JP6591126B1 - Power saving support system, remote management device, and power saving support program - Google Patents

Abstract

A target reduction amount is input to the amount input unit 50. The exchange rate storage unit stores the exchange ratio between the currency of the input target reduction amount and the local currency that is the currency of the region where the building is installed. The power charge system storage unit 74 stores a power charge system determined between the owner of the building and the supplier that supplies power to the building. The target reduction power amount calculation unit 58 obtains the target reduction power amount according to the conversion target reduction amount obtained by converting the target reduction amount into the local currency amount and the power charge system. In the output restriction content storage unit 78, the output restriction content for any electrical equipment installed in the building is defined. The control planning unit 60 obtains at least one electric device and at least one output restriction content that satisfy the target power reduction amount based on the output restriction content.

Description

  The present invention relates to a power-saving support system, a remote management device, and a power-saving support program that support power-saving of a building by suppressing power consumption of an electrical device installed in a building such as a building (high-rise building).

  For example, an electric power management system (EMS, Energy Management System) is used to control the power consumption of an electric device installed in a building such as a building. The power management system provides, for example, a power saving support service for promoting reduction of power consumption of a building.

  In Patent Document 1, a distributed management apparatus is connected to a group of equipment installed in a building or a store. In addition, a central management device is installed at a remote location away from these. An operation program in which the operation status of the facility is set so as to reduce the amount of energy is distributed from the central management device to the distributed management device. The planned value based on the operation program is compared with the actual value, and when energy saving is achieved, the cost is calculated.

  In Patent Document 2, a building management system that controls the operating status of equipment installed in a building is provided. By the building management system, the difference between the current load and the assumed load is calculated for each device, and the reduction power of the entire building is obtained by collecting these differences.

  In Patent Document 3, a power consumption calculation unit that calculates the value of power consumption for each tenant for the same period and time as in the previous fiscal year, and target power for power consumption in the same period and time of the previous fiscal year according to an index value such as the number of people. A power usage distribution system including a reduction amount calculation unit that distributes the reduction ratio for each tenant is disclosed. In this system, the reduction amount of each tenant is subtracted from the power usage value of each tenant, and the target power value of each tenant is calculated.

JP 2001-306134 A JP-A-2015-104154 JP 2014-157614 A

  By the way, in the conventional power saving support service, power saving measures are formulated based on the power [kW] and the power amount [kWh]. On the other hand, for building owners, such as building owners, from the viewpoint of cost reduction, the emphasis is placed on the reduction of electricity charges due to these rather than power consumption [kW] and power consumption [kWh]. There is. In addition, when building owners own buildings not only in their own country but also in foreign countries, there is a desire to evaluate the power saving measures of these buildings equivalently. Therefore, an object of the present invention is to provide a power saving support system, a remote management device, and a power saving support program that can equally evaluate power saving plans for domestic and foreign buildings based on the amount of money.

  The present invention relates to a power saving support system. The system includes a central management device and a remote management device. The central management device can control the operation of a plurality of electrical devices installed in the building and is installed in the building. The remote management device can transmit a control command to the central management device from a remote location away from the building. The remote management device includes an amount input unit, an exchange rate storage unit, a power rate system storage unit, a target reduction power amount calculation unit, an output restriction content storage unit, and a control plan unit. A target reduction amount is input to the amount input unit. The exchange rate storage unit stores the exchange ratio between the currency of the input target reduction amount and the local currency that is the currency of the region where the building is installed. The power charge system storage unit stores a power charge system determined between the owner of the building and the supplier that supplies power to the building. The target reduction power amount calculation unit obtains the target reduction power amount according to the converted target reduction amount obtained by converting the target reduction amount into the local currency amount and the power charge system. In the output restriction content storage unit, the output restriction content for any electrical device installed in the building is defined. The control planning unit obtains at least one electric device that satisfies the target power reduction amount and at least one output restriction content based on the output restriction content.

  According to the above invention, the control plan corresponding to the target reduced power amount based on the local currency in which the building is installed is calculated only by inputting the target reduction amount. Therefore, for example, it is possible to compare control plans for target reduction amounts of buildings in a plurality of countries and regions on a single currency basis.

  In the above invention, the remote management device may include a money amount distribution unit. When the electricity rate system is a two-part rate system consisting of a fixed rate and a pay-as-you-go system, the amount apportioning unit reduces the conversion target reduction amount by converting the target reduction amount into the local currency amount. And the reduction amount for the pay-as-you-go fee.

  According to the above-described invention, it is possible to distribute a reduction amount corresponding to the two-part fee system.

  In the above invention, the target reduction power amount calculation unit may obtain the target reduction power amount based on a reduction amount corresponding to the metered charge and a power charge system.

  According to the above-described invention, it is possible to obtain the target power reduction amount corresponding to the reduction amount distributed as the metered amount.

  In the above invention, the fixed fee may be determined according to the maximum power consumption of the main power in the building. In this case, the remote management device may include a target maximum power calculation unit that obtains a target maximum power based on a fixed charge reduction amount and a power charge system. The control planning unit obtains at least one electric device and at least one output restriction content that satisfy the target maximum power and the target reduction power amount.

  According to the above invention, when the fixed fee is determined according to the maximum power consumption of the main power, the target maximum power corresponding to the reduction amount for the fixed fee can be obtained. In this way, even when the charge system is different between the metered charge and the fixed charge, power saving measures can be taken for both in a balanced manner.

