JP2015165730A - Power supply system, power supply control device, and power supply control method and program in power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable preferential supply of power to load devices requiring the supply of power in supplying power to the load devices from a photovoltaic power generation device.SOLUTION: In a DC power supply system 1, a switch unit is arranged, in a power supply path, at a position to divide a power supply range to which a power from a photovoltaic power generation device 4 is supplied and a non-power supply range to which a power is not supplied. A switch control unit 62 controls the opening and closing state of the switch unit, and in setting the power supply range to which a power from the photovoltaic power generation device 4 is supplied, sets the power supply range so as to supply power in order from a load device having the highest priority on the basis of information on priority for the load devices L11 to L16 held in a priority holding unit 63.

Description

  The present invention relates to a power supply system that supplies power to a load device connected to a power supply path, a power supply control device, a power supply control method in the power supply system, and a program.

  In recent years, in data centers, communication stations, and the like, construction of a DC power supply system that supplies DC power to various load devices such as routers and servers has been promoted. This DC power supply system converts a commercial AC power into a DC power having a predetermined voltage by a DC power supply device having an AC power system (commercial power system) as an input, and a plurality of loads via a power supply path (power supply line). Supply to the device.

  In this DC power supply system, an AC power system is used as a power source. In the event that an abnormality such as a system fault occurs in the AC power system and a DC voltage cannot be normally output from the DC power supply device to the load device, a fuel cell, an engine generator, or the like may be provided as a power backup. . The above fuel cell, engine generator, and the like require fuel for power generation.

  On the other hand, the solar power generation device can generate power without the need for fuel and can be used as a backup power source. Such a solar power generation device is used in combination with a power conditioner (Power Conditioning Subsystem) that converts electric power generated by itself. This power conditioner (sometimes simply referred to as “PCS” in the following description) boosts (or steps down) the output voltage of the photovoltaic power generator and supplies it to the power feeding path of the power feeding system. A control function is provided for controlling the output power in accordance with the amount of power generated by the power generation device or the like.

  In addition, there exists an electric power supply system of the inverter for grid connection (patent document 1). The power supply system described in Patent Literature 1 prevents the most important consumer from receiving a power supply from the shared storage battery among a plurality of consumers sharing the shared storage battery. For this purpose, the power supply system distributes power to consumers based on the priority information.

JP 2011-208771 A

  By the way, when the PCS described above is connected to a power supply path (power supply line) from the DC power supply device and connected to the output of the DC power supply device, the PCS detects the voltage of the power supply path. For this reason, when power is not supplied to the power supply path due to a power failure of the commercial power system that hits the power source of the DC power supply device or a failure of the DC power supply device, the PCS cannot detect a voltage for operating itself. In that case, the PCS continues the operation by switching the operation state linked to the output of the DC power supply device to the independent operation. The PCS can supply power to the power feeding path within the range of the current capacity that can be supplied in this self-sustaining operation state. However, if the current capacity flowing through the load device is greater than the current capacity that can be supplied from the PCS, or if the solar power generation device cannot obtain a predetermined amount of sunshine, the output power of the solar power generation device decreases from the PCS. When the current capacity that can be supplied decreases, the PCS cannot continue to operate. Once the output of the PCS has been stopped, the voltage cannot be output to the power supply path until the operating voltage for starting the PCS is supplied even if the above case is resolved.

  In addition, when the power generated by the photovoltaic power generation device is supplied to the load device via the PCS in a state where the DC power supply is interrupted, the load device that supplies the power is selected and the total power consumed by the load device is selected. If the amount of power is not limited, the total amount of power may exceed the amount of power that can be supplied from the PCS. In this case as well, there is a problem that the PCS cannot continue to operate as described above.

  This invention is made | formed in view of such a situation, and when supplying electric power from a solar power generation device to a load apparatus, electric power can be preferentially supplied with respect to the load apparatus which needs supply of electric power. A power supply system, a power supply control device, a power supply control method in the power supply system, and a program are provided.

  The present invention has been made to solve the above-described problem, and the power supply system according to the present invention includes a plurality of load devices connected to a power supply path of a power supply device that outputs a voltage from the power supply device to the power supply route. A power generation system for supplying power to the power supply path via a power conditioner, and supplying power from the solar power generation apparatus to the power supply path. The power supply range for supplying power from the photovoltaic power generation device and the non-power supply range for not supplying the power, and a switch unit disposed at a location that controls the open / closed state of the switch unit to control the power supply A switch control unit that sets a power supply range in the route, and priority information that indicates priority order for supplying power from the photovoltaic power generation device to the load device. An order holding unit, and the switch control unit supplies power to the load device based on the amount of power that can be supplied by the photovoltaic power generation device and the priority order information when setting the power supply range. A power supply range to be supplied is set.

  Further, in the power supply system, the switch control unit, when setting the power supply range, based on the amount of power that can be supplied by the solar power generation device and the information on the priority, the load device having a high priority The power supply range is set so that the supply of power is started in order.

  In the power supply system, the priority is set according to one or both of a type of the load device and a position where the load device is installed.

  In the power supply system, the priority is set according to any or all of a time zone, a day of the week, a weather, and a season.

  In the power supply system, the priority is set according to a movement route of a person at the time of a power failure when power cannot be supplied from the power supply device to the power supply path.

  The power supply system may further include a display unit that displays a power supply range in the power supply path, and the display unit presents the power supply range.

  Further, in the power supply system, a setting input for designating the departure place and the destination when a person moves from the departure place to the destination is detected, and information indicating the detected departure place and the destination is output. A setting input unit that displays a travel route between the departure point and the destination, and a recommendation from the departure point to the destination when the setting input unit detects designation of the departure point and the destination A recommended route setting unit configured to set a travel route to be displayed and to display the travel route on the setting input unit, and the priority storage unit according to the travel route recommended by the recommended route setting unit. The priority order of the load device is set and held, and the switch control unit is configured to change the priority order of the load device according to the travel route from the solar power generation device to the And sets a power supply range that supplies power to the load device.

  The power supply system further includes a power supply device including the switch control unit and the priority order holding unit, and the power supply device is connected to the power conditioner in a stopped state in which output is stopped from the power conditioner. It is characterized by supplying an operating voltage that allows power to be output.

  In the power supply system, the switch unit may be configured to open and close the switch unit based on a switch control signal receiving unit that receives a switch control signal from the power supply device and a switch control signal received by the switch control signal receiving unit. And a switch opening / closing section for performing the above.

  In the above power supply system, the switch unit includes a semiconductor switching element for connecting and disconnecting the power supply path.

  The power supply control device of the present invention supplies power from the power supply device to the plurality of load devices connected to the power supply route of the power supply device that outputs a voltage via the power supply route, and the solar power generation device is powered. A power supply control device in a power supply system that is connected to the power supply path via a conditioner and supplies power from the photovoltaic power generation apparatus to the power supply path, the switch unit disposed in the power supply path, Switch control for setting a power supply range in the power supply path by controlling an open / closed state of a switch unit arranged at a position where a power supply range for supplying power from a photovoltaic power generation apparatus and a non-power supply range for not supplying the power are divided And a priority holding unit that holds priority information indicating a priority for supplying power from the photovoltaic power generation device to the load device, The switch control unit sets the power supply range for supplying power to the load device based on the amount of power that can be supplied by the solar power generation device and the priority information when setting the power supply range. It is characterized by.

  Further, the power supply control method of the present invention supplies power from the power supply device to the plurality of load devices connected to the power supply route of the power supply device that outputs a voltage via the power supply route, and the photovoltaic power generation device is powered. A power supply control method in a power supply system that is connected to the power supply path via a conditioner and supplies power from the solar power generation apparatus to the power supply path, wherein power from the solar power generation apparatus is supplied to the power supply path. A step of disposing a switch unit at a location where a power supply range to be supplied and a non-power supply range in which the power is not supplied are divided; and a switch control step of setting the power supply range in the power supply path by controlling an open / closed state of the switch unit A priority order holding step for holding priority order information indicating a priority order for supplying power from the photovoltaic power generation apparatus to the load device; In addition, the switch control step supplies power to the load device based on the amount of power that can be supplied by the photovoltaic power generation device and the priority order information when setting the power supply range. The method includes a step of setting a power supply range.

  The program of the present invention supplies power from the power supply device to the plurality of load devices connected to the power supply path of the power supply device that outputs a voltage via the power supply route, and the photovoltaic power generator is a power conditioner. A power supply system that is connected to the power supply path via the solar power generation apparatus and supplies power from the solar power generation apparatus to the power supply path, and in the power supply path, a power supply range that supplies power from the solar power generation apparatus, and A switch unit disposed at a location that divides a non-power supply range that does not supply power, a switch control unit that controls an open / closed state of the switch unit to set a power supply range in the power supply path, and the solar power generation device A priority level holding unit for holding priority level information indicating a priority level for supplying power to the load device from the computer in the power supply system When setting the power supply range, a step for executing a step of setting a power supply range for supplying power to the load device based on the amount of power that can be supplied by the solar power generation device and the priority information. It is a program.

  According to the power supply system, power supply device, power supply control method and program in the power supply system of the present invention, when power is supplied from the solar power generation device to the power supply path, priority is given to a load device that requires power supply. Power can be supplied.

It is a lineblock diagram showing a schematic structure of direct-current power feeding system 1 concerning a 1st embodiment of the present invention. It is a block diagram which shows the structure of a switch part. It is a block diagram which shows the structural example of PCS5 and the power supply device 6. FIG. It is explanatory drawing which shows the example of the switch control signal CNT. It is explanatory drawing which shows the example of a priority table. 4 is a flowchart showing a procedure of startup processing of the PCS 5 at the time of a power failure in the DC power supply system 1. It is a flowchart which shows the 1st modification of the procedure of the starting process of PCS5. It is a flowchart which shows the 2nd modification of the procedure of the starting process of PCS5. It is explanatory drawing which shows an example of the control panel. It is a block diagram which shows the structural example of the control circuit of a switch part. It is a flowchart which shows the procedure of the electric power supply process based on the priority in a DC power supply system. It is a flowchart which shows the procedure of the electric power supply process by the control panel in a DC power supply system. It is explanatory drawing which shows the example which sets the priority of a load apparatus for every area. It is explanatory drawing which shows the example of the priority table set for every area. It is explanatory drawing which shows the example of the person's flow line at the time of the power failure of a solar power generation device. It is explanatory drawing which shows the example of the priority table set in consideration of a human traffic line. It is explanatory drawing which shows the example of the setting screen of a departure place and a destination. It is explanatory drawing which shows the example of the display screen of a recommended movement route. It is explanatory drawing which shows the example of the priority table set in consideration of a human traffic line. It is a block diagram which shows the structure of DC power supply system 1B which concerns on 2nd Embodiment of this invention. It is a block diagram which shows schematic structure of AC power supply system 1C which concerns on 3rd Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

[First Embodiment]
(Schematic configuration of DC power supply system 1)
FIG. 1 shows a schematic configuration of a DC power supply system 1 according to an embodiment of the present invention. The DC power supply system 1 is an example of a DC power supply system installed in a building such as a data center or a communication station.

