JP2017134764A - Charge calculation method, charge calculation device, and charge calculation program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new system for performing a charge request to a power use of each user, while binding the users by a retail entrepreneur of power and suppressing the excess of a power use amount as a whole.SOLUTION: A charge calculation method calculates an usage fee of power relating to power incoming facilities of a plurality of users connected to a commercial power source provided by an electric power supplier and an energy supply facility controllable by a retail entrepreneur of the power. Specifically, a computer executes: a step of acquiring the measured power consumption in a predetermined period from a measurement device provided in each power incoming facility for measuring a measured power consumption in the power incoming facility; and an usage fee calculation step of adding the usage fee based on a decrement of the power received from the commercial power source by the energy supply from the energy supply facility where the energy is operated or output when a sum total of the measured power consumption in the plurality of power incoming facilities exceeds the predetermined threshold value and the usage fee for the power actually supplied from the commercial power supply source and calculating as a billing amount to the users.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a charge calculation method, a charge calculation apparatus, and a charge calculation program.

  Conventionally, a technology is known that measures the amount of power used in a building and uses power from a power supply facility other than commercial power in addition to commercial power at peak power consumption, etc., to suppress excess contract power. ing. Examples of power supply facilities other than commercial power sources include power generation facilities that use fuel (gas, oil, hydrogen, etc.) and renewable energy (sunlight, wind power, etc.), these power generation facilities, and night commercial power And the like.

  Also, the load power consumption is detected by the power detection means. If the detection result is less than the set value, the load is operated only with the commercial AC power supply. If the set value is exceeded, power is supplied from the solar cell. Alternatively, a technique has been proposed in which a power storage device is discharged and a load is operated by the power supply or discharge and a commercial AC power supply (Patent Invention 1). In this way, it is possible to avoid excess contract power due to peak cuts.

In addition, the so-called PPS (Power Producer and Supplier: corresponding to the “electric power retailer” in this specification) exceeds the contracted power specified in the connection supply contract with the general electric utility. Contracts that pay an overage fee are common. Therefore, even in PPS, there is a demand for keeping the total amount of power consumed by consumers within the contract power with general electric utilities.

JP-A-11-332128

  Conventionally, a technique for performing peak cut using a power generation facility for private use has been proposed, but it may be difficult for a small-scale customer to make a capital investment. In the present invention, in view of such problems, a power retailer (hereinafter simply referred to as a “retailer”) bundles consumers and suppresses an excess of power consumption as a whole. It aims to provide a new system that charges for usage.

  In the charge calculation method according to the present invention, the charge for using electric power is calculated for a plurality of power receiving facilities connected to a commercial power supply provided by an electric power company and an energy supply facility that can be controlled by the electric power retailer. calculate. Specifically, a step of obtaining the power usage amount in a predetermined period from a measuring device provided in each power receiving facility and measuring the power usage amount in the power receiving facility, and the sum of the power usage amounts in a plurality of power receiving facilities is predetermined. Charges based on the decrease in power received from the commercial power supply due to the energy supply from the energy supply facility that increases operation or output when the threshold is exceeded, and charges for the power actually supplied from the commercial power supply And the computer executes a charge calculation step of calculating the amount charged to the consumer.

In this way, the power retailer can bundle the consumers, and the energy supply facilities provided in the power receiving facilities of the consumers can be appropriately operated while matching the power charges to be paid by the consumers. Here, the “power receiving facility” refers to a facility that requires power supply, and is, for example, a building having a power distribution facility (unit of charge billing). In addition, even if there is an excess of power usage that cannot be absorbed only within the power receiving facilities of individual consumers, the overall consumer needs to exceed the amount of power usage defined between retailers and general electric utilities. It becomes possible to suppress. In addition, it is possible to provide a system that appropriately charges the power usage of each consumer in such a system.

  Further, the energy supply facility may be provided in a power receiving facility of a consumer and supply energy to the power receiving facility. In this way, at least some of the power receiving facilities can be provided with equipment that realizes DSM (Demand Side Management) in cooperation with the retailer and can perform load management.