  Further, another example of the present invention is capable of controlling the operation of a plurality of electrical devices installed in a building and giving a control command to a central management device installed in the building from a distance from the building. The present invention relates to a remote management device capable of transmission. The remote management device includes an amount input unit, an exchange rate storage unit, a power rate system storage unit, a target reduction power amount calculation unit, an output restriction content storage unit, and a control plan unit. A target reduction amount is input to the amount input unit. The exchange rate storage unit stores the exchange ratio between the currency of the input target reduction amount and the local currency that is the currency of the region where the building is installed. The power charge system storage unit stores a power charge system determined between the owner of the building and the supplier that supplies power to the building. The target reduction power amount calculation unit obtains the target reduction power amount according to the converted target reduction amount obtained by converting the target reduction amount into the local currency amount and the power charge system. In the output restriction content storage unit, the output restriction content for any electrical device installed in the building is defined. The control planning unit obtains at least one electric device that satisfies the target power reduction amount and at least one output restriction content based on the output restriction content.

  Still another example of the present invention relates to a power saving support program. The program is capable of controlling the operation of a plurality of electrical devices installed in a building, and is capable of transmitting a control command from a remote location away from the building to a central management device installed in the building. A computer functions as a management device. That is, the program causes the computer to function as an amount input unit, an exchange rate storage unit, a power rate system storage unit, a target reduction power amount calculation unit, an output restriction condition storage unit, and a control plan unit. A target reduction amount is input to the amount input means. The exchange rate storage means stores the exchange ratio between the currency of the input target reduction amount and the local currency that is the currency of the region where the building is installed. The power charge system storage means stores a power charge system determined between the owner of the building and a supplier that supplies power to the building. The target reduction power amount calculation means obtains the target reduction power amount according to the converted target reduction amount obtained by converting the target reduction amount into the local currency amount and the power charge system. The output restriction condition storage means defines the output restriction contents for any electrical equipment installed in the building. The control planning means obtains at least one electric device and at least one output restriction content that satisfy the target power reduction amount based on the output restriction content.

  According to the present invention, it is possible to equivalently evaluate power saving plans for domestic and foreign buildings based on the amount of money.

It is a figure which illustrates the power-saving assistance system concerning this embodiment. It is a figure which illustrates the functional block of a remote management apparatus. It is a figure which illustrates the memory content of a property information storage part. It is a figure which illustrates the memory content of a power bill system storage part. It is a graph which illustrates monthly power consumption. It is a monthly graph explaining contract electric power. It is a daily graph explaining contract electric power. It is a graph according to time explaining contract electric power. It is a figure which illustrates the output restriction list memorized by the output restriction contents storage part. It is a graph according to time explaining equal restriction which is an example of power saving control. It is a graph according to time explaining peak cut which is an example of power saving control. It is a monthly graph explaining the equal restriction which is an example of power saving control. It is a monthly graph explaining peak cut which is an example of power saving control. It is a flowchart which illustrates the power-saving plan creation process (only electric energy) which concerns on this embodiment. It is a flowchart (1/2) which illustrates the power-saving plan creation process (electric power amount and contract power) concerning this embodiment. It is a flowchart (2/2) which illustrates the power-saving plan preparation process (electric energy and contract power) concerning this embodiment. It is a figure explaining reduction of contract electric power.

  FIG. 1 illustrates a power saving support system according to this embodiment. The power saving support system illustrated in FIG. 1 includes, for example, a BEMS (Building and Energy Management System) that is a supervisory control system for electrical equipment (electric equipment) installed in a building 11 (high-rise building) or the like. .

  The power saving support system includes a central management device 10 and a remote management device 12. The central management device 10 is installed in a building 11 and can control operations of a plurality of electric devices 20A to 20C (electric equipment) installed in the building 11.

  The central management apparatus 10 may be, for example, a central monitoring server called B-OWS (BACnet Operator Workstation). The central management device 10 is connected to the sub-controllers 14A and 14B (B-BC) via a bus. The sub-controllers 14A and 14B are connected to the electric devices 20A to 20C and the various sensors 22A to 22D, which are managed devices.

  The electric devices 20 </ b> A to 20 </ b> C are various equipment devices installed in the building, and are management target devices (control target devices) of the central management apparatus 10. The electric devices 20A to 20C include, for example, lighting devices, air conditioning devices, elevators, sanitary devices, disaster prevention devices, and crime prevention devices. In the example of FIG. 1, the electric device 20A is a lighting device, the electric device 20B is a lighting operation panel, and the electric device 20C is an air conditioner.

  Sensor 22A is an illuminance sensor, sensor 22B is an illumination power meter, 22C is an air conditioner sensor, and sensor 22D is an air conditioning power meter. Thus, one power meter may be provided for one electrical device 20.

  Further, the sensor 22E is a main power meter, and in short, is a meter that measures the power consumption (building unit power consumption) of the entire building 11 transmitted from the electric power company to the building 11 that is managed by the central management device 10. The power consumption [kWh] and the maximum power consumption [kW] of the entire building 11 can be obtained from the main power meter 22E.

  The main power meter 22E is installed by an electric power company, for example, and the main power detected by the main power meter 22E is transmitted to the electric power company. By enabling the central management device 10 to monitor the main power transmitted to the electric power company, information on the main power can be shared between the electric power company and the building manager.

  Note that FIG. 1 illustrates a part of devices such as the sub-controller 14 connected to the lower level of the central management device 10 due to space limitations, and various devices other than the illustrated configuration are connected. It may be.

