JP2013078177A - Electric power accommodation system, demand control device, demand control method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electric power accommodation system capable of achieving accommodation control over electric power between tenants not through a center-intensive device.SOLUTION: Each demand control device 10 is connected to a network 20 on a peer-to-peer connection basis. Each demand control device 10 calculates a predicted amount of electric power in a predetermined period on the basis of an amount of electric power measured by a corresponding watthour meter 50. When the predicted amount of electric power exceeds a present upper-limit value, an accommodation request command is transmitted to all other demand control devices 10. A demand control device having received the accommodation request command determines whether or not accommodation is possible, and sends back a response command containing an amount of electric power which can be accommodated when the accommodation is possible. A demand control device 10 having received the response command temporarily adds the amount of electric power which can be accommodated contained in the response command to the upper-limit value. The other demand control device 10, on the other hand, temporarily subtracts the amount of electric power which can be accommodated from the upper-limit value.

Description

  The present invention relates to a technique for accommodating power between consumers.

  In recent years, demand control in buildings and factories has been attracting attention for the purpose of power saving measures. For example, in Patent Document 1, in a factory (building) composed of a plurality of small factories (tenants), a target power is set for each small factory (tenant), and each small factory (tenant) unit does not exceed this. Discloses a technology that enables demand control.

  By the way, as described above, when demand control is performed for each department in a factory or each tenant such as a tenant building, a certain tenant A uses an upper limit value (upper limit power amount) set by itself as a predicted value (prediction Even if the amount of power used is likely to exceed, there may naturally be a case where there is a margin between the upper limit value and the predicted value in the other tenant B.

  In such a case, if the surplus power amount of the tenant B can be accommodated to the tenant A, the tenant A may not need to perform demand control. In other words, in the tenant A, there may be a case where it is not necessary to perform control for reducing the operation capacity, such as stopping the operation of facility equipment (for example, an air conditioner or a production equipment).

  If power can be interchanged between tenants as described above, comfort and productivity can be maintained in each tenant without exceeding the set upper limit for the entire tenant building.

  With regard to power interchange, Patent Document 2 discloses a system for performing power interchange between power receiving facilities by a power demand monitoring center connected to a plurality of power receiving facilities via a communication network such as a telephone line. .

Japanese Patent No. 4032903 JP 2003-32887 A

  However, the technique disclosed in Patent Document 2 relates to the interchange of power between power receiving facilities distributed in a wide area, and the power between tenants residing in the same tenant building as described above. It is not intended to be flexible.

  Moreover, in patent document 2, the process regarding electric power accommodation is collectively implemented by the computer installed in the electric power demand monitoring center. Therefore, when a problem occurs in the computer of the power demand monitoring center for some reason, the power interchange function cannot be performed at all.

  The present invention has been made to solve the above-described conventional problems, and allows power interchange control between customers such as tenants occupying buildings without using a centralized device. The purpose is to provide a system.

In order to achieve the above object, a power interchange system according to the present invention includes:
A plurality of demand control devices installed corresponding to each of a plurality of consumers is a power interchange system formed by peer-to-peer connection to a predetermined network,
Each demand control device includes a communication unit that communicates with other demand control devices via the network by a predetermined communication method,
An upper limit storage unit that stores an upper limit that is a target upper limit of the amount of power consumed in the demand area of the consumer;
An electric energy acquisition unit for acquiring electric energy consumed in the demand area;
A device interface unit that communicates with a facility device that receives power supply from a power supply line drawn into the demand area by a predetermined communication method;
A power prediction unit that calculates a predicted power amount for a predetermined period based on the power amount acquired by the power amount acquisition unit;
The upper limit value and the predicted power amount are compared at a predetermined timing, and when the predicted power amount exceeds the upper limit value, a predetermined demand control for reducing the operating capacity for the facility equipment A demand control unit that performs
The upper limit value is compared with the predicted power amount at a predetermined timing, and when the predicted power amount exceeds the upper limit value, an interchange request command for requesting power interchange is generated, and the communication unit is An interchange request unit that transmits to all other demand control devices connected to the network via the network;
When a response command is received from the other demand control device with respect to the accommodation request command by the communication unit, the response command is analyzed, and the available power amount indicating the amount of power that can be accommodated by the other demand control device is obtained. If it is included in the response command, the other demand control device generates an accommodation confirmation command indicating that the other demand control device is accommodated, and transmits the response command to the other demand control device. A first accommodation adjustment unit that transmits to the demand control device and temporarily adds the available electric energy to the upper limit;
When the interchange request command from another demand control device is received by the communication unit, it is determined whether or not the accommodation is possible based on the upper limit value and the predicted power amount, and the accommodation is possible. In some cases, the interchangeable power amount is calculated, the response command storing the calculated interchangeable power amount is generated, and transmitted to the other demand control device that has transmitted the interchange request command via the communication unit. An interchange request responding unit,
When the communication unit receives the interchange confirmation command from another demand control device for the response command, the interchangeable power amount calculated by the interchange request responding unit is temporarily subtracted from the upper limit value. And a second accommodation adjustment unit.

