JP2013183608A - Power supply system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power supply system that determines a system to which power should be preferentially supplied from the trend of power consumption of each system.SOLUTION: A memory unit 171 stores current values of a first system 121, a second system 122, and a third system 123, which are measured in time series by current sensors 141 to 143, respectively. A control device 161 determines attributes of apparatuses that are connected to the first system 121, the second system 122, and the third system 123, respectively on the basis of power consumption in time series that is calculated from the current values that are stored in the memory unit 171; and if power to be supplied to each of the first system 121, the second system 122, and the third system 123 is restricted, the control device determines a system to which power is preferentially supplied, out of the first system 121, the second system 122, and the third system 123, according to the determined attributes of the apparatuses.

Description

  The present invention relates to a system that distributes and supplies power to each of a plurality of systems provided in a facility such as a building. In particular, power should be preferentially supplied from the tendency of power consumption of each system in the facility. The present invention relates to a power supply system for determining a system.

  A facility such as a building is usually supplied with power from a commercial power source such as system power. Considering the case where the supply of power from the commercial power supply is delayed due to a power failure, a storage battery, fuel cell, power generation by an internal combustion engine, solar power generation, or EV (Electric Vehicle) that stores the power supplied from the commercial power supply in normal times In some cases, an auxiliary power source such as an in-vehicle storage battery included in a vehicle such as HV (Hybrid Vehicle) or PHV (Plug-in Hybrid Vehicle) may be provided.

  However, there is a limit to the power that can be supplied to the facility with the above-described auxiliary power source, and thus the auxiliary power may not be able to cover all the power required by the facility.

  In the technique described in Patent Document 1, it has been proposed to selectively stop the power supply from the power supply device to each power load according to the power usage.

JP 2007-236023 A

  However, in the technique described in Patent Document 1, the power load that can supply power by the power supply device is determined according to the prediction of the power consumption, but in the power load, for example, a refrigerator, Some have to work 24 hours. Therefore, determining the power load to which power is supplied based only on the power consumption and the power supply capability of the power supply apparatus has the problem that the power supply to the power load that needs to operate for 24 hours may be delayed. It was.

  The present invention has been made in view of the above facts, and an object of the present invention is to provide a power feeding system that determines a system to which power should be preferentially supplied from the tendency of power consumption of each system in a facility. .

  In order to achieve the above object, the invention according to claim 1 is connected to a commercial power source and another power source, and is provided in each of the plurality of systems to which power is supplied, and the plurality of systems. A plurality of measuring means for measuring the current values of the system in time series, a current value storage means for storing the current values of the plurality of systems each measured in time series by the plurality of measuring means, and the current value storing means Based on the time-series current values in each of the plurality of stored systems, the attributes of devices connected to each of the plurality of systems are determined, and the power supplied to the plurality of systems is limited. And a control unit for determining a system to which power supply should be prioritized among the plurality of systems, and a system to which the power supply determined by the control unit should be prioritized based on the determined attribute of the device. Display means for It is characterized in Rukoto.

  The plurality of measuring means are current sensors for measuring current in time series.

  The current value storage means is a storage device such as a memory unit that stores current values of each system measured in time series by the measurement means.

  The control means determines the attribute of the device connected to each system based on the current value stored in the current value storage means, and priority is given to power supply in each system according to the determined attribute of the device. The system to be determined can be determined.

  Further, the display means can display the determination result by the control means.

  In addition, as in the invention described in claim 2, in the event of a power failure, power supply switching means for supplying power of the other power source to the plurality of systems instead of the commercial power source, and the plurality of systems Input means capable of specifying a system to which power is supplied, and provided in each of the plurality of systems, and the power supplied to the plurality of systems is turned on or off based on the operation of the input means. A plurality of switch means, and an operation history storage means for storing an operation history of the input means, wherein the control means supplies the power of the other power source to the plurality of systems. The time when the switching is performed is detected, the current value in the time series in each of the plurality of systems stored in the current value storage means, and the detected power source switching means uses the power of the other power source To multiple systems From the time of switching to supply the power, the system that was used immediately before the power failure is identified from among the plurality of systems, and the operation history of the input means stored in the operation history storage means The system specified as the system to which power is supplied in the power outage immediately before the power outage is specified, and the power used in the power outage immediately before the specified power outage and the system used immediately before the specified power outage is supplied. Based on the system designated as the system to be operated and the attributes of the devices connected to each of the determined plurality of systems, the system to be prioritized for power supply in the event of a power outage is determined among the plurality of systems You may make it do.