  The central management apparatus 10 has a function as a client PC that is monitored by an administrator of the building 11 and a function as a server that performs data storage, application processing, and the like. In the central management device 10, for example, screen display and setting operations are performed.

  The central management device 10 is connected to the remote management device 12 via the gateway device 15 and the communication line 16. The gateway device 15 is, for example, a device interposed during communication between a device in the BEMS system and a device outside the BEMS system. The gateway device 15 is interposed between devices with different communication protocols, for example, and can transmit information of the other (for example, the central management device 10) to one side according to the communication protocol of one (for example, the remote management device 12). . As the communication line 16, for example, a point-to-point dedicated line or a general line connecting the central management apparatus 10 and the remote management apparatus 12 is used.

  The sub-controller 14 mainly has a control function. The sub-controller 14 is configured by, for example, a so-called B-BC (BACnet Building Controller), and manages point data, schedule control, and the like. For example, one sub-controller 14 is provided for each function-based system (sub-system) such as an air-conditioning system, lighting system, elevator system, sanitary system, and security system.

  The remote management device 12 is installed remotely from the central management device 10. For example, the remote management device 12 can be connected to a plurality of central management devices 10. For example, the remote management device 12 is installed in a maintenance company (maintenance center) that has a building maintenance contract, and the central management device 10 is installed in a building owned by a building administrator (client) that has signed the maintenance contract.

  The remote management device 12 can receive facility operation data, power consumption [kW] of main power, and power consumption [kWh] from each central management device 10. Here, the facility operation data is data detected from a sensor such as the illuminance sensor 22A, for example, and includes power consumption [kW], power consumption [kWh], temperature, illuminance, air volume, and rotation of each electrical device 20. Various data such as number, torque, and set temperature are included.

  The power consumption [kW] is theoretically an instantaneous value, but a so-called demand value may be treated as the power consumption [kW] in accordance with the practice of calculating the power charge. The demand value indicates an average value of power consumption [kW] for 30 minutes.

  Further, as will be described later, the remote management device 12 can transmit a control command to the central management device 10. The control command is a command (signal) for controlling the operation of the electric devices 20A to 20C in the building 11, and these electric devices 20A to 20C are received by the central management device 10 that has received the control command from the remote management device 12. The operation of 20C is controlled.

  The central management device 10, the remote management device 12, and the sub-controllers 14A and 14B are configured from a computer. For example, as shown typically in the central management device 10 and the remote management device 12, each of them includes a CPU 26, a memory 28, a hard disk drive (HDD) 30, an input unit 32, an output unit 34, and an input / output interface 36. Provided.

  As will be described later, the CPU 26, the memory 28, and the hard disk drive 30 of the remote management apparatus 12 constitute a functional block as illustrated in FIG. The output unit 34 is a display, for example, and displays, for example, a change in building unit power consumption. In a power saving plan creation process described later, a control plan for the target reduction amount is displayed. The input unit 32 may be an input device such as a keyboard or a mouse. For example, a target reduction amount described later can be input. In addition, the registration contents of the demand control list can be set and changed through input to the input unit 32.

  FIG. 2 illustrates functional blocks of the remote management device 12. The remote management device 12 includes an amount input unit 50, a currency conversion unit 52, an amount distribution unit 54, a target maximum power calculation unit 56, a target reduction power amount calculation unit 58, a control plan unit 60, and an output unit 62 as arithmetic processing units. Is provided. The output unit 62 is connected to the output unit 34 which is a display.

  The remote management device 12 includes a property information storage unit 70, a distribution ratio storage unit 72, a power charge system storage unit 74, a power consumption actual measurement value storage unit 76, and an output restriction content storage unit 78 as storage units.

  A program for executing a power saving plan creation process to be described later is executed by the remote management device 12 which is a computer. Thereby, each resource such as the CPU 26, the memory 28, and the hard disk drive 30 of the remote management apparatus 12 is allocated, and each function unit illustrated in FIG. 2 is configured.

  The operation and effect of each functional block of the remote management device 12 will be outlined. The amount input unit 50 is inputted with the target reduction amount of the power charge for the predetermined building 11. The target reduction amount may be an annual amount or a monthly amount. Moreover, the currency of the target reduction amount may be, for example, the currency in which the remote management device 12 is installed.

  In the currency conversion unit 52, the target reduction amount input to the amount input unit 50 is converted into a currency-based amount in the region where the building 11 is installed. In the amount distribution unit 54, when the electricity charge is a two-part charge system of a fixed charge and a pay-as-you-go charge, the target reduction amount after conversion into the local currency is set to a reduction charge for the fixed charge and a reduction charge for the pay-as-you-go charge. Distributed.

  The target maximum power calculation unit 56 obtains a target maximum power [kW] that is a target reduction power according to the reduction amount for a fixed charge. In the target reduction power amount calculation unit 58, a target reduction power amount [kWh] corresponding to the reduction amount corresponding to the metered charge is obtained.

  In the control plan unit 60, in order to achieve the target maximum power [kW] and the target reduction power amount [kWh], an electric device subject to operation restriction and a control plan in which the restriction contents are defined are created. In other words, the control planning unit 60 uses at least one electric device and at least one output that satisfy the target reduced power amount based on the actual measured power consumption value and the output restriction content of each of the electric devices 20A to 20C installed in the building 11. Ask for restrictions.