  According to the present invention, it is possible to control the interchange of power between consumers without the need to provide a centralized device.

1 is a diagram illustrating an overall configuration of a power accommodation system according to an embodiment of the present invention. It is a block diagram which shows the structure of a watt-hour meter. It is a block diagram which shows the structure of the demand control apparatus which concerns on one Embodiment of this invention. It is a block diagram which shows the structure of the accommodation request | requirement process part with which the demand control apparatus of this embodiment is provided. FIG. 6 is a diagram (No. 1) for explaining a relationship among a required power amount for accommodation, a power amount that can be accommodated, and a power amount for accommodation. FIG. 10 is a diagram (part 2) for explaining the relationship between the required power amount, the available power amount, and the available electricity amount. It is a block diagram which shows the structure of the accommodation burden side process part with which the demand control apparatus of this embodiment is provided. It is a flowchart which shows the procedure of a power interchange request side process. It is a flowchart which shows the procedure of the electric power accommodation burden side process. It is the figure which showed a series of processes in the demand control apparatus of the side which receives the interchange of electric power in time series.

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

  FIG. 1 is a diagram showing an overall configuration of a power interchange system 1 according to an embodiment of the present invention. The power interchange system 1 is a system that is introduced into, for example, a tenant building in which a plurality of tenants occupy, and that allows power interchange between tenants (customers).

  As shown in FIG. 1, the power accommodation system 1 includes a demand control device 10 (10A, 10B,...) Installed for each tenant (tenant A, B,...) It is configured to be connected peer-to-peer to a network 20 such as a LAN (Local Area Network) built in the building.

  A power line 30 connected to a commercial power source is drawn into the tenant building. A power supply line 31 (31A, 31B,...) Branched from the power line 30 is drawn into the tenant occupancy area by a branch breaker 40 (40A, 40B,...) Corresponding to each tenant.

  A watt hour meter 50 (50A, 50B,...) Is connected to each power supply line 31 (31A, 31B,...) Correspondingly. Each watt-hour meter 50 (50A, 50B,...) Measures the amount of power consumed in the corresponding tenant's tenant area.

  As shown in FIG. 2, the watt-hour meter 50 includes a voltage measurement unit 500, a current measurement unit 501, an A / D conversion unit 502, a power calculation unit 503, and an external interface unit 504.

  The voltage measurement unit 500 measures the voltage value on the corresponding power supply line 31, and the current measurement unit 501 measures the current value of the current flowing through the power supply line 31.

  The A / D conversion unit 502 performs A / D (Analog / Digital) conversion on the measured voltage value and current value. The power calculation unit 503 calculates a power value (power amount integrated value) from the A / D converted voltage value and current value. The external interface unit 504 is communicably connected to the demand control device 10 corresponding to the occupancy area, and outputs the power value (power consumption amount) calculated by the power calculation unit 503 to the demand control device 10.

  Each demand control device 10 (10A, 10B,...) Is a device that performs demand control of facility equipment 60 (60A, 60B,...) Installed in the corresponding occupancy area. Each demand control device 10 (10A, 10B,...) Is communicably connected to the facility equipment 60 (60A, 60B,...) Via a predetermined facility network 70 (70A, 70B,...). The equipment 60 is, for example, an apparatus that adjusts the living environment of the space in the tenant's tenant area, such as an air conditioner, an illuminator, or a production device, or an apparatus that contributes to the production activity of the tenant.

  Demand control refers to equipment that corresponds to the case where the power consumption for a predetermined period (in this example, the current demand time limit) of the tenant exceeds the target upper limit (upper limit) of the power consumption set in advance for the tenant. This means control for reducing the operation capacity of 60, that is, reducing the power consumption of the equipment 60. The control for decreasing the driving ability includes, for example, control for stopping the driving or changing the driving mode.

  The demand control device 10 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a readable / writable nonvolatile semiconductor memory such as a flash memory, an external storage device such as a hard disk drive, A communication interface for communicating with the total 50, a communication interface for communicating with the facility device 60, and the like (both not shown) are included. Each process (details will be described later) executed by the demand control device 10 is realized by a CPU or the like executing a predetermined program stored in a ROM or an external storage device.

