JP5952069B2 - Consumption monitoring system - Google Patents

Description

  The present invention relates to an energy consumption monitoring system.

  In recent years, energy and resource savings have been desired. From here, by setting the priority and operating current for each device connected to the power line and operating the newly requested device, if the total load current exceeds the predetermined current capacity, the low priority device There is a proposal to prevent the current consumed in the building from exceeding the contract power by stopping (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 03-245743

  However, it is not always possible to promote energy saving simply by managing power consumption so as not to exceed contract power.

  This invention is made | formed in view of the said subject, and aims at providing the consumption monitoring system which can accelerate | stimulate suppression of consumption of energy, such as electric power.

In order to achieve the above object, the invention of claim 1 sets a recommended power consumption, which is a target value of an upper limit of power consumption in each of a plurality of buildings, within a range allowed by system power, and the recommended power Notifying each of the plurality of buildings of the consumption amount, setting a consumption upper limit target power value that is a target value of the upper limit of power consumed in the monitoring area where the plurality of buildings exist, and setting the consumption upper limit target power value When the total power consumption value in the monitoring area exceeds the consumption upper limit target power value, the total power consumption value exceeds the consumption upper limit target power value. A consumption monitoring center that notifies the plurality of buildings of this, and a control unit that is provided in each of the plurality of buildings and includes a display unit that can display information notified from the consumption monitoring center.

  According to the first aspect of the present invention, the recommended power consumption of each of the plurality of buildings is set within a range allowed by the system power, and the recommended power consumption is notified to each of the plurality of buildings to call attention. To do. Thereby, energy consumption can be suppressed so as not to exceed the recommended power consumption.

Further, according to the invention described in claim 1, and sets the consumption upper limit target power value is a target value of the maximum power dissipated in the monitored area, consumption upper limit target total power consumption value in the monitored area When the power value is exceeded, a notice to that effect is given to a plurality of buildings to call attention. Thereby, energy consumption can be suppressed so as not to exceed the consumption upper limit target value.

The invention according to claim 2 is the invention according to claim 1 , wherein the control means provided in each of the plurality of buildings includes the upper limit target power value, the total power consumption value, the recommended power consumption and When the power consumption of the building is displayed on the display means and the power consumption of the building exceeds the recommended power consumption notified from the consumption monitoring center to the building, a predetermined priority order is set. Based on the above, the power load to be stopped in the building is displayed on the display means.

According to the second aspect of the invention, by setting the operation priority for each power load, when the total power consumption value exceeds the consumption upper limit target power value, the electric device with the low operation priority is provided. Inform. This facilitates selection of an electrical device to be stopped to reduce power consumption.

The invention according to claim 3 is the invention according to claim 1 or 2 , wherein the recommended power consumption of each of the plurality of buildings is the consumption upper limit target power value, and the past power use of each of the plurality of buildings. It is set for each of the plurality of buildings so as to be distributed based on the actual amount.

According to the third aspect of the present invention, the recommended power consumption in each building can be set based on the power that can be supplied to the monitoring area with a margin.

The invention according to claim 4 is the invention according to any one of claims 1 to 3 , wherein each of the plurality of buildings includes a human sensor, and the control means provided in each of the plurality of buildings includes: When it is determined that the building is unmanned from the result of detection by the human sensor, the consumption monitoring center is informed that the building is unmanned, and the consumption monitoring center is connected to the unmanned building. Shall supply a minimum amount of power, and for each manned building, the amount of power obtained by subtracting the minimum amount of power to be supplied to the unmanned building from the consumption upper limit target power value is set for the manned building. The recommended power consumption is calculated so as to be distributed to each manned building based on the past power consumption record.

According to the invention described in claim 4 , the minimum power is supplied to the building determined to be unmanned, and the recommended power consumption is set for the other manned buildings. Large recommended power consumption can be set for manned buildings with high demand.

The invention according to claim 5 is the invention according to any one of claims 1 to 4 , wherein when the plurality of buildings have a vehicle or a storage battery capable of supplying stored power to the monitoring area as an external power source , The consumption monitoring center notifies the building having the vehicle or the storage battery to supply surplus power of the vehicle or the storage battery to the monitoring area, and the informed building control means sends the surplus power to the monitoring area. It is determined whether or not supply is possible.

According to the invention of claim 5 , when the power supply in the monitoring area is tight, the building having a vehicle or storage battery capable of supplying power is notified to supply the power of the vehicle or storage battery to the monitoring area. The tight power supply in the monitoring area can be eased.

The invention according to claim 6 is the invention according to any one of claims 1 to 4 , wherein when the plurality of buildings have natural energy power generation means for generating power with natural energy as an external power source , the natural energy power generation means The building having the natural energy power generation means is notified so as to supply the generated power to the monitoring area, and the informed building control means uses the surplus power of the power generated by the natural energy power generation means to the monitoring area. It is determined whether or not supply is possible.

According to the invention described in claim 6, when the power supply in the monitoring area is tight, the power generated by the natural energy power generation means is generated in the building having the natural energy power generation means such as a solar power generation device or a wind power generation device. By notifying that the power is supplied to the monitoring area, the tight power supply in the monitoring area can be mitigated.

The invention according to claim 7 is the invention according to any one of claims 1 to 4 , wherein when the plurality of buildings have private power generation means as an external power source, the power generated by the private power generation means is monitored. The building having the private power generation means is notified so as to be supplied to the area, and the notified building control means determines whether or not surplus power generated by the private power generation means can be supplied to the monitoring area. To do.