  The created control plan is output from the output unit 62. When the output control plan is approved by an administrator (building owner or the like) of the building 11, an approval instruction is transmitted to the control planning unit 60. Thereafter, the control plan unit 60 transmits the approved control plan to the central management apparatus 10 of the building 11. The central management apparatus 10 controls the operation of the electric devices 20A to 20C based on the control plan.

  The property information storage unit 70 stores information on the building 11 and information on the area where the building 11 is installed. Specifically, as illustrated in FIG. 3, the property information storage unit 70 includes a building name, a building manager, an address, a location area, a currency, an exchange rate, a completion date, a building age, a total floor area, Information such as the number of floors is stored.

  As described above, the property information storage unit 70 stores the currency and the exchange rate. The currency indicates the currency (local currency) of the region (country) where the building 11 is built, and the exchange rate indicates the conversion ratio between the local currency and the currency of the target reduction amount input to the amount input unit 50. . Instead of the conversion ratio between the local currency and the currency of the target reduction amount input to the amount input unit 50, the conversion ratio between the local currency and the currency of the location (country) of the building manager may be used.

  Since the exchange rate fluctuates with time, it is preferable that the remote management device 12 periodically acquires and updates the exchange rate from the exchange rate or the like. As described above, since the exchange rate is stored in the property information storage unit 70, the property information storage unit 70 includes the exchange rate storage unit as a part thereof.

  The distribution ratio storage unit 72 is a ratio (distribution rate) for distributing the share of the target reduction amount into a fixed charge and a pay-as-you-go charge when the electricity charge system adopts a two-part charge system of a fixed charge and a pay-as-you-go charge. Is memorized. As will be described later, when the fixed fee is determined based on the maximum power consumption [kW] and the usage fee is determined based on the power consumption [kWh], according to the distribution ratio stored in the distribution ratio storage unit 72, Each burden is distributed (prorated).

  The distribution ratio in the distribution ratio storage unit 72 may be arbitrarily changed by an administrator of the building 11 through an input operation at the input unit 32, for example. For example, the distribution ratio may be changed in accordance with the change in the electricity rate system.

  The power rate system storage unit 74 stores a power rate system determined between the manager of the building 11 and the supply source (electricity provider) that supplies power to the building 11. For example, as illustrated in FIG. 4, the power rate system storage unit 74 stores information such as the power category of the received power, the rate plan, and the contract power company.

  For example, as a charge plan, a basic charge that is a fixed charge, a power charge that is a metered charge, and a renewable energy power generation promotion levy are stored in the power charge system storage unit 74. The electric energy charge is obtained by the following formula (1).

[Equation 1]
Electricity charge = Electricity charge unit price × Electric energy used ± Fuel cost adjustment amount (1)

  Of the above formula (1), the electric energy charge unit price is illustrated in FIG. In this example, the electric power charge unit price is determined in three stages: summer weekdays, weekdays other than summer, and holidays. The amount of fuel cost procurement is determined according to the price fluctuation of thermal fuel.

  In Equation (1), the power consumption is the main power of the building 11, that is, the total power consumption [kWh] of the building 11 unit, and is detected by the main power meter 22E. For example, as illustrated in FIG. 5, the power consumption (usage power amount) of each month is obtained by the main power meter 22E. Based on this value, the monthly electricity charge is calculated.

  In the example of FIG. 4, the unit price of electric power charges is determined according to the season and weekday / holiday division. In addition, the electric power charge unit price is changed according to the monthly power consumption of the main power. Such a charge system can be stored in the power charge system storage unit 74.

  For example, the power charge unit price may be changed depending on whether the monthly power consumption is less than 100 kWh, 100 kWh or more and less than 300 kWh, or 300 kWh or more. In this case, for example, the higher the monthly power consumption, the higher the electricity charge unit price.

  The renewable energy power generation promotion levy is obtained by the following formula (2).

[Equation 2]
Renewable energy power generation promotion levy = Renewable power generation promotion levy unit price x Electric energy used (2)

  Further, the basic charge, which is a fixed charge, is obtained by the following formula (3).

[Equation 3]
Basic charge = basic charge unit price x contract power x power factor ratio (3)

  In Equation (3), the basic rate unit price A [yen / kW] is stored in the power rate system storage unit 74 as illustrated in FIG. The power factor ratio is determined based on the ratio of active power and reactive power measured by the main power meter 22E.

  The contract power [kW] is determined based on the maximum power consumption [kW] in a predetermined period. For example, FIG. 6 illustrates the monthly maximum power consumption. In the graph of FIG. 6, the horizontal axis indicates the month, and the vertical axis indicates the monthly maximum power consumption [kW] detected by the main power meter 22E.

  In determining the contract power, when the maximum power consumption P_CD0 is detected in a certain month (for example, July), the contract power for each month is fixed to P_CD0 even if the maximum power consumption P_CD0 is below one year thereafter.

  For example, FIG. 7 illustrates the maximum power consumption [kW] for each day in July, and FIG. 8 illustrates the maximum power consumption [kW] for a predetermined day in July (for example, July 10). . In FIG. 8, a demand value that is an average value for 30 minutes of power consumption, which is an instantaneous value, is used as power consumption. As shown in FIG. 7, for example, only the power consumption of 15:00 to 15:30 on July 10 is P_CD0, and the power consumption at other times is less than the maximum power consumption P_CD0. , And contract power for one year from that is set to P_CD0.

  Considering this from the viewpoint of power saving, it becomes possible to lower the contract power simply by suppressing the power consumption on a specific date and time (for example, 15: 00 to 15:30 on July 10), and the contract power contract period It is possible to reduce the electricity charge for one year.