  Functionally, as shown in FIG. 3, the demand control device 10 functionally includes a power amount acquisition unit 100, a power prediction unit 101, a user interface unit 102, an upper limit storage unit 103, a device interface unit 104, The demand control part 105, the communication part 106, the accommodation request | requirement process part 107, and the accommodation burden side process part 108 are provided.

  The electric energy acquisition unit 100 is connected to the corresponding electric energy meter 50 and inputs the electric power consumption output from the electric energy meter 50. The power amount acquisition unit 100 supplies the input power consumption amount to the power prediction unit 101. The power predicting unit 101 uses the power consumption (predicted power) in a predetermined period at a predetermined timing (for example, when 10 minutes have elapsed from the start of the demand time limit) based on the power consumption supplied from the power acquisition unit 100. Amount). In the present embodiment, the power prediction unit 101 calculates a predicted power amount in the current demand time period. Note that there is no limitation on the method of predicting the power consumption, and various known techniques can be employed. For example, the predicted power consumption may be calculated in consideration of the past power consumption trend of the tenant and the type and number of installed equipment devices 60.

  The user interface unit 102 includes an input device such as an external switch or a dial for accepting input of the above-described upper limit value from the user, and stores the upper limit value input by the user in the upper limit value storage unit 103.

  The device interface unit 104 communicates with one or a plurality of facility devices 60 owned by the tenant through a facility network 70 using a predetermined communication method. The demand control unit 105 determines whether or not demand control is necessary at a predetermined timing (for example, 15 minutes, 20 minutes, and 25 minutes after the start of a demand time limit (for example, 30 minutes)). Specifically, the demand control unit 105 compares the upper limit value stored in the upper limit value storage unit 103 with the predicted power amount calculated by the power prediction unit 101, and the predicted power amount exceeds the upper limit value. If it is (exceeds), it is determined that demand control is necessary.

  If it is determined that demand control is necessary, the demand control unit 105 immediately generates a control command for demand-controlling the corresponding equipment 60. At this time, the demand control unit 105 determines the content of the control command (stop, change of operation mode) taking into account the excess of the predicted power amount, or determines the number of equipment devices 60 to be controlled, etc. Good. Alternatively, the demand control unit 105 has, in advance, a priority order for each facility device 60 owned by the tenant (which may be either a priority order in which the demand control is not performed or a priority order in which the tenant is performed). When it is determined, the equipment 60 to be controlled may be selected according to the priority order.

  The demand control unit 105 transmits the generated control command to the corresponding equipment device 60 via the device interface unit 104.

  The communication unit 106 includes, for example, a network card such as a LAN card, is connected to the network 20, and communicates with other demand control devices 10 by a predetermined communication method.

  The accommodation request side processing unit 107 performs processing when the demand control device 10 is on the side requesting power accommodation. As shown in FIG. 4, the accommodation request side processing unit 107 includes an accommodation request unit 1070 and a first accommodation adjustment unit 1071. The accommodation request unit 1070 receives the upper limit value stored in the upper limit value storage unit 103 and the power prediction unit 101 at a predetermined timing (for example, when the predicted power amount is calculated by the power prediction unit 101). Is compared with the predicted power amount calculated by the above, and if the predicted power amount exceeds the upper limit value, an accommodation request command for requesting accommodation of power is generated. Then, the accommodation request unit 1070 broadcasts the generated accommodation request command to all other demand control devices 10 connected to the network 20 via the communication unit 106.

  When the communication unit 106 receives a response command from another demand control apparatus 10 for the transmitted accommodation request command, the first accommodation adjustment unit 1071 analyzes the response command. Then, if the response command includes a power amount that can be accommodated indicating the amount of power that can be accommodated by the other demand control device 10, the first accommodation adjustment unit 1071 extracts this and temporarily stores it. Hold on. The first accommodation adjustment unit 1071 performs the same processing as described above for all response commands sent during a predetermined time (for example, 3 minutes) after transmission of the accommodation request command.

  Then, when a predetermined time has elapsed since the transmission of the interchange request command, the first interchange adjustment unit 1071 obtains a total interchangeable power amount that is a sum of the extracted interchangeable power amounts. When the total available power amount is smaller than the requested power amount obtained by subtracting the upper limit value from the predicted power amount, the first accommodation adjusting unit 1071 transmits each other demand control that has transmitted a response command indicating that accommodation is possible. The device 10 is notified that it has the flexibility.