A DC power supply system 1 shown in FIG. 1 includes a power receiving facility 2, a DC power supply (REC) 3, a power supply path to a load device, switch units 101 to 116, a photovoltaic power generation device (PV) 4, and a power conditioner (PCS). 5, a power storage device (BATT) 7, a PCS 8, and a power supply device 6.
The power receiving facility 2 includes a circuit breaker (CB) 2A, a transformer 2C, and a protective relay 2D. The protective relay 2D includes, for example, an overcurrent relay, a ground fault relay, an undervoltage relay (all not shown) and the like, and when these relays detect an abnormal state according to each detection condition, The signal is sent to the circuit breaker 2A to open the circuit breaker 2A.
For example, the overcurrent relay opens the circuit breaker 2A when it detects that an overcurrent has flowed through the circuit, and the ground fault relay breaks down when it detects that a ground fault has occurred in the circuit or equipment. When the undervoltage relay detects that the commercial power cannot be received from the commercial power system PS due to a power failure or an accident, the undervoltage relay opens the breaker 2A.

The circuit breaker 2A is provided with an auxiliary contact 2B mechanically interlocked with the main contact, and the open / closed state of the auxiliary contact 2B will be described later as a contact signal Aux indicating the open / closed state of the circuit breaker 2A. It is output to the power supply device 6. That is, the DC power supply system 1 can detect from the contact signal Aux that the commercial power cannot be received from the commercial power system PS due to a power failure or an accident.
In addition, as a method for detecting that the commercial power system PS has failed, for example, a voltage sensor (voltage detection relay) is provided on the secondary side of the transformer 2C, and the commercial power system PS has failed due to this voltage sensor. You may detect that.
In addition, a voltage sensor and a voltage detection circuit for detecting that the commercial power system PS has a power failure are provided in the DC power supply device 3, and this voltage sensor and voltage detection circuit detects that the commercial power system PS has a power failure. May be.

  The transformer 2C steps down a high-voltage AC voltage (for example, three-phase AC 6600V) supplied from the commercial power system PS to a predetermined low-voltage AC voltage (for example, three-phase AC 400V), and converts the low-voltage AC voltage to a DC power supply (REC). ) 3 is supplied. The DC power supply device 3 is a rectifier that converts commercial AC power into DC power, and converts the low-voltage AC voltage input from the transformer 2C into a DC voltage of a predetermined voltage. For example, the DC power supply device 3 is an AC / DC converter, and outputs a DC voltage of 380 V to power supply paths P11 and N11 that are main power supply lines.

A solar power generation device 4 is connected to the power feeding paths P11 and N11 via a switch unit 101 and a power conditioner (PCS) 5. The switch unit 101 includes a switch for connecting / opening between the PCS 5 of the photovoltaic power generation device 4 and the power feeding paths P11 and N11. When the switch unit 101 is in the connected state, the PCS 5 is connected to the DC power supply device 3. Enables linkage to the output of.
In addition, a power storage device (BATT) 7 including a storage battery is connected to the power supply paths P11 and N11 via the switch unit 102 and the PCS8. The switch unit 102 includes a switch for connecting / opening between the PCS 8 of the power storage device 7 and the power feeding paths P11 and N11. When the switch unit 102 is in a connected state, the switch 8 is connected to the output of the DC power supply device 3. Enable to connect to
Moreover, the switch part 111 to the switch part 116 includes a switch for opening and closing the electric circuit in the power supply paths P28 and N28 from the power supply paths P21 and N21. Further, the power supply paths P11 and P21 to the power supply path P28 indicate positive-side power supply lines, and the power supply paths N11 and N21 to the power supply path N28 indicate negative-electrode-side power supply lines.
In the following description, the switch units 101 and 102 and the switch units 111 to 116 are collectively referred to as “switch unit 100”.

  The power storage device 7 includes a secondary battery such as a lithium ion battery, a lead battery, or a nickel metal hydride battery. The power storage device 7 is charged with power from the DC power supply device 3 via the PCS 8 during normal times when the output of the DC power supply device 3 is not in a power failure state where the output is stopped. When the power storage device 7 is in a power failure state in which the output of the DC power supply device 3 is stopped (hereinafter referred to as “at the time of a power failure of the DC power supply device 3”), the stored power is supplied via the PCS 8 to the power supply path P11. And N11. Note that the PCS 8 can also perform charge / discharge control of the power storage device 7 for the purpose of peak cut of electric power used in normal times.

  The solar power generation device (PV) 4 includes a solar cell array (solar cell) 4a. The solar cell array 4a converts solar energy into electric energy and outputs it to the PCS 5. The PCS 5 supplies the power generated by the solar power generation device 4 to the power supply paths P11 and N11 and supplies the power from the DC power supply apparatus 3 to the power supply paths P11 and N11 at the normal time when the DC power supply 3 supplies DC power. Reduce the amount of power used. Further, when a power failure occurs in the DC power supply device 3, the PCS 5 receives a signal indicating that this power failure has occurred from the DC power supply device 3 and the like, and temporarily stops its operation. Thereafter, power supply is started from the PCS 8 of the backup power storage device 7 to the power supply paths P11 and N11. Eventually, the charge accumulated in the power storage device 7 is insufficient or exhausted, and the power supply path P11 When power cannot be supplied to N11, the PCS 5 starts again.

That is, the PCS 5 is activated when power cannot be supplied from the power storage device 7 to the power supply paths P11 and N11 during a power failure of the DC power supply device 3, and the power generated by the solar power generation device 4 is supplied to the power supply paths P11 and N11. Supply.
In this way, the solar power generation device 4 supplies power to a load device that needs to be supplied in a state where power cannot be supplied from both the DC power supply device 3 and the power storage device 7. For example, power is supplied to a lighting device or the like. Details of the PCS 5 will be described later.

Note that in the DC power supply system 1 of the present embodiment, as a basic startup method of the PCS 5, after the PCS 5 stops operating once during a power failure of the DC power supply device 3 that cannot supply power from the commercial power system PS, the power storage device Although an example in which the PCS 5 is restarted when the charge of 7 is insufficient or exhausted will be described, other startup methods may be used as the startup method of the PCS 5.
For example, after the PCS 5 is temporarily stopped at the time of a power failure of the DC power supply device 3, the power supply device 6 detects the bus voltage (voltage of the power supply paths P11 and N11), and this bus voltage is within a reference voltage range, for example, a rated voltage. If it is within ± 10%, the PCS 5 may be restarted. Details of this activation method will be described later.
Further, when the operation of the PCS 5 is temporarily stopped at the time of a power failure of the DC power supply device 3, the power supply device 6 does not receive a signal indicating a power failure of the commercial power system PS, and the power feeding paths P11 and N11 serving as power feeding buses The operation of the PCS 5 may be stopped by detecting that the voltage is a predetermined voltage value or less, for example, a value close to zero voltage. Details of this activation method will be described later.

In addition, the switch unit 101 connected to the PCS 5 is in an open (off) state when a failure (for example, a short circuit between lines) occurs in the system of the power supply paths P11 and N11, and the solar power generation device 4 is disconnected from the system. Separate. In addition, the switch unit 101 is assumed to be in an open (off) state even during a power failure of the DC power supply device 3.
In addition, the switch unit 102 connected to the PCS 8 is opened (off) when a failure occurs in the power supply paths P11 and N11, and separates the power storage device 7 from the system. The switch unit 102 is in a closed (on) state in a normal case where no failure has occurred in the power supply paths P11 and N11.
When the PCS 5 of the solar power generation device 4 and the PCS 8 of the power storage device 7 have a protection function that cuts off the output current when a failure occurs in the power supply paths P11 and N11, the switch units 101 and 102 are omitted. It is also possible to do.

  The power supply paths P11 and N11 are connected to the input side of the distribution board (PDF) 11, and the DC power supply 3 is connected to the power supply paths P21 and N21 via the distribution board 11 from the power supply paths P28 and N28. Electric power is supplied from each load device L11 arranged in the system to the load device L16. Each of the load devices L11 to L16 is a device that operates with DC power supplied from the DC power supply device 3. For example, the load devices L11 to L16 are DC appliances, LED lighting, information devices such as personal computers and servers, and the like. In addition, a switch unit 116 to a switch unit 116 for setting a power supply range for supplying power from the load device L11 to the load device L16 are arranged at predetermined positions in the power supply routes P21 and N21 to the power supply routes P28 and N28. Yes. That is, the switch unit 111 to the switch unit 116 are arranged in the power supply path at a location that divides the power supply range for supplying power from the solar power generation device 4 and the non-power supply range for not supplying power.

  The power supply path will be described in more detail. The power supply paths P11 and N11 are connected to the input side of the distribution board (PDF) 11, and an overcurrent breaker (not shown) in the distribution board 11 is used. The branch circuit branches into power supply paths P21 and N21 and power supply paths P24 and N24. The power feeding paths P21 and N21 are connected to the power feeding paths P22 and N22 via the switch unit 111, and the load device L11 is connected to the power feeding paths P22 and N22. Further, the power feeding paths P23 and N23 are branched from the power feeding paths P22 and N22 via the switch unit 112, and the load device L12 is connected to the power feeding paths P23 and N23.

On the other hand, the power feeding paths P24 and N24 branched from the distribution board 11 are branched to the power feeding paths P25 and N25 via the switch unit 113, and the load device L13 is connected to the power feeding paths P25 and N25. The power feeding paths P24 and N24 are branched to the power feeding paths P26 and N26 via the switch unit 114, and the load device L14 is connected to the power feeding paths P26 and N26. The power feeding paths P26 and N26 are branched to the power feeding paths P27 and N27 via the switch unit 115, and the load device L15 is connected to the power feeding paths P27 and N27. The power feeding paths P26 and N26 are branched to the power feeding paths P28 and N28 via the switch unit 116, and the load device L16 is connected to the power feeding paths P28 and N28.
Note that the switch unit 111 to the switch unit 116 are necessary for the entire system from the power storage device 7 when a power failure occurs in the DC power supply device 3 and thereafter the charge stored in the backup power storage device 7 is insufficient or depleted. When it becomes impossible to supply a sufficient power, it is assumed to be in an open (off) state. And after starting PCS5 of the solar power generation device 4, the open / close state of the switch unit 116 is controlled from the switch unit 111, so that the power supply range can be expanded sequentially.