According to the seventh aspect of the invention, when the power supply in the monitoring area is tight, the building having the private power generation means such as a fuel cell is notified to supply the power generated by the private power generation means to the monitoring area. By doing so, the tight power supply in the monitoring area can be eased.

The invention according to claim 8 is the invention according to any one of claims 5 to 7 , wherein the control means of the building having the external power supply supplies the surplus power to the monitoring area by a user operation. And controlling the external power source.

According to the invention described in claim 8 , after the user confirms that the power can be supplied to the monitoring area by the vehicle, the storage battery, the natural energy power generation means or the private power generation means provided in the building, the power supply is performed. As a result, it is possible to prevent the building that supplies power to the monitoring area from becoming insufficient.

  As described above, according to the invention described in claim 1, energy saving is promoted in each building by setting the recommended power consumption that is the target value of the upper limit of the power consumption in each of the plurality of buildings. And has an excellent effect that energy saving can be promoted.

In addition, according to the first aspect of the present invention, by notifying each building that the power supply in the monitoring area is tight, it is possible to encourage energy saving in each building and promote energy saving. According to the second aspect of the present invention, it is possible to select the power load to be stopped based on the priority order set under desired conditions, and it has an excellent effect that power saving can be achieved.

According to the invention of claim 3, based on the possible supply with a margin to the monitoring area power, you can set an upper limit of power that can be supplied to each building, in the invention according to claim 4, manned building It is possible to supply power with priority.

According to the inventions described in claims 5 , 6 , and 7, when the power supply in the monitoring area is tight, it is determined whether or not the power supply from each building is possible. Supply can be eased.

According to the invention described in claim 8 , since the power supply from each building to the monitoring area is based on the judgment of the user, it is possible to prevent the power of the building from being supplied to the monitoring area due to a malfunction by the device. .

It is the schematic of the consumption monitoring system which concerns on the 1st Embodiment of this invention. It is a schematic block diagram which shows the electric power supply to a distribution board. It is a single connection figure which shows the outline of the connection of a distribution board and an electric equipment. It is a schematic block diagram of HEMS which is a control apparatus. It is a schematic overview figure which shows an example of U / I of HEMS which is a control apparatus. It is a chart which shows an example of the priority for every electric equipment. (A diagram showing an example of total power consumption in a monitoring area. It is the schematic which shows an example of the floor plan of a building. It is a flowchart which shows the monitoring process which concerns on the 1st Embodiment of this invention. Each of (A) to (C) is a schematic diagram illustrating an example of display on the display according to the first embodiment. It is a flowchart which shows the external power supply use process which concerns on 2nd Embodiment. Each of (A) to (C) is a schematic diagram illustrating an example of display on the display according to the second embodiment.

[First Embodiment]
Hereinafter, the consumption monitoring system according to the first embodiment will be described with reference to the drawings. FIG. 1 shows a schematic configuration of a consumption monitoring system according to the present embodiment. In the present embodiment, power that is electric energy is applied as an example of energy resources, and power consumption in a region (hereinafter referred to as “monitoring region”) to which system power 12 is supplied via the region transformer 62. (Power consumption value) is monitored. The area transformer 62 converts the power supplied from the system power 12 into a voltage and current suitable for power transmission through the in-area power line 64.

  As the voltage and current in the in-region power line 64, a three-phase three-wire system 200V, a single-phase two-wire system 200V, a single-phase two-wire system 100V, or the like can be considered.

  In FIG. 1, the in-region power line 64 is an annular system having a section switch 66, but may be a dendritic system, a low-voltage banking system, or a regular network system.

  In the buildings 10A, 10B, and 10C in the monitoring area, the distribution board 14 is connected to the in-area power line 64, respectively.

  The consumption monitoring system 100 according to the present embodiment has a network 72 that connects the buildings 10A, 10B, and 10C in the area, and the network 72 and the in-area power line 64 monitor the power consumption in the area. Each building is provided with a monitoring center 82 that provides notification regarding power consumption in the area.

  The buildings 10A, 10B, and 10C in the monitoring area are configured so that vehicles 18A, 18B, and 18C such as EV, HV, and PHV can be connected to each other. Hereinafter, the configurations of the buildings 10A, 10B, and 10C and the vehicles 18A, 18B, and 18C will be described. However, the configurations of the buildings 10A, 10B, and 10C and the configurations of the vehicles 18A, 18B, and 18C are all the same. Therefore, the same reference numerals are used for explanation.

  First, as described above, the buildings 10A, 10B, and 10C are provided with the distribution boards 14 to which the system power 12 supplied from the electric power company is connected via the area transformer 62 and the in-area power line 64. The power from the grid power 12 is supplied into the buildings 10A, 10B, and 10C via the distribution board 14.

  The distribution board 14 is connected to home appliances 20 and residential equipment 22 that are power loads as a plurality of power supply destinations, and is supplied with power from the grid power 12.

  Furthermore, the buildings 10 </ b> A, 10 </ b> B, and 10 </ b> C may include a solar power generation device 16 or a wind power generation device 96 as an external power source other than the system power 12. Further, as an external power source, a fuel cell 90 may be provided, or a storage battery 92 that stores a surplus of the grid power 12 or the photovoltaic power generation device 16, the wind power generation device 96, or the fuel cell 90 may be provided.