  Also, in the charge calculation step, the price per unit amount is lower than the charge for the power consumption using the grid supplied from the electric power provider for the charge for the energy usage using the grid supplied from the energy supply facility. You may make it carry out discount so that it may become. In a configuration where a retailer performs DSM by controlling the energy supply equipment provided on the customer side, if the energy supply equipment is operated, the operation time as a measure for BCP (Business Continuity Plan) decreases. Because it may take time and effort on the part of the customer during operation, there is a charge for the energy usage using the grid supplied from the energy supply equipment and the power usage using the grid supplied by the electric power company. You may make it make a difference with the charge with respect to.

  In addition, the energy supply facility is operated when the amount of power used in the power receiving facility exceeds the threshold value in the power receiving facility at the power receiving facility of the customer, and the threshold value in the power receiving facility is changed in the control step. Thus, the operation of the energy supply facility in the power receiving facility of the consumer may be promoted. Specifically, the energy supply facility may be controlled by the consumer side and the retailer side performing such processing.

  The energy supply facility may be a power generation device that generates electricity using gas, fuel oil, or hydrogen and can be used as an emergency power source or a standby power source. In this way, the energy supply facility becomes one of means for realizing the BCP, which leads to an improvement in the added value of the power receiving facility of the customer.

  In addition, the charge calculation method according to another aspect of the present invention relates to the energy supply for a plurality of customer facilities connected to the supply base of the energy supplier and the energy supply device that can be controlled by the energy retailer. Calculate usage fees. Specifically, the step of obtaining the energy usage amount in a predetermined period from a measuring device provided in each facility and measuring the energy usage amount in the facility, and the sum of the energy usage amounts in a plurality of facilities has a predetermined threshold. Charges based on the decrease in energy received from the supply base due to energy supply from the energy supply equipment that is operated or output is increased when exceeded, and charges for energy actually supplied from the supply base The computer executes a charge calculation step of calculating the amount charged to the consumer as a charge amount.

  In this way, the present invention may be applied to usage charges for various energy such as gas (city gas, etc.) as well as electric power.

  In addition, the content of the means for solving the said subject can be combined as much as possible within the range which does not deviate from the subject and technical idea of this invention. The contents of the means for solving the problem can be provided as a computer or a system including a plurality of devices, or a program executed by the computer. You may make it provide the recording medium holding a program.

  ADVANTAGE OF THE INVENTION According to this invention, while the retailer of electric power bundles a consumer, while suppressing the excess of an electric power usage as a whole, the new system which charges with respect to the electric power usage of each consumer can be provided.

It is a figure which shows typically the structure of the system which concerns on embodiment. It is a figure for demonstrating the relationship between electric power used and contract electric power. It is a block diagram which shows an example of a function structure of the system which concerns on embodiment. It is an apparatus block diagram which shows an example of a computer. It is a processing flowchart which shows an example of the process performed by the consumer side. It is a processing flowchart which shows an example of the process performed by the retailer side. It is a processing flowchart which shows an example of a charge calculation process. It is a figure which shows typically the structure of the system which concerns on a modification.

  Embodiments of the present invention will be described with reference to the drawings. In addition, embodiment described below is only an illustration and this invention is not limited to embodiment described below.

<Embodiment>
FIG. 1 is a diagram schematically showing a configuration of a system according to the present embodiment. The system includes one or more general electric utility facilities (also simply referred to as “electric utilities”) 1 (1a and 1b in FIG. 1) and retailer facilities (also simply referred to as “retail operators”) 2. 1 or more power receiving facilities (also simply referred to as “customers”) 3 (in FIG. 1, 3a to 3c). The electric power company 1 is specifically a facility of a general electric power company, such as a power plant. The consumer 3 is a user of electricity contracted with a retailer, for example, a hospital, an office building, a factory, or the like. The electric power company 1 and the consumer 3 are connected via a power system 6 such as a power transmission network. The electric power company 1 and the power system are also collectively referred to as “commercial power supply”. Note that a customer 5 who is not contracted with a retailer is also connected to the power system 6. In this embodiment, it is assumed that at least some of the consumers 3 (3a and 3c in FIG. 1) have an energy supply facility 4 such as a power generation device or a heat storage device. The retailer 2 is a facility of a so-called specific scale electric power supplier (PPS: Power Producer and Supplier). It is assumed that the retailer has contracted with the customer 3 surrounded by the dotted rounded rectangle and supplies power to the customer 3 through the power transmission network of the general electric company. The retailer 2 may have a power generation facility and supply power using the power transmission network of the power company as commercial power generated by the power generation facility, or may have a power generation facility. It does not have to be. Further, the retailer 2 monitors the amount of power used by the customer 3 who contracts with the retailer 2 via a communication network such as the Internet (the solid line that bends at right angles in FIG. 1). In addition, as shown by the broken lines that are bent at right angles, the monitoring panel and the computer provided in the retailer 2 are energy supply equipment provided in the customer 3 and the customer 3 via a communication network such as the Internet or a dedicated line. 4, the retailer 2 directly or indirectly controls the operation of the energy supply facility 4. Specifically, the retailer 2 determines that the total amount of power used by each consumer is based on the amount of contracted power that is predetermined with the electric utility or the amount of power that can be supplied by the retailer 2 The energy supply facility 4 is appropriately operated or stopped so as not to exceed the contract power amount between the power provider and the electric power company. Moreover, the energy supply equipment 4 used for operation may be one, and the energy generated there may be allowed to be accommodated to a consumer 3 other than the consumer in which the equipment is installed.