  According to the invention described in claim 2, the system used immediately before the specified power failure, the system designated as the system to which power is supplied at the power failure immediately before the power failure, and the determined plurality of systems Based on the attributes of the devices connected to each, it is possible to determine which of the plurality of systems should be prioritized for power supply in the event of a power failure.

  According to a third aspect of the present invention, the control means is configured such that each of the plurality of systems is based on a current value in a time series in each of the plurality of systems stored in the current value storage means. The maximum power consumption, the minimum power consumption, and the average power consumption are calculated, and it is determined that the refrigerator is connected to a system in which the difference between the calculated maximum power consumption and the average power consumption is equal to or greater than a threshold, and continuous for 24 hours or more. It is determined that a device that operates for 24 hours is connected to a system whose minimum power consumption calculated from the current value measured in time series is not 0, and the refrigerator is determined to be connected One of the power outages, the second largest added to the system determined to be connected to the device that operates for 24 hours, the third largest added to the system used immediately before the power outage, Previous power outage Each had a significant point addition in 4 th been strains designated as strains to which electric power is supplied, the sum of the point addition may be determined that the system should give priority to electric power supply in the case of the power failure a great strain.

  According to the invention described in claim 3, whether or not the refrigerator is connected, whether or not a device that operates for 24 hours is connected, whether or not the system was used immediately before the power failure, It is possible to identify a system to which power is to be supplied by comprehensively determining whether or not the system is designated as a system to which power is supplied.

  According to a fourth aspect of the present invention, the control means may use a system having the largest sum of the added points as a system in which power supply has the highest priority in the event of a power failure. This makes it possible to clarify the system to which power should be supplied with the highest priority.

  According to a fifth aspect of the present invention, the control means has a system in which the sum of the added points is maximum, a system in which the sum of the added points is maximum, and a sum of the added points according to a time zone of the power failure. You may make it display on the said display means from the 2nd largest system | strain or the system | strain with the largest sum of the points to a system | strain with the 3rd largest sum of the points | pieces as a system | strain in which power supply is prioritized at the time of power failure. As a result, it is possible to clearly indicate a system to which priority should be given to the power supply according to the power failure time zone.

  Further, as in the invention described in claim 6, when the time when the power failure starts and the time when the power failure ends are previously known, the control means can be supplied from the other power source grasped in advance. According to the time between power and the time when the power outage starts and the time when the power outage ends, determine a system capable of supplying power during the power outage from a system with a large sum of the added points, The determination result may be controlled to be displayed on the display means. As a result, it is possible to clearly indicate a system that can supply power based on the capability of another power source during a so-called planned power outage.

  Further, as in the invention according to claim 7, the other power source includes a storage battery storing power supplied from the commercial power source, a vehicle storage battery, a fuel cell, an internal combustion engine of a vehicle capable of running with the power of the vehicle storage battery It may be at least one of a power generation device using an engine and a solar power generation device. As a result, various power sources can be used as other power sources.

  As described above, according to the present invention, there is an effect that it is possible to provide a power feeding system that determines a system to which power should be preferentially supplied from the tendency of power consumption of each system in a facility.

It is the schematic which shows an example of the electric power feeding system which concerns on embodiment of this invention. It is a block diagram which shows schematic structure of HEMS contained in the electric power feeding system which concerns on embodiment of this invention. It is a flowchart of the process for determining whether it is the system | strain with which the refrigerator in the electric power feeding system which concerns on embodiment of this invention is connected. It is the figure which showed an example of the power consumption of each system | strain used for determination whether it is a system | strain with which the refrigerator in the electric power feeding system which concerns on embodiment of this invention is connected. It is a flowchart of the process for determining whether the apparatus which operate | moves for 24 hours in the electric power feeding system which concerns on embodiment of this invention is the system | strain connected. It is the figure which showed an example of the power consumption of each system | strain used for determination whether the apparatus which operate | moves for 24 hours in the electric power feeding system which concerns on embodiment of this invention is a system | strain connected. It is a figure which shows an example of the determination table used when determining the system | strain which supplies electric power preferentially at the time of a power failure in embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic diagram illustrating an example of a power feeding system 100 according to an embodiment of the present invention. In FIG. 1, a solid line indicates a power line to which power is supplied, and a broken line indicates an information line through which information related to control passes.