  Specifically, for each of the other demand control devices 10, a command (accommodation confirmation command) that stores each of the interchange demand power amounts as an accommodation burden power amount to be borne by each of the other demand control devices 10. ) And is transmitted to each of the other demand control devices 10 via the communication unit 106. FIG. 5 shows an example of the relationship between the requested power amount, each available power amount, and each interchangeable power amount in this case.

  In FIG. 5, in tenant A, the predicted power value exceeds 80 kWh from the upper limit (that is, the requested power amount is 80 kWh), and as a result of the demand control device 10A sending the accommodation request command, the demand control device 10B of tenant B and the tenant A response command indicating that accommodation is possible is transmitted from the demand control device 10C of C, and the interchangeable power amounts are 30 kWh and 20 kWh, respectively. And it is shown that the accommodation burden electric energy of tenant B and tenant C is the same as each interchangeable electric energy.

  On the other hand, when the total available power amount exceeds the required interchange power amount, the first accommodation adjustment unit 1071 uses the predetermined calculation (distribution) technique to provide accommodation power for each of the other demand control devices 10. Calculate the amount. The distribution method in this case is an arbitrary design item. For example, as shown in FIG. 6, each interchangeable burden energy may be calculated according to the ratio of each interchangeable power amount.

  When the first accommodation adjustment unit 1071 transmits the above accommodation confirmation command, the first accommodation adjustment unit 1071 causes the RAM or the like to save the upper limit value stored in the upper limit value storage unit 103 as the original upper limit value. Then, the first accommodation adjustment unit 1071 updates the upper limit value stored in the upper limit value storage unit 103 by adding the total amount of accommodation burden electric energy. As a result, the result of accommodation by the other demand control devices 10 is reflected in the upper limit value. Since this accommodation is valid only for the current demand time period, the first accommodation adjustment unit 1071 updates the upper limit value stored in the upper limit value storage unit 103 to the original value at the end of the current demand time period. .

  The accommodation burden side processing unit 108 performs processing when the demand control device 10 is on the side that bears the accommodation of power. As shown in FIG. 7, the accommodation load side processing unit 108 includes an accommodation request response unit 1080 and a second accommodation adjustment unit 1081. When the communication unit 106 receives an accommodation request command from another demand control apparatus 10, the accommodation request response unit 1080 determines whether accommodation is possible based on the upper limit value and the predicted power amount. Determine.

  For example, the accommodation request response unit 1080 determines that accommodation is possible when the upper limit value is larger than a value obtained by adding a preset threshold value (for example, 10 kWh) to the predicted power amount. When the accommodation request response unit 1080 determines that the accommodation is possible, the accommodation request response unit 1080 calculates the available power amount by a predetermined calculation method. For example, when the upper limit value is 100 kWh, the predicted power amount is 70 kWh, and the threshold value is 10 kWh, the accommodation request response unit 1080 calculates 20 (= 100− (70 + 10)) kWh as the accommodable power amount. Note that the size of the threshold is an arbitrary design item, and may be set to, for example, 0 kWh (in this case, the value obtained by subtracting the predicted power amount from the upper limit value is the interchangeable power amount). Then, the accommodation request response unit 1080 generates a response command that stores the calculated available power amount, and transmits the response command to the other demand control device 10 that has transmitted the accommodation request command via the communication unit 106.

  When the communication unit 106 receives an accommodation confirmation command from another demand control apparatus 10 for the response command transmitted by the accommodation request response unit 1080, the second accommodation adjustment unit 1081 receives the accommodation burden electric energy from the accommodation confirmation command. To extract. The second accommodation adjustment unit 1081 causes the RAM or the like to save the upper limit value stored in the upper limit value storage unit 103 as the original upper limit value. Then, the second accommodation adjusting unit 1081 subtracts the extracted accommodation burden electric energy from the upper limit value stored in the upper limit value storage unit 103. As a result, the result of the accommodation for the other demand control devices 10 is reflected in the upper limit value. Since this accommodation is valid only for the current demand time period, the second accommodation adjustment unit 1081 updates the upper limit value stored in the upper limit value storage unit 103 to the original value at the end of the current demand time period. .

  FIG. 8 is a flowchart showing a procedure of power interchange request side processing by the demand control apparatus 10 configured as described above. This power interchange request side process is started when the predicted power amount is calculated by the power prediction unit 101. The accommodation request unit 1070 of the accommodation request side processing unit 107 of the demand control device 10 determines whether or not the predicted power amount calculated by the power prediction unit 101 exceeds the upper limit value stored in the upper limit value storage unit 103. Determination is made (step S101).

