JP2020043660A - Power local production and local consumption system - Google Patents

Abstract

To provide a power local production and local consumption system capable of efficiently utilizing in a region the power derived from renewable energy generated in the region even if an amount of power generation of a power generation device generating power derived from renewable energy fluctuates.SOLUTION: A power local production and local consumption system includes: a switching device for switching a flow of power; a storage unit for storing multiple operation modes of the power local production and local consumption system; and a monitoring device for controlling operation of the switching device, a bidirectional charging/discharging device, and a power storage device according to the operation mode, an amount of power generation of a power generation device, a power supply situation from a system power supply, and an amount of power consumption of a load. When an amount of power generation of the power generation device is equal to or less than a predetermined threshold value, the storage unit performs control such that power is supplied from the power storage device to the bidirectional charging/discharging device and stores at least a first operation mode in which a charge set value of the bidirectional charging/discharging device is changed according to an amount of power generation of the power generation device.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a local power generation and local consumption system for controlling a bidirectional charge / discharge device for a vehicle having a power generation device, a power storage device, and a storage battery that generate power derived from renewable energy.

  BACKGROUND ART Conventionally, an energy management system (EMS) that manages a power supply and demand situation based on power supply from a power generation facility and power demand by a load and charging and discharging of a battery of an electric vehicle is known (for example, Patent Document 1).

  The system disclosed in Patent Literature 1 acquires information such as the amount of power generated by a photovoltaic power generation system, the power consumed by a domestic load, the remaining charge of a residential storage battery, and the state of storage of a vehicle-mounted battery. Electricity demand in the house can be smoothed so that the amount of electric power purchased from the company is suppressed.

JP 2012-210004 A

  There is a need to use so-called local production and local consumption of electric power to efficiently use electric power derived from renewable energy generated in an area in the area.

  In order to achieve such local production and local consumption of electric power, a system as disclosed in Patent Literature 1 controls a bidirectional charge / discharge device for a vehicle including a power generation device that generates electric power derived from renewable energy, a power storage device, and a storage battery. It can be used as a system.

  The amount of power generated by a power generating device that generates power derived from renewable energy such as photovoltaic power varies greatly depending on the weather and time (for example, daytime or nighttime). If the power generation amount of the power generation device that generates power is insufficient, the bidirectional charge / discharge device detects insufficient power supply due to a decrease in the power generation amount of the power generation device, and the bidirectional charge / discharge device abnormally stops.

  In order to achieve local production and local consumption of electric power, the bidirectional charging / discharging device should be controlled so that it does not stop abnormally even when the power generation amount of the power generation device that generates electric power derived from renewable energy is insufficient, and stable It is necessary to allow the charging and discharging to continue, but the system of Patent Document 1 does not consider performing such control.

  Therefore, in the system of Patent Literature 1, it is not possible to avoid abnormal stop of the power generation device when the power generation amount of the power generation device that generates power derived from renewable energy is insufficient.

  Thus, every time the power generation amount of the power generation device that generates electric power derived from renewable energy becomes insufficient, it is necessary to restart the bidirectional charge / discharge device.

  As described above, in the system of Patent Literature 1, the control for responding to the fluctuation of the power generation amount of the power generation device that generates the power derived from the renewable energy is insufficient, and the power derived from the renewable energy generated locally is not used. There was a problem that it could not be used efficiently in the area.

  SUMMARY OF THE INVENTION In view of the problems of the related art, an object of the present invention is to reduce the power generated by a renewable energy generated in a local area in the area even if the power generation amount of the power generation device that generates the power generated from the renewable energy fluctuates. An object of the present invention is to provide a local production and consumption system for electric power that can be used well.

The power local production and local consumption system according to the present invention comprises:
A power generation device that generates power derived from renewable energy, a power storage device that stores power derived from renewable energy, and a power local production and local consumption system that controls a bidirectional charge / discharge device for a vehicle having a storage battery,
The power generation device, the power storage device, the bidirectional charge and discharge device, a switching device that switches the flow of power between the system power supply and the load,
A storage unit that stores a plurality of operation modes that are information indicating the content of control by the power local production and local consumption system, and an input unit that receives designation of the operation mode,
The switching device, the bidirectional charge / discharge device, and the power storage device according to the operation mode and at least one of a power generation amount of the power generation device, a power supply state from a system power supply, and a power consumption amount of a load. And a monitoring device for controlling any one or more operations of
The storage unit controls the operation of the switching device and the power storage device so as to supply power from the power storage device to the bidirectional charging / discharging device, and stores the charge set value of the bidirectional charging / discharging device in the power generation. At least a first operation mode that is changed according to the amount of power generated by the device is stored.