  In FIG. 1, electric power from a commercial power source by an electric power company is supplied to a facility such as a building via a power supply switching device 110.

  The power supply switching device 110 not only cuts off the power from the commercial power supply as necessary, but also replaces the commercial power supply with a storage battery, a fuel cell, power generation by an internal combustion engine, solar power generation, or a vehicle such as EV, HV or PHV. Can be switched to an auxiliary power source such as an in-vehicle storage battery.

  The power supplied through the power supply switching device 110 is distributed to a plurality of systems such as the first system 121, the second system 122, and the third system 123 in FIG. In FIG. 1, the first system 121 is connected to the living room 151, the second system 122 is connected to the dining room 152, the third system 123 is connected to the kitchen 153, and the living room 151 includes a facsimile machine 151A that operates for 24 hours. It is assumed that the kitchen 153 is provided with a refrigerator 153A that needs to operate even during a power failure.

  In FIG. 1, only three systems are shown for simplification of description, but in this embodiment, three or more systems or three systems or less may be used, and the number of systems is not particularly limited.

  Each of the plurality of systems is connected to a plurality of areas such as a living room provided in a facility such as a building, and power distributed to each system is supplied to each of the areas such as a living room.

  The first system 121, the second system 122, and the third system 123 are respectively provided with shut-off devices 131 to 133 that are switches that turn off or on the power supplied to each system as necessary.

  The first system 121, the second system 122, and the third system 123 are provided with current sensors 141 to 143 that measure the current of each system in time series.

  A control device 161 that controls the power feeding system according to the present embodiment is connected to the power switching device 110, the interruption devices 131 to 133, and the current sensors 141 to 143.

  A memory unit 171 is connected to the control device 161. The control device 161 calculates the power consumption in the time series of each system from the current values in the time series of each system measured by the current sensors 141 to 143, and calculates the current value and power consumption in the time series of each system. The current value is stored in the memory unit 171 in association with the date and time when the current value was measured.

  The control device determines a power system that should be prioritized for power supply when the commercial power supply fails in the power supply, from the tendency of power consumption stored in the memory unit 171.

  The control device 161 is connected to a display / input device 181 that displays various types of information to the user and receives operations from the user.

  In the present embodiment, as an operation for switching the power supply switching device 110 from a commercial power source to an auxiliary power source and an operation for designating a system to be used at the time of a power failure, an operation to turn on a circuit breaker used at the time of a power failure or before a power failure In addition, an operation to turn on the shut-off device of the system in which the shut-off device is in an on state even after a power failure is possible via the display / input device 181.

  The control device 161 displays, on the display / input device 181, a system that is determined to prioritize power supply when the commercial power supply fails. Based on the operation of the display / input device 181 by the user, the control device 161 and Controls the shut-off devices 131-133.

  In the present embodiment, when an operation for designating a system to be used at the time of a power failure is performed from the display / input device 181, the shut-off device provided in the designated system is turned on, and the system is provided in the undesignated system. It is controlled by the control device 161 so that the shut-off device being turned off.

  Note that the control device 161 and the power switching device 110, and the control device 161 and each shut-off device are connected by an information line as shown by a broken line in FIG. 1, and the control device 161 is connected to the power switch device 110 and each shut-off device. The state of the device can be detected in real time.

  The control device 161, the memory unit 171 and the display / input device 181 according to the present embodiment may use a Home Energy Management System (HEMS) that performs power supply management and control in a building.

  FIG. 2 is a block diagram showing a schematic configuration of the HEMS 30 included in the power supply system according to the embodiment of the present invention.

  As shown in FIG. 2, the HEMS 30 includes a CPU 36, a ROM 38, a RAM 40, and an input / output port 42. These include a bus 44 such as an address bus, a data bus, and a control bus. Are connected to each other.