  Further, it is possible to charge the vehicle storage battery 28 of the vehicles 18A, 18B, and 18C connected to the distribution board 14 via the vehicle connecting portion 26, and conversely, from the vehicle storage battery 28 to the distribution board 14. It is also possible to supply power to.

  The electric power taken out from the vehicle storage battery is a direct current, but is converted into 50 Hz or 60 Hz alternating current by a single-phase two-wire system 100V by an inverter (not shown) included in each vehicle, and via a vehicle connecting portion 26 described later. To the distribution board 14.

  The vehicle connecting portion 26 is a connector that electrically connects the distribution board 14 and the vehicle by being connected to the vehicle by a cable. The connector includes a power line terminal for supplying electric power from the distribution board 14 to the vehicle or supplying electric power of the vehicle to the distribution board 14, and a HEMS (Home Energy Management System) for managing and controlling energy in the building. ) You may have the terminal of the information line concerning communication with 30 and vehicles.

  The vehicle connecting portion 26 supplies power to the vehicle under the control of the HEMS 30 and charges the vehicle storage battery 28. Moreover, the vehicle connection part 26 supplies the electric power by having discharged the storage battery for vehicles to the distribution board 14 according to control of HEMS30.

  Further, the HEMS 30 monitors the current between the vehicle connecting portion 26 and the vehicle connected to the vehicle connecting portion 26, and the vehicle storage battery 28 is charged via the vehicle connecting portion 26, or for the vehicle. It is grasped whether the electric power of the vehicle is supplied to the distribution board 14 by the discharge of the storage battery 28.

  As shown in FIG. 2, distribution boards 14 are provided in the buildings 10 </ b> A to 10 </ b> C, and the system power 12 drawn from the outside is supplied to the distribution board 14 via an integrating wattmeter (not shown). Supplied. The power generated in the buildings 10A to 10C, such as the power generated by the solar power generator 16, the power generated by the wind power generator 96, the power generated by the fuel cell, the discharge power of the storage battery 92, and the discharge power from the vehicle 18A, It is possible to use (consume) in the building 10 by being converted to the voltage, frequency, and phase of the system power 12 and supplied to the distribution board 14.

  The electric power supplied from the vehicle storage battery 28 of the vehicle can be converted by the inverter of the vehicle as described above. The power supplied from the fuel cell 90 or the storage battery 92 is converted into alternating current having the same voltage, frequency and phase as the system power 12 by conversion means such as an inverter (not shown) provided in each of the distribution panels 14. You may make it supply to.

  Further, in the configuration of FIG. 2, the power of the power source is used in the electrical equipment in the buildings 10 </ b> A to 10 </ b> C, or so-called power sale is performed to supply the grid power 12.

  As shown in FIG. 3, the distribution board 14 is provided with a main breaker (main switch) 34, and the grid power 12 is supplied to the primary side of the main breaker 34. As this main breaker 34, the thing of the interruption | blocking capacity | capacitance according to contract electric power is applicable. Moreover, as the main breaker 34, the thing of the interruption | blocking capacity | capacitance set according to the total capacity | capacitance of the electrical load in the building 10 is also applicable.

  A plurality of branch breakers 36 are provided in the distribution board 14, and each primary side of the branch breakers 36 is connected to the secondary side of the main breaker 34. Each branch breaker 36 is connected to an electrical device provided in the building 10. In addition, each of the electric devices provided in the building 10 is connected to one of the branch breakers 36.

  As a result, in the building 10, electric power including the system power 12 is supplied to each of the electric devices via the main breaker 34 and the branch breaker 36. The building 10 according to the present embodiment is supplied with a single-phase three-wire system power of 100 V / 200 V, and each electric device has a voltage (100 V or 200 V) corresponding to the rated voltage for each electric device. Is supplied.

  Here, the lighting fixture 32 provided in the building 10 is connected to the branch breaker 36A. Thereby, the lighting fixture 32 in the building 10 can be turned on by turning on (closing) the main breaker 34 and the branch breaker 36A. Here, one branch breaker 36 </ b> A is used for the lighting fixture 32, but a plurality of branch breakers 36 </ b> A are used according to the total capacity of the lighting fixture 32.

  A general-purpose outlet (not shown) provided in the buildings 10A to 10C is connected to the branch breaker 36B. Various electric appliances including the refrigerator 3838 provided in the buildings 10A to 10C are connected to the general-purpose outlet, and thereby electric power is supplied to the electric appliances.

  Furthermore, in the building 10, an outlet to which the air conditioner 94 is connected, a dedicated outlet for the charger / discharger 92 </ b> A of the storage battery 92, a vehicle connection unit 26, and a dedicated outlet for supplying power to the fuel cell 90 are provided. In this case, each branch outlet is connected to a different branch breaker 36C. In addition, the structure which provided the hand switch in the vicinity of each electric equipment instead of a dedicated outlet may be used.

  By the way, as shown in FIG. 2, the buildings 10 </ b> A to 10 </ b> C are provided with a HEMS 30 that manages energy consumption of the buildings 10 </ b> A to 10 </ b> C. It also has a function of controlling charging / discharging to 92 and the like. In the following, the HEMS 30 that is a control device is provided separately from the distribution board 14, but the distribution board 14 and the HEMS 30 may be integrated.

