the detection unit 52 outputs information regarding the detected frequency to the setting unit 54, and when not detecting the frequency, the detection unit 52 outputs the information to the setting unit 54.
  • the setting unit 54 receives information about the frequency or information about not detecting the frequency from the detection unit 52.
  • the setting unit 54 sets the frequency according to the frequency, that is, the frequency in the AC power of the commercial power supply 22.
  • the same frequency as the frequency in the AC power of the commercial power supply 22 is set. This corresponds to the above-described grid interconnection operation, and the setting unit 54 refers to a grid interconnection mode.
  • the setting unit 54 When the setting unit 54 receives information regarding the fact that the frequency has not been detected, the setting unit 54 sets a frequency that is independent of the frequency of the AC power of the commercial power supply 22 and that has been set in the system linkage mode that has been executed in the past. To do. This corresponds to the above-described self-sustained operation, and the setting unit 54 refers to the self-sustained mode. As described above, the setting unit 54 sets the frequency of the AC power to be generated by the conversion unit 50.
  • the processing unit 56 controls various operations of the conversion device 14, on / off of the first SW 18, and switching of the second SW 20. Further, the processing unit 56 controls the operation of the storage battery 12 based on an instruction from the management device 16. Since the inverter function and the converter function are performed by the conversion unit 50, the detection unit 52, and the setting unit 54, the processing unit 56 executes other processes in the conversion device 14. For example, the activation processing of the conversion device 14, the recording processing of various data, and the screen generation processing on the display unit 58. Here, in particular, a startup process and a screen generation process will be described. In order to cause the processing unit 56 to execute processing, the input unit 60 receives an instruction. An example of the instruction is an activation instruction.
  • FIG. 3 shows the transition of the screen displayed on the display unit 58 by the processing unit 56.
  • the processing unit 56 When the input unit 60 receives an instruction to start the conversion device 14, the processing unit 56 generates a start screen. Here, on the startup screen, “This converter's self-supporting frequency is 60 Hz. Please check if the frequency matches the area where you live. Message) "is also displayed.
  • the processing unit 56 makes a transition to the default main display screen.
  • the processing unit 56 transitions to the default main display screen after a predetermined time has elapsed after the startup screen is displayed.
  • the processing unit 56 displays the default main display screen, generally, the conversion device 14 has been activated.
  • the processing unit 56 (1) a setting state display screen, (2) each measured value display screen, and (3) PCS abnormality factor based on the input in the input unit 60
  • the display screen, (4) cumulative data display screen, (5) failure history all display screen, failure history system abnormality display screen, failure history PCS abnormality display screen, and failure history DC display screen are switched and displayed. Further, the processing unit 56 makes a transition from the PCS abnormality factor display screen to any one of the PCS abnormality factor detailed system abnormality display screen, the PCS abnormality factor detailed PCS abnormality display screen, and the PCS abnormality factor detailed DC abnormality display screen. Is also possible.
  • the processing unit 56 (1) accepts the password via the input unit 60 after transitioning from the setting state display screen to the password screen. If the password is correct, the processing unit 56 transitions to a set value / independent frequency setting screen and a time setting screen. Further, the processing unit 56 makes a transition from the set value / independent frequency setting screen and the time setting screen to (1) the setting state display screen.
  • the processing unit 56 In the case of a failure, if the no-operation state continues for a predetermined period, for example, 10 minutes or more, the processing unit 56 automatically transitions to the PCS abnormality factor display screen. At that time, the backlight is turned red. In a normal state, when the no-operation state continues for a predetermined period, for example, 10 minutes or more, the processing unit 56 makes a transition to the default main display screen. At that time, the backlight is made white. Further, when the no-operation state continues for a longer period of time, for example, 20 minutes or more, at normal times, the processing unit 56 turns off the backlight. In case of failure, it remains red and does not turn off. However, when the set value change screen and the time setting screen are displayed, the no-operation state is not detected. Returning to FIG.
  • the display unit 58 displays various screens according to the processing in the processing unit 56. Various screens displayed on the display unit 58 are as shown in FIG. Therefore, the display unit 58 displays the setting contents in the setting unit 54. In particular, the display unit 58 displays the frequency set for the self-supporting mode on the startup screen when starting up. This frequency is the frequency set for the grid link mode when the conversion device 14 was started up last time.
  • FIG. 4 shows a screen displayed on the display unit 58. This corresponds to the above-described startup screen. As shown, the frequency set for the self-supporting mode is displayed.
  • the display unit 58 displays the default main display screen, and displays the default main display screen even if the no-operation state continues for a certain period. That is, the display unit 58 displays the frequency when an input is made during the display of the frequency set for the self-supporting mode, or when a certain period of time has elapsed since the display of the frequency set for the self-supporting mode. Erase.
  • This configuration can be realized in terms of hardware by a CPU, memory, or other LSI of any computer, and in terms of software, it can be realized by a program loaded in the memory, but here it is realized by their cooperation.
  • Draw functional blocks Accordingly, those skilled in the art will understand that these functional blocks can be realized in various forms only by hardware, or by a combination of hardware and software.
  • This modification also relates to a conversion device in a power distribution system including a solar battery, a commercial power source, and a storage battery, as in the embodiment.
  • the converter in an Example cannot set the frequency in a self-supporting mode during starting
  • the converter in the modification can change the frequency in a self-supporting mode during starting.
  • Such frequency setting is set by a software program.
  • the conversion device is activated after being installed by a service person. At that time, the conversion device displays the initial frequency value in the independent mode on the startup screen.