  A display unit 46, an operation unit 48, and a memory 50 are connected to the input / output port 42 as various input / output devices. Note that the display unit 46 and the operation unit 48 are integrally configured as the display / input device 181 in FIG. 1, and the operation unit 48 may be a touch panel provided on the display unit 46, or may be a touch panel. In addition, an operation button may be provided.

  The memory 50 corresponds to the memory unit 171 of FIG. 1 and stores not only the current value and power consumption of each system but also various controls related to power supply and display control for displaying on the display unit 46. A program for performing, a program for determining a system that prioritizes power supply in the event of a power failure, and various information for executing these programs are stored.

  In the present embodiment, the program stored in the memory 50 is developed in the RAM 40 and the like and executed by the CPU 36, thereby performing various controls relating to power supply and control such as display control.

  Further, the input / output port 42 is connected to the power switching device 110, the shut-off devices 131 to 133, and the current sensors 141 to 143.

  Hereinafter, the operation of the power feeding system according to the present embodiment will be described. The power feeding system 100 according to the present embodiment determines the attribute of the device connected to each system based on the power consumption of each system.

  Specifically, based on the power consumption of each system, it is determined whether or not a refrigerator is connected to each system and whether or not a device that operates for 24 hours is connected to each system.

  Moreover, in this Embodiment, the system | strain used immediately before the power failure and the system | strain used at the time of a power failure are determined from the electric current value of each system | strain, the operation | movement log | history of the power supply switching device 110 and the interruption | blocking devices 131-133, etc. .

  First, control for determining whether or not the system is connected after refrigeration will be described. FIG. 3 is a flowchart of processing for determining whether or not the refrigerator in the power feeding system according to the present embodiment is connected. Note that each procedure shown in FIG. 3 is performed individually in each system.

  In step 300, the current value of the system related to the determination is measured every predetermined time by the current sensor.

  The predetermined time may be various lengths, and in this embodiment, it is about 10 minutes. However, this predetermined time can be changed in consideration of the characteristics of the connected equipment such as a refrigerator. It may be about minutes.

  In step 302, the power consumption of the system is calculated from the measured current value. Since the voltage of electric power supplied to facilities such as buildings is approximately 100V, if the current value of each system can be measured, the power consumption of each system is calculated by the product of the measured current value and the voltage value of 100V. A separate means for measuring voltage is not required in this embodiment.

  However, in systems where voltage fluctuations or the like may occur, in addition to the current sensors 141 to 143, a means for measuring the voltage may be separately provided in each system.

  In step 304, the measured current value and the calculated power consumption are stored in the memory unit 171.

  In step 306, it is determined whether or not the current has been measured a prescribed number of times. If the prescribed number of times has been measured, the procedure proceeds to step 308. Whether or not the measurement has been performed a specified number of times can be determined by whether or not the current value stored in the memory unit 171 is a number corresponding to the specified number of times.

  The specified number of times is the number of times that it can be determined whether or not the refrigerator is connected to each system. The number of times can be various, but in order to grasp the characteristics of the device from the power consumption, it is necessary to grasp the change in the power consumption at each time of day, and as in this embodiment, 10 If it is desirable to measure every minute, it is possible to measure a total of 144 times for 24 hours.

  If it is determined in step 306 that the current measurement has not been performed a predetermined number of times, the procedure is returned to step 300 or earlier, and the current measurement is performed again.

  In step 308, the maximum power consumption and the average power consumption are calculated from the power consumption for the specified number of times stored in the memory unit 171.

  FIG. 4 is a diagram showing an example of the power consumption of each system used for determining whether or not the system is connected to the refrigerator in the present embodiment, the average power consumption from the result of the power consumption for the specified number of times, Maximum power consumption and minimum power consumption are respectively calculated.

In step 310, it is determined whether a refrigerator is connected to the system according to the following equation (1).
Maximum power consumption-average power consumption> specified value (1)

  When the refrigerator compresses the refrigerant by operating the induction motor, the power consumption corresponding to 5 to 10 times that of the standby state suddenly occurs, so that the maximum power consumption protruding from the average power consumption is recognized. It can be determined that a refrigerator is connected to the system.

  Since various values are conceivable depending on the power consumption characteristics of each refrigerator, it is desirable that the determination value be calculated statistically through tests. In this embodiment, as an example, the determination value is 300 W.