  As shown in FIG. 4, the HEMS 30 includes a CPU 44A, a RAM 44B, a ROM 44C, and an HDD 44D, and includes a microcomputer having a general configuration in which these are connected to a bus 44E. Various programs and data are stored in the ROM 44C and the HDD 44D used as the storage means, and the CPU 44A performs various processes by executing the programs stored in the ROM 44C and the HDD 44D. At this time, the RAM 44B is used as a work memory.

  The HEMS 30 is provided with a network interface (NET I / F) 46, and the network I / F 46 is connected to a public line network such as the Internet or a dedicated line network, so that the HEMS 30 is connected to a predetermined host server 84. (See also FIG. 2). Thus, the HEMS 30 can transmit preset data to the host server 84 in the monitoring center 82 and acquire various data from the host server 84.

  The HEMS 30 is provided with a U / I (user interface) 50. As shown in FIG. 5, the U / I 50 is provided with a display 52A serving as a display means, a power switch 52B, a menu switch 52C, a speaker 52D, and the like. The display 52A is a touch panel type using an LCD, and by touching the display surface with various displays (hereinafter referred to as “operation”), a UI (user interface) displayed on the display 52A is displayed. Various information input operations can be performed.

  As shown in FIG. 4, the U / I 50 is connected to the bus 44E. As a result, the CPU 44A displays various types of information on the display 52A of the U / I 50. In addition, the CPU 44A displays a preset UI on the display 52A, and various information can be input by a touch operation corresponding to the display. In addition, as HEMS30, arbitrary structures, such as providing U / I50 separately including display 52A and connecting U / I50 to HEMS30, are applicable.

  On the other hand, as shown in FIG. 3, the distribution board 14 is provided with a switch 54 and a current sensor 56 as one of detection means on the secondary side of the branch breaker 36 </ b> A for the lighting fixture 32. Thereby, the current consumption of the lighting fixture 32 is detected by the current sensor 56, and the power supply to the lighting fixture 32 is collectively turned on / off (energized / cut off) by the switch 54. The switch 54 and the current sensor 56 are connected to the HEMS 30.

  As shown in FIG. 4, the HEMS 30 is provided with an input / output interface (input / output I / F) 58, and a driver 60 and an A / D converter 60 are connected to the input / output I / F 58. A switch 54 is connected to the driver 60, and a current sensor 56 is connected to the A / D converter 60. Thereby, the CPU 44A can detect the power value (W or kW) consumed by the lighting fixture 32 from the input signal from the current sensor 56, and operates the switch 54 as necessary to perform illumination. The appliance 32 can be turned off (the power supply is cut off).

  A communication unit 48 is provided in the HEMS 30. Each electric device provided in the building according to the present embodiment and the HEMS 30 can transmit and receive data and control signals by wireless communication, for example. Each electrical device provided in the building transmits whether or not it is operating and power consumption during operation via communication means such as wireless communication. Thereby, in HEMS30, the operational state (whether it is operating) of each electric appliance in a building and detection of power consumption are attained.

  In addition, each electric appliance is stopped by a control signal input from the HEMS 30 via the communication unit 48. CPU44A transmits the control signal which stops operation | movement to an electric equipment as needed, and, thereby, a corresponding electric equipment stops operation | movement.

  Note that the connection between the HEMS 30 and each electrical device is not limited to wireless communication, and any communication method such as communication via a power line or communication via an indoor network using communication lines installed in the buildings 10A to 10C may be applied. Can do. The HEMS 30 is also connected to the solar power generation device 16, the wind power generation device 96, the fuel cell 90, the storage battery 92 charging device, the vehicle connection unit 26, and the like. Is controlled.

  The HEMS 30 calculates a total power consumption value (hereinafter referred to as “total power consumption Pc” (kW)) that is the total amount of power consumed in the building where the machine is installed, and the total power consumption Pc. By comparing the recommended power consumption Pr notified from the monitoring center 82, it is monitored whether or not the total power consumption Pc is within the recommended power consumption Pr.

  Further, the HEMS 30 can set a priority order of operations for each electrical device (hereinafter referred to as “priority order”) predetermined by the user by displaying a predetermined UI on the display 52A.

  The HEMS 30 allows each user to input device information including at least priority for use and information for identifying the electric device (hereinafter, “device ID” as an example) for each electric device used in the building. The electrical equipment is registered. As the device ID included in the device information, a unique code is used for each electrical device that enables the HEMS 30 to identify the electrical device. Any known configuration can be applied to such a code.

  The HEMS 30 communicates with each electric device by using the device ID, thereby grasping whether or not the corresponding electric device is in operation, power consumption during operation, and stopping the electric device when the electric device is stopped. Used to identify equipment.

  FIG. 6 shows an example of priorities input as device information. In this priority order, the lighting fixture 32 and the refrigerator 38 are set to level 1 where the operation is given the highest priority, and the lighting of the building is turned off at night or the refrigerator 38 is prevented from functioning due to a power failure. ing.

  Further, the storage battery 92 (the charger / discharger 92A of the storage battery 92), the vehicle 18 (the vehicle connecting portion 26), and the like are set at level 2 as the next priority. Further, an air conditioner 94 or the like is set at level 4 having the lowest priority. Furthermore, in level 3, it is possible to set AV appliances such as televisions and stereos, home appliances around the kitchen such as microwave ovens, toasters, and electric rice cookers.

  In addition, for example, when there are a plurality of electric devices of the same type such as air conditioners 94 installed in a plurality of rooms, the priority order may be set for each electric device. A priority order may be set.