  • the service person checks the start-up screen to compare the frequency of the commercial power source in the installed area with the initial frequency value of the self-sustained mode and determine whether they match. If they do not match, it is determined that the change is necessary, and the service person authenticates with the password and then changes the initial frequency value in the independent mode. It should be noted that password authentication is required so that a general user cannot change the initial frequency value of the independent mode.
  • the power distribution system 100 according to the modification is the same type as that shown in FIGS. 1A to 1C, and the conversion device 14 according to the modification is the same type as that shown in FIG. Here, the difference will be mainly described.
  • the setting part 54 sets the frequency used in the conversion part 50 similarly to the embodiment.
  • the frequency in the self-supporting mode may be any frequency that is independent of the frequency of the AC power of the commercial power supply 22, and does not have to be the frequency set in the system linkage mode executed in the past.
  • the frequency in the self-supporting mode is also set by an input from the input unit 60 at startup.
  • FIG. 5 shows screen transitions by the processing unit 56 according to a modification of the present invention.
  • FIG. 5 is similar to FIG. If an input from the input unit 60 is received while the startup screen is displayed, the processing unit 56 displays a password screen. If the password received via the input unit 60 is correct, the processing unit 56 transitions to the independent frequency setting screen. When the independent frequency setting screen is displayed and the input from the input unit 60 is received, the processing unit 56 outputs the received frequency to the setting unit 54. The setting unit 54 sets the received frequency as the frequency of the independent mode. The processing unit 56 makes a transition from the independent frequency setting screen to the default main display screen.
  • the display unit 58 displays the frequency set for the independent mode on the startup screen.
  • FIG. 6 shows a screen displayed on the display unit 58 according to the modification of the present invention. This corresponds to a start-up screen, and a self-supporting frequency is shown as in FIG.
  • a confirmation button 202 and a change button 204 are also displayed.
  • the display unit 58 displays a default main display screen.
  • the change button 204 is selected via the input unit 60
  • the display unit 58 displays a password screen.
  • FIG. 7 shows another screen displayed on the display unit 58 according to the modification of the present invention. This corresponds to the default main display screen. As shown, a main screen button 206, each measured value button 208, an abnormality factor button 210, an accumulated data button 212, and a failure history button 214 are displayed. When any button is selected via the input unit 60, the display unit 58 displays a screen corresponding to the button.
  • FIG. 8 shows still another screen displayed on the display unit 58 according to the modification of the present invention. This corresponds to a password screen, and corresponds to a screen after the frequency of the independent mode is displayed on the startup screen.
  • a numeric button 216 As shown in the figure, a numeric button 216, an enter button 218, and a return button 220 are displayed. By selecting the number of the number button 216, the input unit 60 receives the password input. When the enter button 218 is selected via the input unit 60 after the password is input, the processing unit 56 performs password authentication.
  • FIG. 9 shows still another screen displayed on the display unit 58 according to the modification of the present invention.
  • This corresponds to an independent frequency setting screen and corresponds to a screen after receiving a password.
  • a 50.0 Hz button 222, a 60.0 Hz button 224, an enter button 226, and a return button 228 are displayed.
  • the 50.0 Hz button 222 and the 60.0 Hz button 224 are frequency candidates that can be set as frequencies in the self-supporting mode.
  • the input unit 60 receives the frequency input. Thereafter, when the input unit 60 accepts the selection of the decision button 226, the processing unit 56 and the setting unit 54 set the frequency in the independent mode.
  • the input unit 60 transitions from the startup screen in which the display unit 58 displays the frequency to the state in which the display unit 58 displays the independent frequency setting screen, the input unit 60 should set the autonomous mode. Accept frequency input.
  • the frequency set for the self-sustained mode is displayed at the time of start-up, so that it can be notified that the frequency of the commercial power supply is different from the frequency of the self-sustaining operation. Further, since it is notified that the frequency of the commercial power supply is different from the frequency of the independent operation, it is possible to avoid supply of AC power by the independent operation. Further, since the supply of AC power by the self-sustained operation is avoided, the influence on the load can be reduced even when the frequency of the commercial power supply is different from the frequency of the self-sustained operation. Further, since the transition is made from the startup screen to the default main display screen, necessary information can be displayed.
  • the frequency set for the independent mode is displayed, and when transitioning from the state displaying the frequency to the state displaying the independent frequency setting screen, the mode is set for the independent mode. Since the input of the frequency to be received is accepted, the frequency in the independent mode can be set. In addition, since the frequency in the independent mode is set at the time of startup, the influence on the load can be reduced even when the frequency of the commercial power supply and the frequency of the independent operation are different. In addition, since the self-supporting frequency setting screen is displayed after accepting the password input, the risk that the frequency in the self-supporting mode is easily changed can be reduced. In addition, since the settable frequency candidates are displayed as the independent frequency setting screen, the risk of setting an incorrect frequency can be reduced.
  • a solar cell 10 is provided to generate power.
  • the present invention is not limited thereto, and for example, a device for generating electric power based on a renewable energy source may be provided in addition to the solar battery 10.
  • a wind power generator for example, a wind power generator. According to this modification, the degree of freedom of the configuration of the power distribution system 100 can be improved.
  • control unit 66 including the setting unit 54 and the processing unit 56 is provided inside the conversion device 14.
  • control unit 66 may be provided outside the conversion device 14.
  • the influence on the load can be reduced.