  FIG. 2 is a configuration diagram illustrating the configuration of the switch unit. The switch unit 100 uses a double-throw contact (two contacts) like the switch SW shown in FIG. 2A to connect or open each of the positive-side feed line P and the negative-side feed line N. It is configured. Note that the switch unit 100 connects or connects only the positive-side power supply line P (or the negative-electrode side power supply line N) using a single throw contact (one contact), like the switch SW shown in FIG. You may make it open. Further, as shown in FIG. 2C, the switch unit 100 includes a first direction switch SWa, a second direction switch SWb, and a contact point of the third direction switch SWc, which are connected to each other in any of the three directions. It may be a T-type switch that can output a voltage input from the other direction in the other two directions or one direction.

  1 and 2 show an example of a switch using a mechanical contact as the switch unit 100. In practice, the switch SW is a semiconductor switching element such as an IGBT (Insulated Gate Bipolar Transistor). It is comprised by the used semiconductor switch. This semiconductor switch is configured to connect and shut off the power supply path, supply DC current to the power supply path and load device of the supply destination when connected, and have the ability to cut off the load current flowing to the load device when cut off Has been. The configuration of the switch unit 100 will be described later.

Returning to FIG. 1, the power supply device 6 cannot supply power to both the power supply paths P <b> 11 and N <b> 11 from both the DC power supply device 3 and the power storage device 7 during the power failure of the DC power supply device 3. When the voltage on the output side) disappears, the PCS 5 is supplied with an operating voltage serving as a reference for starting the PCS 5, and the PCS 5 is started independently. That is, the power supply device 6 supplies the operating voltage that enables the PCS 5 to output power to the stopped PCS 5 whose output has been stopped, so that the PCS 5 is activated independently.
The state in which power is not supplied from the DC power supply device 3 to the power supply paths P11 and N11 is when the commercial power system PS fails, when the DC power supply device 3 fails, or when the power supply paths P11 and N11 are in an accident. Occurs when shut off due to the above.
In addition, the state where power is not supplied from the power storage device 7 to the power supply path occurs when the power storage amount (accumulated charge amount) of the power storage device 7 decreases or when the PCS 8 of the power storage device 7 stops supplying power. . Note that when the PCS 8 of the power storage device 7 stops supplying power, the PCS 8 is intentionally set even when the power storage amount of the power storage device 7 is not depleted for the purpose of holding the power storage amount of the power storage device 7 or the like. It may be stopped.

In addition, after the PCS 5 is activated, the power supply device 6 transmits a switch control signal CNT to the switch unit 100 that is once opened, and controls the open / close state of the switch unit 100. Thereby, the power supply device 6 supplies power from the solar power generation device 4 to the power feeding paths P11 and N11, and controls the power feeding ranges in the power feeding paths P28 and N28 from the power feeding paths P21 and N21.
That is, the power supply device 6 adjusts the power supply range from the power supply paths P21 and N21 to the power supply paths P28 and N28 by controlling the open / close state of the switch section 116 from the switch section 111. Thereby, when the power supply device 6 cannot supply power from both the DC power supply device 3 and the power storage device 7, the load device used during a power failure (for example, a lighting device) supplies power from the solar power generation device 4. And a load device (for example, an air conditioner) that does not supply power can be selected.

  In this way, the power supply device 6 supplies the operating voltage to the PCS 5 when the PCS 5 is stopped and the operating voltage that allows the power to be output from the PCS 5 is not supplied to the PCS 5 from the power supply paths P11 and N11. Supply the PCS 5 to start. Furthermore, the power supply device 6 transmits a switch control signal CNT to the switch unit 100, and controls the open / close state of the switch unit 100 by the switch control signal CNT. Thereby, the power supply device 6 sets the power supply range in the power supply paths P28 and N28 from the power supply paths P21 and N21.

(Configuration of PCS 5 of solar power generation device 4 and power supply device 6)
FIG. 3 is a configuration diagram illustrating a configuration example of the PCS 5 and the power supply device 6 of the solar power generation device 4. As shown in FIG. 3, the PCS 5 includes a power generation amount control unit 51, a grid interconnection control unit 52, and a DC / DC converter 53.

In order to extract the maximum power from the solar power generation device 4, the power generation amount control unit 51 has an operating point (maximum) that maximizes the output of the solar cell array 4a in the IV (current-voltage) characteristics of the solar cell array 4a. Power point). In the solar cell array 4a, the maximum power point is shifted depending on the voltage actually required by the connected load. Since the IV characteristic changes depending on the solar radiation intensity, the module temperature, the state, etc., in order to obtain the maximum power, the optimum voltage or current must be automatically followed. Therefore, the power generation amount control unit 51 controls the solar cell array 4a to operate at the maximum power point. In addition, the power generation amount control unit 51 notifies the power supply device 6 that the power that can be output from the solar power generation device 4 is “information on whether or not the power is greater than or equal to a predetermined value”. This “information on whether or not the power that can be output from the solar power generation device 4 is equal to or greater than a predetermined value” is used as a start condition when the power supply device 6 restarts the PCS 5 that has once stopped operating. It is done.
Further, the grid interconnection control unit 52 detects the voltages of the power feeding paths P11 and N11 serving as power feeding buses, and adjusts the output voltage of the DC / DC converter 53, thereby connecting to the power feeding paths P12 and N12. And control so that the power output from the PCS 5 can be fed. The DC / DC converter 53 is a converter for boosting (or stepping down) the output voltage of the solar power generation device 4 and supplying power to the power feeding paths P11 and N11.

The power supply device 6 (power supply control device) includes a PCS activation unit 61, a bus voltage detection unit 61A, a switch control unit 62, a priority order holding unit 63, a control panel 64, and a storage battery 65.
The bus voltage detector 61A detects the DC voltage of the power supply paths P11 and N11 that are power supply buses.
When the bus voltage detection unit 61A detects that the PCS activation unit 61 cannot supply power to the power supply paths P11 and N11 from both the DC power supply device 3 and the power storage device 7, and no operating voltage is supplied to the PCS 5. In addition, an operating voltage is supplied to the PCS 5 of the solar power generation device 4 by the built-in storage battery 65 to activate the PCS 5 independently. Further, the PCS activation unit 61 controls the activation operation and the stop operation of the PCS 5 and also controls the activation operation and the stop operation of the PCS 8.

The switch control unit 62 controls the switch unit 100 according to control from the control panel 64. The switch control unit 62 transmits the switch control signal CNT to the switch unit 101 and closes the switch unit 101 (on state), thereby connecting the photovoltaic power generation apparatus 4 to the power feeding paths P11 and N11 and connecting them. Let In addition, the switch control unit 62 transmits a switch control signal CNT to the switch unit 102 and closes the switch unit 102 (on state), thereby connecting the power storage device 7 to the power feeding paths P11 and N11 and interconnecting them. Let
Further, the switch control unit 62 transmits a switch control signal CNT from the switch unit 111 to the switch unit 116, and controls the open / close state of the switch unit 116 from the switch unit 111.

  For example, when the power storage device 7 cannot supply power to the load devices L11 to L16 at the time of a power failure of the DC power supply device 3, and the solar power generation device 4 supplies power to the load device, the switch control unit 62 Referring to the priority information about the load devices, based on the priority information, the load devices with higher priority are given priority, and power is supplied in order from the load devices with higher priority. The priority order information is held in the priority order holding unit 63. As will be described later, the load device that supplies power from the solar power generation device 4 can also be selected based on instruction information from the user set on the control panel 64.

  FIG. 4 is an explanatory diagram illustrating an example of the switch control signal CNT. In the example of the switch control signal CNT shown in FIG. 4, the switch control signal CNT includes “switch identification information” and “on / off (open / close) information” of the switch. By transmitting the switch control signal CNT toward the switch unit 100, the switch unit 100 corresponding to the “switch identification information” turns on / off the switch based on the “on / off (open / close) information”. Open / close operation.

Returning to FIG. 3, a dedicated signal line may be provided as a signal path for transmitting the switch control signal CNT to the switch unit 100, and at least one of the power supply paths P11 and N11, P21 and N21 to P28 and N28. You may make it utilize the electric power feeding path | route of a part as a signal wire | line. When a dedicated signal line is provided, power for operating the switch unit 100 can also be supplied from the power supply device 6 via this signal line.
In addition, when using at least a part of the power supply paths P11 and N11, P21 and N21 to P28 and N28 as signal lines, for example, only when the switch unit 111 is in the ON state, The transmission of the switch control signal CNT to the far side from the switch unit 100 in the off state is restricted according to the open / close (on / off) state of the switch unit 116 from the switch unit 111, such as being able to transmit the switch control signal CNT. Further, when the power feeding path is used as a signal line, power for operating the switch unit 100 can be supplied through the power feeding path.

Further, the priority order holding unit 63 gives priority to supplying power for each load device when power is supplied from the solar power generation device 4 to each of the load devices L11 to L16 during a power failure of the DC power supply device 3. Information indicating the order is held as a priority order table.
FIG. 5 is an explanatory diagram illustrating an example of a priority order table. In the priority order table 631 shown in FIG. 5, it is assumed that the power generation possible time of the solar power generation device 4 is “8:00 to 18:00”, and the amount of sunlight in this time zone “8:00 to 18:00”. The load is divided into the time zones “8:00 to 10:00” and “16:00 to 18:00” with a relatively small amount of time and the time zones “10:00 to 16:00” with a relatively large amount of sunlight. Priorities for the devices L11 to L16 are set. That is, the priority order corresponding to the two time zones is set in the priority order table.