FIG. 2 is a diagram for explaining the relationship between power consumption and contract power. In the graph of FIG. 2, the vertical axis represents power and the horizontal axis represents time. For example, in the contract between the electric power company 1 and the retailer 2, a contract power amount that is the power amount every 30 minutes scheduled to be used is determined. The contract power amount can be represented by a graph as shown by a solid line in FIG. 2, for example. The retailer 2 can also procure the contract power amount as a whole by contracting with a plurality of electric utilities 1. In this embodiment, the retailer 2 controls the amount of power used, which is the total amount of power used by the customer 3, so as not to exceed the contracted power amount. Here, if the actual power consumption exceeds the contracted power consumption as shown by the broken line in FIG. 2, an excess charge to the electric power company 1 occurs. In order to avoid this, in this embodiment, the retailer 2 operates the energy supply equipment 4 of any of the consumers 3, and as shown by arrows in FIG. As such, the usage amount of the commercial power source is controlled so as to be within the contract usage amount with the electric power company 1.

  Also in the contract between the retailer 2 and the customer 3, the amount of power used for each time zone as shown in FIG. 2 is determined. The retailer 2 calculates the charge by integrating the usage amount of the electric power supplied from the electric company 1 and the usage amount of the energy supplied from the energy supply facility 4 for the energy usage of the consumer 3. .

  FIG. 3 is a block diagram illustrating an example of a functional configuration of the system according to the present embodiment. The system includes an electric utility 1, a retailer 2, and a customer 3. In addition, the electric utility 1 and the customer 3 may exist in multiple numbers, respectively. Moreover, the customer 3 of FIG. 3 demonstrates as what is a building which has the energy supply equipment 4. FIG.

  The retailer's facility indicated as the retailer 2 is a computer connected to a network, for example, and includes a power consumption monitoring unit 21, a remote control unit 22, a charge calculation unit 23, and a storage unit 24. The used power monitoring unit 21 continuously receives the used power amount from each of the customers 3 and monitors the contracted power amount as a whole so as not to exceed it. The received power consumption is held in the storage unit 34 that is a storage device included in the computer. When the total amount of power used exceeds a predetermined threshold determined for the entire consumer, the remote control unit 22 operates the energy supply facility 4 possessed by any of the consumers 3 and uses the power used from the commercial power source. Reduce. It is assumed that the predetermined threshold value is stored in the storage unit 34 in advance. Further, the charge calculation unit 23 calculates a charge based on the total of the power used from the commercial power supply and the power used from the energy supply facility 4 for the power usage of the consumer 3. The charge calculation unit 23 may add the excess charge when the contract power set for each time zone is exceeded in the contract with each consumer 3.

