JP6253416B2 - Power supply system - Google Patents

Description

  The present invention relates to a power supply system that supplies electric power to a house.

  As a power source used in a house, a technology using a power source such as a storage battery other than a system power source has begun to spread. As an example of a technology that uses a power source other than the system power source, a technology that uses a storage battery mounted on a hybrid vehicle or an electric vehicle as an external power source, or a technology that uses a generator or other battery as an external power source is known. ing.

  For example, Patent Document 1 includes a charger / discharger connected to a power line for supplying external system power to a household load on the house side, and a main controller that performs overall control. In a power management system capable of mutually transmitting power between a battery mounted on an automobile and a house side, a battery controller that monitors the state of the battery and manages charge / discharge, and detects the connection between the charger / discharger and the battery And a secured power amount determining means for obtaining a secured power amount of the battery corresponding to normal use of the electric vehicle, and when the main controller supplies power from the battery to the house side, at least system power Has been proposed, a power management system that limits the amount of supplied power to the amount obtained by subtracting the reserved power amount from the remaining capacity of the battery has been proposed.

JP 2001-8380 A

  However, in the technique described in Patent Document 1, the connection of the cable is detected. However, when power is supplied from an external power source to the house in an emergency, not only the cable connection but also the system power source to the external power source is used. Switching operations are required, but the necessary operations cannot be completed unless you are used to them. If necessary operations cannot be completed, there may be room for improvement because it may not be possible to properly supply power to the house from an external power source.

  The present invention has been made in view of the above-described facts, and an object of the present invention is to enable reliable power feeding from an external power source to a house.

In order to achieve the above object, a power feeding system according to claim 1 is configured to receive power from an external power source, start energization according to an instruction from the outside, and receive power, and the external power source and the power receiving unit. Connection detecting means for detecting a connection state, state detecting means for detecting a state of a switching means for switching a power supply source to a house to a system power supply or the external power supply, the external power supply, and the power receiving means are connected. Is detected by the connection detecting means, and when the state detecting means detects that the state of the switching means is normal, the power receiving means is energized to supply power from the external power source. to start, and control means for controlling the power receiving means, and power failure detecting means for detecting a power failure condition, when the power failure condition is detected by said power failure detecting means, to supply to the housing Display means for displaying the switching procedure for switching the power supply to the external power source, wherein the display means, sequentially switching the switching procedure on the basis of each of the detection result of the connection detecting means and said state detecting means To display .

  According to the first aspect of the present invention, the power receiving means receives power from the external power source. Further, the power receiving means can start energization according to an instruction from the outside.

  The connection detecting means detects the connection state between the external power supply and the power receiving means, and the state detecting means detects the state of the switching means for switching the power supply source to the house to the system power supply or the external power supply.

  In the control means, when the connection detecting means detects that the external power source and the power receiving means are connected, and the state detecting means detects that the state of the switching means is normal, the control means The power receiving means is controlled to start energization and start power supply from the external power source.

  That is, since it is confirmed that the connection between the external power supply and the power receiving means and the switching means are normal, the power supply from the external power supply is started, so that it is possible to reliably supply power to the house from the outside.

According to a second aspect of the present invention, there is provided power receiving means for receiving power from an external power source that starts energization according to an instruction from the outside, connection detection means for detecting a connection state between the external power source and the power receiving means, and a house The state detecting means for detecting the state of the switching means for switching the power supply source to the system power supply or the external power supply, the connection detecting means detecting that the external power supply and the power receiving means are connected, and the Control means for controlling the external power supply so as to start power supply from the external power supply when the state detection means detects that the state of the switching means is normal, and a power failure for detecting a power failure state And a display means for displaying a switching procedure for switching a power supply source to be supplied to a house to the external power source when a power failure state is detected by the power failure detection means. Wherein the display means displays sequentially switches the switching procedure on the basis of each of the detection result of the connection detecting means and said state detecting means.

  According to the invention described in claim 2, the power receiving means receives power from the external power source. As the external power source, one that can start energization by an external instruction is applied.

  The connection detecting means detects the connection state between the external power supply and the power receiving means, and the state detecting means detects the state of the switching means for switching the power supply source to the house to the system power supply or the external power supply.

  In the control means, when the connection detecting means detects that the external power supply and the power receiving means are connected, and the state detecting means detects that the state of the switching means is normal, the control means The external power supply is controlled so as to start the power supply.

  That is, since it is confirmed that the connection between the external power supply and the power receiving means and the switching means are normal, the power supply from the external power supply is started, so that it is possible to reliably supply power to the house from the outside.

According to a third aspect of the present invention, there is provided power receiving means for receiving power from an external power source that starts energization according to an instruction from the outside, connection detection means for detecting a connection state between the external power source and the power receiving means, and a house The connection detecting means connects the switching means for switching the power supply source to the system power supply or the external power supply, the state detecting means for detecting the state of the switching means, and the external power supply and the power receiving means. When the state detecting means detects that the state of the switching means is detected, the external power source is controlled to start power supply from the external power source, and power to the house and a control means for a source for controlling said switching means to switch to the external power supply, a power failure detection means for detecting a power outage, the power outage by the power failure detection means detection of If it is, display means for displaying the switching procedure for switching the source of power supplied to homes to the external power source, wherein the display means, each of the detection result of the connection detection means and said state detecting means Based on the above, the switching procedure is sequentially switched and displayed .

  According to the third aspect of the present invention, the power receiving means receives power from the external power source. As the external power source, one that can start energization by an external instruction is applied.

  The connection detecting means detects a connection state between the external power source and the power receiving means. Further, the power supply source to the house is switched to the system power source or the external power source by the switching means. Further, the state detecting means detects the state of the switching means.

  In the control means, when the connection detecting means detects that the external power source and the power receiving means are connected, and the state detecting means detects that the state of the switching means is normal, the control means The external power source is controlled to start the power supply, and the switching means is controlled to switch the power supply source to the house to the external power source.

  That is, since it is confirmed that the connection between the external power source and the power receiving means is completed and the switching means is normal, energization from the external power source is started and switching to the external power source is performed by the switching means. Can reliably supply power to the house.

Further, each of the above inventions displays a power failure detection means for detecting a power failure state, and a switching procedure for switching the power supply source to be supplied to the house to an external power source when the power failure state is detected by the power failure detection means. and means, further Ru comprising a. Thereby, the displayed switching procedure can be confirmed. The display means that displays by sequentially switching the switching procedure on the basis of the respective detection results of the connection detecting means and the state detecting means. Alternatively, all the switching procedures may be displayed collectively.