  For example, in the time zones “8:00 to 10:00” and “16:00 to 18:00”, the load device L11 (for example, the lighting device) is given the highest priority in the priority order. Rank, load device L13 (for example, a ventilator) is the second highest priority, and load device L12 (for example, air conditioner) is the third highest priority load device. And And in the state which is supplying electric power to the load apparatus L11 of the 1st priority from the solar power generation device 4, the power supply capability of the solar power generation apparatus 4 has the capacity to supply power to the load apparatus L13. In the case, the next second load device L13 is selected to supply power. Further, when the power supply capability of the solar power generation device 4 has sufficient capacity to supply power to the load device L12, the third load device L12 is selected to supply power. The same applies hereinafter.

Also, in the time zone “10:00 to 16:00”, unlike the above priority order table, the priorities of the load device L13 (ventilator) and the load device L12 (air conditioner) are switched. This is because, for example, in the summer, etc., during the time zone “10: 00 to 16:00”, the amount of sunlight may increase and the room temperature may increase, so the priority of the load device L13 (air conditioner) is set higher. Thus, cooling is given priority.
As described above, the priority order information stored in the priority order table 631 can be set differently for each time zone, and can be set differently according to the weather, season, and day of the week (weekdays, holidays). By setting the priority order table 631 in this way, the switch control unit 62 can change the priority order for supplying power to the load device according to the time zone, weather, season, and day of the week (weekdays, holidays). it can.

  And after starting PCS5, when supplying electric power from the solar power generation device 4 to the power supply routes P28 and N28 from the power supply routes P21 and N21, the switch control unit 62 determines the power supply capability and load of the solar power generation device 4. Based on the priority information of the devices L11 to L16, the supply of power is started in order from the load device with the highest priority. That is, the switch control unit 62 receives the notification of the power generation amount of the solar power generation device 4 from the PCS 5 and refers to the priority order table 631 so that power can be supplied in order from the load device L11 having a high necessity. Then, the open / close state of the switch unit 100 is controlled to set the power supply range in the power supply path.

  The selection of the load device that supplies power by setting the power supply range is based on the fact that the switch control unit 62 sets based on the information on the power generation amount of the solar power generation device 4 and the information on the priority table 631. However, in addition to this, it is also possible for the user to set a power supply range by the control panel 64 and select a load device that supplies power. A method for setting the power supply range by the control panel 64 will be described later.

  In addition, the storage battery 65 in the power supply device 6 is always charged from, for example, power supply paths P11 and N11 in a normal state in which power is supplied from the DC power supply device 3. Then, when the DC power supply 3 is out of power, the power storage device 7 cannot output power, and when the PCS 5 is activated, the storage battery 65 supplies an operating voltage that causes the PCS 5 to output power to the power supply device 6. Then, the operation of the power supply device 6 is started, and the operation voltage is supplied from the power supply device 6 to the PCS 5 to activate the PCS 5 independently. Instead of the storage battery 65, the PCS 5 may be activated independently using a fuel cell or an engine generator.

(PCS5 startup process procedure)
Next, the procedure of the startup process of the PCS 5 at the time of a power failure of the DC power supply system 1 will be described.
FIG. 6 is a flowchart illustrating the procedure of the startup process of the PCS 5 at the time of a power failure of the DC power supply system 1. In the flowchart shown in FIG. 6, when a power failure state occurs in which power cannot be supplied from the commercial power system PS to the DC power supply device 3, the PCS 5 temporarily stops operating, and the charge of the power storage device 7 is insufficient or depleted. This is an example in which the PCS 5 is restarted.

Hereinafter, with reference to the flowchart shown in FIG. 6, the procedure of the startup process of the PCS 5 in the DC power supply system 1 will be described.
First, it is assumed that a power outage state in which power cannot be supplied from the commercial power system PS to the DC power supply device 3 occurs.
When a power failure occurs in the commercial power system PS, the circuit breaker 2A in the power receiving facility 2 is opened by the operation of an undervoltage relay (not shown) in the protective relay 2D, and the auxiliary contact 2B of the circuit breaker 2A is opened. The power supply device 6 detects from the contact signal Aux that the auxiliary contact 2B of the circuit breaker 2A has been opened, and detects that a power failure has occurred in the commercial power system PS (step S100).

  Subsequently, the power supply device 6 controls the PCS 8 of the power storage device 7 to start discharging from the power storage device 7 toward the power feeding paths P11 and N11 (step S105), and temporarily stops the operation of the PCS 5 (step S105). Step S110). Further, the power supply device 6 opens the switch unit 101 (step S115). Thus, when the power supply device 6 detects that a power failure has occurred in the commercial power system PS, the power supply device 6 temporarily stops the operation of the PCS 5 and supplies power from the power storage device 7 to the power supply paths P11 and N11. Can do.

  Subsequently, the power supply device 6 determines whether or not the voltage of the power supply paths P11 and N11 that are power supply buses is reduced to a predetermined voltage value or less (for example, a value close to zero voltage) by the bus voltage detection unit 61A. It detects (step S120). That is, after the power storage device 7 starts discharging, has the DC voltage supplied from the power storage device 7 to the power supply paths P11 and N11 decreased to a predetermined voltage value or less due to insufficient or depleted charge of the power storage device 7? The power supply device 6 detects whether or not.

  And when it determines with the voltage of the electric power feeding path | routes P11 and N11 having fallen below the predetermined voltage value in the process of step S120 (step S120: Yes), the power supply device 6 will perform the process step of step S130. It shifts and it is determined whether the electric power which can be output from the solar power generation device 4 is electric power more than predetermined value (step S130). That is, it is determined whether or not the solar power generation device 4 is in a state where it can obtain a sunshine amount equal to or greater than a predetermined value and can supply power equal to or greater than the predetermined value from the PCS 5 to the power feeding path. This predetermined value can be set to an arbitrary value, for example, with the amount of power that can supply power to at least one load device as a lower limit value.

  Subsequently, in the process of step S130, when it is determined that the photovoltaic power generation apparatus 4 is in a state in which power can be output to the power feeding path (step S130: Yes), the power supply apparatus 6 proceeds to the process step of step S140. Then, the PCS activation unit 61 supplies the PCS 5 with an operating voltage that enables power to be output from the PCS 5 to activate the PCS 5 (step S140).

  Subsequently, the power supply device 6 causes the switch control unit 62 to turn on the switch unit 101 to output DC power from the PCS 5 to the power feeding paths P11 and N11 (step S150). Then, after executing the process of step S150, the power supply device 6 finishes the activation process of the PCS 5.

On the other hand, in the process of step S120, when it is determined that the voltages of the power supply paths P11 and N11 have not decreased below the predetermined voltage value (step S120: No), the power supply device 6 returns to the process of step S110. Then, the operation stop state of the PCS 5 and the open state of the switch unit 101 are continued.
Moreover, when it determines with the solar power generation device 4 not being in the state which can output electric power to an electric power feeding path in the process of step S130 (step S130: No), the power supply device 6 returns to the process of step S110, and PCS5 The operation stop state and the open state of the switch unit 101 are continued.

  As a result, in the DC power supply system 1, when a power failure state occurs in which power cannot be supplied from the commercial power system PS to the DC power supply device 3, the operation of the PCS 5 is temporarily stopped and the power storage device 7 is connected to the power supply paths P11 and N11. Electric power can be supplied. Thereafter, when the charge accumulated in the power storage device 7 is insufficient or depleted, the power supply device 6 can activate the PCS 5 to supply power from the solar power generation device 4 to the power feeding path.

In addition, after starting PCS5 by step S140, when the switch part 101 is turned on in step S150, if there is a possibility that excessively large current flows from the PCS5 toward the power supply paths P11 and N11, The switch unit 101 may be turned on, and then the output voltage of the PCS 5 may be raised. For example, after the switch unit 101 is turned on, the output voltage of the PCS 5 may be gradually raised to prevent a transient excessive current from flowing.
Furthermore, when the DC power supply 3 is out of power, the switch unit 101 is closed without being opened, thereby performing the opening process of the switch unit 101 in step S115 and the turning-on process of the switch unit 101 in step S150. Can be omitted (the same applies to FIGS. 7 and 8 to be described later).

(First Modification of Procedure of PCS 5 Startup Process)
FIG. 7 is a flowchart illustrating a first modification of the procedure of the PCS 5 activation process. The PCS 5 activation processing procedure shown in FIG. 7 differs from the PCS 5 activation processing procedure shown in FIG. 6 only in that the processing in step S120 shown in FIG. 6 is replaced with the processing in step S120A shown in FIG. The other processing is the same as the processing procedure shown in FIG. For this reason, the same code | symbol is attached | subjected to the step of the same processing content, and the overlapping description is abbreviate | omitted.

In the procedure of the start-up process shown in FIG. 7, when the protective relay 2D detects that a power failure state has occurred in the DC power supply system 1 in which power cannot be supplied from the commercial power system PS to the DC power supply device 3 (step S100), the power storage device 7 starts discharging, and DC power is supplied from the power storage device 7 to the power feeding paths P11 and N11 (step S105). At the same time, the power supply device 6 temporarily stops the operation of the PCS 5 (step S110). Further, the power supply device 6 opens the switch unit 101 (step S115).
Subsequently, the power supply device 6 determines whether the DC voltage of the power supply paths P11 and N11 is within a predetermined reference voltage range (for example, within ± 10% of the rated voltage) by the bus voltage detector 61A. (Step S120A).

When it is determined in step S120A that the DC voltages of the power supply paths P11 and N11 are within the predetermined reference voltage range (step S120A: Yes), the power supply device 6 proceeds to step S130. To do. And in the process of step S130, when it determines with it being in the state which can supply the electric power more than a predetermined value to the electric power feeding path from the solar power generation device 4 (step S130: Yes), the power supply device 6 will perform step S140. Shifting to processing, the PCS 5 is activated.
On the other hand, in the process of step S120A, when it is determined that the DC voltage of the power feeding paths P11 and N11 is not within the predetermined reference voltage range (step S120A: No), the power supply device 6 returns to the process of step S110, The operation stop state of the PCS 5 is continued.

That is, in the procedure of the startup process illustrated in FIG. 7, the PCS 5 is started in a state where a DC voltage is output from the power storage device 7 to the power feeding paths P11 and N11. When the PCS 5 detects and connects the DC voltage output from the power storage device 7 to the power supply paths P11 and N11, the PCS 5 converts the DC voltage output to the power supply paths P11 and N11 to the PCS8 of the power storage device 7. By making the voltage higher than the direct-current voltage output by a predetermined amount (for example, a voltage 1% to several% higher), the PCS 5 can be naturally linked to the power feeding paths P11 and N11.
Thereby, at the time of a power failure of DC power supply device 3, electric power can be supplied from power storage device 7 and solar power generation device 4 to power supply paths P11 and N11 in parallel.