  According to the present invention, the storage unit stores a plurality of operation modes, which are information indicating the contents of control by the local power consumption local production system.

  The monitoring device is configured to switch the switching device, the bidirectional charge / discharge device, and the power storage according to the operation mode and at least one of the power generation amount of the power generation device, the power supply status from the system power supply, and the power consumption amount of the load. Control the operation of any one or more of the devices.

  The storage unit controls the power supply from the power storage device to the bidirectional charge / discharge device, and changes the charge set value of the bidirectional charge / discharge device according to the amount of power generated by the power generation device. At least the mode is stored.

  This allows the bidirectional charging / discharging device to detect a shortage of supply power even when the power generation device that generates power derived from renewable energy runs short when the local power production and local consumption system is not connected to the system power supply. As a result, it is possible to prevent the charging of the storage battery of the vehicle from being stopped.

  Therefore, there is no need to restart the bidirectional charge / discharge device every time the power generation amount of the power generation device that generates power derived from renewable energy becomes insufficient.

  In addition, when the local power generation and local consumption system is connected to the system power supply, when the power supply from the system power supply is stopped or when the power generation amount of the power generation device that generates power derived from renewable energy decreases sharply For example, since the shortage of the power generation amount of the power generation device is compensated for by the power of the power storage device that stores the power derived from renewable energy, the charging of the storage battery of the vehicle can be continued using only the power derived from renewable energy.

  As described above, according to the present invention, even if the power generation amount of the power generation device that generates power derived from renewable energy fluctuates, the power derived from renewable energy generated locally can be efficiently used in the region. It is possible to provide a local production and local consumption system for electric power.

In the power local production and local consumption system according to the present invention,
The storage unit stores the power storage device and the vehicle so that a power supply amount from the system power supply to the load falls within a predetermined range according to a power consumption amount of the load and a power generation amount of the power generation device. It is preferable that at least a second operation mode in which one or both of the storage batteries supply power to the load is stored.

  According to the present invention, the storage unit is configured such that the power supply amount from the system power supply to the load falls within a predetermined range according to the power consumption amount of the load and the power generation amount of the power generation device. At least a second operation mode for causing at least one of the storage batteries of the vehicle to supply power to the load is stored.

  Accordingly, when the power consumption of the load increases beyond the predetermined range, the power corresponding to the increase over the predetermined range is supplied from at least one of the power generation device, the power storage device, and the vehicle including the storage battery. And can be supplemented with power derived from renewable energy.

  As described above, according to the present invention, there is provided an electric power local production and local consumption system capable of efficiently using electric power derived from renewable energy generated in an area in the area in consideration of an increase in electric power due to a load. can do.

In the power local production and local consumption system according to the present invention,
Preferably, in the second operation mode, when the power generation amount of the power generation device exceeds the power consumption amount of the load, the switching device is controlled to charge the power storage device with the power amount that exceeds the power consumption amount.

  According to the present invention, when the amount of power generated by the power generation device exceeds the power consumption of the load while the local power production and local consumption system is controlled in the second operation mode, the power that exceeds the power consumption is stored in the power storage device. Is charged.

  Thereby, the power supply amount from the system power supply to the load falls within a predetermined range, and the power storage device is charged with surplus renewable energy-derived power which is not consumed by the load but surplus of the power generated by the power generation device. Therefore, the power derived from renewable energy is not wasted, and when the power supply from the system power supply is stopped or when the amount of power generated by the power generation device that generates power derived from renewable energy is sharply reduced, The reliability of supplying power derived from renewable energy from the power storage device is increased.

  As described above, according to the present invention, in consideration of an increase in the amount of power due to a load, a local power generation center that can efficiently and more reliably use power derived from renewable energy generated in a region in the region. An extinguishing system can be provided.