In addition , as in the invention described in claim 4 , the power failure detection means for detecting a power failure state and a power recovery state representing recovery from the power failure state is further provided, and the control is performed when the power failure state is detected by the power failure detection means. Control by the means may be started, and when the power recovery state is detected by the power failure detection means, the control means may further control the power reception means so as to stop energization of the power reception means.

Further, as in the invention described in claim 5 , further comprising a power failure detection means for detecting a power failure state and a power recovery state representing recovery from the power failure state, and the control is performed when the power failure state is detected by the power failure detection means. The control by the means may be started, and when the power recovery state is detected by the power failure detection means, the control means may further control the external power supply so as to stop the power supply from the external power supply.

Further, as in the invention described in claim 6 , the power failure detection means for detecting the power failure state and the power recovery state representing the recovery from the power failure state is further provided, and the control is performed when the power failure state is detected by the power failure detection means. When the power failure detection means detects the power recovery state, the control means further controls the switching means to switch the power supply source to the house to the grid power supply, You may make it further control an external power supply so that the electric power supply from an external power supply may be stopped.

  As described above, according to the present invention, there is an effect that power can be reliably supplied from an external power source to a house.

It is a block diagram which shows schematic structure of the electric power feeding system concerning 1st Embodiment. It is a flowchart which shows an example of the flow of the process performed by HEMS in the electric power feeding system which concerns on 1st Embodiment. It is a figure which shows the example of a display to HEMS. It is a flowchart which shows the flow of an example of the recovery process performed by HEMS in the electric power feeding system which concerns on 1st Embodiment. It is a block diagram which shows schematic structure of the electric power feeding system which concerns on 2nd Embodiment of this invention. It is a flowchart which shows an example of the flow of the process performed by HEMS in the electric power feeding system which concerns on 2nd Embodiment of this invention. It is a figure which shows the other example of a display to HEMS. It is a flowchart which shows the flow of an example of the recovery process in the electric power feeding system which concerns on 2nd Embodiment. It is a flowchart which shows an example of the flow of the process performed by HEMS in the electric power feeding system which concerns on 3rd Embodiment of this invention. It is a flowchart which shows the flow of an example of the recovery process in the electric power feeding system which concerns on 3rd Embodiment.

  Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings.

(First embodiment)

  FIG. 1 is a block diagram illustrating a schematic configuration of a power feeding system according to the first embodiment.

  A power supply system 10 according to the first embodiment is a power distribution system that supplies power supplied from a home energy management system (HEMS) 12 that manages energy used in a house, a system power supply 14 and the like to each room in the house. A panel 16, an external power supply connector 20 for connecting an external power supply 18 other than the system power supply 14, and a switching opening / closing board 24 for switching the power supply for supplying power to each room of the house such as the living room 22 are provided.

  HEMS12 is provided with the function to manage the energy (especially electric power) used in a house while being provided with the operation part and the display part. Specifically, it has a function of monitoring and displaying the power consumption of each room and the power generation state and usage status of various power generation devices such as a solar power generation device and a fuel cell (not shown). The HEMS 12 basically has a general computer configuration. That is, although not shown in the figure, a CPU, a ROM, a RAM, an input / output port, and the like are provided, and each is connected to a bus such as a system bus or a data bus. An operation unit, a display unit, a memory, and the like are connected to the input / output port, and external devices such as a power failure detector 26 and an external power supply connector 20 described later can be connected. The operation unit may be a touch panel integrated with the display unit, may be provided with a mechanical switch or the like separately from the display unit, or both the touch panel and the mechanical switch. You may make it provide. A touch switch may be applied instead of the mechanical switch.

  A system power supply 14 is connected to the distribution board 16, and power supplied from the system power supply 14 is supplied to each room of the house such as the living room 22 via the switching opening / closing board 24.

  In addition, the distribution board 16 is provided with a power failure detector 26. The power failure detector 26 receives information from the distribution board 16 (for example, information such as a power failure of the system power supply 14 or breaker interruption (trip) due to overcurrent) and information from the switching switch 24. The The power failure detector 26 detects the power interruption including the power failure based on the input information and also detects the cause of the power interruption. Moreover, the power failure detector 26 is connected to the HEMS 12 and outputs the detection result of the power failure detector 26 to the HEMS 12. The power failure detector 26 is connected to a battery 28 in order to be able to detect the presence or absence of a power failure even if the power is shut off due to a power failure or breaker breakage. Has been.

  The switching open / close panel 24 is provided with an earth leakage breaker 30, and a power source for supplying power to each room of the house such as the living room 22 is supplied from the distribution board 16 and the system power source 14 and the external power source connector 20. The switch part 32 which switches to the external power supply 18 connected to is provided. In the first embodiment, the switch unit 32 is described as being manually switched. However, the switch unit 32 may be configured to be switchable by an instruction from the HEMS 12 or the like.

  The earth leakage breaker 30 has a function of detecting the switching state of the switch unit 32 (whether the power source is the system power source 14 or the external power source 18) and outputting the detection result to the power failure detection unit 26 of the distribution board 16. ing. It should be noted that the detection of the switching state of the switch unit 32 and the output of the detection result to the power failure detection unit 26 may be performed using the power of the battery 28 in order to enable even when the power is shut off. May be provided.

  The external power supply connector 20 is connected to the switch unit 32 via the leakage breaker 30 of the switching switch 24. The external power supply connector 20 can be connected to an external power supply 18 via a cable 34. The external power supply connector 20 receives power from the connected external power supply 18, and each house in the living room 22 or the like via the switch unit 32. It can be supplied to the room. Further, the external power connector 20 is provided with an energization switch 20A that can be controlled from the outside. By controlling the energization switch 20A from the outside, energization to the switching open / close panel 24 of power received from the external power source 18 is performed. And can be shut off.

  In addition, as the external power supply 18 connected to the external power supply connector 20, various storage batteries can be applied, for example.

  Further, the external power connector 20 includes a detection unit 36 that detects the connection of the cable 34, the detection unit 36 detects whether the cable 34 is connected, and outputs the detection result to the HEMS 12. ing.

  For example, when the cable 34 is connected to the external power supply connector 20 and the cable 34 is connected to the external power supply 18, the detection unit 36 detects the LED that is lit by the power of the external power supply 18 and the lighting of the LED. It may be configured by a cable connection detection circuit provided with a photodiode. Thereby, when the cable 34 is connected to the external power supply connector 20 and the external power supply 18, the LED is turned on, and the photodiode detects the lighting of the LED, so that the connection of the cable 34 can be detected.