(Second modified example of procedure of activation process of PCS 5)
6 and 7, the power supply device 6 has detected a signal (for example, a contact signal Aux) indicating a power failure state in which power cannot be supplied from the commercial power system PS to the DC power supply device 3. In this case, the example in which the operation of the PCS 5 is stopped has been described. However, the power supply device 6 detects that the voltages of the power supply paths P11 and N11 serving as power supply buses have decreased to a predetermined voltage value or less, for example, The operation of the PCS 5 may be stopped by detecting that the DC voltage of the paths P11 and N11 has a value close to zero voltage.

FIG. 8 is a flowchart showing a second modification of the procedure of the PCS 5 activation process.
Compared with the procedure of the PCS 5 activation process shown in FIG. 7, the procedure of the PCS 5 activation process shown in FIG. 8 omits the process of the step S105 from the procedure shown in FIG. 7, and the process of the steps S105A and S115A. The other processing is the same as the processing procedure shown in FIG. For this reason, the same code | symbol is attached | subjected to the step of the same processing content, and the overlapping description is abbreviate | omitted.

In the procedure of the start-up process shown in FIG. 8, when the protective relay 2D detects that a power failure state has occurred in the DC power supply system 1 in which power cannot be supplied from the commercial power system PS to the DC power supply device 3 (step S100), the circuit breaker 2A is opened, but at this time, DC power is not supplied from the power storage device 7 to the power feeding paths P11 and N11.
Subsequently, in the power supply device 6, the DC voltage of the power supply paths P <b> 11 and N <b> 11 that become power supply buses due to a power failure of the DC power supply device 3 is not more than a predetermined voltage value (for example, a value close to zero voltage) by the bus voltage detection unit 61 </ b> A. It is determined whether or not it has decreased (step S105A). When it is determined that the DC voltage of the power supply paths P11 and N11 has decreased to a predetermined voltage value or less (step S105A: Yes), the power supply device 6 temporarily stops the operation of the PCS 5 (step S110). ), The switch unit 101 is opened (step S115).
Subsequently, the power supply device 6 controls the PCS 8 to start supplying power from the power storage device 7 to the power feeding paths P11 and N11 (step S115A).

The subsequent processing procedure is the same as the processing procedure from step S120A to step S150 shown in FIG.
Thereby, at the time of a power failure of the DC power supply device 3, the power supply device 6 can detect the DC voltage of the power supply paths P <b> 11 and N <b> 11 serving as power supply buses and can stop the operation of the PCS 5. Note that the PCS 5 itself may detect that the voltages of the power feeding paths P11 and N11 have decreased, and the PCS 5 may stop the operation by itself.

(Description of the control panel 64)
Next, the control panel 64 will be described. The control panel 64 (setting input unit) detects an operation for setting the open / close state (on / off state) of the switch unit 100 and controls the switch control unit 62 according to the detected operation. Open / close status is displayed. The control panel 64 can be configured to include, for example, a touch panel display device.

  FIG. 9 is an explanatory diagram showing an example of the control panel 64. In the example shown in FIG. 9, a “single-line connection diagram display screen 641 of the DC power supply system 1”, a “switch selection button 642” indicating a position for detecting an operation, and a “push-in button 643” are displayed on a touch-panel display screen. ”And“ open button 644 ”are shown.

  In addition, in the “display screen 641 of the single-line connection diagram of the DC power supply system 1” shown in FIG. 9, all the load devices L11 to L16 in the DC power supply system 1 are displayed. You may make it select and display only the load apparatus which needs to supply electric power from the solar power generation device 4 at the time of the power failure of the power supply device 3. FIG.

  For example, on the display screen 641 of this single-line diagram, the state of the switch unit 100 is indicated by the color of the area surrounding the switch unit with a broken line. For example, “green” is displayed when the switch unit 100 is in the open state, and “red” is displayed when the switch unit 100 is in the closed state.

  For example, when the switch unit 111 in the open state indicated by “SW111” is turned on, the user operates the switch selection button 642, and then the broken line of the switch unit 111 on the display screen 641 of the single-line connection diagram. Manipulate the enclosed area. By operating the area indicating the switch unit 111, the control panel 64 starts blinking display of the area indicating the switch unit 111. By operating the input button 643 while the area indicating the switch unit 111 is blinking, the control panel 64 switches on the switch unit 111 via the switch control unit 62 according to the above-described series of operations. To close. Further, the control panel 64 changes the display color of the switch unit 111 from “green” to “red”.

  Further, when the switch unit 111 in the closed state is opened, the switch selection button 642 is operated, and thereafter, the region surrounded by the broken line of the switch unit 111 is operated on the display screen 641 of the single-line connection diagram. By operating the area indicating the switch unit 111, the control panel 64 starts blinking display of the switch unit 111. By operating the release button 644 while the area indicating the switch unit 111 is blinking, the control panel 64 opens the switch unit 111 via the switch control unit 62 according to the series of operations described above. Let Further, the control panel 64 changes the display color of the switch unit 111 from “red” to “green”. The same applies to other switch units 100.

  When the switch unit 100 is specified by operating the switch selection button 642, a plurality of switch units 100 can be specified at the same time, such as simultaneously specifying the switch unit 111 and the switch unit 112.

(Configuration of control circuit of switch part)
FIG. 10 is a configuration diagram illustrating a configuration example of a control circuit of the switch unit. As shown in FIG. 10, the switch unit 100 includes a switch control signal receiving unit 71, a switch opening / closing unit 72, an opening / closing result notification unit 73, a switch 74, and a power supply unit 75.

The switch control signal receiving unit 71 receives the switch control signal CNT from the switch control unit 62 in the power supply device 6.
Based on the switch control signal CNT received by the switch control signal receiving unit 71, the switch opening / closing unit 72 determines whether or not the switch opening / closing unit 72 is a switch designated by “switch identification information”. When the switch opening / closing unit 72 determines that the switch is the switch designated by the “switch identification information”, the switch opening / closing unit 72 turns on / off the switch 74 based on the “switch on / off information”. ) That is, the switch opening / closing unit 72 performs an opening / closing operation of the switch 74.

  When the switch 74 is turned on / off, the opening / closing result notifying unit 73 transmits information on the operation result of turning on / off the switch 74 to the switch control unit 62 of the power supply device 6. The switch control unit 62 that has received the operation result information displays the open / close state of the switch 74 on the control panel 64 based on the on / off operation result information of the switch 74 received from the open / close result notification unit 73. Let

The power supply unit 75 supplies power to each of the switch control signal receiving unit 71, the switch opening / closing unit 72, and the opening / closing result notification unit 73. The power supply unit 75 may store electric power that causes the switch control signal receiving unit 71, the switch opening / closing unit 72, and the opening / closing result notification unit 73 to function.
As a result, the user can instruct opening / closing of the switch 74 on the power supply path by the control panel 64 and can display and confirm the opening / closing result on the control panel 64.

(Power supply processing based on priority)
Next, the power supply process based on the priority order of the load devices in the DC power supply system will be described with reference to FIG.
FIG. 11 is a flowchart illustrating a procedure of power supply processing based on the priority order of load devices in the DC power supply system. FIG. 11 shows a process from a state in which the DC power supply device 3 is in a power failure state and power cannot be supplied from the power storage device 7.

  First, the PCS activation unit 61 supplies an operating voltage to the PCS 5 to activate the PCS 5 (step S210). Subsequently, the control panel 64 controls the switch control unit 62 to turn on the switch unit 101 (step S220).

Subsequently, the switch control unit 62 inputs priority order information for the load devices L11 to L16 from the priority order holding unit 63 (step S230).
Subsequently, the switch control unit 62 supplies power from the solar power generation device 4 based on the current power supply capability of the solar power generation device 4 and the priority order information for the load devices L11 to L16. The load device and its power supply path are determined (step S240).
Subsequently, the switch control unit 62 supplies the switch unit 100 with power that is determined to be supplied from the photovoltaic power generation device 4 in order from the load device having the first priority. The switch control signal CNT is transmitted, and the switch 74 in the switch unit 100 is turned on (step S250).
For example, when supplying power to the load device L11, the switch control unit 62 transmits a switch control signal CNT to the switch unit 111 so as to turn on the switch unit 111, and turns on the switch 74 in the switch unit 111. Further, for example, when supplying power to the load devices L11 and L12, the switch control unit 62 performs switch control on the switch unit 111 and the switch unit 112 so that the switch unit 111 and the switch unit 112 are sequentially turned on. The signal CNT is sequentially transmitted, and the switch unit 111 and the switch 74 in the switch unit 112 are sequentially turned on.

Subsequently, the switch unit 100 that has determined that the switch control signal CNT targets itself switches on its own switch 74 and notifies the switch control unit 62 of the result (step S260).
Subsequently, in response to the notification received from the switch unit 100, the switch control unit 62 causes the control panel 64 to display the open / closed state of the switch unit 100 included in the notification. The control panel 64 displays the open / closed state of the switch unit 100 on the display screen 641 of the control panel 64 (step S270). And after performing the process of this step S270, the power supply device 6 finishes this power supply process.
With the above power supply processing, the load device that supplies power from the solar power generation device 4 can supply power by setting the power supply range to which the load device is connected in order from the load device with the highest priority. it can.

(Power supply processing by the control panel 64)
FIG. 12 is a flowchart showing a procedure of power supply processing by the control panel 64 in the DC power supply system. In FIG. 12, the process from a state in which the DC power supply device 3 is in a power failure state, power cannot be supplied from the power storage device 7, and power is supplied from the solar power generation device 4 to the load device having a higher priority. Indicates.

First, the control panel 64 detects a user instruction, and detects that there is a load device that requires power supply in accordance with the detected instruction (step S310).
Subsequently, the control panel 64 controls the switch control unit 62 to turn on or open the switch unit 100 (more precisely, the switch 74 in the switch unit 100) corresponding to the detected operation (step S320).

Subsequently, the switch unit 100 that has determined that the switch control signal CNT is intended for itself switches the switch 74 on or off, and notifies the switch control unit 62 of the result (step S330).
Subsequently, in response to the notification received from the switch unit 100, the switch control unit 62 causes the control panel 64 to display the state of the switch unit 100 included in the notification. The control panel 64 displays the state of the switch unit 100 on the display screen 641 of the control panel 64 (step S340). After executing the process of step S340, the power supply device 6 ends this power supply process.