The power local production and local consumption system according to the present invention comprises:
A power generation device that generates power derived from renewable energy, a power storage device that stores power derived from renewable energy, and a power local production and local consumption system that controls a bidirectional charge / discharge device for a vehicle having a storage battery,
The power generation device, the power storage device, the bidirectional charge and discharge device, a switching device that switches the flow of power between the system power supply and the load,
A storage unit that stores a plurality of operation modes that are information indicating the content of operation control of the power local production and local consumption system, and an input unit that receives designation of the operation mode,
The switching device, the bidirectional charge / discharge device, and the power storage device according to the operation mode and at least one of a power generation amount of the power generation device, a power supply state from a system power supply, and a power consumption amount of a load. And a monitoring device for controlling any one or more operations of
The storage unit stores at least a third operation mode in which power supply from the power storage device to the power generation device, the bidirectional charge / discharge device, and the load is performed when power supply from the system power supply is stopped. It is characterized by doing.

  According to the present invention, the storage unit stores at least a third operation mode for causing the power storage device to supply power to the power generation device, the bidirectional charge / discharge device, and the load when the power supply from the system power supply is stopped. are doing.

  If the local power for local consumption system is connected to the system power supply and the power supply from the system power supply stops, and if power is not supplied from a power source other than the system power supply, the local power for local consumption and local consumption system stops. Since the power supply to the load is also stopped, a power outage occurs.

  All of the power generation devices, power storage devices, and bidirectional charging / discharging devices that make up the local power consumption and local consumption system perform so-called self-sustained operation, in which they operate independently without receiving power supply from the system power supply. If two or more of the power generator, power storage device, and bidirectional charging / discharging device start the self-sustaining operation at the same time, the frequency of the power supplied from these devices may be different. Therefore, a power outage will occur. According to the power local production and local consumption system having the above configuration, when the power local production and local consumption system is connected to the system power supply, when the power supply from the system power supply is stopped, only the power storage device performs an independent operation, and Since it is controlled to supply power to the power generator, bidirectional charge / discharge device and load instead of the power supply, even if the power supply from the system power supply is stopped, the mismatch of the electric frequency does not occur, The operation of the power local production and local consumption system can be continued, and the power supply to the load can be continued.

  As described above, according to the present invention, even when the power supply from the system power supply is stopped, it is possible to continue to efficiently use the electric power derived from the renewable energy generated in the area in the area. An electric power local production and local consumption system can be provided.

In the power local production and local consumption system according to the present invention,
In the third operation mode, the switching is performed such that when the power storage device has no power storage amount, power is supplied from the bidirectional charge / discharge device to the power generation device, the power storage device, and the load. The switching device controls the device, and after the storage amount of the power storage device becomes equal to or more than a predetermined threshold, supplies the power from the power storage device to the power generation device, the bidirectional charge / discharge device, and the load. Is preferably controlled.

  According to the present invention, when the power local production and local consumption system is controlled in the third operation mode, when the power storage device is in a state of no power storage, the bidirectional charging / discharging device includes the power generation device and the power storage device. Provides power to equipment and loads.

  After that, when the power storage amount of the power generation device becomes equal to or more than the predetermined threshold value, power is again supplied from the power storage device to the power generation device, the bidirectional charge / discharge device, and the load.

  When the power supply from the system power supply is stopped and the local production and local consumption system for electric power is controlled by the third operation mode, and the power storage device is in a state where there is no power storage, the power from the power source other than the power storage device is used. If power is not supplied, a power outage occurs.

  In addition, any of the power generator and the bidirectional charging / discharging device can be a power supply source that performs an independent operation.However, if these devices simultaneously start an independent operation, the frequency of electricity supplied from these devices may be different. Therefore, a power outage will occur.

  According to the power local production and local consumption system having the above configuration, only the bidirectional charging / discharging device is controlled to perform an independent operation and supply power to the power generation device, the power storage device, and the load instead of the system power supply and the power storage device. .

  When the amount of power stored in the power generation device becomes equal to or more than the predetermined threshold, only the power storage device again performs an independent operation to supply power to the power generation device, the bidirectional charge / discharge device, and the load instead of the system power supply. Is controlled as follows.

  As a result, even when the power supply from the system power supply is stopped and the amount of power stored in the power storage device is exhausted, the frequency of electricity does not become inconsistent, and the operation of the local production and local consumption system can be continued. Power supply can be continued.