  If the predicted power amount does not exceed the upper limit value (step S101; NO), the demand control device 10 ends the power interchange request side process. On the other hand, if the predicted power amount exceeds the upper limit (step S101; YES), the accommodation request unit 1070 generates an accommodation request command for requesting accommodation of power (step S102). Then, the accommodation request unit 1070 broadcasts the generated accommodation request command to all other demand control devices 10 connected to the network 20 via the communication unit 106 (step S103).

  When a response command from another demand control device 10 for the transmitted accommodation request command is received by the communication unit 106 (step S104; YES), the first accommodation adjustment unit 1071 determines the amount of power that can be accommodated from the response command. Extract (step S105). If the predetermined time (for example, 3 minutes) has not elapsed since the transmission of the accommodation request command (step S106; NO), the first accommodation adjustment unit 1071 repeatedly executes the processes of steps S104 and S105.

  When a predetermined time has elapsed after the transmission of the accommodation request command (step S106; YES), the first accommodation adjustment unit 1071 calculates a total accommodation power amount by summing the extracted accommodation power amounts (step S107). The 1st accommodation adjustment part 1071 calculates the accommodation burden electric energy for every other demand control apparatus 10 based on the total available electric power amount and the interchange request | requirement electric energy (step S108). Then, the first accommodation adjustment unit 1071 generates an accommodation confirmation command that stores the accommodation burden power amount for each of the other demand control devices 10, and each of the other demand control devices via the communication unit 106. 10 (step S109). The first accommodation adjusting unit 1071 temporarily increases the upper limit value by adding the total amount of interchangeable power consumption to the upper limit value stored in the upper limit value storage unit 103 (step S110).

  FIG. 9 is a flowchart showing the procedure of the power accommodation burden side processing by the demand control device 10. This power interchange burden side processing is started when the power supply of the demand control device 10 is turned on. When the communication unit 106 receives a command from another demand control device 10 (step S201; YES) and the command is an accommodation request command (step S202; YES), the accommodation request response of the accommodation load side processing unit 108 The unit 1080 determines whether or not accommodation is possible based on the upper limit value stored in the upper limit value storage unit 103 and the predicted power amount calculated by the power prediction unit 101 (step S203). .

  When the accommodation request response unit 1080 determines that the accommodation is possible (step S203; YES), the accommodation request response unit 1080 calculates the available power amount, generates a response command that stores the calculated available power amount, and receives the accommodation request command. To the other demand control device 10 of the transmission source (step S204). Then, the process of the demand control device 10 proceeds to step S201. On the other hand, when it is determined that accommodation is not possible (step S203; NO), the accommodation request response unit 1080 discards the accommodation request command (step S205). Then, the process of the demand control device 10 proceeds to step S201.

  When the command received by the communication unit 106 is an accommodation confirmation command (step S202; NO), the second accommodation adjustment unit 1081 extracts the accommodation burden electric energy from the accommodation confirmation command (step S206). Then, the second accommodation adjustment unit 1081 temporarily lowers the upper limit value by subtracting the extracted accommodation burden electric energy from the upper limit value stored in the upper limit value storage unit 103 (step S207). Then, the process of the demand control device 10 proceeds to step S201.

  FIG. 10 shows a series of processing in the demand control apparatus 10 on the side receiving power interchange in time series. In this example, it is assumed that the upper limit value is set to 80 kWh in the tenant. First, when 10 minutes have elapsed from the start time of the demand time period (12:00), the power prediction unit 101 predicts the amount of predicted power for the current demand time period (12: 0 to 12:30) (here, 160 kWh). Is calculated. When the predicted power amount is calculated, since the predicted power amount> the upper limit value, the accommodation request side processing unit 107 transmits an accommodation request command to all other demand control devices 10.

  When a predetermined time (in this case, 3 minutes) has elapsed since the transmission of the accommodation request command, the first accommodation adjustment unit 1071 responds to the accommodation request command with the accommodation included in the plurality of response commands from the other plurality of demand control devices 10. The total available electric energy is obtained by summing up the available electric energy. Here, it is assumed that the total available power amount exceeds the required interchange power amount (80 (= 160-80) kWh). The first accommodation adjustment unit 1071 generates an accommodation confirmation command storing the calculated accommodation burden power amount for each of the other demand control devices 10, and sends it to the corresponding demand control device 10 via the communication unit 106. Send.

  When the first accommodation adjustment unit 1071 transmits the accommodation confirmation command, the upper limit value stored in the upper limit value storage unit 103 is added to the total amount of accommodation burden electric energy (here, the same as the requested interchange electric energy (80 kWh)). ) To temporarily increase the upper limit. That is, the upper limit value is 160 kWh.