  By the way, in the electric power feeding system which concerns on 1st Embodiment, when the power failure generate | occur | produces, the procedure which HEMS12 switches to the external power supply 18 is displayed. Note that, as with the power failure detector 26, the HEMS 12 can be powered by a battery (not shown) or the like so that it can operate even when the power from the system power supply 141 is cut off.

  Specifically, when a power interruption occurs, the power failure detector 26 notifies the HEMS 12 that the power interruption has occurred, and based on information from the distribution board 14 and information from the leakage breaker 30. Then, it is detected whether the system power supply 14 is out of power or the breaker is cut off, and the detection result is output to the HEMS 12.

  In the HEMS 12, when the breaker is shut off, a message for prompting confirmation of the breaker is displayed. On the other hand, in the case of a power failure of the system power supply 14, a message indicating that the power supply of the system power supply 14 is out is displayed and a switch to the external power supply 18 is urged. As a result, the user can start supplying the external power supply 18 by connecting the external power supply connector 20 and the external power supply 18 via the cable 34 and operating the switch portion 32 of the switching switch 24. At this time, the HEMS 12 sequentially displays the procedure for switching to the external power supply 18.

  Then, the flow of the process at the time of the power failure performed by HEMS12 in the electric power feeding system 10 comprised as mentioned above is demonstrated. FIG. 2 is a flowchart illustrating an example of a process flow performed by the HEMS 12 in the power supply system 10 according to the first embodiment. Note that the processing in FIG. 2 will be described as starting when power interruption is detected by the power failure detector 26.

  When the HEMS 12 receives information indicating that power interruption has been detected by the power failure detector 26, in step 100, a start screen for switching to the external power supply 18 is displayed on the HEMS 12. For example, when information indicating that power interruption has been detected is transmitted from the power failure detector 26, the HEMS 12 displays an emergency power supply start screen as shown in FIG. The example of FIG. 3A shows an example in which a message prompting the start of emergency power feeding is displayed during a power failure.

  Next, in step 102, it is determined by the HEMS 12 whether or not a start instruction has been issued. For this determination, for example, the HEMS 12 determines whether or not an operation for instructing “start” in FIG. 3A has been performed. Transition.

  In step 104, it is determined by the HEMS 12 whether or not the distribution board 16 is normal. For example, based on the information obtained from the power failure detector 26, the HEMS 12 determines whether the cause of power interruption is not a breaker interruption but a power supply. If the determination is negative, the process proceeds to step 106, and if the determination is affirmative, the process proceeds to step 108.

  In step 106, a message for prompting check of the distribution board is displayed on the HEMS 12, and the series of processes is terminated. For example, as shown in FIG. 3D, the HEMS 12 prompts confirmation of leakage or overcurrent by displaying a message such as “Please check the breaker”.

  On the other hand, in step 108, a message prompting the connection of the cable 34 connecting the external power supply connector 20 and the external power supply 18 is displayed on the HEMS 12, and the process proceeds to step 110. For example, the HEMS 12 displays a message such as “1. Please connect the cable” as shown in FIG.

  In step 110, the HEMS 12 determines whether or not the connection completion of the cable 34 is detected. In the determination, the HEMS 12 acquires the detection result of the detection unit 36 provided in the external power supply connector 20, and determines whether or not the connection of the cable 34 is detected based on the acquired detection result. If the determination is negative, the process returns to step 108 and the above processing is repeated. If the determination is affirmative, the routine proceeds to step 112.

  In step 112, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 108 and the above processing is repeated. If the determination is affirmative, the routine proceeds to step 114.

  In step 114, it is determined by the HEMS 12 whether or not the switching opening / closing board 24 is normal. For example, the HEMS 12 determines whether or not the switching open / close panel 24 is normal based on information such as a switching state of the earth leakage breaker 30 obtained through the power failure detector 26. If the determination is negative, the process proceeds to step 116, and if the determination is affirmative, the process proceeds to step 118.

  In step 116, a message or the like prompting the inspection confirmation of the switching open / close panel 24 is displayed on the HEMS 12, and the series of processes is terminated. For example, the HEMS 12 prompts confirmation of electric leakage and overcurrent by displaying a message such as “Please check the electric leakage breaker” as in FIG.

  On the other hand, in step 118, the discharge permission signal is output from the HEMS 12 to the external power supply connector 20, and the process proceeds to step 120. As a result, in the external power connector 20, the energization switch 20 </ b> A is turned on by the discharge permission signal so that the external switch 18 is energized from the external power source 18.

  In step 120, a message prompting switching to the external power supply 18 is displayed on the HEMS 12, and the process proceeds to step 122. For example, as shown in FIG. 3C, the HEMS 12 displays a message such as “Ready. Start power generation / discharge. 2. Switch.”

  In step 122, it is determined by the HEMS 12 whether or not switching to the external power source 18 has been detected. In this determination, the HEMS 12 acquires the result of detecting the state of the switch unit 32 by the earth leakage breaker 30 through the power failure detection unit 26, and determines whether the switch unit 32 is switched to the external power source 18 side. If the determination is negative, the process returns to step 120 and the above-described processing is repeated. If the determination is affirmative, the process proceeds to step 124. That is, the user confirms the message displayed on the HEMS 12 and turns on the external power supply 18 to switch the switch unit 32 to the external power supply 18 side, thereby supplying power from the external power supply 18 to each room such as the living room 22. It becomes possible to do.

  In step 124, the HEMS 12 determines whether or not an OK instruction has been made. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 120 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 126.

  In step 126, a message “Emergency power feeding” is displayed on the HEMS 12, and the series of processes is terminated.

  In the first embodiment, the discharge permission signal is output to the external power supply connection device 20 before the switching operation of the switch unit 32 of the switching open / close panel 24. However, the discharge permission signal is output after the switching operation is performed. You may make it output.

  Subsequently, a recovery process performed by the HEMS 12 when a power failure is recovered will be described. FIG. 4 is a flowchart illustrating a flow of an example of a recovery process performed by the HEMS 12 in the power supply system 10 according to the first embodiment.

  That is, when the process proceeds to the recovery process, in step 200, an emergency power stop message is displayed on the HMES 12, and the process proceeds to step 202. For example, as shown in FIG. 3F, the HEMS 12 displays a message such as “Power has been restored. Emergency power supply will be stopped.”