  It should be noted that the above-mentioned power charge system is a charge system widely adopted by Japanese electric power companies, and naturally the power charge system of electric power companies in other countries and regions is stored in the power charge system storage unit 74. Can be remembered.

  For example, in China (People's Republic of China), a two-part charge system consisting of a basic charge and a pay-as-you-go charge charged for the large-capacity consumer is used. As the electrical equipment in the building 11 is renewed to an energy-saving type, etc., the capacity of the power receiving equipment is basically the same unless the electrical equipment is replaced. In this case, the metered charge is reduced by reducing the power [kWh]. It is preferable to reduce it. That is, in the distribution ratio storage unit 72, basic charge: measured charge = 0: 100 may be set.

  Further, for example, in Sri Lanka, the power charge is configured in a two-part system of a basic charge and a pay-as-you-go charge. Therefore, in this case, by reducing the amount of power, both the metered rate and the basic rate can be reduced.

  The measured power consumption value storage unit 76 stores measured values of the main power [kW] and the main power [kWh] of the building 11 in which the central management device 10 connected to the remote management device 12 is installed. For example, the power [kW] detected by the main power meter 22E and the power amount [kWh] obtained by integrating the power [kW] are stored in the power consumption actual value storage unit 76. For example, the power consumption actual value storage unit 76 stores the power consumption [kWh] of the main power for each of FIG. 6 (monthly unit), FIG. 7 (single day unit), and FIG. 8 (time unit). In calculating the power consumption, the power consumption may be obtained by integrating the demand values of the main power [kW].

  The actual power consumption value storage unit 76 also stores actual power consumption [kW] and power consumption [kWh] of the electric devices 20A to 20C installed in the building 11. Further, in synchronization with the time change of the power consumption [kW] and the power consumption [kWh] of each electric device 20A to 20C, the time change of the operating state (temperature setting, air volume setting, etc.) of each electric device 20A to 20C is changed. It may be stored in the power consumption actual value storage unit 76.

  The output restriction content storage unit 78 stores the output restriction content for any of the electrical devices 20A to 20C installed in the building 11. The electrical devices 20 that are subject to output restriction may be all electrical devices in the building 11, and, for example, highly important electrical devices such as air conditioning in server rooms that require constant temperature control, are subject to output restriction. It may be excluded. The selection of the electric device subject to output restriction and the specific restriction content may be determined in advance based on discussions with the building administrator and the operator of the remote management device 12.

  FIG. 9 illustrates an output restriction target list for each electrical device 20 stored in the output restriction content storage unit 78. The output restriction list illustrated in the figure is based on so-called demand control, and a plurality of restriction levels (DmdLv) may be defined. As illustrated in the figure, the higher the restriction level is, the more the number of target electric devices 20 is increased, and the output restriction is strengthened (becomes stricter).

  For example, an output 25% cut is set for the air conditioning 1 at the limit level DmdLv1 in FIG. Specific contents of this output cut control are illustrated in FIGS. 10 and 11. 10 and 11, the horizontal axis represents time, and the vertical axis represents power consumption [kW]. The power consumption [kW] may be a demand value. The broken line indicates the actual measurement value, and the solid line indicates the predicted value when the output restriction is performed. Moreover, the power consumption shown by FIG. 10, FIG. 11 may be the measured value (past value) of the electric equipment (air conditioning 1) to which the output restriction was set.

  As specific contents of the output restriction, for example, when reducing the amount of power consumption per day, an equal restriction is executed in which the output is uniformly restricted over the entire time period as illustrated in FIG. May be. Further, as specific contents of the output restriction, a peak cut may be executed in which the output restriction is applied aiming at a time period in which the power consumption exceeds the target contract power P_Obj, as illustrated in FIG.

  Also, in FIG. 12 and FIG. 13, the monthly control content of the output cut control is set. Specific contents of this output cut control are illustrated in FIGS. 12 and 13. 12 and 13, the horizontal axis represents time, and the vertical axis represents power consumption [kWh]. The power consumption [kWh] may be an integrated value of demand values. The broken line indicates the actual measurement value, and the solid line indicates the predicted value when the output restriction is performed. The power consumption shown in FIGS. 12 and 13 may be an actual measurement value (past value) of an electric device (air conditioning 1) for which output restriction is set.

  As specific contents of the output restriction, for example, as illustrated in FIG. 12, an equal restriction in which the output is equally restricted over all months may be executed. Further, as specific contents of the output restriction, a peak cut may be executed in which the output restriction is applied aiming at a month in which the power consumption exceeds the target power WH_Obj, as illustrated in FIG.

<Power saving plan creation process (1)>
FIG. 14 illustrates a flowchart of a power saving plan creation process in the remote management device 12 according to the present embodiment. In this example, a process of creating a control plan for achieving power saving by reducing the amount of power [kWh] is illustrated.

  Note that the flowchart shown in FIG. 14 illustrates a control plan for achieving power saving only by reducing the usage fee. For this reason, the distribution rate is determined in the distribution rate storage unit 72 at a fixed charge: a metered charge = 0: 100 [%].

  With reference to FIGS. 1, 2, and 14, the target reduction amount is input to the amount input unit 50 of the remote management device 12 through an input operation on the input unit 32 of the remote management device 12. The target reduction amount may be, for example, an annual target reduction amount or a monthly target reduction amount. In order to make it possible to input the target reduction amount for each period, for example, an input field for selecting a power saving period (annual / month) on the display as the output unit 34 in addition to the input field for the target reduction amount. It may be provided. The power saving period selected in the input field is reflected as the control period of the subsequent control plan.