  The demand control unit 105 is 15 minutes, 20 minutes and 25 minutes after the start of the demand time period (12: 0 to 12:30) (that is, 12:15, 12:20 and 12:25). The necessity of demand control in the current demand time period (12: 0 to 12:30) is determined. Here, since the predicted power amount is equal to the upper limit value at each time point, the demand control unit 105 determines that demand control is not necessary. The first accommodation adjustment unit 1071 lowers the upper limit value stored in the upper limit value storage unit 103 at the end of the current demand period (12:30) and returns it to the original value (80 kWh).

  Note that, when there are a plurality of tenants whose predicted power amount exceeds the upper limit value in the current demand period, priority is given to any one tenant to accommodate power. For example, priority is given to the tenant corresponding to the demand control apparatus 10 that has transmitted the accommodation request command earliest.

  As described above, according to the power interchange system according to the present embodiment of the present invention, it is possible to perform power interchange control between consumers such as tenants moving into a building or the like. Accordingly, each tenant can take power saving measures for the entire tenant building while maintaining comfort and productivity.

  In addition, since it is not necessary to provide a centralized device, it is possible to avoid a situation where the power interchange function cannot be performed at all tenants.

  In addition, this invention is not limited to the said embodiment, Of course, the various change in the range which does not deviate from the summary of this invention is possible.

  For example, in the above embodiment, the tenant building has been described as an example. However, the power interchange system of the present invention may be introduced into a company building or factory. In that case, a demand control device is installed for each department or building.

  Further, when demand control is required in the demand control apparatus, the user may be notified in a predetermined manner before the demand control is performed (for example, a warning sound is output or a warning lamp is turned on). Lighting, flashing, etc.). In this way, the user knows in advance that the demand control will be performed, and can prepare for that.

  Further, the accommodation request unit 1070 of the accommodation request side processing unit 107 may store the accommodation request power amount obtained by subtracting the upper limit value from the predicted power amount in the accommodation request command. In this case, if the accommodation request response unit 1080 of the accommodation burden side processing unit 108 in the other demand control device 10 determines that the accommodation is possible, the accommodation request power amount included in the received accommodation request command is exceeded. The interchangeable power amount may be calculated so as not to be.

  Further, the power meter 50 may be included in the demand control device 10.

  Further, the power interchange target period can be set not only in the current demand time period but also in any future predetermined period such as the next demand time period. In this case, for example, the power prediction unit 101 calculates the predicted power amount in the next demand time limit. Then, the accommodation request side processing unit 107 performs processing for requesting power accommodation at the next demand time period, and the accommodation burden side processing unit 108 performs processing to bear power accommodation at the next demand time period.

  In addition, by applying the program executed by the demand control device 10 of the above embodiment to an existing personal computer (PC) or the like, the PC can also function as the demand control device according to the present invention.

  Such a program distribution method is arbitrary, for example, a computer-readable recording medium such as a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), an MO (Magneto Optical Disk), or a memory card. It may be stored and distributed in a network, or distributed via a communication network such as the Internet.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. Further, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Electric power accommodation system 10A, 10B Demand control apparatus 100 Electric energy acquisition part 101 Electric power prediction part 102 User interface part 103 Upper limit storage part 104 Equipment interface part 105 Demand control part 106 Communication part 107 Accommodation request side processing part 1070 Accommodation request part 1071 1st accommodation adjustment part 108 accommodation load side processing part 1080 accommodation request response part 1081 2nd accommodation adjustment part 20 network 30 power line 31A, 31B power supply line 40A, 40B branch breaker 50A, 50B watt-hour meter 500 voltage measurement part 501 Current measurement unit 502 A / D conversion unit 503 Power calculation unit 504 External interface units 60A and 60B Equipment devices 70A and 70B Equipment network

Claims (11)