  In step 202, it is determined by the HEMS 12 whether or not a start instruction has been issued. In the determination, for example, the HEMS 12 determines whether or not an operation for instructing “start” in FIG. If the determination is negative, the process waits until the determination is affirmed and proceeds to step 204.

  In step 204, it is determined by the HEMS 12 whether or not the switching opening / closing board 24 is normal. For example, the HEMS 12 determines whether or not the switching open / close panel 24 is normal based on information such as a switching state of the earth leakage breaker 30 obtained through the power failure detector 26. If the determination is negative, the process proceeds to step 206. If the determination is affirmative, the process proceeds to step 208.

  In step 206, a message or the like prompting the inspection confirmation of the switching open / close panel 24 is displayed on the HEMS 12, and the series of processing ends. For example, the HEMS 12 prompts confirmation of electric leakage and overcurrent by displaying a message such as “Please check the electric leakage breaker” as in FIG.

  On the other hand, in step 208, a message prompting switching to the system power supply 14 is displayed on the HEMS 12, and the process proceeds to step 210. For example, as shown in FIG. 3G, the HEMS 12 displays a message such as “Stop the external power supply.

  In step 210, it is determined by the HEMS 12 whether or not switching to the system power supply 14 has been detected. The determination is performed by the HEMS 12 via the power failure detection unit 26 based on the result of the leakage breaker 30 detecting the state of the switch unit 32 in order to determine whether or not the switch unit 32 of the switching switch 24 has been switched by the user. Is acquired, and it is determined whether the switch unit 32 is switched to the system power supply 14 side based on the acquisition result. If the determination is negative, the process returns to step 208 and the above-described processing is repeated. If the determination is affirmative, the routine proceeds to step 212.

  In step 212, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 208 and the above-described processing is repeated. If the determination is affirmative, the routine proceeds to step 214. That is, the user confirms the message displayed on the HEMS 12, stops energization of the external power supply 18, switches the switch unit 32 to the system power supply 14 side, and issues an OK instruction to the living room 22 and the like from the system power supply 14. It becomes possible to resume the power supply to each room.

  In step 214, a discharge stop signal is output from the HEMS 12 to the external power supply connector 20, and the process proceeds to step 216. As a result, in the external power connector 20, the energization switch 20 </ b> A is turned off by the discharge stop signal, and the energization from the external power source 18 to the switching opening / closing panel 24 is interrupted.

  In step 216, a cable removal message is displayed on the HEMS 12, and the process proceeds to step 218. For example, as shown in FIG. 3 (H), the HEMS 12 displays a message such as “2.

  In step 218, it is determined by the HEMS 12 whether or not the disconnection of the cable 34 is detected. In this determination, the HEMS 12 acquires the detection result of the detection unit 36 provided in the external power supply connector 20, and determines whether the disconnection of the cable 34 is detected based on the acquired detection result. If the determination is negative, the process returns to step 216 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 220.

  In step 220, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 216 and the above-described processing is repeated. If the determination is affirmative, the routine proceeds to step 222.

  In step 222, the display “Emergency Power Supply” is stopped by the HEMS 12, and the series of recovery processes is terminated.

(Second Embodiment)

  Then, the electric power feeding system which concerns on 2nd Embodiment of this invention is demonstrated. FIG. 5 is a block diagram showing a schematic configuration of a power feeding system according to the second embodiment of the present invention. Note that the same components as those in the first embodiment described above are described with the same reference numerals.

  As in the first embodiment, the power supply system 11 according to the present embodiment supplies power supplied from a HEMS (Home Energy Management System) 12 that manages energy used in the house, a system power supply 14, and the like in the house. Distribution board 16 to be supplied to each room, external power supply connector 21 for connecting an external power supply 19 other than the system power supply 14, and switching opening / closing board 24 for switching the power supply for supplying power to each room in the house such as the living room 22 It has.

  HEMS12 is provided with the function to manage the energy (especially electric power) used in a house while being provided with the operation part and the display part. Specifically, it has a function of monitoring and displaying the power consumption of each room and the power generation state and usage status of various power generation devices such as a solar power generation device and a fuel cell (not shown). The HEMS 12 basically has a general computer configuration. That is, although not shown in the figure, a CPU, a ROM, a RAM, an input / output port, and the like are provided, and each is connected to a bus such as a system bus or a data bus. An operation unit, a display unit, a memory, and the like are connected to the input / output port, and external devices such as a power failure detector 26 and an external power supply connector 21 described later can be connected. The operation unit may be a touch panel integrated with the display unit, may be provided with a mechanical switch or the like separately from the display unit, or both the touch panel and the mechanical switch. You may make it provide. A touch switch may be applied instead of the mechanical switch.

  A system power supply 14 is connected to the distribution board 16, and power supplied from the system power supply 14 is supplied to each room of a house such as a living room via a switching opening / closing board 24.

  In addition, the distribution board 16 is provided with a power failure detector 26. The power failure detector 26 receives information from the distribution board 16 (for example, information such as a power failure of the system power supply 14 or breaker interruption (trip) due to overcurrent) and information from the switching switch 24. The The power failure detector 26 detects the power interruption including the power failure based on the input information and also detects the cause of the power interruption. Moreover, the power failure detector 26 is connected to the HEMS 12 and outputs the detection result of the power failure detector 26 to the HEMS 12. The power failure detector 26 is connected to a battery 28 in order to be able to detect the presence or absence of a power failure even if the power is shut off due to a power failure or breaker breakage. Has been.

  The switching open / close panel 24 is provided with an earth leakage breaker 30 and a power source for supplying power to each room of the house such as the living room 22 is supplied from the distribution board 16 and the system power source 14 and the external power source connector 21. The switch part 32 which switches to the external power supply 19 connected to is provided. In the second embodiment, the switch unit 32 is described as being manually switched as in the first embodiment, but may be configured to be switchable by an instruction from the HEMS 12 or the like.

  The earth leakage breaker 30 has a function of detecting the switching state of the switch unit 32 (whether the power source is the system power source 14 or the external power source 19) and outputting the detection result to the power failure detection unit 26 of the distribution board 16. ing. It should be noted that the detection of the switching state of the switch unit 32 and the output of the detection result to the power failure detection unit 26 may be performed using the power of the battery 28 in order to enable even when the power is shut off. May be provided.

  The external power supply connector 21 is connected to the switch unit 32 via the leakage breaker 30 of the switching switch 24. The external power supply connector 21 can be connected to an external power supply 19 via a cable 35. The external power supply connector 21 receives power from the connected external power supply 19, and each house in the living room 22 or the like via the switch unit 32. It can be supplied to the room.