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  • Supply And Distribution Of Alternating Current (AREA)
  • Inverter Devices (AREA)

Abstract

Une unité de conversion (50) génère une puissance électrique en courant alternatif à partir de la puissance électrique en courant continu. Une unité de contrôle (66) contrôle la fréquence de la puissance électrique en courant alternatif à générer. Une unité d'affichage (58) affiche les spécificités de contrôle. Une unité de contrôle (66) fait exécuter par l'unité de conversion (58) soit un premier mode permettant de régler une fréquence qui est conforme à la fréquence de la puissance électrique en courant alternatif d'une source d'énergie commerciale, soit un second mode permettant de définir une fréquence qui est indépendante de la fréquence de la puissance électrique en courant alternatif de la source d'énergie commerciale, et pendant le démarrage, l'unité de contrôle (66) fait afficher par l'unité d'affichage (58) la fréquence qui était définie quand l'unité de conversion (50) a fait précédemment exécuter le premier mode comme fréquence pour quand l'unité de conversion (50) exécute le second mode.
PCT/JP2013/000603 2012-02-22 2013-02-04 Dispositif de conversion, dispositif de contrôle, procédé de contrôle, et système de distribution de puissance WO2013125164A1 (fr)

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JP2012036805A JP2013172624A (ja) 2012-02-22 2012-02-22 変換装置、制御装置、制御方法、配電システム
JP2012-036805 2012-02-22

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WO2018225208A1 (fr) 2017-06-08 2018-12-13 三菱電機株式会社 Système de commande de puissance électrique et dispositif de commande
JP6913871B2 (ja) * 2017-12-27 2021-08-04 パナソニックＩｐマネジメント株式会社 制御指令システム、及び電力変換装置
JP7481886B2 (ja) 2020-04-06 2024-05-13 株式会社東芝 電力変換装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008029711A1 (fr) * 2006-09-05 2008-03-13 Toshiba Carrier Corporation Dispositif onduleur séquentiel
JP2010028977A (ja) * 2008-07-18 2010-02-04 Toshiba Carrier Corp 電源装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008029711A1 (fr) * 2006-09-05 2008-03-13 Toshiba Carrier Corporation Dispositif onduleur séquentiel
JP2010028977A (ja) * 2008-07-18 2010-02-04 Toshiba Carrier Corp 電源装置

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