  The currency conversion unit 52 obtains from the property information storage unit 70 the exchange rate between the currency of the amount input from the property information storage unit 70 and the currency of the area where the building 11 is installed. Further, the currency conversion unit 52 calculates a conversion target reduction amount by converting the target reduction amount input to the amount input unit 50 into the currency of the region where the building 11 is installed based on the obtained exchange rate (S10). .

  In the money amount distribution unit 54, since the distribution rate of the metered charge is 100% as described above, the entire conversion target reduction amount is sent to the target reduction power amount calculation unit 58 as it is. The target reduction power amount calculation unit 58 obtains the power rate system data determined for the building 11 from the power rate system storage unit 74, and sets the target reduction power amount ΔWH_Obj based on the data and the converted target reduction amount. Obtain (S12).

  For example, as described above, when the metered charge is the sum of the electricity charge and the renewable energy power generation promotion levy, the following expression (4) is obtained from the expressions (1) and (2).

[Equation 4]
Conversion target reduction amount = (Electricity charge unit price + Renewable power generation promotion levy unit price) x Target reduction electric energy ± Fuel cost adjustment amount (4)

  Substituting the conversion target reduction amount obtained in step S12 into the above equation (4), and further calculating the most recent power rate, the unit price of the electric energy rate, the unit price for promoting renewable power generation, and the fuel cost By substituting the adjustment amount into Equation (4), the target reduction power amount ΔWH_Obj is obtained. The obtained target reduction power amount ΔWH_Obj is sent to the control planning unit 60.

  The control planning unit 60 refers to the output restriction content storage unit 78 and sets an electric device subject to output restriction and its control content so as to satisfy the target reduction power amount ΔWH_Obj. Specifically, based on the output restriction list illustrated in FIG. 9, an electric device subject to output restriction and its control content are selected.

  For example, it is considered from the electric equipment set to DmdLv1 and the content of restriction, which has the lowest output restriction level, in other words, most easily accepted as a power saving measure. The control planning unit 60 sets the count m (m = 1 to 4) of the output restriction level to 1 (S14). Further, the control planning unit 60 extracts a list of output restriction levels DmdLv_m (= 1) from the output restriction content storage unit 78.

  The control planning unit 60 sets the count k of the electrical equipment set (registered) in the list of the output restriction level DmdLv_m (= 1) to the initial value 1 (S16). Further, based on the restriction content set for the count k (= 1) th electric device, a reduction power amount ΔWH_k [kWh] is calculated by executing the restriction content of the electric device (S18).

  For example, referring to FIG. 9, when the restriction content is an output 25% cut, the measured power consumption amount of the electric device is cut by 25%, and the reduced power amount ΔWH_k [kWh] is calculated. Alternatively, when the power reduction amount associated with the execution of the restriction content is known in advance or a predicted value is obtained, the power reduction amount ΔWH_k [kWh] corresponding to the restriction content is obtained.

  Note that the actual measurement value of the power consumption value of each electrical device that is a calculation reference for the reduced power amount ΔWH_k may be, for example, the power consumption value of each electrical device under a condition where no output restriction is applied. Further, for example, an electrical device that has already been subjected to some output restriction when an actual measurement value is detected may be excluded from the count k.

  Next, the control planning unit 60 determines whether or not the total reduction power amount ΣΔWH_k based on the electric device selected so far and the limitation content thereof is equal to or greater than the target reduction power amount ΔWH_Obj (S20). When ΣΔWH_k ≧ ΔWH_Obj, the control plan unit 60 creates a list (control plan list) that lists the electrical devices selected in steps S14 to S20 and their restriction contents, and outputs this to the output unit 62. (S22).

  This control plan list is once viewed by the administrator of the remote management device 12 and the administrator of the building 11, and the validity of the control contents is examined. If it is determined that the contents of the control plan list are valid, an instruction to the effect that the control plan is approved is sent to the control plan unit 60 (see FIG. 2), and the control plan unit 60 performs control according to the control plan. A command is sent to the central management device 10 of the building 11. On the other hand, if it is determined that the contents of the control plan list are not valid, the target amount is changed and the power saving plan creation process is executed again.

  Returning to step S20, when ΣΔWH_k <ΔWH_Obj, the control planning unit 60 determines whether or not the count k of the electrical equipment set (registered) in the list of the output restriction level DmdLv_m (= 1) is the maximum value k_max. Determine (S24). When the count k has not reached the maximum value k_max, the control planning unit 60 increments the count k of the electrical device (S30), and then returns the flow to step S18.

  When the count k of the electrical equipment reaches the maximum value k_max in step S24, the control planning unit 60 determines whether or not the count m of the output restriction level DmdLv_m is the maximum value m_max (S26). If the count m has not reached m_max, the control planning unit 60 increments the count m (S32) and then returns the flow to step S16.

  When the count m is incremented, ΣΔWH_k that has been accumulated up to that time may be reset to zero.

  On the other hand, if the count m of the output restriction level DmdLv_m has reached the maximum value m_max in step S26, it is assumed that the target amount cannot be achieved with the output restriction menu stored in the output restriction content storage unit 78. An error message is output to the output unit 62 (S28). For example, a message indicating that the target reduction amount should be reduced and the power saving plan creation process should be executed again is output.