The customer 3 includes a power consumption measuring unit 31, a load 32, a control unit 33, a storage unit 34, and an energy supply facility 4. The used power measuring means 31 is a watt-hour meter connected to an electric device, an existing monitoring panel, or the like. The load 32 is energy use facilities such as lighting, air conditioning, and other electric devices that the customer 3 has (here, all of the energy use destinations of the power receiving facility are indicated). The control unit 33 continuously transmits the power usage amount of the consumer 3 to the retailer 2 or operates the energy supply facility 4 autonomously or in response to an instruction from the retailer 2. The communication function is realized using a wired or wireless existing communication line. For example, communication may be performed via a fixed telephone or a multifunction peripheral, or communication may be performed via a mobile phone communication network or the like. Further, the control unit 33 operates the energy supply facility 4 when the used power measured by the used power measuring unit 31 exceeds a predetermined threshold stored in the storage unit 34. Further, the control unit 33 receives the instruction from the retailer 2 and changes the predetermined threshold value stored in the storage unit 34, thereby causing the control unit 33 to supply energy even when the power used by the consumer 3 exceeds the predetermined threshold value. The equipment 4 is operated. In this manner, the retailer 2 may indirectly operate the energy supply facility 4. The energy supply equipment 4 includes a diesel power generation device, a gas turbine power generation device, a fuel cell using hydrogen as a fuel, a power generation device that uses renewable energy such as solar power generation and wind power generation, electric power generated by these devices, and nighttime It is a power supply facility other than a commercial power source, such as a power storage device that stores power. The energy supply facility 4 may be used as an emergency power generator. In this case, for example, a plurality of units can be operated alternately as a set, and in the charge calculation described later, a charge corresponding to the use of commercial power can be used as a reference for the additional operation of one surplus. Further, the energy supply equipment 4 may be provided by a retailer and installed in a customer's facility or site.

<Device configuration>
FIG. 4 is an apparatus configuration diagram illustrating an example of a computer. The control part 33 and the memory | storage part 34 of the retailer 2 or the consumer 3 are computers as shown, for example in FIG. A computer 1000 shown in FIG. 4 includes a CPU (Central Processing Unit) 1001 and a main storage device 100.
2, an auxiliary storage device (external storage device) 1003, a communication IF (Interface) 1004, an input / output IF (Interface) 1005, a drive device 1006, and a communication bus 1007.
The CPU 1001 performs processing and the like according to this embodiment by executing a program. The main storage device 1002 caches programs and data read by the CPU 1001 and develops a work area of the CPU. Specifically, the main storage device is a RAM (Random
Access Memory) and ROM (Read Only Memory). The auxiliary storage device 1003 stores programs executed by the CPU 1001, setting information used in the present embodiment, and the like. Specifically, the auxiliary storage device 1003 is an HDD (Hard-disk Drive), an SSD (Solid State Drive), an eMMC (embedded Multi-Media Card), a flash memory, or the like. The main storage device 1002 and the auxiliary storage device 1003 work as the storage unit 24 of the retailer 2 and the storage unit 34 of the customer 3. The communication IF 1004 transmits / receives data to / from other computers. The retailer 2 and the customer 3 are connected to the network via the communication IF 1004. The communication IF 1004 is specifically a wired or wireless network card or the like. The input / output IF 1005 is connected to the input / output device and accepts input from the user or outputs information to the user. Specifically, the input / output device is a keyboard, a mouse, a display, a touch panel, or the like. The drive device 1006 reads data recorded on a storage medium such as a magnetic disk, a magneto-optical disk, and an optical disk, and writes data to the storage medium. The above components are connected by a communication bus 1007. A plurality of these components may be provided, or some of the components (for example, the drive device 1006) may not be provided. Further, the input / output device may be integrated with the computer. In addition, the program executed in this embodiment is provided via a portable storage medium readable by the drive device 1006, a portable auxiliary storage device 1003 such as a flash memory, a communication IF 1004, and the like. It may be. When the CPU 1001 executes the program, the above-described computer is operated as, for example, the control unit 33 and the storage unit 34 of the retailer 2 and the customer 3 shown in FIG. In addition, at least a part of the configuration of the illustrated retailer 2 or the like may exist on the network. For example, an aspect such as a so-called cloud provided to a user by one or more servers that bear a part of the above configuration may be used.

<Customer side processing>
FIG. 5 is a process flow diagram illustrating an example of a process executed in the customer 3. This process is continuously executed at a predetermined timing. The shorter the period, the faster the power consumption of the customer 3 can be dealt with. However, since the amount of processing and the amount of communication increase, an appropriate execution timing is set. Further, for example, the execution interval of this process may be different between each of the consumers 3 according to the usage of the power of the customer 3, the size of the planned power usage, and the like.

  The power consumption measuring means 31 of the consumer 3 measures the amount of power used in each facility of the consumer 3, and the control unit 33 transmits the measured value to the retailer 2 (FIG. 5: S1). In this step, the total amount of power used in the facility of the customer 3 measured by a watt-hour meter, a monitoring panel, or the like is transmitted to the retailer 2. On the other hand, the retailer 2 can continuously receive the power usage from each of the consumers 3 and monitor the total power usage.