A plurality of demand control devices installed corresponding to each of a plurality of consumers is a power interchange system formed by peer-to-peer connection to a predetermined network,
Each demand control device includes a communication unit that communicates with other demand control devices via the network by a predetermined communication method,
An upper limit storage unit that stores an upper limit that is a target upper limit of the amount of power consumed in the demand area of the consumer;
An electric energy acquisition unit for acquiring electric energy consumed in the demand area;
A device interface unit that communicates with a facility device that receives power supply from a power supply line drawn into the demand area by a predetermined communication method;
A power prediction unit that calculates a predicted power amount for a predetermined period based on the power amount acquired by the power amount acquisition unit;
The upper limit value and the predicted power amount are compared at a predetermined timing, and when the predicted power amount exceeds the upper limit value, a predetermined demand control for reducing the operating capacity for the facility equipment A demand control unit that performs
The upper limit value is compared with the predicted power amount at a predetermined timing, and when the predicted power amount exceeds the upper limit value, an interchange request command for requesting power interchange is generated, and the communication unit is An interchange request unit that transmits to all other demand control devices connected to the network via the network;
When a response command is received from the other demand control device with respect to the accommodation request command by the communication unit, the response command is analyzed, and the available power amount indicating the amount of power that can be accommodated by the other demand control device is If it is included in the response command, the other demand control device generates an accommodation confirmation command indicating that the other demand control device is accommodated, and transmits the response command to the other demand control device. A first accommodation adjustment unit that transmits to the demand control device and temporarily adds the available electric energy to the upper limit;
When the interchange request command from another demand control device is received by the communication unit, it is determined whether or not the accommodation is possible based on the upper limit value and the predicted power amount, and the accommodation is possible. In some cases, the interchangeable power amount is calculated, the response command storing the calculated interchangeable power amount is generated, and transmitted to the other demand control device that has transmitted the interchange request command via the communication unit. An interchange request responding unit,
When the communication unit receives the interchange confirmation command from another demand control device for the response command, the interchangeable power amount calculated by the interchange request responding unit is temporarily subtracted from the upper limit value. A second accommodation adjustment unit,
Power interchange system characterized by this. The power amount acquisition unit is connected to the power supply line and communicates with a power meter that measures the amount of power consumed in the demand area by a predetermined communication method, and the power amount measured by the power meter Receive,
The power interchange system according to claim 1. The first accommodation adjustment unit stores, in the accommodation confirmation command, the accommodation burden power amount to be borne by the other demand control device, and transmits the response command via the communication unit. While transmitting to the device, temporarily adding the accommodation burden energy to the upper limit,
When the accommodation confirmation command is received, the second accommodation adjustment unit extracts the accommodation burden power amount from the accommodation confirmation command, and temporarily subtracts the accommodation burden power amount from the upper limit value.
The power interchange system according to claim 1 or 2. The first accommodation adjustment unit obtains the required power for accommodation, which is obtained by subtracting the upper limit value from the predicted amount of power, which is included in a response command from another demand control device to the accommodation request command. If the amount exceeds the amount, the requested power amount is stored in the accommodation confirmation command as the accommodation burden power amount, and transmitted to the other demand control device that has transmitted the response command via the communication unit.
The power interchange system according to claim 3. The first accommodation adjustment unit, when a plurality of response commands from a plurality of other demand control devices with respect to the accommodation request command includes the accommodation power amount, calculates a total accommodation power amount by summing them. And calculating the accommodation burden power amount for each of the other demand control devices under a predetermined condition, generating a plurality of accommodation confirmation commands each storing the calculated accommodation burden power amount, and Respectively, to the corresponding other demand control devices, and to temporarily add the total of the accommodation burden electric energy to the upper limit value,
The power interchange system according to claim 3. The accommodation request unit stores the accommodation required power amount obtained by subtracting the upper limit value from the predicted power amount in the accommodation request command, and all other demand controls connected to the network via the communication unit. To the device,
When the accommodation request response unit determines that the accommodation is possible when receiving the accommodation request command from another demand control device, the accommodation request response unit sets the available power amount so as not to exceed the accommodation demand power amount. calculate,
The power interchange system according to any one of claims 1 to 5, wherein: A user interface for receiving an input of the upper limit value from the user;
The power interchange system according to any one of claims 1 to 6, wherein The first accommodation adjustment unit receives accommodation of power from a demand control device that is a transmission source of a response command received within a predetermined time after transmission of the accommodation request command.
The power interchange system according to any one of claims 1 to 7. A demand control device that is installed corresponding to each of a plurality of consumers and peer-to-peer-connects to a predetermined network,
A communication unit that communicates with another demand control device through a predetermined communication method via the network;
An upper limit storage unit that stores an upper limit that is a target upper limit of the amount of power consumed in the demand area of the consumer;
An electric energy acquisition unit for acquiring electric energy consumed in the demand area;
A device interface unit that communicates with a facility device that receives power supply from a power supply line drawn into the demand area by a predetermined communication method;
A power prediction unit that calculates a predicted power amount for a predetermined period based on the power amount acquired by the power amount acquisition unit;