  As described above, according to the present invention, even when the power supply from the system power supply is stopped and the amount of power stored in the power storage device is exhausted, the power derived from renewable energy generated in the region is reduced within the region. It is possible to provide a local production and local consumption system for electric power that can continue efficient use of power.

FIG. 1 is a block diagram showing an example of the overall configuration of a local power consumption and local consumption system according to an embodiment. 4 is a flowchart showing an outline of the processing contents of the power local production and local consumption system of the present embodiment. 4 is a flowchart showing the processing contents of a first operation mode of the local power production and local consumption system of the present embodiment. 4 is a flowchart showing processing contents of a second operation mode of the local power consumption and local consumption system of the present embodiment. 4 is a flowchart illustrating processing in a third operation mode of the local power consumption and local consumption system according to the present embodiment. The figure which shows the content of the table referred in the process of the electric power local production local consumption system of this embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  First, an example of the entire configuration of the local power production and local consumption system of the present embodiment will be described with reference to FIG.

  The power local production and local consumption system of the present embodiment includes a power generation device 1, a power storage device 2, a bidirectional charge / discharge device 3 for a vehicle 4 having a storage battery, a switching device 5, and a monitoring device 6.

  The power generation device 1, the power storage device 2, the bidirectional charging / discharging device 3, the system power supply 7, the load 8, and the switching device 5 are connected to each other via a power cable or the like so as to be able to receive or transmit power.

  The power generation device 1, the power storage device 2, the bidirectional charge / discharge device 3, the switching device 5, and the monitoring device 6 are connected to a wired communication cable (not shown) or Wi-Fi (registered trademark), Bluetooth (registered trademark), infrared communication, or the like. They are communicably connected to each other by a communication means compatible with the wireless communication standard.

  The power generation device 1 includes a power generation device power conditioner 11 and a power generation facility 12, and supplies power to the power storage device 2, the bidirectional charge / discharge device 3, and the load 8 via the switching device.

  The power generator power conditioner 11 is a DC / AC (Direct Current / Alternate Current) converter that converts DC power generated by the power generation equipment 12 into AC power.

  The power generation equipment 12 is a power generation equipment that generates electric power derived from renewable energy, such as a solar power generation panel, a windmill for wind power generation, a water turbine for hydroelectric power generation, a wave power generation equipment, a tidal power generation equipment, a geothermal power generation equipment, and the like. is there.

  The power storage device 2 is a device that stores power derived from renewable energy generated by the power generation facility 12, and includes a power storage device power conditioner 21, a power storage control unit 22, and a storage battery 23.

  The power storage device power conditioner 21 is a bidirectional DC / AC (Direct Current / Alternate Current) converter that converts DC power into AC power and converts AC power into DC power.

  The power storage control unit 22 includes an arithmetic processing device such as a CPU (Central Processing Unit), a memory, and an I / O (Input / Output) device, and controls operations such as charging and discharging in the power storage device.

  The power storage control unit 22 may be configured by one processor, or may be configured by a plurality of processors that can communicate with each other.

  The storage battery 23 is a storage battery that stores the power supplied from the power generation device 1 or supplies the stored power to the bidirectional charge / discharge device 3 or the load 8. For example, a lithium ion battery, a lead battery, and a sodium-sulfur battery , Fuel cells and the like.

  When charging the power supplied from the power generation device 1 or the power storage device 2 to the vehicle 4 having a storage battery, the bidirectional charge / discharge device 3 converts an AC current into a DC current, and is stored in the vehicle 4 having a storage battery. This is an AC / DC / DC / AC conversion device that converts a direct current into an alternating current when supplying power to the load 8.

  The vehicle 4 having a storage battery is a vehicle having a vehicle-mounted storage battery 41, such as an electric vehicle, a plug-in hybrid vehicle, or a hydrogen vehicle.

  The vehicle-mounted storage battery 41 is a storage battery, such as a lithium-ion battery, a lead battery, a sodium-sulfur battery, or a fuel cell.

  The switching device 5 is connected to the power generation device 1, the power storage device 2, the bidirectional charge / discharge device 3, the system power supply 7 and the load 8 via a power cable, and the like. , For switching the flow of electric power between the system power supply 7 and the load 8, for example, a distribution board.

  The monitoring device 6 is a computer that controls the operation of the switching device, the bidirectional charging / discharging device, and the power storage device, for example, according to the amount of power generated by the power generation device.