  Note that the priority order of the electrical equipment may be stored as a default priority order for each electrical equipment, and this default priority order may be used. It may be changed for each or each electric device. Further, here, the priority is set to four levels from level 1 to level 4, but it may be configured such that the priority can be set finely by setting at least two levels or more and four levels or more.

  Various information notified from the monitoring center 82 can be displayed on the display 52 </ b> A of the HEMS 30. For example, when the total power consumption value in the monitoring area exceeds the consumption upper limit target power value that is the target value of power consumed in the monitoring area, the monitoring center 82 notifies that to each building in the monitoring area. Inform. The HEMS 30 of each building notifies the user that the total power consumption value in the monitoring area has exceeded the consumption upper limit target power value (hereinafter sometimes referred to as “excessive power consumption”) on the display 52A.

  At this time, when the total power consumption Pc of the building where the HEMS 30 is installed exceeds the recommended power consumption Pr, the HEMS 30 is operating as an electrical device that is stopped to suppress power consumption. The electric device having the lowest priority is displayed on the display 52A. When notifying excessive power consumption, various configurations that allow at least users in the building to recognize excessive power consumption can be applied together with the display on the display 52A. In this case, a voice or an alarm may be emitted from the speaker 52D provided in the recognition HEMS 30, and it may be possible to select whether or not to issue a voice or an alarm.

  The monitoring upper limit target power value, which is the target value of power consumed in the monitoring area, is set by the monitoring center 82 within a range allowed by the system power 12. As an example, about 80% of the maximum limit of power that can be supplied to the monitoring area can be considered as the consumption upper limit target power value.

  The recommended power consumption Pr in each building monitors the consumption upper limit target power value, which is the target value of power consumed in the monitoring area, based on the past power consumption results in each building in the monitoring area. The center 82 is set by distributing. Accordingly, the recommended power consumption Pr that is larger than the buildings that have been low in power consumption in the past is set in the buildings that have been high in power consumption in the past. In addition, in order to statistically extract the past power consumption results of each building in the monitoring area, for example, the average value of the consumption performance of each building in the last week, the last 10 days, or the last month is used. Based on this, etc. are considered.

  In the present embodiment, each building may be provided with a human sensor, and the HEMS may determine the presence or absence of a person in the building from the detection result of the human sensor.

  Further, if the HEMS 30 determines that the building is unmanned, the determination result is transmitted to the monitoring center 82, and the monitoring center 82 supplies minimum power to the unmanned building. For certain buildings, the power that is obtained by subtracting the minimum power supplied to unoccupied buildings from the upper limit target power consumption value is calculated based on the past power consumption of each manned building. The recommended power consumption may be determined to be distributed to each.

  The human sensor can use a known detection method using infrared rays, ultrasonic waves, or visible light, and the minimum power supplied to a building that is determined to be unattended is the standby state of the electrical equipment in the building. Suppose you can afford electricity.

  FIG. 7 shows an example of the total power consumption in the monitoring area. In FIG. 7, the maximum limit of power that can be supplied to the monitoring area is 3 MW, and 2.4 MW, which is 80%, is set as the consumption upper limit target power value. In FIG. 7, since the total power consumption exceeds the power consumption upper limit target power value at 7 o'clock and 18:00 to 19:00, the monitoring center 82 sends the total in the monitoring area to each building in the monitoring area at that time. Notifies that the power consumption value has exceeded the consumption upper limit target power value.

  Note that the device information that can be input from the display 52A can include installation locations in the buildings 10A to 10C. When the installation location is included in the device information, the HEMS 30 displays a UI for inputting the installation location in the building 10 for each electrical device on the display 52A. The installation location may be input, for example, by registering a floor plan in the building 10, displaying the floor plan (floor plan) on the display 52A, and inputting the position of each electrical device.

  FIG. 8 shows an example at this time. In FIG. 8, only a part of the electric equipment is illustrated. As shown in FIG. 8, in a building 10A, for example, a lighting device 32, an air conditioner 94, and a household electrical appliance (not shown) such as a television are arranged in a living room 68A, and the lighting device 32, A refrigerator 38 and the like are arranged. At this time, for example, if the air conditioner 94 is also provided in the Japanese room 68B, the air conditioner 94 (94A) in the living room 68A and the air conditioner 94 (94B) in the Japanese room 68B are input so as to be identified. In addition, although it demonstrates so that the position of an electric equipment may be specified on FIG. 8, it is not restricted to this, As long as a user can specify the installation position of an electric equipment, it specifies a living room, such as a living room name. Arbitrary configurations such as using information to be applied can be applied.

  When the priority order for each electrical device is set based on the input device information for each electrical device, the HEMS 30 of the present embodiment registers the electrical device by storing it in the HDD 44D together with the priority order. When the installation position of the electrical device is included in the device information, the electrical device is registered including the installation location. The HEMS 30 monitors the power consumption with respect to the recommended power consumption Pr and notifies the monitoring result based on the registered contents of each electric appliance.

  Hereinafter, the control of the monitoring process executed by the HEMS 30 when it is notified that the total power consumption in the monitoring area has exceeded the consumption upper limit target power value in the present embodiment will be described.

  FIG. 9 shows an overview of the monitoring process according to the first embodiment. In this flowchart, it is executed at a preset time interval (for example, about 1 to 10 minutes), and in a first step 110, the total power consumption Pc in the building is calculated.