  Moreover, the control part 33 of the consumer 3 judges whether the electric power consumption in the facility of the consumer 3 is larger than a predetermined threshold value in a facility (S2). The in-facility threshold is a value used as a reference for controlling the processing according to the present embodiment in the facility of the customer 3 and is stored in the storage unit 34 in advance. The in-facility threshold may be changed based on communication from the retailer 2 as will be described later. Initially, for example, a value that is approximately 80% of the contract power value between the retailer and the consumer, a value obtained by subtracting a predetermined value from the contract power value, and the like are set as the in-facility threshold. It may be.

  And when it is judged that the sum total of the electric power consumption in the facility (power receiving facility) of the consumer 3 is below a predetermined in-facility threshold (S2: NO), the consumer 3 is supplied from the electric power company 1. The commercial power supply is used only to cover the power used in the facility (S3). That is, in this step, the control unit 33 does not operate the energy supply facility 4.

  On the other hand, when it is determined that the total amount of power used in the facility of the customer 3 is larger than the predetermined in-facility threshold (S2: YES), the control unit 33 of the customer 3 determines the amount of power used in the facility. Accordingly, the energy supply equipment 4 is operated (S4). In this step, a diesel power generation device, a gas turbine power generation device, a renewable energy utilization type power generation device, a power storage device, and the like are operated. Moreover, the output of the energy supply equipment 4 is increased as the difference between the power usage amount of the consumer 3 and the in-facility threshold is larger. In other words, in addition to power supply from the commercial power source, power is supplied from the energy supply facility 4 to the excess of the in-facility threshold among the power used by the load 32. It should be noted that the power supply is supplied from the commercial power source for the portion exceeding the upper limit of the output of the energy supply facility 4.

  Further, when the energy supply facility 4 is operated, the in-facility power consumption measured in S1 in the subsequent processing is the sum of the amount of power supplied from the commercial power source and the amount of power supplied from the energy supply facility 4 It shall be a value.

  On the customer side, by continuously executing the above processing, the energy supply equipment 4 is operated for each facility of the customer, and the amount of power supply from the commercial power supply exceeds a predetermined threshold value. Can be reduced. As will be described later, the remote control unit 22 of the retailer 2 may communicate with the control unit 33 of the customer 3 to change the in-facility threshold via the network. When receiving a command from the retailer 2, the control unit 33 updates the in-facility threshold held in the storage unit 34. Thereby, the conditions for operating the energy supply equipment 4 in S2 change. That is, the remote control unit 22 of the retailer 2 can control the power usage of the plurality of consumers 3 as a whole.

<Retailer side processing>
FIG. 6 is a process flow diagram illustrating an example of a process executed by the retailer 2. The power usage monitoring unit 21 of the retailer 2 receives the power usage amount in the facility from the customer 3 (FIG. 6: S11). In this step, the remote control unit 22 of the retailer 2 receives the data transmitted by the control unit 33 of the customer 3 in S1 of FIG. In addition, the remote control unit 22 stores the power usage amount in the storage unit 24 in association with the customer and the date and time. Note that the usage amount of power supplied from the commercial power source and the usage amount of power supplied from the energy supply facility 4 may be stored separately. The amount of power used supplied from the commercial power supply may be received from each customer 3, and the amount of power used supplied from the energy supply facility 4 to each customer 3 is from the energy supply facility 4 for each customer 3. You may receive it.

The power usage monitoring unit 21 adds up the power usage amounts received from the one or more consumers 3 and calculates the power usage amount for all the customers contracted with the retailer (S12). Note that the summation in this step may be made by selecting the larger value of the actual power consumption and the in-facility threshold value for each consumer. If it does in this way, the electric power use to about contract electric power amount will be ensured in each consumer. In addition, the amount of power used by all consumers is also referred to as facility group power usage.

  Then, the power usage monitoring unit 21 determines whether or not the facility group power usage is greater than a predetermined facility group threshold (S13). The facility group threshold is a value used as a reference for the retailer 2 to control the power usage of the entire consumer, and is stored in the storage unit 24 in advance. In addition, the facility group threshold value is set in advance to a value lower than the amount of power that can be supplied, for example, based on the amount of power that can be supplied by a retail electric company.