  The monitoring device 6 includes a monitoring control unit 61, a storage unit 62, an output unit 63, an input unit 64, and a communication unit 65.

  The monitoring control unit 61 includes an arithmetic processing unit such as a CPU, a memory, and an I / O device. The monitoring control unit 61 may be configured by one processor, or may be configured by a plurality of processors that can communicate with each other.

  The storage unit 62 is configured by a storage device such as a read only memory (ROM), a random access memory (RAM), and a hard disk drive (HDD), and includes setting information of the monitoring device 6 and processing results of the monitoring control unit 61. And so on.

  The output unit 63 is a unit that displays information such as the operation status of the local power consumption and local consumption system output to the user by the monitoring device 6, and is, for example, a liquid crystal display or an organic EL display.

  The input unit 64 is a unit that receives input of information including designation information of a driving mode by a user, and is, for example, a keyboard, a mouse, a touch pad, a touch panel, or another pointing device.

  The communication unit 65 communicates with the power generation device 1, the power storage device 2, the bidirectional charging / discharging device 3, and the switching device 5 via wired communication or wireless communication according to a communication standard such as WiFi (registered trademark). It is configured.

  Next, the outline of the processing contents of the local power generation and local consumption system of the present embodiment will be described with reference to FIG.

When the power local production and local consumption system starts processing, first, the input unit 64 of the monitoring device 6 receives an input of information including operation mode designation information by the user. (Fig. 2 / STEP10)
Next, the monitoring control unit 61 recognizes the specified operation mode from the information including the operation mode specification information received by the input unit 64. (Fig. 2 / STEP20)
Then, the monitoring control unit 61 controls the operation according to the recognized operation mode. (FIG. 2 / STEP 30). The details of the operation according to each operation mode will be described later.

Subsequently, the monitoring control unit 61 determines whether or not a change in the designation of the operation mode by the user has been received. (Fig. 2 / STEP40)
When the determination is affirmative (FIG. 2 / YES in STEP 40), the monitoring control unit 61 repeats the processing in STEP 20 and subsequent steps.

On the other hand, if the determination is negative (FIG. 2 / STEP40: No), the monitoring control unit 61 determines whether or not the operation of stopping the operation by the user has been received. (Fig. 2 / STEP50)
If the determination is negative (FIG. 2 / STEP 50: No), the monitoring control unit 61 repeats the processing of STEP 30 and subsequent steps.

  When the determination is affirmative (FIG. 2 / STEP 50: Yes), the power local production and local consumption system ends the processing.

  Note that the power local production and local consumption system of the present embodiment repeatedly performs these series of processes at fixed short time intervals.

  Subsequently, the contents of the operation according to each operation mode will be described with reference to FIGS.

(First operation mode)
When the processing is started, the monitoring control unit 61 recognizes the power generation amount of the power generation device 1. (FIG. 3A / STEP 310)
Then, the monitoring control unit 61 changes the settings of the switching device 5 and the power storage device 2 so as to supply power from the power storage device to the bidirectional charging / discharging device 3. (FIG. 3A / STEP 311)
Alternatively, the monitoring control unit 61 may determine whether or not the power generation amount of the power generation device 1 is equal to or less than a predetermined threshold before executing STEP 311 (FIG. 3A / STEP 3101).

  In this case, the monitoring control unit 61 acquires a threshold value for making the determination by referring to, for example, a table shown in FIG. 4 and makes the determination.

  If the determination is negative (FIG. 3A / STEP 3101: No), the monitoring control unit 61 ends the processing without performing the subsequent processing.

  On the other hand, when the determination is affirmative (FIG. 3A / STEP 3101: Yes), the monitoring control unit 61 executes the processing after STEP 311.

  Then, after STEP 311, the monitoring control unit 61 changes the charge set value of the bidirectional charge / discharge device 3 according to the amount of power generated by the power generation device 1 (FIG. 3A / STEP 312), and ends the process.

  That is, for example, when the charge set value of the bidirectional charge / discharge device 3 is 5 kW, the monitoring control unit 61 controls the switching device 5 and the power storage device so as to supply power from the power storage device 2 to the bidirectional charge / discharge device 3. In order to avoid the abnormal stop of the bidirectional charging / discharging device 3 due to the further shortage of the electric power, the charging of the bidirectional charging / discharging device 3 is performed according to the power generation amount of the power generating device 1 at the same time. The set value is changed to, for example, 3 kW.