  In step 310, if the difference between the maximum power consumption and the average power consumption exceeds a specified value according to equation (1), it is determined in step 312 that a refrigerator is connected to the system, and the flowchart of FIG. The process by is terminated.

  As described above, according to the procedure of the flowchart of FIG. 3, it is possible to determine whether or not a refrigerator is connected to the system from the tendency of power consumption of the system.

  Next, a process for determining whether or not a device that operates for 24 hours is connected to the system will be described with reference to FIG. FIG. 5 is a flowchart of a process for determining whether or not the system operating for 24 hours in the power supply system according to the embodiment of the present invention is a connected system. Note that each procedure shown in FIG. 5 is performed individually in each system.

  In step 500, the 24-hour counter is reset to 0, and in step 502, current measurement is started every predetermined time. The predetermined time may have various lengths, and is 10 minutes in the present embodiment.

  In step 504, the power consumption of the system is calculated from the measured current value.

  In step 506, the measured current value and the calculated power consumption are stored in the memory unit 171.

  In step 508, it is determined whether or not 24 hours have elapsed since the start of current measurement with reference to the 24-hour meter. If 24 hours have not elapsed since the start of measurement, the procedure is changed to step 500 or earlier. return.

  If it is determined in step 508 that 24 hours have elapsed since the start of current measurement, the minimum power consumption of the system is calculated in step 510.

  FIG. 6 is a diagram illustrating an example of power consumption of each system used for determining whether or not the system operating for 24 hours in the power supply system according to the present embodiment is a connected system. In FIG. 6, the current value of each system is measured every 10 minutes for 24 hours, the power consumption of each system is calculated from the measured current value, and the minimum power consumption of each system is calculated.

  In step 512, it is determined whether or not the minimum power consumption is 0W. If the minimum power consumption is 0W, it is determined in step 514 that no device operating for 24 hours is connected to the system, and the processing in FIG. Since some devices consume weak power in a standby state, in step 512, when the minimum power consumption is less than a predetermined threshold, it may be determined that the minimum power consumption is 0 W. Although various values can be considered as the threshold, it can be considered to be about 3 to 5 W as an example.

  If it is determined in step 512 that the minimum power consumption is 0 W, it is determined in step 516 that a device that operates for 24 hours is connected to the system, and the processing in FIG.

  As described above, according to the processing of FIG. 5, it is possible to determine whether or not a device that operates for 24 hours is connected to each system.

  In this embodiment, in addition to determining whether or not a refrigerator is connected to each of the systems described above and whether or not a device that operates for 24 hours is connected to each system, the system was used immediately before the power failure. Identify the grid and the grid specified as the grid to which power is supplied during the previous power failure.

  First, the identification of the system used immediately before the power failure will be described.

  It is desirable that power is continuously supplied to a system that has been used, that is, supplied with power immediately before the power failure, even if a power failure occurs. In the present embodiment, the power consumption in the time series of each system is stored in the memory unit 171. Based on this storage, the system used immediately before the occurrence of a power failure is specified.

  Specifically, the control device 161 detects that the power supply switching device 110 has been switched to supply the power of the auxiliary power supply to each system instead of the commercial power supply and the time when the power supply switching device 110 has been switched, and is stored in the memory unit 171. In addition, the system used immediately before the power failure is specified from the current value in time series in each system and the time when the power supply switching device 110 is switched to supply the power of the auxiliary power supply to each system.

  Next, a system designated as a system to which power is supplied at the previous power failure will be described.

  Since the system designated as the system to which power is supplied at the previous power failure is likely to have important equipment connected, it is desirable that power be supplied at the next power failure. In the present embodiment, the system specified as the system to which power is supplied at the time of the previous power failure is specified with reference to the history that the user stored in the memory unit 171 operates the shut-off devices 141 to 143.

  In the present embodiment, as described above, since the operation for designating the system to be used at the time of a power failure is possible from the display / input device 181, the system that was the target of these operations at the previous power failure is stored in the memory unit 171. The operation history of the display / input device 181 can be specified.

  As described above, in the present embodiment, (1) a system to which a refrigerator is connected, (2) a system to which equipment that operates for 24 hours is connected, (3) a system that was used immediately before a power failure, (4) Each of the systems designated as systems to which power is supplied at the previous power failure was determined.

