JP6016499B2 - Power management system - Google Patents

Description

  The present invention relates to a power management system that prompts a user of power in each building to save power by displaying the rank of the power consumption of each building in an area where power is supplied in each building.

  A power monitoring system for comparing the power consumption of each house in the area has been proposed.

  For example, in the technique described in Patent Document 1, the user can grasp the tendency of the amount of electricity used at home by comparing the amount of electricity used at home with the amount of electricity used at other homes. There has been proposed a power monitoring system that makes it easy to obtain an index of actions to achieve the above.

JP 2008-92681 A

  However, the technique described in Patent Document 1 has a problem in that it does not prompt the user to save electricity because it does not display the rank of the amount of electricity used by each house in the area where power is supplied.

  The present invention has been made in consideration of the above facts. By displaying the ranking of the power consumption amount of each building in the area where the power is supplied in each building, the power user of each building can be displayed. An object is to provide a power management system that promotes power saving.

In order to achieve the above object, the invention described in claim 1 is characterized in that a main current measuring means for measuring a current value of power supplied from a system power to a distribution board of a building, and a current measured by the main current measuring means. A power calculation means for acquiring a value and calculating the power consumption amount of the building in association with the time when the current value is acquired from the acquired current value; and the power consumption amount calculated by the power calculation means for the consumption Transmitting means for transmitting to the information center via the communication network together with time information associated with the amount of power, and each building transmitted from each building in the distribution target area to which the building belongs via the communication network Receiving from the information center information on the rank of the power consumption of each building belonging to the distribution target area calculated by the information center based on the information on the power consumption of the current time and the time information associated with the power consumption. And means, and a display unit capable of displaying information received from said power calculation means is associated with the power consumption amount and digested costs electric energy of the building calculated time and the information center, the information center The power consumption amount of each building having the same associated time among the power consumption amounts of the buildings belonging to the distribution target area is totaled, and the total power consumption amount is equal to or greater than a predetermined threshold. The time is defined as the time when the peak time period starts, and the time when the aggregated power consumption becomes less than the predetermined threshold after the time when the peak time period begins is defined as the time when the peak time period ends. The power consumption amount ranking of each building belonging to the distribution target area is calculated in the peak time zone .

  According to the first aspect of the present invention, the main current measuring means measures the current value of the power supplied from the system power to the distribution board of the building.

  The power calculating means calculates the power consumption of the building based on the current value measured by the main current measuring means.

  The transmission means transmits the calculated power consumption of the building to the information center.

  The receiving unit receives, from the information center, information on the rank of the power consumption amount of each building belonging to the distribution target area calculated by the information center.

  The display means is a display device such as an LCD (Liquid Crystal Display) that displays the power consumption of the building and the information received from the information center, and displays information on the ranking of the power consumption of each building. Can be saved.

The information center may calculate the rank of the power consumption amount of each building belonging to the distribution target area in the peak time zone in which the total power consumption amount is equal to or greater than a predetermined threshold. As a result, power can be saved to users of each building during peak hours when power supply is tight.

According to a second aspect of the present invention, the information center distributes the start information of the peak time zone to each building belonging to the distribution target area at the time when the peak time zone starts, and the display The means further includes voice output means capable of outputting voice, and when the receiving means receives the notification of the start information of the peak time zone, the means displays the start of the peak time zone and outputs a warning sound. You may do it. This can notify the user that the peak time period has started.

According to a third aspect of the present invention, the information center receives information on the amount of power that can be supplied to the distribution target area from a supplier of the grid power, and can be supplied to the distribution target area. Based on the amount information, the power consumption amount of each building belonging to the distribution target area, and the time associated with the power consumption amount, the remaining power supply in the distribution target area is calculated by real-time processing, The calculated power supply surplus information in the power distribution target area is distributed to each building belonging to the power distribution target area, and the display means displays the power supply surplus power in the power distribution target area calculated by the real-time processing. You may do it. As a result, the user can recognize the remaining power supply capacity in the distribution target area, and can save power.