  In the present embodiment, as the external power source 19 connected to the external power connector 21 via the cable 35, a vehicle such as a hybrid vehicle or an electric vehicle equipped with a traveling storage battery is applied.

  The external power supply connector 21 is provided with a connector circuit 38 for connecting to the external power supply 19 and communicating with the automobile as the external power supply 19. The connector circuit 38 confirms the connection of the cable 35 by communicating with the automobile as the external power source 19. That is, a communication means for communicating with the connector circuit 38 is provided on the automobile side. In the present embodiment, the vehicle as the external power source 19 is described as having a configuration in which the presence / absence of energization can be controlled based on an instruction from the connector circuit 38.

  Also in the power supply system according to the present embodiment, the procedure for the HEMS 12 to switch to the external power supply 19 when a power failure occurs is displayed as in the first embodiment. Note that, like the power failure detector 26, the HEMS 12 can be powered by a battery (not shown) or the like so that it can operate even when the power from the system power supply 14 is cut off.

  Specifically, the power failure detector 26 notifies the HEMS 12 that the power interruption has occurred when the power interruption detector 26 is interrupted, and information from the distribution board 16 or an earth leakage breaker. Based on the information from 30, it is detected whether the system power supply 14 is out of power or the breaker is cut off, and the detection result is output to the HEMS 12.

  In the HEMS 12, when the breaker is shut off, a message for prompting confirmation of the breaker is displayed. On the other hand, in the case of a power failure of the system power supply 14, a message or the like indicating that the power supply of the system power supply 14 is out is displayed and a switch to the external power supply 19 is urged. As a result, the user can start supplying the external power supply 19 by connecting the external power supply connector 21 and the external power supply 19 with the cable 35 and operating the switch 32 of the switching switch 24. At this time, the HEMS 12 sequentially displays the procedure for switching to the external power source 19.

  In the present embodiment, when the connection of the cable 35 and the switching to the external power source 19 are confirmed by the HEMS 12, the HEMS 12 controls the start of energization of the external power source 19. Specifically, the HEMS 12 outputs a discharge permission signal to the automobile as the external power supply 19 via the connector circuit 38. As a result, the external power supply 19 starts energization when it receives the discharge permission signal.

  Then, the flow of the process at the time of the power failure performed by HEMS12 in the electric power feeding system 11 comprised as mentioned above is demonstrated. FIG. 6 is a flowchart illustrating an example of a flow of processing performed by the HEMS 12 in the power supply system 11 according to the second embodiment of the present invention. The process of FIG. 6 will be described assuming that the process is started when power interruption is detected by the power failure detector 26. Further, the same processes as those in the first embodiment will be described with the same reference numerals.

  When the HEMS 12 receives information indicating that power interruption has been detected by the power failure detector 26, a start screen for switching to the external power source 19 is displayed on the HEMS 12 in step 100. For example, when information indicating that power interruption has been detected is transmitted from the power failure detector 26, the HEMS 12 displays an emergency power supply start screen as shown in FIG. The example of FIG. 3A shows an example in which a message prompting the start of emergency power feeding is displayed during a power failure.

  Next, in step 102, it is determined by the HEMS 12 whether or not a start instruction has been issued. For this determination, for example, the HEMS 12 determines whether or not an operation for instructing “start” in FIG. 3A has been performed. Transition.

  In step 104, it is determined by the HEMS 12 whether or not the distribution board 16 is normal. For example, based on the information obtained from the power failure detector 26, the HEMS 12 determines whether the cause of power interruption is not a breaker interruption but a power supply. If the determination is negative, the process proceeds to step 106, and if the determination is affirmative, the process proceeds to step 108.

  In step 106, a message for prompting check of the distribution board is displayed on the HEMS 12, and the series of processes is terminated. For example, as shown in FIG. 3D, the HEMS 12 prompts confirmation of leakage or overcurrent by displaying a message such as “Please check the breaker”.

  On the other hand, in step 108, a message prompting the connection of the cable 34 connecting the external power supply connector 20 and the external power supply 18 is displayed on the HEMS 12, and the process proceeds to step 110. For example, the HEMS 12 displays a message such as “1. Please connect the cable” as shown in FIG.

  In step 110, the HEMS 12 determines whether or not the connection completion of the cable 34 is detected. The determination is that the HEMS 12 acquires the communication result between the connector circuit 38 and the external power supply 19 from the connector circuit 38 provided in the external power supply connector 21, and whether the connection of the cable 35 is detected based on the acquired communication result. Determine whether or not. More specifically, the connection completion detection of the cable 35 is determined by determining whether or not communication between the connector circuit 38 and the external power source 19 is established. If the determination is negative, the process returns to step 108 and the above processing is repeated. If the determination is affirmative, the routine proceeds to step 112.

  In step 112, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 108 and the above processing is repeated. If the determination is affirmative, the routine proceeds to step 114.

  In step 114, it is determined by the HEMS 12 whether or not the switching opening / closing board 24 is normal. For example, the HEMS 12 determines whether or not the switching open / close panel 24 is normal based on information such as a switching state of the earth leakage breaker 30 obtained through the power failure detector 26. If the determination is negative, the process proceeds to step 116, and if the determination is affirmative, the process proceeds to step 119.

  In step 116, a message or the like prompting the inspection confirmation of the switching open / close panel 24 is displayed on the HEMS 12, and the series of processes is terminated. For example, the HEMS 12 prompts confirmation of electric leakage and overcurrent by displaying a message such as “Please check the electric leakage breaker” as in FIG.

  On the other hand, in step 119, a discharge permission signal is output by the HEMS 12 to the automobile as the external power source 19, and the process proceeds to step 120. That is, the HEMS 12 outputs a discharge permission signal to the external power supply 19 via the connector circuit 38 and the cable 35. In the automobile as the external power source 19, energization is started when a discharge permission signal is received. Thereby, the external power supply 19 is energized to the external power supply connector 21.

  In step 120, a message prompting switching to the external power source 19 is displayed on the HEMS 12, and the process proceeds to step 122. For example, as shown in FIG. 7A, the HEMS 12 displays a message such as “Ready. Power generation / discharge starts. 2. Switch.”