  The monitoring control unit 61 determines the value of the charge set value of the bidirectional charging / discharging device 3 according to the power generation amount of the power generation device 1, for example, by a predetermined ratio of the power generation amount of the power generation device 1 (for example, 30%). %, The numerical value of which can be changed as appropriate), and various methods such as a method of calculating by subtracting the latest power consumption of the load from the latest power generation amount of the power generator 1.

  Since these processes are executed each time STEP 30 in FIG. 2 is performed, once the power generation amount of the insufficient power generation device 1 increases so as to approach a predetermined threshold, the charging of the bidirectional charge / discharge device 3 is performed. The set value can be changed so as to approach the initial set value (5 kW in this embodiment).

  Further, when the amount of power generated by the power generation device 1 becomes equal to or more than the predetermined threshold, the monitoring control unit 61 may return the charge set value of the bidirectional charge / discharge device 3 to the initial set value.

  As described above, according to the present invention, for example, when the power local production and local consumption system is not connected to the system power supply 7, even if the power generation device 1 that generates power derived from renewable energy runs short, It is possible to prevent the charging / discharging device 3 from detecting the shortage of the supplied power and stopping the charging of the storage battery of the vehicle 4.

  For this reason, there is no need to restart the bidirectional charge / discharge device 3 every time the power generation amount of the power generation device 1 that generates power derived from renewable energy becomes insufficient.

  Further, for example, when the power local production and local consumption system is connected to the system power supply 7, when the power supply from the system power supply 7 is stopped or when the power generation amount of the power generation device 1 that generates power derived from renewable energy increases rapidly. In such a case, the shortage of the amount of power generated by the power generation device 1 is compensated for by the power of the power storage device 2 that stores the power derived from renewable energy, so that the storage battery of the vehicle 4 can be charged only with the power derived from renewable energy. Can continue.

(Second operation mode)
When the process is started, the monitoring control unit 61 recognizes the amount of power supplied from the system power supply to the load (FIG. 3B / STEP 320), and recognizes the amount of power generated by the power generation device 1 (FIG. 3B / STEP 321).

Then, the monitoring control unit 61 determines whether the power supply amount from the system power supply to the load is equal to or less than a predetermined threshold. (FIG. 3B / STEP 322)
The monitoring control unit 61 acquires a threshold value for making the determination by referring to, for example, a table as shown in FIG. 4, and makes the determination.

  When the determination is affirmative (FIG. 3B / STEP 322: Yes), the monitoring controller 61 ends the processing without performing the subsequent processing.

  On the other hand, when the determination is negative (FIG. 3B / STEP 322: No), the monitoring control unit 61 switches so that one or both of the power storage device 2 and the in-vehicle storage battery 41 perform power supply to the load 8. The settings of the device 5, the power storage device 2, and the bidirectional charge / discharge device 3 are changed (FIG. 3B / STEP 323), and the process ends.

  In the case where the in-vehicle storage battery 41 is continuously charged, if the amount of power supplied to the bidirectional charging / discharging device becomes insufficient due to the change in the setting, the bidirectional charging / discharging device is controlled in accordance with the supply amount. By changing the charge set value of the charge / discharge device, abnormal stop of the bidirectional charge / discharge device is avoided.

  When the power supply amount from the system power supply to the load becomes equal to or greater than the predetermined threshold, the monitoring control unit 61 returns the settings of the switching device 5, the power storage device 2, and the bidirectional charge / discharge device 3 to the initial state. It may be that.

  As described above, according to the present invention, when the power consumption of the load 8 increases beyond the predetermined range, the power corresponding to the increase over the predetermined range is supplied to the power generation device 1, the power storage device 2, and the storage battery. It can be supplied from any one or more of the vehicles 4 and can be supplemented with electric power derived from renewable energy.

  Alternatively, the monitoring control unit 61 may determine whether or not the power generation amount of the power generation device 1 exceeds the power consumption amount of the load 8 to change the content of the processing.