Further, as in the invention according to claim 4 , the current of the energization current to the power load means provided in each of the plurality of branch circuits included in the distribution board of the building and connected to the plurality of branch circuits, respectively. A plurality of branch circuit current measuring means for measuring a value, wherein the power calculating means obtains a current value measured by the plurality of branch circuit current measuring means, and power consumption of each branch circuit from the obtained current value The amount may be calculated in association with the time when the current value is acquired, and the display unit may further display the power consumption of each branch circuit and the time associated with the power consumption amount. As a result, the user can grasp the power consumption for each branch circuit and can determine the branch circuit to save power.

According to a fifth aspect of the present invention, the display means includes a first display means capable of displaying the power consumption of the building calculated by the power calculation means and the power consumption of each branch circuit. The receiving means may include second display means for displaying information received from the information center. This reduces the risk that the first display means will receive unauthorized access from the outside.

  As described above, according to the present invention, by displaying the ranking of the power consumption amount of each building in the area where the power calculated based on the power consumption amount of each building is supplied in each building, It is possible to provide a power management system that encourages users of power in each building to save power.

It is the schematic which shows an example of the power management 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 control system which concerns on embodiment of this invention. It is the figure which contrasted the power consumption amount in the distribution object area which the information center in the power management system which concerns on embodiment of this invention calculated, and the electric energy which can be supplied in the said distribution object area. It is a figure which shows an example of the order | rank of the power consumption displayed by the power management system which concerns on embodiment of this invention. It is a figure which shows an example of the power consumption in the time series of each building in the distribution object area displayed with the power management system which concerns on embodiment of this invention. It is a figure which shows an example of the power consumption in each branch circuit of each building displayed with the power management system which concerns on embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a power management system 100 according to the present embodiment.

  In FIG. 1, grid power supplied from a distribution facility 10 such as a power plant or substation of an electric power company is supplied to each of buildings 12A, 12B, 12C, and 12D. The buildings 12A, 12B, 12C, and 12D belong to an area where power is supplied from the same power distribution facility 10 (hereinafter, the area is referred to as a “distribution target area”).

  In FIG. 1, a solid line represents a power line related to power supply, and a broken line represents an information line such as a network on which information communication is performed.

  Moreover, in this Embodiment, since the structure of building 12A-12D is the same, hereafter, the power management system which concerns on this Embodiment is demonstrated centering on the structure of building 12A.

  In FIG. 1, the grid power is supplied to the distribution board 14 in the building 12A.

  The distribution board 14 is provided with a main current sensor 16 that measures the current value of the power supplied from the system power.

  In addition, the distribution board 14 distributes the power supplied from the system power for each of the plurality of branch circuits, and each branch circuit supplies power to the room 12A and a power load such as electrical equipment in the building 12A (not shown). Supply.

  Each of the plurality of branch circuits is provided with branch circuit current sensors 18A to 18J that measure the current value of each branch circuit.

  For the main current sensor 16 and the branch circuit current sensors 18A to 18J, the current value measured by the main current sensor 16 is acquired, and the power consumption of the building 12A is associated with the time when the current value is acquired from the acquired current value. The power calculation is performed by acquiring the current value measured by the branch circuit current sensors 18A to 18J, and calculating the power consumption amount of each branch circuit from the acquired current value in association with the time when the current value is acquired. The unit 20 is connected.

  Since the voltage of power supplied to the building is approximately 100 V, in this embodiment, a value obtained by multiplying the current value measured by the main current sensor 16 and the branch circuit current sensors 18A to 18J by 100 is calculated as the power consumption amount. .

  However, when voltage fluctuation is considered due to the characteristics of the connected power load, etc., a means for measuring the voltage is provided separately in the vicinity of the main current sensor 16 and in each branch circuit, and the voltage value measured by the means is The power consumption may be calculated by multiplying the current values measured by the main current sensor 16 and the branch circuit current sensors 18A to 18J.