The upper limit value and the predicted power amount are compared at a predetermined timing, and when the predicted power amount exceeds the upper limit value, a predetermined demand control for reducing the operating capacity for the facility equipment A demand control unit that performs
The upper limit value is compared with the predicted power amount at a predetermined timing, and when the predicted power amount exceeds the upper limit value, an interchange request command for requesting power interchange is generated, and the communication unit is An interchange request unit that transmits to all other demand control devices connected to the network via the network;
When a response command is received from the other demand control device with respect to the accommodation request command by the communication unit, the response command is analyzed, and the available power amount indicating the amount of power that can be accommodated by the other demand control device is obtained. If it is included in the response command, the other demand control device generates an accommodation confirmation command indicating that the other demand control device is accommodated, and transmits the response command to the other demand control device. A first accommodation adjustment unit that transmits to the demand control device and temporarily adds the available electric energy to the upper limit;
When the interchange request command from another demand control device is received by the communication unit, it is determined whether or not the accommodation is possible based on the upper limit value and the predicted power amount, and the accommodation is possible. In some cases, the interchangeable power amount is calculated, the response command storing the calculated interchangeable power amount is generated, and transmitted to the other demand control device that has transmitted the interchange request command via the communication unit. An interchange request responding unit,
When the communication unit receives the interchange confirmation command from another demand control device for the response command, the interchangeable power amount calculated by the interchange request responding unit is temporarily subtracted from the upper limit value. A second accommodation adjustment unit,
A demand control device characterized by that. A demand control method by a demand control device,
Obtaining the amount of power consumed in a given demand area;
Calculating a predicted power amount for a predetermined period based on the power amount;
At a predetermined timing, an upper limit value that is a target upper limit of the amount of power consumed in the demand area is compared with the predicted power amount, and if the predicted power amount exceeds the upper limit value, A step of performing predetermined demand control for lowering the operation capability for facility equipment that is supplied with power from the drawn power supply line;
The upper limit value is compared with the predicted power amount at a predetermined timing, and if the predicted power amount exceeds the upper limit value, an interchange request command for requesting power interchange is generated, and Transmitting to all other demand control devices to be connected;
Receiving a response command from another demand control device for the accommodation request command;
The received response command is analyzed, and when the response command includes a power amount that can be accommodated by the other demand control device, the other demand control device can be accommodated. Generating an accommodation confirmation command indicating that the request is received, transmitting the response command to the other demand control device, and temporarily adding the available power amount to the upper limit;
Receiving the accommodation request command from another demand control device;
When the accommodation request command is received, it is determined whether or not accommodation is possible based on the upper limit value and the predicted power amount. If accommodation is possible, the accommodation power amount is calculated. Generating the response command storing the calculated interchangeable power amount, and transmitting the response command to the other demand control device that has transmitted the command.
Receiving the accommodation confirmation command from another demand control device for the response command;
A step of temporarily subtracting the calculated interchangeable power amount from the upper limit when receiving the interchange confirmation command,
The demand control method characterized by the above-mentioned. A demand control device installed corresponding to each of a plurality of consumers and connected peer-to-peer to a predetermined network,
A communication unit that communicates with other demand control devices by a predetermined communication method via the network;
An upper limit storage unit that stores an upper limit that is a target upper limit of the amount of power consumed in the demand area of the consumer;
An electric energy acquisition unit for acquiring electric energy consumed in the demand area,
A device interface unit that communicates with a facility device that receives power supply from a power supply line drawn into the demand area by a predetermined communication method;
A power prediction unit that calculates a predicted power amount for a predetermined period based on the power amount acquired by the power amount acquisition unit;
The upper limit value and the predicted power amount are compared at a predetermined timing, and when the predicted power amount exceeds the upper limit value, a predetermined demand control for reducing the operating capacity for the facility equipment Demand control unit,
The upper limit value is compared with the predicted power amount at a predetermined timing, and when the predicted power amount exceeds the upper limit value, an interchange request command for requesting power interchange is generated, and the communication unit is An interchange requesting unit that transmits to all other demand control devices connected to the network via
When a response command is received from the other demand control device with respect to the accommodation request command by the communication unit, the response command is analyzed, and the available power amount indicating the amount of power that can be accommodated by the other demand control device is obtained. If it is included in the response command, the other demand control device generates an accommodation confirmation command indicating that the other demand control device is accommodated, and transmits the response command to the other demand control device. A first accommodation adjustment unit that transmits to the demand control device and temporarily adds the available electric energy to the upper limit;
When the interchange request command from another demand control device is received by the communication unit, it is determined whether or not the accommodation is possible based on the upper limit value and the predicted power amount, and the accommodation is possible. In some cases, the interchangeable power amount is calculated, the response command storing the calculated interchangeable power amount is generated, and transmitted to the other demand control device that has transmitted the interchange request command via the communication unit. An interchange request response unit,
When the communication unit receives the interchange confirmation command from another demand control device for the response command, the interchangeable power amount calculated by the interchange request responding unit is temporarily subtracted from the upper limit value. Function as a second accommodation adjustment unit,
A program characterized by that.

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