  In the present embodiment, the power consumption of the lighting fixture 32 can be detected by reading the current value detected by the current sensor 56. At the same time, the HEMS 30 communicates with each electric device to identify the electric device in operation and detect the power consumption value (hereinafter referred to as “power consumption”) of the identified electric device. In addition, the detection of the power consumption of each electric appliance excluding the lighting fixture 32 may be calculated by detecting the current consumption using a current sensor provided in each branch circuit of the distribution board 14. You may detect using the wattmeter provided in the primary side of the switchboard.

  In step 110, the current total power consumption Pc in the building is calculated from the detected power consumption. In step 112, the calculated total power consumption Pc is compared with the recommended power consumption Pr notified from the monitoring center 82. It is determined whether or not the total power consumption Pc exceeds the recommended power consumption Pr.

  Here, when the total power consumption Pc is equal to or less than the recommended power consumption Pr (Pc ≦ Pr), a negative determination is made in step 112, and the process proceeds to step 114, where the recommended power consumption Pr and the total power consumption Pc are displayed on the display 52A. indicate. In the next step 118, the total power consumption Pc is stored in the HDD 44D as a history.

  In FIG. 9, the total power consumption Pc is detected at a preset time interval, and it is confirmed whether or not the detected total power consumption Pc exceeds the recommended power consumption Pr. For example, whether or not the total power consumption Pc exceeds the recommended power consumption Pr by comparing the recommended power consumption Pr while continuously detecting the total power consumption Pc (detecting an instantaneous value), for example. Any configuration that compares the total power consumption Pc and the recommended power consumption Pr can be applied.

  FIG. 10A shows a display screen 74 as an example of display on the display 52A. On this display screen 74, the recommended power consumption Pr set for the building is displayed, and the total power consumption Pc calculated at that time is displayed. By viewing the display on the display 52A, the user can check how much power is consumed at that time and can recognize the difference between the total power consumption Pc and the recommended power consumption Pr.

  In contrast, if the total power consumption Pc exceeds the recommended power consumption Pr (Pc> Pr), in the flowchart shown in FIG. In step 118, the priority order registered for each of the operating electrical devices is read, and the electrical device with the lowest priority is selected. At this time, if there are a plurality of electrical devices with the corresponding priority, each electrical device is selected. In step 120, it is confirmed whether or not an electric device with a low priority is operating.

  Here, if the level 3 or level 4 electrical device whose priority is lower than level 2 or level 2 is operating, an affirmative determination is made in step 120 and the process proceeds to step 122. In step 122, the display 52A is displayed to notify the user that excessive power consumption has occurred with the total power consumption Pc exceeding the recommended power consumption Pr. At the same time, by displaying the selected electric device on the display 52A, the electric device to be stopped in order to reduce power consumption is presented.

  FIG. 10B shows a display screen 76 as an example at this time. On this display screen 76, a message 78 indicating that the total power consumption Pc exceeds the recommended power consumption Pr is displayed. The display screen 76 displays a message 80 that suggests that the selected device be stopped. At this time, 94B is operating, and since the priority of the air conditioner 94 is the lowest among the operating electric devices, a message 80 recommending that the air conditioner 94 be stopped is displayed on the display screen 76. .

  On the display screen 76, a confirmation button 80A is displayed for the message 80. Thereby, the user who has seen the display on the display 52A can operate (touch) the confirmation button 80A to instruct to stop the presented electrical device (acknowledge the stop).

  Here, two messages 78 and 80 are displayed. However, the present invention is not limited to this. For example, only the message 78 is displayed first, and the screen is displayed so that the message 80 is displayed at a predetermined timing. It may be switched. Further, by performing an operation such as touching the display of the electric device on the display 52A, the floor plan (see FIG. 8) of the building 10 is simplified and displayed on the display 52A, and the installation position of the electric device is clearly indicated. May be. The simplified display at this time may be any display as long as the user can specify the installation position of the electric device.

  FIG. 10B shows the case where there is one selected electrical device, but when there are a plurality of electrical devices of the same level, each may be displayed on the display 52A. FIG. 10C shows a display screen 76A as an example at this time. In this display screen 76A, since two “air conditioners A” and “air conditioners B” (for example, air conditioners 94A and 94B) are operating, messages 82A and 82B recommending that these air conditioners 94A and 94B be stopped. , 82C are displayed. At this time, the confirmation buttons 82D and 82E are displayed for each displayed electric device so that the electric devices to be stopped can be individually specified. However, the stop may be instructed with one confirmation button.

  In addition, in step 122 of FIG. 9, in addition to the display on the display 52A, the display content may be notified by voice from the speaker 52D, or an alarm indicating that an excessive power consumption is displayed may be issued.

  In the next step 124, it is confirmed whether or not the confirmation button 80A displayed on the display 52A has been operated (whether or not stop has been instructed), and in step 126, a message 80 or the like is displayed on the display 52A for a predetermined time. Check whether or not.

  Here, when the confirmation button 80A is operated, an affirmative determination is made in step 124, and the process proceeds to step 128. If the confirmation button 80A is not operated even after the predetermined time has elapsed, an affirmative determination is made at step 126 and the routine proceeds to step 116.

  In step 128, the electric device (here, air conditioner 94) displayed on the display 52A and recommended to stop is stopped. Thereafter, the process proceeds to step 116. At this time, the total power consumption Pc that has caused excessive power consumption may be stored.