  In the present embodiment, based on the items (1) to (4), a system to which power supply should be prioritized in the event of a power failure is determined.

  Specifically, (1) the maximum score is added to the system determined to be connected to the refrigerator, and (2) the second highest score is added to the system determined to be connected to a device that operates for 24 hours. (3) The third largest point is added to the system used immediately before the power failure, and (4) the fourth largest point is added to the system designated as the system to which power is supplied at the previous power failure. A system with a large sum is determined as a system that should prioritize power supply in the event of a power failure.

  In the present embodiment, the determination relating to the items (1) to (4) is performed in all of the plurality of systems. Therefore, the system in which the sum of the added points for all the items (1) to (4) is maximized is the system to which power is to be supplied with the highest priority in the event of a power failure.

  FIG. 7 is a diagram illustrating an example of a determination table used when determining a system that preferentially supplies power during a power failure in the present embodiment.

  In FIG. 7, (1) 5 points for the system determined to be connected to the refrigerator, (2) 4 points for the system determined to be connected for 24 hours, (3) Power failure 2 points are added to the system used immediately before (4) one point is added to the system designated as the system to which power is supplied at the previous power failure, and the sum of the points is obtained for each system. Priorities are given according to the order of sum.

  In the present embodiment, the priority order of each system obtained as shown in FIG. 7 is displayed on the display / input device 181 so that the user can refer to it when specifying the system to be used in the event of a power failure. Moreover, the system which HEMS uses by the automatic control at the time of a power failure may be selected according to the displayed priority, and the user may be able to customize the automatic control by the HEMS later.

  In the present embodiment, the system with the largest sum of the above points may be displayed as a system in which power supply is prioritized during a power failure. Moreover, HEMS may select by automatic control the system | strain with the largest sum of the above-mentioned added points as a system | strain used at the time of a power failure, and a user may be able to customize automatic control by HEMS later.

  In the present embodiment, the power supply is given the highest priority in the event of a power failure, the first and second priority in the priority order, or the first to third priority in the priority order according to the time zone when the power failure occurs. It may be displayed as a system in which power supply is prioritized at the time of a power failure.

  For example, at midnight, power consumption seems to be small, so the first to third priority rankings are displayed as systems where power supply is prioritized during a power outage, and during periods of high power consumption such as daytime In the case of a power failure, it may be possible to display a system in which power supply has the highest priority.

  In addition, the control device 161 grasps in advance the power that can be supplied from the auxiliary power supply, and when the time at which the power failure starts and the time at which the power failure ends are known in advance in a so-called planned power failure, It is also possible to determine a system that can supply power during the planned power outage from among the systems that are large and have high priority, and display the determination result on the display / input device 181.

  The amount of power stored in an auxiliary power source such as a storage battery can be estimated from the voltage value of the storage battery, and the power consumption of each system can be calculated from the current value measured by each current sensor.

  In this Embodiment, the electric power which the said storage battery can supply can be grasped | ascertained by providing separately the means to measure the voltage value of the storage battery which is auxiliary power supply.

  In addition, when the auxiliary power source is a power generation device, a fuel cell, or a solar power generation device using an internal combustion engine, the power that can be supplied by the auxiliary power source can be grasped based on the rated output of these power generation devices.

  In the present embodiment, the display / input device 181 may display the time during which power can be supplied by the auxiliary power from the power that can be supplied by the auxiliary power and the power consumption of each system.

  In this case, if it is assumed that the operation of the refrigerator or a device that operates for 24 hours is assumed, the display / input device 181 can be assisted by turning off all the devices other than the refrigerator and the device operating for 24 hours. It is also possible to display a message that “the power can be supplied for another 5 hours” to prompt the user to save power.

  Further, in the present embodiment, apart from the priority order determined as described above, the user can set a system to be prioritized at the time of a power failure from the display / input device 181. When such a setting is made, According to the set priority order, it is also possible to determine a system that should prioritize power supply in the case of the power outage among the plurality of systems.

  As described above, according to the power supply system according to the present embodiment, it is possible to provide a power supply system that determines a system to which power should be preferentially supplied from the power consumption tendency of each system.