  In step 122, it is determined by the HEMS 12 whether or not switching to the external power source 18 has been detected. In this determination, the HEMS 12 acquires the result of detecting the state of the switch unit 32 by the earth leakage breaker 30 through the power failure detection unit 26, and determines whether the switch unit 32 is switched to the external power source 18 side. If the determination is negative, the process returns to step 120 and the above-described processing is repeated. If the determination is affirmative, the process proceeds to step 124. That is, when the user confirms the message displayed on the HEMS 12 and switches the switch unit 32 to the external power supply 18 side, the power from the external power supply 18 can be supplied to each room such as the living room 22.

  In step 124, the HEMS 12 determines whether or not an OK instruction has been made. In the determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 120 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 126.

  In step 126, a message “Emergency power feeding” is displayed on the HEMS 12, and the series of processes is terminated.

  In the second embodiment, the discharge permission signal is output to the external power supply 19 before the switching operation of the switch unit 32 of the switching open / close panel 24. However, the discharge permission signal is output after the switching operation is performed. You may do it.

  Subsequently, a recovery process performed by the HEMS 12 when a power failure is recovered will be described. FIG. 8 is a flowchart illustrating an example of a recovery process in the power supply system according to the second embodiment.

  That is, when the process proceeds to the recovery process, in step 200, an emergency power stop message is displayed on the HMES 12, and the process proceeds to step 202. For example, as shown in FIG. 3F, the HEMS 12 displays a message such as “Power has been restored. Emergency power supply will be stopped.”

  In step 202, it is determined by the HEMS 12 whether or not a start instruction has been issued. In the determination, for example, the HEMS 12 determines whether or not an operation for instructing “start” in FIG. If the determination is negative, the process waits until the determination is affirmed and proceeds to step 204.

  In step 204, it is determined by the HEMS 12 whether or not the switching opening / closing board 24 is normal. For example, the HEMS 12 determines whether or not the switching open / close panel 24 is normal based on information such as a switching state of the earth leakage breaker 30 obtained through the power failure detector 26. If the determination is negative, the process proceeds to step 206. If the determination is affirmative, the process proceeds to step 208.

  In step 206, a message or the like prompting the inspection confirmation of the switching open / close panel 24 is displayed on the HEMS 12, and the series of processing ends. For example, the HEMS 12 prompts confirmation of electric leakage and overcurrent by displaying a message such as “Please check the electric leakage breaker” as in FIG.

  On the other hand, in step 208, a message prompting switching to the system power supply 14 is displayed on the HEMS 12, and the process proceeds to step 210. For example, as shown in FIG. 7B, the HEMS 12 displays a message such as “Stop the external power supply. 1. Please switch”.

  In step 210, it is determined by the HEMS 12 whether or not switching to the system power supply 14 has been detected. The determination is performed by the HEMS 12 via the power failure detection unit 26 based on the result of the leakage breaker 30 detecting the state of the switch unit 32 in order to determine whether or not the switch unit 32 of the switching switch 24 has been switched by the user. Is acquired, and it is determined whether the switch unit 32 is switched to the system power supply 14 side based on the acquisition result. If the determination is negative, the process returns to step 208 and the above-described processing is repeated. If the determination is affirmative, the routine proceeds to step 212.

  In step 212, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 208 and the above-described processing is repeated. If the determination is affirmative, the process proceeds to step 215. That is, the user confirms the message displayed on the HEMS 12, switches the switch unit 32 to the system power supply 14 side, and issues an OK instruction to restart the power supply from the system power supply 14 to each room such as the living room 22. It becomes possible.

  In step 215, a discharge stop signal is output by the HEMS 12 to the automobile as the external power source 19, and the process proceeds to step 216. That is, the HEMS 12 outputs a discharge stop signal to the external power supply 19 via the connector circuit 38 and the cable 35. In the automobile as the external power source 19, energization is stopped when a discharge stop signal is received. As a result, the energization from the external power source 19 is stopped, so that the power supply from the external power source 19 can be reliably stopped.

  In step 216, a cable removal message is displayed on the HEMS 12, and the process proceeds to step 218. For example, as shown in FIG. 3 (H), the HEMS 12 displays a message such as “2.

  In step 218, the HEMS 12 determines whether or not the disconnection of the cable 35 has been detected. In the determination, the HEMS 12 acquires the communication result with the external power supply 19 from the connector circuit 38 provided in the external power supply connector 21, and the cable 35 is disconnected based on the acquired communication result (detection of communication failure, etc.). It is determined whether or not it has been detected. If the determination is negative, the process returns to step 216 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 220.

  In step 220, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 216 and the above-described processing is repeated. If the determination is affirmative, the routine proceeds to step 222.

  In step 222, the display “Emergency Power Supply” is stopped by the HEMS 12, and the series of recovery processes is terminated.

  As described above, in the power supply system 11 according to the present embodiment, when the external power supply connector 21 and the external power supply 19 are connected by the cable 35 and the switching switch 24 is detected to be normal, discharge is performed. Since the HEMS 12 controls the external power supply 19 so as to start, it is possible to reliably carry out power feeding from the external power supply 19 to the house.

(Third embodiment)

  Then, the electric power feeding system which concerns on 3rd Embodiment of this invention is demonstrated. The power supply system according to the third embodiment is a modification of the power supply system 11 according to the second embodiment, and the basic configuration is the same as that of the second embodiment, and thus detailed description thereof is omitted.

  In the first embodiment and the second embodiment, the switch unit 32 is manually switched. However, in the third embodiment, the switch unit 32 is controlled to be switchable by an instruction from the HEMS 12, and the second embodiment is used. Is the same.

  That is, the switch unit 32 has a function of switching the switch state between the system power supply 14 side and the external power supply 19 side based on a signal from the HEMS 12. In addition, the electric power for switching the switching state at the time of electric power interruption may use the electric power of the battery 28, and you may make it provide another battery.

  Here, the flow of processing at the time of a power failure performed by the HEMS 12 in the power supply system according to the third embodiment will be described. FIG. 9 is a flowchart illustrating an example of a flow of processing performed in the HEMS 12 in the power supply system according to the third embodiment of the present invention. Note that the processing in FIG. 9 will be described as starting when power interruption is detected by the power failure detector 26. Further, the same processes as those in the second embodiment will be described with the same reference numerals.

  When the HEMS 12 receives information indicating that power interruption has been detected by the power failure detector 26, a start screen for switching to the external power source 19 is displayed on the HEMS 12 in step 100. For example, when information indicating that power interruption has been detected is transmitted from the power failure detector 26, the HEMS 12 displays an emergency power supply start screen as shown in FIG. The example of FIG. 3A shows an example in which a message prompting the start of emergency power feeding is displayed during a power failure.