  As described above, in the power saving support system according to the present embodiment, the control plan corresponding to the target reduction power amount based on the local currency in which the building 11 is installed is calculated only by inputting the target reduction amount. Therefore, for example, it is possible to compare control plans for target reduction amounts of buildings in a plurality of countries and regions on a single currency basis.

<Power saving plan creation process (2)>
15 and 16 illustrate a flowchart of a power saving plan creation process in the remote management device 12 according to the present embodiment. The processing with the same step codes as those in the flowchart of FIG.

  In the flowcharts illustrated in FIG. 15 and FIG. 16, the target contract power P_Obj and the target reduction power amount ΔWH_Obj are obtained according to the target reduction amount, and electric devices that satisfy both of them and the restriction contents thereof are set. .

  2 and 15, after the target reduction amount is converted into the local currency, the amount distribution unit 54 fixes the conversion target reduction amount based on the distribution ratio stored in the distribution ratio storage unit 72. Distribute to the charge (basic charge) and the pay-as-you-go charge. Further, the target contract power P_Obj [kW] and the target reduced power amount ΔWH_Obj [kWh] are obtained based on the target reduction amount after distribution and the power charge system (S42).

  The target reduction power amount ΔWH_Obj [kWh] can be obtained using Equation (4) as described above. The target contract power P_Obj [kW] can be obtained using Equation (3). Specifically, the target reduction amount after distribution (for a fixed fee) is substituted into the basic fee in Expression (3). Furthermore, when the basic rate unit price acquired from the power rate system storage unit 74 and the power factor ratio acquired from the main power meter 22E are substituted into Expression (3), the target contract power P_Obj is obtained. For example, the target contract power P_Obj is set to a value lower than the contract power P_CD0 in the actual measurement value as illustrated in FIG. As will be described later, the contents of the output restriction are determined in order to reduce the power that protrudes from the target contract power P_Obj, which is indicated by hatching in FIG.

  In steps S14 to S32, as in FIG. 14, an electric device that satisfies the target reduction power amount ΔWH_Obj [kWh] and the restriction content thereof are determined.

  Further, in step S20, when an electric device satisfying the target reduction power amount ΔWH_Obj [kWh] and its restriction content are determined, the process proceeds to FIG. 16 and the maximum power consumption (maximum demand value) of the main power is within the target contract power P_Obj. It is determined whether or not it fits (S48).

  When the maximum power consumption of the main power falls within the target contract power P_Obj, the control planning unit 60 creates a list (control plan list) that lists the electric devices selected in steps S14 to S20 and the contents of the restrictions. This is output to the output unit 62 (S50). As in the flowchart of FIG. 14, the control plan list is viewed by the administrator of the remote management device 12 and the administrator of the building 11, and the validity of the control contents is examined.

  If it is determined that the contents of the control plan list are valid, an instruction to the effect that the control plan is approved is sent to the control plan unit 60 (see FIG. 2), and the control plan unit 60 performs control according to the control plan. A command is sent to the central management device 10 of the building 11. On the other hand, if it is determined that the contents of the control plan list are not valid, at least one of the target amount and the distribution ratio is changed, and the power saving plan creation process is executed again.

  Returning to step S48, when it is predicted that the maximum power consumption of the main power will exceed the target contract power P_Obj, the control planning unit 60 sets the maximum count k of the electric devices set (registered) in the list of the output restriction levels DmdLv_m. It is determined whether or not the value is k_max (S52). When the count k has not reached the maximum value k_max, the control planning unit 60 increments the count k of the electric device (S58) and then returns the flow to step S46.

  In step S46, the control planning unit 60 calculates the reducible power ΔP_k [kW] based on the output restriction content set for the selected electrical device. For example, the reducible power ΔP_k [kW] is calculated from the difference between the power consumption of the electrical device in the actual measurement value and the power consumption (predicted value) associated with the execution of the output restriction content.

  Returning to step S52, when the count k of the electrical equipment reaches the maximum value k_max, the control planning unit 60 determines whether or not the count m of the output restriction level DmdLv_m is the maximum value m_max (S54). If the count m has not reached m_max, the control planning unit 60 increments the count m (S60), and then returns the flow to step S44. In step S44, the count k of the electric device is reset to 1.

  With this reset, the total amount ΣΔWH_k of the reducible electric energy is reset to 0. However, since the level of the output restriction list is raised to one level, the restriction becomes more severe, and the sum ΣΔWH_k of the reducible power amount becomes equal to or greater than the target reduced power amount ΔWH_Obj. Therefore, the relationship of ΣΔWH_k ≧ ΔWH_Obj is continuously maintained.

  If the count m of the output restriction level DmdLv_m has reached the maximum value m_max in step S54, it is determined that the target amount cannot be achieved in the output restriction menu stored in the output restriction content storage unit 78, and an error occurs. A message is output to the output unit 62 (S56). For example, a message is output indicating that the target reduction amount should be reduced or the amount distribution rate should be corrected and the power saving plan creation process executed again.

  As described above, in the power saving support system according to the present embodiment, the control plan corresponding to the target reduction power amount based on the local currency in which the building 11 is installed is calculated only by inputting the target reduction amount. Therefore, for example, it is possible to compare control plans for target reduction amounts of buildings in a plurality of countries and regions on a single currency basis.

  Based on the control plan approved by the building manager or the like, the control planning unit 60 generates a control command and transmits the control command to the central management device 10 of the building 11. The central management apparatus 10 controls the operation of the controlled electrical devices 20A to 20C based on the received control command.