30 HEMS
36 CPU
38 ROM
40 RAM
42 I / O Port 44 Bus 46 Display Unit 48 Operation Unit 50 Memory 100 Power Supply System 110 Power Supply Switching Device 121 First System 122 Second System 123 Third System 131, 132, 133 Shutdown Device 141, 142, 143 Current Sensor 151 Living 151A Facsimile device 152 Dining 153 Kitchen 153A Refrigerator 161 Control device 171 Memory unit 181 Display / input device

Claims (7)

A plurality of systems connected to a commercial power source and other power sources, each supplied with power;
A plurality of measuring means provided in each of the plurality of systems, and measuring current values of the plurality of systems in time series,
Current value storage means for storing the current values of the plurality of systems each measured in time series by the plurality of measurement means;
Based on the time-series current values in each of the plurality of systems stored in the current value storage means, the attribute of the device connected to each of the plurality of systems is determined, and the plurality of systems When the power to be supplied is limited, according to the determined attribute of the device, a control unit that determines a system to which power supply should be given priority among the plurality of systems,
Display means for displaying a system to which the power supply determined by the control means should be prioritized;
Power supply system with Power supply switching means for supplying the power of the other power source to the plurality of systems instead of the commercial power source in the event of a power failure;
An input means capable of specifying a system to which power is supplied among the plurality of systems;
A plurality of switch means provided in each of the plurality of systems, for turning on or off the power supplied to the plurality of systems based on the operation of the input means;
Operation history storage means for storing a history of operations of the input means;
Further comprising
The control means detects a time when the power supply switching means is switched to supply power of the other power supply to the plurality of systems, and the time in each of the plurality of systems stored in the current value storage means. Used immediately before the power outage among the plurality of systems from the current value in the series and the time when the detected power source switching means switches to supply the power of the other power source to the plurality of systems. And identifying a system designated as a system to which power is supplied in the power failure immediately before the power failure from the operation history of the input means stored in the operation history storage unit. Connected to each of the system that was used immediately before the identified power outage, the system that is designated as the system that is supplied with power in the power outage immediately before the power outage, and the determined plurality of systems. Power feeding system according to claim 1, based on the attributes of the device, to determine lineage to be prioritized power supply when the power failure of the plurality of systems that.   The control means determines the maximum power consumption, the minimum power consumption, and the average power consumption in each of the plurality of systems based on current values in time series in each of the plurality of systems stored in the current value storage means. It is calculated and calculated from the current value in the time series measured continuously for 24 hours or more while determining that the refrigerator is connected to a system in which the difference between the calculated maximum power consumption and average power consumption is equal to or greater than a threshold value. It is determined that a device that operates for 24 hours is connected to a system whose minimum power consumption is not 0, and the device that operates for 24 hours is connected to the system that is determined to be connected to the refrigerator. It is designated as the system where power is supplied by the second largest point added to the system determined to be operated, the third largest point added to the system used immediately before the power failure, and the power failure immediately before the power failure. Power feeding system according to claim 2 for determining the system to be prioritized power supply when giving each a large point addition the fourth to the system, the sum of the point addition is a large system of the power failure.   The power supply system according to claim 3, wherein the control unit sets a system having the largest sum of the added points as a system in which power supply has the highest priority in the case of the power failure.   The control means includes a system having the largest sum of the added points, a system having the largest sum of the added points, a system having the second largest sum of the added points, or the sum of the added points depending on the time period of the power failure. The power feeding system according to claim 3, wherein the display means displays from the first system to a system having the third largest sum of added points as a system in which power supply is prioritized in the event of a power failure.   When the time at which a power failure is started and the time at which the power failure ends is known in advance, the control means can determine the power that can be supplied from the other power source, the time at which the power failure starts, and the power failure. Depending on the time between the end times, a system that can supply power during a power outage is determined from among the systems with a large sum of the added points, and the determination result is displayed on the display means. The power feeding system according to claim 4.   The other power source is at least one of a storage battery storing power supplied from the commercial power source, a vehicle storage battery of a vehicle capable of running with the power of the vehicle storage battery, a fuel cell, a power generation device using an internal combustion engine, and a solar power generation device. The power feeding system according to any one of claims 2 to 6, which is any one of them.

Images