  In addition, although the displayed electrical device is stopped by the user confirming the display on the display 52A, the displayed electrical device may be stopped without performing the user confirmation. In addition, when a priority is further set between electric devices having the same priority and a plurality of electric devices are displayed as electric devices having a low priority, the priority is low among the displayed electric devices. You may make it stop an electric equipment in order. At this time, the total power consumption Pc is calculated every time the electric device is stopped, and when the total power consumption Pc becomes equal to or less than the recommended power consumption Pr (Pc ≦ Pr), the operation of the next electric device is stopped. You may make it cancel.

[Second Embodiment]
Next, a second embodiment of the present invention will be described. Since the configuration of the second embodiment is the same as that of the first embodiment, a detailed description thereof will be omitted, and the external power supply use process shown in FIG. 11 will be described.

  FIG. 11 shows an outline of the external power source use process according to the second embodiment. This flowchart relates to processing of using an external power source in each building when the total power consumption of the monitoring area from the monitoring center 82 exceeds the consumption upper limit target power value and the power supply and demand is tight.

  In the present embodiment, the monitoring center 82 knows what external power source is provided in each building and supplies surplus power to a building having an external power source capable of supplying power to the monitoring area. The HEMS 30 of the notified building performs the processing shown in FIG.

  In step 210 of FIG. 11, the power Pg that can be supplied from an external power source such as the solar power generation device 16, the fuel cell 90, the storage battery 92, or the wind power generation device 96 is grasped.

  If the power Pg that can be supplied from the external power source is the solar power generation device 16 that is a natural energy power generation means, the fuel cell 90 that is a private power generation means is based on the rated output based on the current power generation capacity based on the amount of solar radiation. Thus, the vehicle storage battery and the storage battery 92 can be grasped on the basis of the current voltage value, and the wind power generation device 96 that is a natural energy power generation means can be grasped on the basis of the current power generation capability by wind power.

  In the following step 212, the total power consumption Pc in the building is calculated. In the present embodiment, the power consumption of the lighting fixture 32 can be detected by reading the current value detected by the current sensor 56. At the same time, the HEMS 30 communicates with each electric device to identify the electric device in operation and detect the power consumption value (hereinafter referred to as “power consumption”) of the identified electric device. In addition, the detection of the power consumption of each electric appliance excluding the lighting fixture 32 may be calculated by detecting the current consumption using a current sensor provided in each branch circuit of the distribution board 14. You may detect using the wattmeter provided in the primary side of the switchboard.

  In step 212, the total power consumption Pc at that time in the building 10 is calculated from the detected power consumption. In step 214, the calculated total power consumption Pc is compared with the power Pg that can be supplied from the external power source. It is determined whether or not the power Pg that can be supplied exceeds the total power consumption Pc.

  Here, when the power Pg that can be supplied from the external power source exceeds the total power consumption Pc (Pg> Pc), an affirmative determination is made in Step 214 and the process proceeds to Step 216, where the power Pg that can be supplied from the external power source and The total power consumption Pc is displayed on the display 52A, and the difference between the power Pg that can be supplied by the external power supply and the total power consumption Pc is set as surplus power, and an instruction to supply the surplus power in the monitoring area is displayed.

  FIG. 12A shows a display screen 74A as an example of display on the display 52A. In this display screen 74A, the total power consumption Pc in the monitoring area, the power generation capacity of the external power source of the building 10A, and surplus power that can be supplied to the area are displayed. The user can check how much surplus power is present at that time by looking at the display on the display 52A, and can operate the touch button 80F to supply surplus power to the area.

  In the next step 218, it is determined whether or not the user has instructed the supply of surplus power from the HEMS 30 to the monitoring area. If the determination is affirmative, the surplus power is supplied to the monitoring area in step 220. Each external power supply and distribution board 14 are controlled.

  If a negative determination is made in step 218, it is determined in step 224 whether or not a predetermined time has elapsed from the message display in step 216. If the predetermined time has elapsed, surplus power is supplied into the monitoring area. Without proceeding, the procedure is shifted to step 222.

  In step 222, the calculated total power consumption Pc, the power Pg that can be supplied by the external power supply, and the surplus power calculated as the difference between them are stored in the HDD 44D as a history.

  If a negative determination is made in step 214, it is determined in step 226 whether PHV or HV is included in the external power source. The type of the external power source is specified by the HEMS 30 communicating with each external power source. In the present embodiment, communication via the vehicle connecting unit 26 may be performed, or the type of the external power source may be specified separately via wireless communication means.

  In the following step 228, it is determined whether or not the electric power that can be supplied from the vehicle exceeds the total power consumption Pc when the vehicle engine such as PHV or HV having the power generation capability is operated. At 230, the engine of the vehicle is started and an instruction to supply surplus power into the monitoring area is displayed.

  FIG. 12B shows a display screen 74B as an example at this time. This display screen 74B displays a message that surplus power is generated when the vehicle engine is started and whether surplus power generated by starting the vehicle engine is supplied to the area.

  The user can supply surplus power to the monitoring area by operating (touching) the confirmation button 80G.

  The electric power that can be supplied from the vehicle when the engine is operating may be determined based on the rated output of the vehicle. In the present embodiment, it is assumed that the HEMS 30 stores in advance the rated output of the vehicle connected to the vehicle connection unit 26 of the building in the HDD 44D.

  After step 230, the procedure proceeds to step 218, and it is determined whether or not an instruction to supply surplus power into the monitoring area has been made by an operation from the user.