  When a period (for example, one year) determined in the control plan elapses, a difference in power rate between before and after the execution of the control plan is obtained, and the remote management device 12 determines whether this has reached the target reduction amount. It is determined by. When the difference amount does not reach the target reduction amount, the output restriction content may be adjusted and utilized for the next control plan creation.

  10 Central management device, 11 Building, 12 Remote management device, 14 Sub-controller, 15 Gateway device, 16 Communication line, 20 Electrical equipment, 22 Sensor, 22E Main power meter, 50 Amount input unit, 52 Currency conversion unit, 54 Amount distribution 56, target maximum power calculation unit, 58 target reduction power amount calculation unit, 60 control plan unit, 62 output unit, 70 property information storage unit, 72 distribution ratio storage unit, 74 power charge system storage unit, 76 actual measurement of power consumption Value storage unit, 78 Output restriction content storage unit.

Claims (5)

A central management device capable of controlling the operation of a plurality of electrical devices installed in the building and installed in the building;
A remote management device capable of transmitting a control command to the central management device remotely from the building; and
A power saving support system comprising:
The remote management device is:
A monetary value input part for entering the target reduction amount;
An exchange rate storage unit for storing an exchange ratio between the input currency of the target reduction amount and a local currency that is a local currency in which the building is installed;
A power rate system storage unit that stores a power rate system determined between an owner of the building and a supplier supplying power to the building;
An amount distribution unit that distributes the conversion target reduction amount obtained by converting the target reduction amount into the amount of the local currency into a reduction amount corresponding to a fixed fee and a reduction amount corresponding to a metered amount charge of the power rate system;
A target maximum power calculation unit for obtaining a target maximum power that is a target reduction power according to the reduction amount of the fixed fee;
A target reduction power amount calculation unit for obtaining a target reduction power amount corresponding to the reduction amount for the metered rate; and
An output restriction content storage unit in which the output restriction content for any electrical device installed in the building is defined;
Based on the output restriction content, a control planning unit that obtains at least one electric device that satisfies the target maximum power and the target reduced power amount and at least one output restriction content;
An input unit capable of changing a distribution ratio for distributing the conversion target reduction amount into the reduction amount for the fixed fee and the reduction amount for the subordinate fee of the amount distribution unit;
A power saving support system. The power saving support system according to claim 1 ,
The target reduction power amount calculation unit obtains the target reduction power amount based on a reduction amount for the metered amount charge and the power charge system,
Power saving support system. The power saving support system according to claim 2,
The fixed fee is determined according to the maximum power consumption of the main power in the building,
The remote management device includes a target maximum power calculation unit that calculates a target maximum power based on a reduction amount for the fixed charge and the power charge system,
The control planning unit obtains at least one electric device and at least one output restriction content that satisfy the target maximum power and the target reduction power amount,
Power saving support system. A remote management device capable of controlling the operation of a plurality of electrical devices installed in a building and capable of transmitting a control command from a distance from the building to a central management device installed in the building. There,
A monetary value input part for entering the target reduction amount;
An exchange rate storage unit for storing an exchange ratio between the input currency of the target reduction amount and a local currency that is a local currency in which the building is installed;
A power rate system storage unit that stores a power rate system determined between an owner of the building and a supplier supplying power to the building;
An amount distribution unit that distributes the conversion target reduction amount obtained by converting the target reduction amount into the amount of the local currency into a reduction amount corresponding to a fixed fee and a reduction amount corresponding to a metered amount charge of the power rate system;
A target maximum power calculation unit for obtaining a target maximum power that is a target reduction power according to the reduction amount of the fixed fee;
A target reduction power amount calculation unit for obtaining a target reduction power amount corresponding to the reduction amount for the metered rate; and
An output restriction content storage unit in which the output restriction content for any electrical device installed in the building is defined;
Based on the output restriction content, a control planning unit that obtains at least one electric device that satisfies the target maximum power and the target reduced power amount and at least one output restriction content;
An input unit capable of changing a distribution ratio for distributing the conversion target reduction amount into the reduction amount for the fixed fee and the reduction amount for the subordinate fee of the amount distribution unit;
A remote management device comprising: Against the operation of a plurality of electrical devices installed in a building be controllable central management device installed in the building, as a remote management apparatus capable of transmitting a control command from a remote spaced from the building A power saving support program that makes a computer function ,
The computer,
Amount input means for inputting the target reduction amount ,
An exchange rate storage means for storing an exchange ratio between the currency of the input target reduction amount and a local currency which is a currency of a region where the building is installed ;
A power charge system storage means for storing a power charge system determined between an owner of the building and a supplier supplying power to the building ;
An amount distribution means for distributing the conversion target reduction amount obtained by converting the target reduction amount into the amount of the local currency into a reduction amount for a fixed charge and a reduction amount for a metered charge in the power charge system,
Target maximum power calculation means for obtaining a target maximum power that is a target reduction power according to the amount of reduction for the fixed fee;
A target reduction power amount calculating means for obtaining a target reduction power amount corresponding to a reduction amount for the metered rate;
Output restriction content storage means for defining the output restriction content for any of the electrical devices installed in the building ,
Control plan means for obtaining at least one of the electric equipment satisfying the target maximum power and the target reduction power amount and at least one of the output restriction contents based on the output restriction contents ;
An input means capable of changing a distribution ratio of the amount distribution means for distributing the conversion target reduction amount into the reduction amount for the fixed fee and the reduction amount for the subordinate fee;
Power-saving support program that functions as