  The power calculator 20 is connected to a home energy management system (HEMS) 30 that is an operation terminal by serial communication or the like.

  The HEMS 30 is connected to the information center 60 through a communication line 26 such as a broadband network, for example, and the power consumption calculated by the power calculation unit 20 is associated with the power consumption through the communication line 26. It is transmitted to the information center 60 together with the time information.

  The information center 60 receives power consumption associated with time from other buildings in the distribution target area to which the building 12A belongs, such as the building 12B, 12C, and 12D in addition to the building 12A. Based on the received power consumption, information on the rank of the power consumption of each building belonging to the distribution target area is calculated, and the calculated information on the rank of the power consumption is distributed to each building through the communication line 26.

  In the present embodiment, the information on the rank of the power consumption calculated by the information center 60 in the HEMS 30 may be received and displayed on the display unit of the HEMS 30, but as shown in FIG. Separately, an operation terminal 32 for displaying information may be provided, and information from the information center 60 may be received by the operation terminal 32 through a communication line 28 using a wired network or a wide area wireless network.

  Since the HEMS 30 controls the power supply of the building, if the control is hindered by unauthorized access from the outside, there is a risk of serious damage in some cases.

  In the present embodiment, reception of information through an external communication line is assigned to a terminal other than the HEMS 30 to reduce the risk of the HEMS 30 receiving unauthorized access from the outside.

  The operation terminal 32 is at least one of a receiving unit that can receive information from the information center 60, a display unit that can display information, and a touch panel, a keyboard, or a mouse for operating the operation terminal 32. For example, a device such as a personal computer or a portable information terminal can be used.

  FIG. 2 is a block diagram showing a schematic configuration of the HEMS 30 included in the power supply control system 100 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. The display unit 46 and the operation unit 48 are integrally configured, and the operation unit 48 may be applied with a touch panel provided on the display unit 46, or may include an operation button in addition to the touch panel. Good.

  The memory 50 executes a program for performing various controls relating to power supply in the building, a display control for displaying on the display unit 46, a program for controlling the distribution board 14, and the programs. Various kinds of information are stored, and the program stored in the memory 50 is expanded in the RAM 40 and executed by the CPU 36, thereby performing various controls relating to power supply in the building and control such as display control. It has become.

  Further, the network interface 24 for transmitting or receiving information is connected to the input / output port 62 via the power calculation unit 20 and the communication line 26.

  In FIG. 1, the information center 60 is also connected to a management center 62 of a power company that sequentially notifies the information center 60 of the power that can be supplied to the distribution target area through a separate communication line.

  The information center 60 uses the power that can be supplied to the power distribution target area notified from the management center 62 and the power consumption of each building received from each building, and the power supply and power consumption in the power distribution target area. It is possible to contrast with quantity.

  FIG. 3 is a diagram in which the amount of power consumed in the distribution target area calculated by the information center 60 in the power management system according to the embodiment of the present invention is compared with the amount of power that can be supplied in the distribution target area. .

  The information center 60 aggregates the power consumption amounts received at the same time from the power consumption amounts received from the buildings in the distribution target area, and graphs them.

  Various graph formats are possible, but based on the information on the amount of power that can be supplied acquired from the management center 62 and the power consumption associated with the time of each building transmitted from each building in the area, It is conceivable to display the result of calculating the remaining power supply capacity in the area by real-time processing.

  In FIG. 3, the upper limit of the amount of power that can be supplied to the distribution target area to which the building 12A belongs is expressed as 100%, and the aggregated power consumption is displayed as a percentage of the amount of power that can be supplied every hour.

  Therefore, it is possible to grasp the result of calculating the power supply surplus in the distribution target area by real-time processing from the difference between 100% and the value of the percentage of power consumption with respect to the amount of power that can be supplied.

  In addition, the information center 60 indicates that the time when the total power consumption of each building is equal to or greater than a predetermined threshold is the time when the peak time period in which the daily power consumption in the distribution target area becomes maximum starts. To do.