  If a negative determination is made in step 226 or step 228, no surplus power is generated even when the engine is started. Therefore, in step 232, a display instructing to use an external power source is performed. The procedure moves to step 222.

  FIG. 12C shows a display screen 74C as an example at this time. On this display screen 74C, the shortage of power in the building 10A is displayed, and a message as to whether or not to use an external power source such as a vehicle, a storage battery, a fuel cell, a solar power generation device, or a wind power generation device is displayed.

  The user can use the power of the external power source by operating (touching) the confirmation button 80H.

  As described above, in the present embodiment, when the power consumption in the monitoring area is tight, it is determined whether or not the power of the external power source of each building has a surplus. It is possible to supply surplus power of each building in the monitoring area, thereby reducing power supply and demand in the tight monitoring area.

  In the present embodiment, the monitoring center 82 notifies the building having the external power supply that the external power supply is supplied to the monitoring area. However, without such notification, the total power consumption in the monitoring area is consumed. You may make it alert | report to each building only that the upper limit target electric power value was exceeded.

  The HEMS 30 of the building that has received the notification may perform the processing of FIG. 11 and supply surplus power to the monitoring area when an external power source that can be used in the building is provided.

  Further, in the present embodiment, when PHV or HV having power generation capability is included in the external power source, when surplus power can be generated by starting those engines, the surplus power is included in the monitoring area. It is also possible to supply.

  In the present embodiment, it has been described that various messages are displayed on the display 52A so as to notify the user. However, the present invention is not limited thereto, and the user may notify the message by voice or an alarm. Various notification means that can be easily recognized can be applied.

  Furthermore, the configuration and control of the present embodiment described above are merely examples, and the present invention is not limited to the above, and can be variously modified and implemented without departing from the spirit of the present invention. Of course.

10A, 10b, 10C Building 12 System power 14 Distribution board 16 Solar power generator (natural energy power generation means)
18A, 18B, 18C Vehicle 20 Home appliance (electric power load)
22 Housing equipment (electric power load)
28 Vehicle storage battery 30 HEMS (control means)
34 Main breaker 36 Branch breaker 36A, 36B, 36C Branch breaker 50 U / I
52A Display 56 Current sensor 74 Display screen (display means)
82 Monitoring Center 90 Fuel cell (in-house power generation means)
92 Storage battery 96 Wind power generator (natural energy power generation means)
100 Consumption monitoring system

Claims (8)

A recommended power consumption that is a target value of the upper limit of power consumption in each of the plurality of buildings is set within a range allowed by system power, and the recommended power consumption is notified to each of the plurality of buildings , Setting a consumption upper limit target power value that is a target value of an upper limit of power consumed in the monitoring area where the plurality of buildings exist, informing the consumption upper limit target power value to each of the plurality of buildings, and the monitoring area When the total power consumption value exceeds the consumption upper limit target power value, the consumption monitoring center that notifies the plurality of buildings that the total power consumption value exceeds the consumption upper limit target power value When,
Control means provided in each of the plurality of buildings, and having display means capable of displaying information notified from the consumption monitoring center;
Consumption monitoring system including. The control means provided in each of the plurality of buildings displays the consumption upper limit target power value, the total power consumption value, the recommended power consumption and the building power consumption on the display means, and When the power consumption exceeds the recommended power consumption notified from the consumption monitoring center to the building, based on a predetermined priority order, the power load to be stopped in the building is displayed on the display means. The consumption monitoring system according to claim 1 to display. The recommended power consumption of each of the plurality of buildings is set for each of the plurality of buildings so that the consumption upper limit target power value is distributed based on the past power consumption results of each of the plurality of buildings. The consumption monitoring system according to claim 1 or 2 . Each of the plurality of buildings includes a human sensor,
The control means provided in each of the plurality of buildings notifies the consumption monitoring center that the building is unmanned when it is determined that the building is unmanned from the result of detection by the human sensor. ,
The consumption monitoring center shall supply a minimum amount of power to the unmanned building, and a minimum amount of power to be supplied to the unmanned building from the consumption upper limit target power value for a manned building. the reduced amount of power, either so as to dispense to each building in the manned on the success of past power usage of each building in the manned of claims 1 to 3, for calculating the recommended power consumption The consumption monitoring system according to claim 1. When the plurality of buildings have a vehicle or a storage battery that can supply the stored power to the monitoring area as an external power source , the consumption monitoring center supplies surplus power of the vehicle or the storage battery to the vehicle or the building having the storage battery. The consumption according to any one of claims 1 to 4 , wherein a notification is made so as to supply the monitoring area, and the control means of the notified building determines whether or not surplus power can be supplied to the monitoring area. Monitoring system. When the plurality of buildings have natural energy power generation means for generating power with natural energy as an external power source, the building having the natural energy power generation means is notified so as to supply the power generated by the natural energy power generation means to the monitoring area. and, wherein the notified control unit building, according to any one of the renewable energy power unit according to claim 1 determines whether or not it is possible to supply to the monitoring area surplus power of electric power is generated 4 Consumption monitoring system. When the plurality of buildings have private power generation means as an external power source, the building having the private power generation means is informed so as to supply the power generated by the private power generation means to the monitoring area, and The consumption monitoring system according to any one of claims 1 to 4 , wherein the control unit determines whether or not surplus power generated by the private power generation unit can be supplied to the monitoring region. Control means for building with the external power source, the operation of the user, consumption monitoring system according to any one of claims 5-7 for controlling the external power supply to supply the surplus power to the monitoring area .