  As described above, the user instructs the switch unit 116 to open / close the power supply paths P11 and N11 to the power supply paths P28 and N28 on the control panel 64. It is possible to set the range of the power supply path to be supplied.

(Example of setting the priority of load devices for each area)
In the example of the DC power supply system 1 described above, the priority for each time zone for the load devices L11 to L16 is stored in the priority table 631 in advance, and the priority for each time zone stored in this priority table 631 is stored. Based on the information, a load device that supplies power from the solar power generation device 4 is determined. Other methods can be used for determining the priority order of the load devices.

For example, a priority table can be prepared for each area or room in a building such as a building. That is, a priority order may be determined in advance for each load device installed in each area or room, and power may be supplied from the solar power generation device 4 to the load device according to this priority order.
FIG. 13 is an explanatory diagram illustrating an example in which the priority order of load devices is set for each area. In the DC power supply system 1A shown in FIG. 13, the power supply path to which power is supplied from the DC power supply device 3 is shown by a single-line tangent diagram, and the main power supply path is connected to each load device in the two areas A1 and A2. In this example, power is supplied from P11 and N11.

  In FIG. 13, the first area A1 includes load devices L11 to L16 and switch units 111 to 116, and power is supplied from the power feeding paths P11 and N11 via the distribution board (PDF) 11. The second area A2 includes load devices L21 to L23 and switch units 121 to 123, and power is supplied from the power feeding paths P11 and N11 via the distribution board (PDF) 12. In addition, the structure of 1st area A1 is the same as the structure which consists of load apparatus L11 to L16 shown in FIG. 1, and switch part 111 to 116, and the overlapping description is abbreviate | omitted.

  In the second area A2, the power feeding paths P31 and N31 are branched from the power feeding paths P11 and N11 by the distribution board (PDF) 12. The power supply paths P11 and N11 are connected to the load device L21 through the switch unit 121, to the load device L22 through the switch unit 122, and to the load device L23 through the switch unit 123. The

In the DC power supply system 1A having the above configuration, for example, a priority order table 632 shown in FIG. 14 is used. In the priority order table 632, priorities are set for the load devices in the first area A1 and the second area A2.
In the example shown in FIG. 14, in the first area A1, the load device L11 (illumination device) has the first priority, the load device L13 (ventilation device) has the second priority, and the load device L12 ( Air conditioner) is set to the third highest priority.
In the second area A2, the load device L21 (illumination device) has the first priority, the load device L23 (ventilation device) has the second priority, and the load device L22 (air conditioner) has the third priority. Priority is set.
When power is supplied from the solar power generation device 4 to the load device during a power failure of the DC power supply device 3, the switch control unit 62 first loads the load device L11 having the first priority in the first area A1. The power supply range is set so that power is supplied to the (lighting device) and the first priority load device L21 (lighting device) in the second area A2.

And after starting supply of the electric power to the load apparatuses L11 and L21 of the 1st priority, when the power supply capability of the photovoltaic power generation apparatus 4 has the remaining capacity to supply electric power to the load apparatus L13 and the load apparatus L23 Next, power is supplied in the order of the load device L13 (ventilator) with the second priority in the first area A1 and the load device L23 (ventilator) with the second priority in the second area A2. Further, when the power supply capability of the solar power generation device 4 has enough power to supply power to the load device with the next priority, power is supplied to the load device with a lower priority.
Thus, the priority order for each of the load devices installed in each area in the building such as a building can be determined in advance, and power can be supplied to the load device according to this priority order.

(Example of setting the load device priority order based on human traffic)
In addition, the priority order of the load devices is determined based on the flow line (movement route) when the person moves in the event of a power failure of the DC power supply device 3 based on the flow line of the person. You can also. In this case, the power supply range set based on the flow line of the person may be displayed on the control panel 64.
FIG. 15 is an explanatory diagram illustrating an example of a flow line of a person at the time of a power failure of the solar power generation device. In FIG. 15, the configuration of the DC power supply system 1A is the same as that of the DC power supply system 1A shown in FIG. 13, and redundant description of the configuration of the DC power supply system 1A is omitted.

  As shown in FIG. 15, in the DC power supply system 1 </ b> A, a human flow line DL at the time of a power failure of the DC power supply device 3 is set in advance. And a high priority is given to the load apparatus of the range along this flow line DL. In the example shown in FIG. 15, the load devices installed near the flow line DL, that is, the load device L21 in the second area A2, the load device L11 in the first area A1, and the load device L13 in the first area A1. And give high priority to.

FIG. 16 is an explanatory diagram illustrating an example of a priority order table that is set in consideration of human traffic lines. In the priority order table 633 shown in FIG. 16, a high priority order is set for the load devices in the range along the flow line DL shown in FIG.
That is, the load device L21 (illumination device) in the second area A2 is set as the load device having the first priority in the traveling direction of the human flow line DL, and the load device L11 (illumination device) in the first area A1. Is the load device with the second highest priority, and the load device L13 (ventilator) in the first area A1 is the load device with the third highest priority.

When power is supplied to the load devices L21, L11, and L13 set in accordance with the human flow line DL, the control panel 64 displays that power is supplied to the load devices L21, L11, and L13. . For example, in FIG. 15, the regions of load devices L21, L11, and L13 (regions surrounded by solid lines) are displayed in red. The flow line DL is also displayed.
Thereby, in the event of a power failure of the DC power supply device 3, power can be supplied from the solar power generation device 4 with priority given to load devices such as lighting so that a person can move safely and without inconvenience. it can. Further, by displaying the flow line DL and the power supply status to the load device on the control panel 64, the user can confirm the range in which power is supplied.

[Second Embodiment]
In the first embodiment described above, an example is shown in which the priority order of load devices is set in the priority order table in advance, and the switch control unit 62 refers to the priority order table and selects a load device that supplies power. However, the priority order of the load devices can be dynamically set according to the movement route of the person in the building.
For example, when the user designates a starting point and a destination on the control panel 64, the power supply device 6 estimates a recommended person's travel route, and the load device in the range along the travel route is high. Give priority.

  That is, when determining the priority order of the load devices, the power supply device 6 allows the user to specify the starting point and the destination on the control panel 64, and when the user specifies the destination, A recommended moving route from the destination to the destination is displayed on the control panel 64. When the power supply device 6 supplies power from the solar power generation device 4 to the load device, the power supply device 6 preferentially supplies power to the load device installed in the range of the moving route and the range of the destination.

  For example, FIG. 17 is an explanatory diagram illustrating an example of a setting screen for a departure place and a destination. In the example shown in FIG. 17, a departure point setting unit 652, a destination setting unit 653, a route setting button 654, and a confirmation button 655 are arranged on the display screen 651.

  The departure place setting unit 652 is an operation unit for setting a departure place, and buttons for designating each departure place are arranged in the vertical direction. The destination setting unit 653 is an operation unit for setting a destination, and buttons for designating each destination are arranged in the vertical direction. The route setting button 654 is a button for starting processing for setting a departure place and a destination. The confirmation button 655 is a button for confirming the starting point and the destination selected by the user.

On the display screen 651, the user first operates the route setting button 654 first. By operating the route setting button 654, it is possible to set the departure point in the departure point setting unit 652 and to set the destination in the destination setting unit 653. In other words, the control panel 64 detects the operation of the route setting button 654, thereby performing the process of setting the departure point in the departure point setting unit 652 and the process of setting the destination in the destination setting unit 653.
For example, when the user operates the button “2F (second floor) area A21” in the departure place setting unit 652, the control panel 64 displays the enclosed portion of the “2F area A21” in green. Subsequently, when the user operates the “1F (first floor) lobby” button in the “destination setting unit 653”, the control panel 64 displays the enclosed portion of the “1F lobby” in green.
Then, by detecting the operation of the confirm button 655 by the user, the control panel 64 confirms “departure place” and “destination”. When the starting point and the destination are determined by the above-described series of operations, a process for estimating a recommended moving route from the information of the starting point and the destination is performed, and the control panel 64 displays the starting point and the destination. Display the recommended travel route display screen accordingly. For example, the control panel 64 displays the display screen 661 shown in FIG. 18 in a pop-up display.

FIG. 18 is an explanatory diagram showing an example of a moving route display screen, in which “2F area A21” is set as the departure point and “1F lobby” is set as the destination.
As shown in FIG. 18, a layout screen 662 of “2F area A21” serving as a departure place and a layout screen 663 of “1F lobby” serving as a destination are displayed on a display screen 661. Above, a recommended travel route R1 indicated by a broken line is displayed.
This travel route R1 indicates a recommended travel route when moving from the “2F area A21” serving as the departure point to the “1F lobby” serving as the “destination” at the time of a power failure of the DC power supply device 3. . More specifically, the moving route R1 starts from the entrance / exit 671 of “2F area A21”, moves along the dotted line shown in the drawing along the passage 673 in front of the elevator (EV) 672 of 2F, and reaches the staircase 674. , Then down stairs 674, down this stairs 674, through the 1F passage 675, and the route to “1F lobby 676” is shown.

The “return button 664” arranged below the display screen 661 is an operation button for returning from the display screen shown in FIG. 18 to the “departure and destination setting screen” 651 shown in FIG. . By operating the “return button 664”, the user can return to the “departure point / destination setting screen” 651 and set a new departure point and destination. Further, the “confirm button 665” confirms the moving route R1 by operating the “confirm button 665” when the user accepts the moving route R1 displayed in FIG. That is, the control panel 64 performs a process of confirming the estimated movement route R1 by detecting the operation of the “confirm button 665”.
The example illustrated in FIG. 18 is an example, and for example, a plurality of travel routes may be displayed so that the user can select a desired travel route from among the plurality of travel routes.

  Then, when the movement route R1 is set as shown in FIG. 18, a priority table 634 shown in FIG. 19 is generated and held in the priority holding unit 63. FIG. 19 is an explanatory diagram illustrating an example of a priority order table that is set in consideration of human flow. In the example shown in FIG. 19, along the movement route R <b> 1, the lighting device in the 2F passage 673 becomes the load device having the first priority, the lighting device in the staircase 674 becomes the second load device, and the 1F passage 675. This is an example in which the lighting device of No. 1 becomes the third load device, the lighting device of the 1F lobby 676 becomes the fourth load device, and the ventilation device of the 1F lobby 676 becomes the fifth load device.