  Further, when it is determined that the facility group power consumption is larger than the predetermined facility group threshold (S13: YES), the remote control unit 22 of the retailer 2 sets the in-facility threshold of at least one of the consumers 3 Change (S14). In other words, in this step, control is performed so that the amount of power supplied from the energy supply facility 4 having the capacity to increase the output among the energy supply facilities 4 of the consumer 3 is increased.

Specifically, a predetermined value may be reduced with respect to the in-facility threshold value set for each of the consumers 3. For example, it can be realized by the following processes (1) to (3).
(1) The power supply amount from any energy supply equipment 4 is increased by setting the in-facility thresholds of all the consumers 3 to 80% of the original value or the like.
(2) The predetermined value is reduced with respect to the in-facility threshold set for each of the consumers 3. For example, the power supply amount from any of the energy supply facilities 4 can be increased by setting the in-facility thresholds of all the consumers 3 to a value that is uniformly reduced by 10 kW from the original value.
(3) Lower the in-facility threshold by giving priority to the customer 3 whose power consumption in the facility has not reached the in-facility threshold of the customer. At this time, the in-facility threshold may be lowered by giving priority to the customer 3 whose power usage in the facility is close to the in-facility threshold.
For example, by lowering the in-facility threshold by the processes (1) to (3), the reference value is changed in S2 of FIG. 5, and the energy supply equipment 4 is newly operated or operated in S4. The output of the energy supply equipment 4 is increased. That is, the retailer 2 can control the operation of the energy supply equipment that the customer 3 has.

  Further, the fee calculation unit 23 of the retailer 2 determines whether it is time to calculate the fee (S15). For example, it is assumed that the retailer 2 calculates a charge for the power usage of the consumer at a predetermined timing such as monthly. Further, it is assumed that the schedule for performing the charge calculation process is stored in the storage unit 24 in advance. The determination in this step is actually realized by starting the scheduler independently of the power consumption monitoring (S11 to S12) of the customer 3 and the control of the energy supply facility 4 (S13 to S14). There may be.

  If it is determined that it is time to calculate the fee (S15: YES), the fee calculator 23 executes a fee calculation process (S16).

  FIG. 7 is a process flowchart showing an example of the charge calculation process. First, the charge calculation unit 23 calculates a basic charge for each consumer based on the in-facility power consumption (FIG. 6: S21). In this step, a charge is calculated for the sum of the power supplied from the commercial power source and the power supplied from the energy supply facility 4. In other words, the charge corresponding to the reduction in power supplied from the commercial power supply and the charge for the power actually supplied from the commercial power supply are added together. The energy supply equipment 4 is for generating electric power at a customer's facility, and is billed similarly to the electric power supplied from a commercial power source.

  Moreover, the charge calculation unit 23 may add the excess charge to the power used by the consumer 3 after exceeding the contract power predetermined for each consumer 3 (S22).

  Moreover, you may make it the charge calculation part 23 discount a charge with respect to the electric power supplied from the energy supply equipment 4 provided in the facility or site of the consumer 3 (S23). As a result, for example, when the energy supply facility is operated, there is a possibility that the operable time as a BCP countermeasure may be reduced, and it may be time-consuming for the customer side, and it is possible to set a fee considering this. In addition, for example, a discount may be applied to a customer 3 who is allowed to install the energy supply equipment 4 in his / her facility.

  Thereafter, returning to the description of FIG. 6, after S16 or when it is determined that it is not time to calculate the fee in S15 (S15: NO), the retailer side processing is terminated.

  As described above, in this embodiment, a power retailer bundles consumers and appropriately operates energy supply equipment provided in a power receiving facility of the consumer. As a result, even if there is an excess of power usage that cannot be absorbed only within the power receiving facility of each individual customer, the overall consumer usage will exceed the amount of power usage determined between the retailer 2 and the electrical operator 1 Can be suppressed. In addition, it is possible to provide a system that appropriately charges the power usage of each consumer in such a system.

<Others>
The in-facility threshold value changed in S14 of FIG. 6 may be returned to the initial threshold value stepwise or directly as the power consumption of the customer 3 decreases. Specifically, the power supply amount from the energy supply equipment 4 is decreased or the operation is stopped by increasing the in-facility thresholds of all the consumers 3 by a predetermined percentage with respect to the original value. It may be. Further, a predetermined value may be added to the in-facility threshold of the customer 3. In addition, the in-facility threshold may be increased by giving priority to the customer 3 whose power consumption in the facility has not reached the initial in-facility threshold of the consumer. In this way, by increasing the in-facility threshold, the output of the operating energy supply equipment 4 can be reduced, or the operating energy supply equipment 4 can be stopped.