  Next, in step 102, it is determined by the HEMS 12 whether or not a start instruction has been issued. For this determination, for example, the HEMS 12 determines whether or not an operation for instructing “start” in FIG. 3A has been performed. Transition.

  In step 104, it is determined by the HEMS 12 whether or not the distribution board 16 is normal. For example, based on the information obtained from the power failure detector 26, the HEMS 12 determines whether the cause of power interruption is not a breaker interruption but a power supply. If the determination is negative, the process proceeds to step 106, and if the determination is affirmative, the process proceeds to step 108.

  In step 106, a message for prompting check of the distribution board is displayed on the HEMS 12, and the series of processes is terminated. For example, as shown in FIG. 3D, the HEMS 12 prompts confirmation of leakage or overcurrent by displaying a message such as “Please check the breaker”.

  On the other hand, in step 108, a message prompting the connection of the cable 34 connecting the external power supply connector 20 and the external power supply 18 is displayed on the HEMS 12, and the process proceeds to step 110. For example, the HEMS 12 displays a message such as “1. Please connect the cable” as shown in FIG.

  In step 110, the HEMS 12 determines whether or not the connection completion of the cable 34 is detected. The determination is that the HEMS 12 acquires the communication result between the connector circuit 38 and the external power supply 19 from the connector circuit 38 provided in the external power supply connector 21, and whether the connection of the cable 35 is detected based on the acquired communication result. Determine whether or not. More specifically, the connection completion detection of the cable 35 is determined by determining whether or not communication between the connector circuit 38 and the external power source 19 is established. If the determination is negative, the process returns to step 108 and the above processing is repeated. If the determination is affirmative, the routine proceeds to step 112.

  In step 112, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 108 and the above processing is repeated. If the determination is affirmative, the routine proceeds to step 114.

  In step 114, it is determined by the HEMS 12 whether or not the switching opening / closing board 24 is normal. For example, the HEMS 12 determines whether or not the switching open / close panel 24 is normal based on information such as a switching state of the earth leakage breaker 30 obtained through the power failure detector 26. If the determination is negative, the process proceeds to step 116, and if the determination is affirmative, the process proceeds to step 119.

  In step 116, a message or the like prompting the inspection confirmation of the switching open / close panel 24 is displayed on the HEMS 12, and the series of processes is terminated. For example, the HEMS 12 prompts confirmation of electric leakage and overcurrent by displaying a message such as “Please check the electric leakage breaker” as in FIG.

  On the other hand, in step 119, a discharge permission signal is output by the HEMS 12 to the automobile as the external power source 19, and the process proceeds to step 121. That is, the HEMS 12 outputs a discharge permission signal to the external power supply 19 via the connector circuit 38 and the cable 35. In the automobile as the external power source 19, energization is started when a discharge permission signal is received. Thereby, the external power supply 19 is energized to the external power supply connector 21.

  In step 121, an external power supply switching confirmation message is displayed on the HEMS 12, and the process proceeds to step 123. For example, the HEMS 12 displays a message such as “Switch to external power”.

  In step 123, the HEMS 12 determines whether or not an OK instruction has been issued. In the determination, for example, the HEMS 12 determines whether or not an operation for instructing “OK” or the like has been performed. If the determination is negative, the process returns to step 121 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 125.

  In step 125, the power of the switching open / close panel 24 is switched by HEMS, and the process proceeds to step 126. That is, the HEMS 12 instructs the switch unit 32 of the switching opening / closing board 24 to switch to the external power source 19. When receiving the instruction, the switch unit 32 switches the power supplied to each room such as the living room 22 to the external power source 19 side. As a result, power from the external power source 18 can be supplied to each room such as the living room 22.

  In step 126, a message “Emergency power feeding” is displayed on the HEMS 12, and the series of processes is terminated.

  In the third embodiment, the discharge permission signal is output to the external power supply 19 before switching the power source of the switching open / close panel 24. However, the discharge permission signal may be output after the power source switching. Good.

  Subsequently, a recovery process performed by the HEMS 12 when a power failure is recovered will be described. FIG. 10 is a flowchart illustrating an example of a restoration process in the power supply system according to the third embodiment.

  That is, when the process proceeds to the recovery process, in step 200, an emergency power stop message is displayed on the HMES 12, and the process proceeds to step 202. For example, as shown in FIG. 3F, the HEMS 12 displays a message such as “Power has been restored. Emergency power supply will be stopped.”

  In step 202, it is determined by the HEMS 12 whether or not a start instruction has been issued. In the determination, for example, the HEMS 12 determines whether or not an operation for instructing “start” in FIG. If the determination is negative, the process waits until the determination is affirmed and proceeds to step 204.

  In step 204, it is determined by the HEMS 12 whether or not the switching opening / closing board 24 is normal. For example, the HEMS 12 determines whether or not the switching open / close panel 24 is normal based on information such as a switching state of the earth leakage breaker 30 obtained through the power failure detector 26. If the determination is negative, the process proceeds to step 206. If the determination is affirmative, the process proceeds to step 207.

  In step 206, a message or the like prompting the inspection confirmation of the switching open / close panel 24 is displayed on the HEMS 12, and the series of processing ends. For example, the HEMS 12 prompts confirmation of electric leakage and overcurrent by displaying a message such as “Please check the electric leakage breaker” as in FIG.

  On the other hand, in step 207, an external power supply switching confirmation message is displayed on the HEMS 12, and the process proceeds to step 209. For example, the HEMS 12 displays a message such as “Stop and switch the external power supply”.

  In step 209, the HEMS 12 determines whether or not an OK instruction has been issued. In the determination, for example, the HEMS 12 determines whether or not an operation for instructing “OK” has been performed. If the determination is negative, the process returns to step 207 to repeat the above-described processing. If the determination is affirmative, the process proceeds to step 211.

  In step 211, the power source of the switching opening / closing board 24 is switched, and the process proceeds to step 215. That is, the HEMS 12 instructs the switch unit 32 of the switching opening / closing board 24 to switch to the system power supply 14. When receiving the instruction, the switch unit 32 switches the power supply to each room such as the living room 22 to the system power supply 14 side. As a result, the supply of power from the system power supply 14 to each room such as the living room 22 can be resumed.

  In step 215, a discharge stop signal is output by the HEMS 12 to the automobile as the external power source 19, and the process proceeds to step 216. That is, the HEMS 12 outputs a discharge stop signal to the external power supply 19 via the connector circuit 38 and the cable 35. In the automobile as the external power source 19, energization is stopped when a discharge stop signal is received. As a result, the energization from the external power source 19 is stopped, so that the power supply from the external power source 19 can be reliably stopped.