In this case, after the processing of STEP320 to STEP323 is executed, the monitoring control unit 61 recognizes the power consumption of the load 8. (FIG. 3B / STEP 324)
Then, for example, based on the recognized power consumption of the load 8 and the power generation of the power generation device 1 recognized in STEP 321, the monitoring control unit 61 determines that the power generation of the power generation device 1 exceeds the power consumption of the load 8. Is determined. (FIG. 3B / STEP 325)
When the determination is negative (FIG. 3B / STEP 325: No), the monitoring control unit 61 ends the processing without performing the subsequent processing.

  On the other hand, when the determination is affirmative (FIG. 3B / STEP 325: Yes), the monitoring control unit 61 charges the power storage device 2 with the amount of power that exceeds the power consumption of the load 8 among the amount of power generated by the power generation device 1. Then, the setting of the switching device 5 is changed (FIG. 3B / STEP 326), and the process ends.

  As a result, the amount of power supplied from the system power supply 7 to the load 8 falls within a predetermined range, and excess power from the renewable energy that is not consumed by the load 8 but surplus of the power generated by the power generation device 1 is stored in the power storage device. 2, the power from the renewable energy is not wasted, and the power generation amount of the power generation device 1 that generates the power from the renewable energy when the power supply from the system power supply 7 is stopped or when the power from the renewable energy is stopped is rapidly increased. For example, when the power storage device 2 is reduced, the reliability of supplying power derived from renewable energy from the power storage device 2 is increased.

(Third operation mode)
When the processing is started, the monitoring control unit 61 recognizes the state of power supply from the system power supply to the load. (FIG. 3C / STEP 330)
Then, the monitoring control unit 61 determines whether the power supply from the system power supply has been stopped. (FIG. 3C / STEP331)
If the determination is negative (FIG. 3C / STEP 331: No), the monitoring control unit 61 ends the processing without performing the subsequent processing.

  On the other hand, if the determination is affirmative (FIG. 3C / STEP331: Yes), the monitoring control unit 61 switches to supply power from the power storage device 2 to the power generation device 1, the bidirectional charge / discharge device 3, and the load 8. The setting of the device 5 is changed (FIG. 3C / STEP 332), and the process ends.

  Accordingly, when the local power for local consumption and local consumption system is connected to the system power supply 7, when the power supply from the system power supply 7 is stopped, only the power storage device 2 performs an independent operation to generate power instead of the system power supply 7. Since the power is controlled so as to supply the power to the device 1, the bidirectional charging / discharging device 3, and the load 8, even when the power supply from the system power supply 7 is stopped, the mismatch of the electric frequency does not occur. The operation of the local production and local consumption system can be continued, and the power supply to the load 8 can be continued.

  Alternatively, the monitoring control unit 61 may determine whether or not the power storage amount of the power storage device 2 has run out and change the content of the processing.

In this case, after the processing of STEP 330 to STEP 332 is performed, the monitoring control unit 61 recognizes the amount of power stored in the power storage device 2. (FIG. 3C / STEP333)
Then, it is determined whether the power storage amount of power storage device 2 has run out. (FIG. 3C / STEP334)
If the determination is negative (FIG. 3C / STEP 334: No), the monitoring control unit 61 ends the processing without performing the subsequent processing.

On the other hand, if the determination is affirmative (FIG. 3C / STEP 334: Yes), the monitoring control unit 61 switches to supply power from the bidirectional charge / discharge device 3 to the power generation device 1, the power storage device 2, and the load 8. The setting of the device 5 is changed. (FIG. 3C / STEP335)
Thereafter, the monitoring control unit 61 determines whether or not the charged amount of the power storage device 2 has become equal to or greater than a predetermined threshold. (FIG. 3C / STEP336)
When the determination is negative (FIG. 3C / STEP 336: No), the monitoring control unit 61 repeats the processing from STEP 336.

  On the other hand, when the determination is affirmative (FIG. 3C / STEP 336: Yes), the monitoring control unit 61 again supplies power from the power storage device 2 to the power generation device 1, the bidirectional charge / discharge device 3, and the load 8. The setting of the switching device 5 is changed (FIG. 3C / STEP 337), and the process ends.

  As a result, even when the power supply from the system power supply is stopped, and even when the amount of power stored in the power storage device is exhausted, there is no mismatch in the frequency of electricity, and the operation of the local power generation and local consumption system can be continued. Power supply can also be continued.