  Further, the retailer 2 may bear at least a part of the cost for the introduction and operation of the energy supply equipment 4 provided in the facility of the customer 3 or in the site.

<Modification 1>
FIG. 8 is a diagram schematically illustrating a configuration of a system according to a modification. As shown in FIG. 8, the energy supply equipment 4 may exist in a remote place separated from the power receiving facility of the consumer 3 and supply energy to the consumer 3. In this case, the consumer 3 uses the power supplied from the power grid or the power supplied from the energy supply facility 4, and in the process of S4, the control unit 33 of the consumer 3 operates the energy supply facility 4, or The output of the energy supply equipment 4 is increased. Moreover, the retailer side process shown in FIG. 6 controls the energy supply equipment 4, operates the energy supply equipment 4 existing in a remote place in the process of S14, or increases the output of the energy supply equipment 4, You may make it respond | correspond to the increase in facility group electric power consumption. Regardless of the configuration, the power retailer can bundle the consumers and appropriately operate the energy supply equipment provided in the power receiving facility of the consumer. As a result, even if an excess of power usage that cannot be absorbed only within the power receiving facilities of individual consumers occurs, it is possible for the entire consumer to be suppressed from exceeding the power usage. In addition, it is possible to provide a system that appropriately charges the power usage of each consumer in such a system. In addition, the energy supply equipment 4 provided in the power receiving facility of the consumer 3 as shown in FIG. 1 and the energy supply equipment 4 provided in the remote place as shown in FIG. 8 may be mixed.

<Modification 2>
The energy supply equipment 4 is not limited to a power generator. For example, a heat storage device may be used. Specifically, in S4 of FIG. 5, a heat pump type air conditioning facility using a heat storage device, a hot water supply facility, and the like are operated, and instead, power consumed for air conditioning or hot water supply in the power receiving facility is reduced. In the charge calculation process of FIG. 7, in S21, the charge for the power supply amount from the commercial power supply and the charge for the heat supply amount from the heat storage device are totaled to calculate the charge for the consumer. In particular, such a mode is also effective because the proportion of air conditioning occupied by a corporation is relatively large.

<Modification 3>
The present invention can also be applied to a retailer 2 that supplies energy other than electric power, such as a gas company. In this case, each consumer is connected to a supply base such as a gas pipe and the energy supply facility 4. The energy supply equipment 4 in this modification can also employ a power generation device, a power storage device, a heat storage device, or the like. For example, when a power generation device or a heat storage device is used as the energy supply facility 4, when it is determined in S2 of FIG. 5 that the amount of energy used such as gas exceeds a predetermined threshold (S2: YES), the energy supply facility 4 supplies The power to supply hot water and electromagnetic cookers. Further, when a heat storage device is used as the energy supply facility 4, when it is determined in S2 of FIG. 5 that the amount of energy used such as gas exceeds a predetermined threshold (S2: YES), for example, a heat pump type using a heat storage device Air conditioning equipment, hot water supply equipment, etc. are operated, and in S4, the amount of heat consumed for air conditioning or hot water supply is reduced.

<Modification 4>
In the system of the present invention, the retailer 2 and the customer 3 can be managed by different operators. That is, each of the latter devices / equipment is placed under the management of the facility diagnosis business operator, and the control unit 33 cooperates with the retail business operator 2. The control unit 33 utilizes a diagnostic technique such as thermal load prediction to transmit a signal for operating, for example, a valve / pump constituting the load 32 to operate at an appropriate timing, and to operate the energy supply equipment 4 at an operation timing. And precisely control the switching timing of output and commercial power. It is also possible to calculate a reduction amount of the overall energy fee by this, calculate the difference from the amount charged to the customer when not doing so by a separately provided fee calculation unit, and obtain a reward based on that. Further, the control unit 33 is owned by the retailer 2 and the facility diagnosis company, respectively, and covers the parts such as energy diagnosis to the latter and the other such as billing calculation to the former, and communicates both the control units 33 via communication lines. You can also.