  In step 216, a cable removal message is displayed on the HEMS 12, and the process proceeds to step 218. For example, as shown in FIG. 3 (H), the HEMS 12 displays a message such as “2.

  In step 218, the HEMS 12 determines whether or not the disconnection of the cable 35 has been detected. In the determination, the HEMS 12 acquires the communication result with the external power supply 19 from the connector circuit 38 provided in the external power supply connector 21, and the cable 35 is disconnected based on the acquired communication result (detection of communication failure, etc.). It is determined whether or not it has been detected. If the determination is negative, the process returns to step 216 and the above processing is repeated. If the determination is affirmative, the process proceeds to step 220.

  In step 220, the HEMS 12 determines whether or not an OK instruction has been issued. In this determination, for example, the HEMS 12 determines whether or not an operation of instructing “OK” in FIG. If the determination is negative, the process returns to step 216 and the above-described processing is repeated. If the determination is affirmative, the routine proceeds to step 222.

  In step 222, the display “Emergency Power Supply” is stopped by the HEMS 12, and the series of recovery processes is terminated.

  As described above, in the power supply system according to the present embodiment, the discharge is started when it is detected that the external power supply connector 21 and the external power supply 19 are connected by the cable 35 and the switching switch 24 is normal. Since the HEMS 12 controls the external power source 19 and the HEMS 12 controls the switch unit 32 so that the switch unit 32 of the switching switch 24 is switched to the external power source 19 side, power supply from the external power source 19 to the house is ensured. Can be implemented.

  In each of the above embodiments, when a power failure is detected, a predetermined procedure for switching to an external power source is sequentially switched based on the connection detection result of the cables 34 and 35 and the state detection result of the switch unit 32 to sequentially switch the HEMS 12. However, the present invention is not limited to this. For example, the switching procedure to the external power source may be collectively displayed on the HEMS 12.

  In each of the above embodiments, the external power connectors 20 and 21 and the external power sources 18 and 19 are connected by the cables 34 and 35. However, the present invention is not limited to this example. You may make it apply the connection means which electrically connects using a technique non-contactingly. In this case, for example, a proximity sensor or the like is provided in the external power supply connector 20 or 21 and the external power supply connector 20 or 21 and the external power supply 18 or 19 are detected by detecting the approach of the external power supply 18 or 19. Can be detected.

  The external power connector 20 of the first embodiment outputs a discharge permission signal to the external power source connection device 2 instead of outputting a discharge permission signal to the external power source 19 as applied to the third embodiment, and a power switch It is good also as a form which controls 20A.

  In addition, each process of the HEMS 12 in the above embodiment may be stored in a storage medium as a program so that it can be distributed, or may be a process performed by hardware.

10 Power supply system 12 HEMS
14 System power supply 16 Distribution board 18, 19 External power supply 20, 21 External power supply connector 20A Energizing switch 24 Switching open / close panel 26 Power failure detector 30 Earth leakage breaker 32 Switch part 35 Cable 36 Detection part 38 Connector circuit

Claims (6)

Power receiving means for receiving power from an external power source and starting energization according to an instruction from the outside;
Connection detecting means for detecting a connection state between the external power source and the power receiving means;
State detection means for detecting the state of the switching means for switching the power supply source to the house to the system power supply or the external power supply;
When the connection detecting means detects that the external power source and the power receiving means are connected, and the state detecting means detects that the state of the switching means is normal, the energization of the power receiving means Control means for controlling the power receiving means so as to start power supply from the external power source,
A power failure detection means for detecting a power failure state;
When a power failure state is detected by the power failure detection means, display means for displaying a switching procedure for switching the power supply source to be supplied to the house to the external power source,
Equipped with a,
A power feeding system in which the display unit sequentially switches and displays the switching procedure based on detection results of the connection detection unit and the state detection unit . Power receiving means for receiving power from an external power source that starts energization according to an instruction from the outside;
Connection detecting means for detecting a connection state between the external power source and the power receiving means;
State detection means for detecting the state of the switching means for switching the power supply source to the house to the system power supply or the external power supply;
When the connection detecting unit detects that the external power source and the power receiving unit are connected, and the state detecting unit detects that the state of the switching unit is normal, the external power source Control means for controlling the external power supply so as to start power supply;
A power failure detection means for detecting a power failure state;
When a power failure state is detected by the power failure detection means, display means for displaying a switching procedure for switching the power supply source to be supplied to the house to the external power source,
Equipped with a,
A power feeding system in which the display unit sequentially switches and displays the switching procedure based on detection results of the connection detection unit and the state detection unit . Power receiving means for receiving power from an external power source that starts energization according to an instruction from the outside;
Connection detecting means for detecting a connection state between the external power source and the power receiving means;
Switching means for switching a power supply source to a house to a system power supply or the external power supply;
State detecting means for detecting the state of the switching means;
When the connection detecting unit detects that the external power source and the power receiving unit are connected, and the state detecting unit detects that the state of the switching unit is normal, the external power source Control means for controlling the external power supply to start power supply and controlling the switching means to switch the power supply source for the house to the external power supply;
A power failure detection means for detecting a power failure state;
When a power failure state is detected by the power failure detection means, display means for displaying a switching procedure for switching the power supply source to be supplied to the house to the external power source,
Equipped with a,
A power feeding system in which the display unit sequentially switches and displays the switching procedure based on detection results of the connection detection unit and the state detection unit . Further comprising a power failure detection means for detecting a power failure state and a power recovery state representing recovery from the power failure state,
When a power failure state is detected by the power failure detection means, control by the control means is started, and when the power recovery state is detected by the power failure detection means, the control means energizes the power receiving means. The power feeding system according to claim 1, wherein the power receiving unit is further controlled to stop . Further comprising a power failure detection means for detecting a power failure state and a power recovery state representing recovery from the power failure state,
When a power outage state is detected by the power outage detection means, control by the control means is started, and when the power recovery state is detected by the power outage detection means, the control means receives power from the external power source. The power feeding system according to claim 2 , further controlling the external power supply to stop the supply. Further comprising a power failure detection means for detecting a power failure state and a power recovery state representing recovery from the power failure state,
When a power failure state is detected by the power failure detection means, control by the control means is started, and when the power recovery state is detected by the power failure detection means, the control means supplies power to the house. The power feeding system according to claim 3 , wherein the switching unit is further controlled to switch a power source to the system power source, and the external power source is further controlled to stop power supply from the external power source .

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