  And when the switch control part 62 supplies electric power to the electric power feeding path from the solar power generation device 4, with reference to the priority table 634 shown in FIG. 19, electric power is supplied in an order from a load apparatus with a high priority. As described above, the open / close state of the switch unit 100 is controlled to set the power supply range in the power supply path.

FIG. 20 is a configuration diagram showing a configuration of a DC power supply system 1B according to the second embodiment of the present invention. 20 is different from the DC power supply system 1 shown in FIG. 1 only in the configuration of the power supply device 6A.
The power supply device 6A shown in FIG. 20 is different from the power supply device 6 shown in FIG. 3 in that a recommended route setting unit 66 is newly added. The other configuration is the same as the power supply device shown in FIG. The same as 6. For this reason, the same code | symbol is attached | subjected to the same component and the overlapping description is abbreviate | omitted.

The recommended route setting unit 66 includes a building database (building DB) 66A in which information about a building in which the DC power supply system 1 is installed is recorded. The building database 66A holds information such as layout information of the building, power supply facility information, load device information, and power supply path system information. The layout information of the building may be, for example, CAD information of the building.
When the departure point and the destination are set on the “departure point and destination setting screen” shown in FIG. 17, the recommended route setting unit 66 refers to the building database 66 </ b> A to determine the destination to the destination. The recommended travel route R1 to the position of is estimated. The recommended route setting unit 66 displays the recommended travel route R1 on the control panel 64.

Further, the recommended route setting unit 66 determines the load devices existing within a predetermined distance range from the travel route R1 along the recommended travel route R1 with reference to the building database 66A, and the information on the load devices is prioritized. It is stored in the holding unit 63. Based on the information on the load device notified by the recommended route setting unit 66, the priority order holding unit 63 sets and holds a priority order for this load device. And the switch control part 62 sets the electric power feeding range which supplies electric power from the solar power generation device 4 to a load apparatus based on the priority order information of the load apparatus set according to the movement route R1.
As described above, in the DC power supply system 1B according to the second embodiment, the user performs an operation of designating the starting point and the destination on the control panel 64, thereby displaying the recommended moving route R1 on the control panel 64. be able to. Further, power can be preferentially supplied to the range determined along the movement route R1 and the load device at the destination.

[Third Embodiment]
In the first embodiment and the second embodiment, the example of the DC power supply system that supplies DC power to the load device connected to the power supply path has been described. However, AC power supply that supplies AC (for example, AC 400 V) to the load device is described. It may be a system.
FIG. 21 is a configuration diagram showing a schematic configuration of an AC power feeding system 1C according to the third embodiment of the present invention. Compared with the DC power supply system 1 shown in FIG. 1, the AC power supply system 1C shown in FIG. 21 omits the DC power supply device 3 shown in FIG. 1, and replaces the PCS (power conditioner) 5 with a PCS 5A that outputs an AC voltage. The point that the PCS 8 is replaced with the PCS 8A that outputs an alternating voltage is different in configuration.
Also, the DC voltage feed paths P11 and N11 shown in FIG. 1 are replaced with a three-phase AC voltage feed path ACL11, and the feed paths P21 and N21 to P28 and N28 are replaced with a three-phase or single-phase feed path ACL21 to ACL28. Different points. Further, in FIG. 21, switch units 101 to 116 are semiconductor switches having a function of conducting and blocking AC current, and load devices L11 to L16 are load devices having a three-phase or single-phase AC voltage as input. is there.

  In the AC power supply system 1C having the above-described configuration, the high-voltage AC voltage (for example, 3-phase AC 6600V) supplied from the commercial power system PS is stepped down to a predetermined low-voltage AC voltage (for example, 3-phase AC 400V) by the transformer 2C. The AC voltage is output to the power supply path ACL11 which is the main power supply line.

The solar power generation device 4 is connected to the power supply path ACL11 via a power conditioner (PCS) 5A and a switch unit 101. In addition, a power storage device (BATT) 7 including a storage battery is connected to the power supply path ACL11 via the PCS 8A and the switch unit 102. The PCS 5A of the solar power generation device 4 and the PCS 8A of the power storage device 7 include a power conversion device such as a DC / AC converter (inverter) and a PCS transformer that boosts (or steps down) alternating current to a predetermined voltage.
The control operation in the AC power supply system 1C is different only in that the DC voltage in the DC power supply system 1 is replaced with an AC voltage. The basic operations of the power supply device 6, the PCS 5A, the switch unit 100, and the like are the same as the operations in the DC power supply system 1 shown in FIG.

That is, at the time of a power failure of the commercial power system PS, the power supply device 6 supplies a reference AC operating voltage to the PCS 5A to activate the PCS 5A independently. Further, the power supply device 6 sets the open / close state of the switch units 111 to 116, and sets the power supply range in the power supply paths ACL21 to ACL28.
In addition, about a detailed structure and control operation | movement, since it is the same as that of the case of the DC power supply system 1, the overlapping description is abbreviate | omitted.
Thereby, in the AC power feeding system 1C, when power is supplied from the solar power generation device to the power feeding path, power can be supplied in order from the load device having the highest necessity.

  The DC power supply system 1, the DC power supply system 1A, the DC power supply system 1B of the second embodiment, and the AC power supply system 1C of the third embodiment have been described above. The described DC power supply system 1, DC power supply system 1A, DC power supply system 1B, and AC power supply system 1C are equipped with the power storage device 7 as a backup power supply device. However, the present invention can be suitably applied even when the power storage device 7 is not installed. When this power storage device 7 is not provided, for example, in the DC power supply system 1, when the DC power supply device 3 is in a power failure state and power is not supplied to the power supply paths P11 and N11, the power supply device 6 immediately turns off the PCS5. It is activated or is activated by a user instruction. The same applies to the AC power feeding system 1C.

  In the above embodiment, the function of each processing unit in the power supply devices 6 and 6A may be realized by dedicated hardware, and a program for realizing the function of each processing unit is provided. The program may be recorded on a computer-readable recording medium, and a program recorded on the recording medium may be read into a computer system and executed to implement the function.

  That is, the power supply devices 6 and 6A have a computer system inside. A series of processes related to the above-described process is stored in a computer-readable recording medium in the form of a program, and the above-described process is performed by the computer reading and executing this program. Here, the computer-readable recording medium refers to a magnetic disk, a magneto-optical disk, a CD-ROM, a DVD-ROM, a semiconductor memory, and the like. Alternatively, the computer program may be distributed to the computer via a communication line, and the computer that has received the distribution may execute the program. The “computer system” here includes an OS and hardware such as peripheral devices.

Here, the correspondence between the present invention and the above-described embodiment will be supplementarily described. The power supply system according to the present invention corresponds to the DC power supply system 1, the DC power supply system 1A, the DC power supply system 1B, or the AC power supply system 1C. The power supply apparatus according to the present invention is, for example, a DC power supply apparatus in the DC power supply system 1 or the like. 3 corresponds to the power receiving system 2 in the AC power feeding system 1C. The power supply control device in the present invention corresponds to the power supply device 6 or the power supply device 6A, and the switch unit in the present invention corresponds to the switch unit 100.
Moreover, the power conditioner (PCS) 5 or the power conditioner (PCS) 5A corresponds to the power conditioner in the present invention. Further, the power conditioner starting unit in the present invention corresponds to the PCS starting unit 61, and the switch control unit in the present invention corresponds to the switch control unit 62. Further, the priority holding unit in the present invention corresponds to the priority holding unit 63, and the recommended route setting unit in the present invention corresponds to the recommended route setting unit 66. In addition, the control panel 64 corresponds to the display unit and the setting input unit in the present invention.

  (1) In the above embodiment, the DC power supply system 1 (power supply system) includes a plurality of load devices L11 to L16 connected to the power supply path of the DC power supply device 3 (power supply device) that outputs a voltage (for example, DC 380 V). In addition, power is supplied from the DC power supply device 3 to the power supply path via the PCS 5 (power conditioner), and power is supplied from the solar power generation device 4 to the power supply path. A power supply system that supplies power, wherein a switch unit 100 is arranged at a location that divides a power supply range that supplies power from the solar power generation device 4 and a non-power supply range that does not supply power in a power supply path, and a switch unit The switch control unit 62 that controls the open / closed state of 100 and sets the power supply range in the power supply path, and power from the photovoltaic power generation device 4 to the load device A priority holding unit 63 that holds priority information indicating the priority of supply, and the switch control unit 62 sets the power supply range and the amount of power that can be supplied by the solar power generation device 4 and the priority. Based on this information, a power supply range for supplying power to the load device is set.

Thus, in the DC power supply system 1 (power supply system) of the present embodiment, the power supply path that supplies power from the solar power generation device 4 to the load devices L11 to L16 during a power failure of the DC power supply device 3 (power supply device). The switch unit 100 is disposed at a location where the power supply range for supplying power from the solar power generation device 4 and the non-power supply range for not supplying power are divided. When the switch control unit 62 sets a power supply range for supplying power from the solar power generation device 4, the load amount L11 held in the priority holding unit 63 and the amount of power that can be supplied by the solar power generation device 4. To the power supply range for supplying power to the load device based on the priority order information for L16.
Thereby, in the DC power supply system 1 (power supply system), when power is supplied from the solar power generation device 4 to the load device, power can be preferentially supplied to the load device that needs to be supplied with power.

(2) Moreover, in the said embodiment, when setting the electric power feeding range, the switch control part 62 is a load with high priority based on the electric energy which the solar power generation device 4 can supply, and the said priority information. Power supply is started in order from the device.
As a result, when the DC power supply system 1 (power supply system) supplies power from the solar power generation device 4 to the load device in the event of a power failure of the DC power supply device 3 (power supply device), the load devices in descending order of necessity are provided. Power supply can be started.

(3) Moreover, in the said embodiment, a priority is set according to either or both of the classification of a load apparatus, and the position where the said load apparatus is installed.
Thus, in the DC power supply system 1 (power supply system), when power is supplied from the solar power generation device 4 to the power supply path at the time of a power failure of the DC power supply device 3 (power supply device), the type of load device and the load The load device that supplies power can be selected according to the position where the device is installed. For example, the lighting device can be preferentially selected as the type of the load device, and the load device in the range of the person's movement route can be preferentially selected as the position of the load device.

(4) In the above embodiment, the priority order is set according to any or all of the time zone, day of the week, weather, and season.
Thereby, in the DC power supply system 1 (power supply system), when the power generation amount of the solar power generation device 4 changes according to the time zone, the weather, and the season, the solar power generation device according to the change in the power generation amount. The priority order of the load devices that supply power from 4 can be set. Further, for example, the priority order of the load devices can be set depending on whether the employee is on a weekday or a holiday.