<Modification 5>
The configuration illustrated in FIG. 3 is an example, and other configurations in which devices having these functions are connected to each other may be employed. For example, the storage unit 24 is provided in storage on the network (so-called cloud), and the customer 3 continuously stores the power consumption in the storage unit 24 on the cloud, and the power consumption monitoring unit 21 of the retailer 2. Alternatively, the power consumption amount stored in the storage unit 24 on the cloud may be monitored.

  In addition, the content of embodiment mentioned above and a modification can be combined as much as possible in the range which does not deviate from the technical idea of this invention.

1: Electricity supplier 2: Retailer 21: Used power monitoring unit 22: Remote control unit 23: Charge calculation unit 24: Storage unit 3: Consumer 31: Used power measuring means 32: Load 33: Control unit 34: Storage Part 4: Energy supply equipment 5: Power grid

Claims (8)

A charge calculation method for calculating a power usage charge for a plurality of power receiving facilities connected to a commercial power supply provided by an electric power company and an energy supply facility that can be controlled by a power retailer,
Obtaining power usage for a predetermined period from a measuring device provided in each of the power receiving facilities and measuring power usage at the power receiving facility;
Reduced amount of power supplied from the commercial power supply by energy supply from the energy supply facility that is operated or output is increased when the total amount of power usage in the plurality of power receiving facilities exceeds a predetermined threshold A charge calculation step of adding a charge based on the standard and a charge for the power actually supplied from the commercial power source, and calculating a charge amount for the consumer;
A charge calculation method executed by a computer. The charge calculation method according to claim 1, wherein the energy supply facility is provided in a power receiving facility of the consumer and supplies energy to the power receiving facility. In the charge calculation step, the charge per unit amount is lower than the charge for the power supplied from the commercial power supply for the charge corresponding to the amount of power supplied from the commercial power supply due to the energy supply from the energy supply facility. The charge calculation method according to claim 2, wherein discounting is performed. The energy supply facility is operated in the power receiving facility of the consumer when the amount of power used in the power receiving facility exceeds a threshold in the power receiving facility,
The charge calculation method according to claim 2, wherein the computer prompts an operation of the energy supply facility in the power receiving facility of the consumer by changing a threshold value in the power receiving facility. The charge calculation method according to any one of claims 2 to 4, wherein the energy supply facility is a power generation device that generates power using gas, fuel oil, or hydrogen and can be used as an emergency power source or a standby power source. A charge calculation method for calculating an energy usage charge for a facility of a plurality of consumers connected to a supply base of an energy supplier and an energy supply facility that can be controlled by an energy retailer,
Obtaining the energy usage amount for a predetermined period from a measuring device provided in each facility and measuring the energy usage amount in the facility;
Based on a decrease in energy received from the supply base by energy supply from the energy supply facility that is activated or increased in output when the sum of energy usage in a plurality of facilities exceeds a predetermined threshold A charge calculating step of adding the charge and the charge for the energy actually supplied from the supply base to calculate the amount charged to the consumer;
A charge calculation method executed by a computer. A charge calculation device that calculates a power usage charge for a plurality of power receiving facilities connected to a commercial power source provided by an electric power company and an energy supply facility that can be controlled by a power retailer,
A monitoring unit that is provided in each of the power receiving facilities and acquires a power usage amount in a predetermined period from a measuring device that measures the power usage amount in the power receiving facility;
Reduced amount of power supplied from the commercial power supply by energy supply from the energy supply facility that is operated or output is increased when the total amount of power usage in the plurality of power receiving facilities exceeds a predetermined threshold A charge calculation unit that calculates a charge for the consumer by adding a charge based on the standard and a charge for the power actually supplied from the commercial power supply;
A charge calculation device having A charge calculation program for calculating a power usage charge for a plurality of power receiving facilities connected to a commercial power source provided by an electric power company and an energy supply facility that can be controlled by a power retailer,
Obtaining power usage for a predetermined period from a measuring device provided in each of the power receiving facilities and measuring power usage at the power receiving facility;
Reduced amount of power supplied from the commercial power supply by energy supply from the energy supply facility that is operated or output is increased when the total amount of power usage in the plurality of power receiving facilities exceeds a predetermined threshold A charge calculation step of adding a charge based on the standard and a charge for the power actually supplied from the commercial power source, and calculating a charge amount for the consumer;
Charge calculation program that causes a computer to execute

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