  Although various values can be assumed as the predetermined threshold, for example, it is conceivable that the predetermined threshold is about 80% of the amount of power that can be supplied to the distribution target area.

  The information center recognizes that the time when the total power consumption of each building is less than a predetermined threshold is the time when the peak time period ends.

  When the information center 60 determines that the peak time period has started, the information center 60 delivers a notification to that effect to each building in the distribution target area, and at each building, based on the received notification, at least a voice, text, or image Any one of them may be used to notify the user that the peak time period has started.

  For example, the start information of the peak time zone may be indicated by characters or images by displaying a graph colored in such a way that the peak time zone as shown in FIG. A speaker, a buzzer, or the like may be provided as a means capable of outputting the sound, and a warning sound may be output using the means.

  FIG. 4 is a diagram showing an example of the order of power consumption of each building in the power management system according to the present embodiment.

  The information center 60 aggregates the power consumption of each building in the distribution target area, and distributes it to each building in the distribution target area as a graph showing the ranking of each building as shown in FIG.

  Note that the ranking calculation shown in FIG. 4 may be started at the time when the above-described peak time period starts and until the time when the peak time period ends. In addition to the format shown in FIG. 4, a table showing the ranking of each building may be used. A graph of a normal distribution curve with the horizontal axis indicating the power consumption and the vertical axis indicating the number of buildings may be created. May indicate in which position of the graph.

  FIG. 5 is a diagram illustrating an example of power consumption in time series of the building 12A displayed in the power management system according to the present embodiment.

  The power consumption in the time series of the building shown in FIG. 5 is calculated by the power calculation unit 20 of the buildings 12A to 12D. The calculated power consumption is edited into a graph as shown in FIG. 5 in the HEMS 30 and displayed on the display unit 46 of the HEMS 30.

  In the present embodiment, the order of power consumption of each building is shown as shown in FIG. 4, thereby conserving power in each building.

  As a result, the power consumption of the building 12A in the peak time zone can be reduced as shown in FIG.

  Thus, according to the power management system according to the present embodiment, it is possible to reduce the amount of power used in the building by encouraging the user of the building to save power. It is also effective for overall power saving.

  In this embodiment, since the power consumption of each branch circuit is measured, the measured power consumption of each branch circuit can be displayed as a graph on the display unit 46 of the HEMS 30.

  FIG. 6 is a diagram illustrating an example of power consumption in each branch circuit in the building 12 </ b> A displayed by the power management system according to the present embodiment.

  When the user wants to further reduce the power consumption of his / her building by looking at the ranking of FIG. 4, the user can grasp a portion that protrudes and has a high power consumption by checking FIG. 6.

  FIG. 6 shows that the power consumption of the kitchen, the living room 2 or the living room 4 is high. For example, if there is no one in the living room 4 but the air conditioner is operating, By turning off the air conditioner in the room 4, the power consumption of the building can be reduced.

  The display of the horizontal axis in FIG. 6 is “kitchen (branch circuit B)”. However, if the kitchen is equipped with a microwave oven and lighting, “kitchen: microwave oven, lighting (branch circuit B)”. As such, the device connected to the branch circuit may be shown.

  In the present embodiment, the information center 60 calculates the power distribution target calculated based on the power consumption transmitted from each building in the power distribution target area and the power consumption of each building transmitted from each building in the power distribution target area. Stores the ranking of the power consumption of each building belonging to the area, and each building belonging to the distribution target area in advance based on the stored power consumption of each building and the ranking of the power consumption of each building belonging to the distribution target area The order of power consumption may be predicted.

  Furthermore, in this embodiment, when a building in the distribution target area can be supplied with power from a power source other than the system power, consumption of each building belonging to the distribution target area when power is supplied from the other power source. You may make it estimate the order | rank of electric energy.

  In this case, the information center 60 grasps in advance the power supply capability of the other power sources included in each building, grasps the power supply amount of the other power sources in each building, the stored power consumption amount, and the distribution target Based on the rank of the power consumption of each building belonging to the area, the rank of the power consumption of each building belonging to the distribution target area when receiving power supply from the other power source is predicted.