(5) Moreover, in the said embodiment, a priority is set according to the movement route of the person at the time of a power failure which cannot supply electric power from the direct current power supply device 3 (power supply device) to a feeding path.
For example, as shown in FIG. 15, in the DC power supply system 1 </ b> A (power supply system), the priority order of the load devices is considered in consideration of the flow line DL when a person moves during a power failure of the DC power supply device 3 (power supply device). The priority order of the load devices is determined based on the flow line of the person. For example, the flow line DL of a person at the time of a power failure of the DC power supply device 3 is set in advance, and a high priority is given to the range determined along the flow line DL and the load device at the destination.
As a result, in the event of a power failure of the DC power supply device 3 (power supply device), priority is given to load devices such as lighting so that people can move safely and without inconvenience, and power is supplied from the solar power generation device 4. Can be supplied.

(6) Moreover, in the said embodiment, the control panel 64 (display part) which displays the electric power feeding range in an electric power feeding path is provided, and the control panel 64 presents an electric power feeding range.
Thus, in the DC power supply system 1 (power supply system), when the power supply range supplied from the solar power generation device 4 is set, the power supply range is displayed on the control panel 64 (display unit) and presented to the user.
Thereby, at the time of a power failure of the DC power supply device 3 (power supply device), the user can check the power supply range to which power is supplied by looking at the control panel 64 (display unit).

  (7) In the above embodiment, for example, in a building where the DC power supply system 1B (power supply system) shown in FIG. 20 is installed, the departure place and the purpose when the person moves from the departure place to the destination. A control panel 64 (setting input unit) for detecting a setting input for designating a place, outputting information indicating the detected starting point and destination, and displaying a moving route between the starting point and the destination; Recommended route setting for setting a recommended travel route R1 from the departure location to the destination and displaying the travel route R1 on the control panel 64 when designation of the departure location and destination is detected on the control panel 64 The priority order holding unit 63 sets and holds the priority order of the load devices according to the travel route R1 recommended by the recommended route setting unit 66. And switch control unit 62, based on the priority of the set load device in accordance with the movement route, setting a feeding range for supplying power to the load device from the photovoltaic device 4.

In this way, in the building where the DC power supply system 1B (power supply system) is installed, the recommended route setting unit 66 is specified by the user specifying the starting point and destination using the control panel 64 (setting input unit). With reference to the building database 66A, a recommended travel route R1 from the departure point to the destination is estimated, and this travel route R1 is displayed on the control panel 64.
In addition, the recommended route setting unit 66 takes out the range determined along the recommended travel route R1 and the load device information existing at the destination from the building database 66A, and stores the load device information in the priority order holding unit 63. Notice. Based on the information on the load device notified by the recommended route setting unit 66, the priority order holding unit 63 sets and holds a priority order for this load device. And the switch control part 62 sets the electric power feeding range which supplies electric power from the solar power generation device 4 to a load apparatus based on the priority order information of the load apparatus set according to the movement route R1.
Thereby, the user can display the recommended travel route R1 on the control panel 64 by designating the departure point and the destination on the control panel 64 (setting input unit). In addition, the switch control unit 62 can set a power supply range so that power is preferentially supplied to a range determined along the travel route R1 and a load device at the destination.

  As mentioned above, although embodiment of this invention was described, the electric power feeding system of this invention is not limited only to the above-mentioned example of illustration, A various change can be added in the range which does not deviate from the summary of this invention. Of course.

For example, in the DC power supply system 1 shown in FIG. 1, the DC power supply system 1A shown in FIG. 13, the DC power supply system 1B shown in FIG. 20, and the AC power supply system 1C shown in FIG. Although an example in which the device 4 and the power storage device 7 are installed is shown, the present invention can be suitably applied even when a fuel cell, an engine generator, or the like is further installed as a power source for backup.
Further, the example of opening and closing the switch unit 100 using the control panel 64 shown in FIG. 9 is an example, and other control methods for specifying and opening the switch unit 100 on the power supply path are shown. May be used.

1, 1A, 1B ... DC power supply system (power supply system),
1C: AC power feeding system (power feeding system), 2 ... Power receiving equipment, 2A: Circuit breaker,
2C ... transformer, 2D ... protective relay, 3 ... DC power supply (REC),
4 ... Solar power generation device (PV), 5, 5A ... Power conditioner (PCS),
6, 6A ... power supply device (power supply control device), 7 ... power storage device (BATT),
11, 12 ... distribution board (PDF), 51 ... power generation amount control unit,
52 ... Grid interconnection control unit, 53 ... DC / DC converter,
61 ... PCS start-up unit, 61A ... bus voltage detection unit, 62 ... switch control unit,
63 ... priority order holding unit, 631, 632, 633, 634 ... priority order table,
64... Control panel (display unit, setting input unit),
641... Single-line diagram display screen, 642.
643 ... Input button, 644 ... Release button,
65 ... Storage battery, 66 ... Recommended route setting section, 66A ... Building database,
71 ... Switch control signal receiving unit, 72 ... Switch opening / closing unit,
73... Open / close result notification unit, 74... Switch, 75.
100, 101-116, 121-123 ... switch part,
L11 to L16, L21 to L23... Load device,
ACL11, ACL21-ACL28 ... Feed path P11, P21-P28, N11, N21-N28 ... Feed path

Claims (13)

Power is supplied from the power supply device to the plurality of load devices connected to the power supply path of the power supply device that outputs the voltage via the power supply route, and the solar power generation device is connected to the power supply route via the power conditioner A power supply system for supplying power from the solar power generation device to the power supply path,
In the power supply path, a switch unit disposed at a location that divides a power supply range that supplies power from the solar power generation device and a non-power supply range that does not supply the power;
A switch control unit that controls an open / close state of the switch unit to set a power supply range in the power supply path;
A priority storage unit that stores priority information indicating a priority for supplying power from the solar power generation device to the load device;
With
The switch control unit
When the power supply range is set, a power supply range for supplying power to the load device is set based on the amount of power that can be supplied by the solar power generation device and the priority information. . The switch control unit
When setting the power supply range, based on the amount of power that can be supplied by the photovoltaic power generation device and the priority information, the power supply range is started so that power supply is started in order from the load device with the highest priority. The power feeding system according to claim 1, wherein: The priority is
The power supply system according to claim 1, wherein the power supply system is set according to either or both of a type of the load device and a position where the load device is installed. The power supply system according to claim 3, wherein the priority is set according to any or all of a time zone, a day of the week, weather, and a season. The priority is
The power supply system according to claim 1 or 2, wherein the power supply system is set according to a movement route of a person at the time of a power failure in which power cannot be supplied from the power supply device to the power supply path. A display unit for displaying a power supply range in the power supply path;
The display unit
The power supply system according to any one of claims 1 to 5, wherein the power supply range is presented. Detects a setting input for designating the starting point and destination when a person moves from the starting point to the destination, outputs information indicating the detected starting point and destination, and sets the starting point and destination A setting input section that displays the travel route between
When designation of the starting point and destination is detected in the setting input unit, a recommended moving route from the starting point to the destination is set, and the moving route is displayed on the setting input unit. Recommended route setting part,
With
The priority holding unit
In accordance with the travel route recommended by the recommended route setting unit, the priority order of the load device is set and held,
The switch control unit
The power supply range in which electric power is supplied from the solar power generation device to the load device is set based on the priority order of the load device set according to the travel route. The power feeding system according to any one of the above. A power supply device including the switch control unit and the priority order holding unit;
The power supply device
The operation voltage that enables the power conditioner in the stopped state in which the output is stopped to output electric power from the power conditioner is supplied. 8. Power supply system. The switch part is
A switch control signal receiver for receiving a switch control signal from the power supply device;
Based on the switch control signal received by the switch control signal receiving unit, a switch opening and closing unit for opening and closing the switch unit,
The power feeding system according to claim 8, further comprising: The switch part is
The power feeding system according to claim 1, comprising a semiconductor switching element for connecting and blocking the power feeding path. Power is supplied from the power supply device to the plurality of load devices connected to the power supply path of the power supply device that outputs the voltage via the power supply route, and the solar power generation device is connected to the power supply route via the power conditioner A power supply control device in a power supply system for supplying power from the solar power generation device to the power supply path,
Controls the open / closed state of the switch unit disposed in the power supply path and dividing the power supply range that supplies power from the photovoltaic power generation device and the non-power supply range that does not supply power A switch control unit for setting a power supply range in the power supply path,
A priority storage unit that stores priority information indicating a priority for supplying power from the solar power generation device to the load device;
With
The switch control unit
When setting the power supply range, a power supply range for supplying power to the load device is set based on the amount of power that can be supplied by the solar power generation device and the priority information. apparatus. Power is supplied from the power supply device to the plurality of load devices connected to the power supply path of the power supply device that outputs the voltage via the power supply route, and the solar power generation device is connected to the power supply route via the power conditioner A power supply control method in a power supply system for supplying power from the solar power generation device to the power supply path,
In the power supply path, a step of arranging a switch unit at a location that divides a power supply range that supplies power from the photovoltaic power generation apparatus and a non-power supply range that does not supply the power; and
A switch control step for controlling an open / closed state of the switch unit and setting a power supply range in the power supply path;
A priority holding step for holding priority information indicating a priority for supplying power from the solar power generation device to the load device;
Including
Furthermore, the switch control step includes
When setting the power supply range,
The power supply control method characterized by including the step which sets the electric power feeding range which supplies electric power to the said load apparatus based on the electric energy which the said photovoltaic power generation device can supply, and the information of the said priority. Power is supplied from the power supply device to the plurality of load devices connected to the power supply path of the power supply device that outputs the voltage via the power supply route, and the solar power generation device is connected to the power supply route via the power conditioner A power supply system for supplying power from the solar power generation device to the power supply path,
In the power supply path, a switch unit disposed at a location that divides a power supply range that supplies power from the solar power generation device and a non-power supply range that does not supply the power;
A switch control unit that controls an open / close state of the switch unit to set a power supply range in the power supply path;
A priority storage unit that stores priority information indicating a priority for supplying power from the solar power generation device to the load device;
A computer in the power supply system comprising:
When setting the power supply range,
The program for performing the step which sets the electric power feeding range which supplies electric power to the said load apparatus based on the electric energy which the said photovoltaic power generation device can supply, and the information of the said priority.

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