  Note that when the power supply from the system power supply 7 is restored, the settings of the switching device 5 and the bidirectional charge / discharge device 3 may be returned to the initial state.

  As described above, according to the present invention, even if the power generation amount of the power generation device 1 that generates power derived from renewable energy fluctuates, the power derived from renewable energy generated locally can be efficiently used within the region. It is possible to provide a power local production and local consumption system that can be used well.

  As described above, the embodiment of the present invention has been described, but the present invention is not limited to this. Various changes can be made without departing from the spirit of the present invention.

  For example, the input unit 64 may receive specification information on a driving schedule by the user, store the information in the storage unit 62, and automatically switch the driving mode at a specified time.

  Alternatively, for example, the power generation device power conditioner 11 may be omitted, and the power storage device power conditioner 21 may function as a power conditioner of the power generation device 1.

DESCRIPTION OF SYMBOLS 1 ... Power generation device, 2 ... Power storage device, 3 ... Bidirectional charge / discharge device, 4 ... Vehicle, 5 ... Switching device, 6 ... Monitoring device, 7 ... System power supply, 8 ... Load, 11 ... Power generation device power conditioner, 12 ... Power generation equipment, 21: power storage device power conditioner, 22: power storage control unit, 23: storage battery, 41: in-vehicle storage battery, 61: monitoring control unit, 62: storage unit, 63: output unit, 64: input unit, 65: communication unit .

Claims (5)

A power generation device that generates power derived from renewable energy, a power storage device that stores power derived from renewable energy, and a power local production and local consumption system that controls a bidirectional charge / discharge device for a vehicle having a storage battery,
The power generation device, the power storage device, the bidirectional charge and discharge device, a switching device that switches the flow of power between the system power supply and the load,
A storage unit that stores a plurality of operation modes that are information indicating the content of operation control of the power local production and local consumption system, and an input unit that receives designation of the operation mode,
The switching device, the bidirectional charge / discharge device, and the power storage device according to the operation mode and at least one of a power generation amount of the power generation device, a power supply state from a system power supply, and a power consumption amount of a load. And a monitoring device for controlling any one or more operations of
The storage unit controls the operation of the switching device and the power storage device so as to supply power from the power storage device to the bidirectional charging / discharging device, and stores the charge set value of the bidirectional charging / discharging device in the power generation. An electric power local production and local consumption system characterized by storing at least a first operation mode that is changed according to a power generation amount of a device. The power local production and local consumption system according to claim 1,
The storage unit stores the power storage device and the vehicle so that a power supply amount from the system power supply to the load falls within a predetermined range according to a power consumption amount of the load and a power generation amount of the power generation device. A power local production and local consumption system, wherein at least a second operation mode for causing one or both of the storage batteries to supply power to the load is stored. The power local production and local consumption system according to claim 2,
The second operation mode is characterized in that when the power generation amount of the power generation device exceeds the power consumption amount of the load, the switching device is controlled to charge the power storage device with the power amount exceeding the power consumption amount. Power local production and consumption system. A power generation device that generates power derived from renewable energy, a power storage device that stores power derived from renewable energy, and a power local production and local consumption system that controls a bidirectional charge / discharge device for a vehicle having a storage battery,
The power generation device, the power storage device, the bidirectional charge and discharge device, a switching device that switches the flow of power between the system power supply and the load,
A storage unit that stores a plurality of operation modes that are information indicating the content of operation control of the power local production and local consumption system, and an input unit that receives designation of the operation mode,
The switching device, the bidirectional charge / discharge device, and the power storage device according to the operation mode and at least one of a power generation amount of the power generation device, a power supply state from a system power supply, and a power consumption amount of a load. And a monitoring device for controlling any one or more operations of
The storage unit stores at least a third operation mode in which power supply from the power storage device to the power generation device, the bidirectional charge / discharge device, and the load is performed when power supply from the system power supply is stopped. A local production and local consumption system for electricity. The power local production and local consumption system according to claim 4,
In the third operation mode, the switching is performed such that when the power storage device has no power storage amount, power is supplied from the bidirectional charge / discharge device to the power generation device, the power storage device, and the load. The switching device controls the device, and after the storage amount of the power storage device becomes equal to or more than a predetermined threshold, supplies the power from the power storage device to the power generation device, the bidirectional charge / discharge device, and the load. Local production and local consumption system for electricity.