  As a power source other than the system power, a storage battery, a fuel cell, a power generation device using a gas engine, a solar power generation device, or the like that stores power supplied from the system power during normal times can be considered.

  Furthermore, the vehicle connection part (FIG. 12) in which the buildings 12A to 12D can electrically connect a vehicle such as EV (Electric Vehicle), HV (Hybrid Vehicle), or PHV (Plug-in Hybrid Vehicle) and the distribution board 14 to each other. If the power stored in the in-vehicle storage battery can be used in the building via the vehicle connecting portion, the in-vehicle storage battery of these vehicles may be used as another power source.

DESCRIPTION OF SYMBOLS 10 Power distribution equipment 12A, 12B, 12C, 12D Building 14 Distribution board 16 Main current sensor 18A-18J Branch circuit current sensor 20 Power calculation part 24 Network interface 26, 28 Communication line 30 HEMS
32 Operation terminal 36 CPU
38 ROM
40 RAM
42 I / O Port 44 Bus 46 Display Unit 48 Operation Unit 50 Memory 60 Information Center 62 Management Center 100 Power Management System

Claims (5)

A main current measuring means for measuring the current value of the power supplied from the grid power to the distribution board of the building;
Power calculating means for acquiring a current value measured by the main current measuring means and calculating the power consumption amount of the building in association with the time when the current value is acquired from the acquired current value;
Transmitting means for transmitting the power consumption calculated by the power calculating means to an information center via a communication network together with information on a time associated with the power consumption;
The information center calculates the power consumption of each building transmitted from each building in the distribution target area to which the building belongs via the communication network and the time information associated with the power consumption. Receiving means for receiving, from the information center, information on the rank of the power consumption of each building belonging to the distribution target area;
Display means capable of displaying the power consumption of the building calculated by the power calculation means, the time associated with the power consumption, and information received from the information center;
Equipped with a,
The information center totals the power consumption of each building having the same associated time among the power consumption of each building belonging to the distribution target area, and the total power consumption is a predetermined threshold value. The time when the peak time period starts is set as the time when the peak time period starts, and the time when the aggregated power consumption becomes less than the predetermined threshold after the time when the peak time period starts is set as the peak time period. A power management system that calculates the rank of the power consumption of each building belonging to the distribution target area in the peak time zone as an end time . The information center delivers start information of the peak time period to each building belonging to the distribution target area at the time when the peak time period starts,
The display means further includes an audio output means capable of outputting audio, and when the receiving means receives the start information of the peak time zone, displays the start of the peak time zone and outputs a warning sound. The power management system according to claim 1 . The information center receives information on the amount of power that can be supplied to the distribution target area from a supplier of the grid power, and information on the amount of power that can be supplied to the distribution target area and each building belonging to the distribution target area. Based on the power consumption and the time associated with the power consumption, a power supply surplus in the power distribution target area is calculated by real-time processing, and the calculated power supply surplus information in the power distribution target area is calculated. Deliver to each building belonging to the distribution target area,
The display means, the power management system of claim 1 or 2 displays the margin of the power supply in the power distribution target area calculated by the real-time processing. A plurality of branch circuit current measuring means provided on each of the plurality of branch circuits included in the distribution board of the building, and measuring a current value of an energization current to the power load means connected to each of the plurality of branch circuits; Prepared,
The power calculating unit acquires the current value measured by the plurality of branch circuit current measuring units, and calculates the power consumption amount of each branch circuit from the acquired current value in association with the time when the current value is acquired. ,
The display means, the power management system according the any one of displayable claim 1-3 the time associated with power consumption and digested costs power amount of each branch circuit. The display means includes
First display means capable of displaying the power consumption of the building calculated by the power calculation means and the power consumption of each branch circuit;
Second display means for displaying information received from the information center by the receiving means;
The power management system according to claim 4 comprising:

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