JP6711077B2 - Electricity charge calculation method, electric charge calculation program, and electric charge calculation device - Google Patents

Description

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

There is known an electricity price trial calculation system that presents an optimal price plan to an electric power consumer (see, for example, Patent Document 1). Further, a calculation formula for calculating the electricity bill is also known (for example, refer to Patent Document 2).

JP, 2012-063814, A JP, 2002-095165, A

In recent years, with the liberalization of electric power, the electric power companies that present a tariff plan include not only existing general electric power companies but also Power Producer and Supplier (PPS: Specified Scale Electric Power Companies). For this reason, a wide variety of charge plans are presented by the electric power company, and the demand options for consumers increase, but it becomes difficult to select the charge plans that meet the demands of the consumers themselves.

Therefore, in one aspect, it is an object to provide a power charge calculation method, a power charge calculation program, and a power charge calculation device that can display the lowest price of power charges when a combination of power charge plans is combined.

An electric power charge calculation method disclosed in the present specification divides electric power demand information representing electric power demand into first electric power demand information and second electric power demand information on the basis of the minimum electric power consumption, and each of the electric power price plans is divided. The first power rate based on the first rate plan information included in the plurality of rate plan information and the first power demand information, the second rate plan information included in the plurality of rate plan information, and The total electric power charge obtained by summing the second electric power charges based on the second electric power demand information is calculated in the first case in which the first price plan information is contracted with the specific contracted electric power, and from the specific contracted electric power. A plurality of electric powers are obtained by sequentially calculating in each of the second case of contracting with the electric power of which the fixed amount is increased and the third case of contracting with the electric power of which the predetermined amount is decreased from the specific contracted electric power. It is a power charge calculation method in which a computer executes a process of calculating a charge and displaying the lowest power charge from the calculated plurality of power charges on a display unit.
The electric power charge calculation method disclosed in the present specification represents a combination of a plurality of price plan information including coefficient information indicating emission factor for each electric power supplier and electric power demand information indicating electric power demand, while representing each electric power charge plan. Based on the power demand information and the coefficient information, the greenhouse gas emission amount is calculated, and the lowest power price is displayed from the calculated power prices. It is a method for calculating the electric power charge displayed on the section and executed by a computer.
A power charge calculation method disclosed in the present specification represents a power charge plan, divides one day into predetermined minutes, and divides one year into one day and a matrix table, respectively. Based on the combination of a plurality of rate plan information including the unit price stored in the and the power demand information representing the power demand, a plurality of power rates are calculated, and the lowest price is calculated from the calculated plurality of power rates. It is a method for calculating the electric power charge, in which the computer executes the process of displaying the electric power charge on the display unit.

The electric power charge calculation program disclosed in the present specification divides the electric power demand information indicating the electric power demand into first electric power demand information and second electric power demand information based on the minimum electric power consumption, and each electric power charge plan is divided. The first power rate based on the first rate plan information included in the plurality of rate plan information and the first power demand information, the second rate plan information included in the plurality of rate plan information, and The total electric power charge obtained by summing the second electric power charges based on the second electric power demand information is calculated in the first case in which the first price plan information is contracted with the specific contracted electric power, and from the specific contracted electric power. A plurality of electric powers are obtained by sequentially calculating in each of the second case of contracting with the electric power of which the fixed amount is increased and the third case of contracting with the electric power of which the predetermined amount is decreased from the specific contracted electric power. It is a power charge calculation program for causing a computer to execute a process of calculating a charge and displaying the lowest power charge from the calculated plurality of power charges on the display unit.
The electric power rate calculation program disclosed in the present specification represents a combination of a plurality of rate plan information including electric power rate plans, coefficient information indicating emission factors by electric power companies, and electric power demand information indicating electric power demand. Based on the power demand information and the coefficient information, the greenhouse gas emission amount is calculated, and the lowest power price is displayed from the calculated power prices. It is a power charge calculation program displayed on the section for causing a computer to execute a process.
The electricity rate calculation program disclosed in the present specification represents a rate plan for electricity, divides one day into predetermined minutes, and divides one year into one day and the matrix table. Based on the combination of a plurality of rate plan information including the unit price stored in the and the power demand information representing the power demand, a plurality of power rates are calculated, and the lowest price is calculated from the calculated plurality of power rates. It is a power charge calculation program for displaying a power charge on a display unit and causing a computer to execute a process.

An electric power charge calculation device disclosed in the present specification divides electric power demand information representing electric power demand into first electric power demand information and second electric power demand information on the basis of minimum power consumption, and sets electric power rate plans respectively. The first power rate based on the first rate plan information included in the plurality of rate plan information and the first power demand information, the second rate plan information included in the plurality of rate plan information, and The total electric power charge obtained by summing the second electric power charges based on the second electric power demand information is calculated in the first case in which the first price plan information is contracted with the specific contracted electric power, and from the specific contracted electric power. A plurality of electric powers are obtained by sequentially calculating in each of the second case of contracting with the electric power of which the fixed amount is increased and the third case of contracting with the electric power of which the predetermined amount is decreased from the specific contracted electric power. It is an electric power bill calculation device which has a calculation part which computes a charge, and a display control part which displays the cheapest electric power bill from the plurality of electric power bills calculated by the calculation part on a display part.
The electric power rate calculation device disclosed in the present specification represents a combination of a plurality of rate plan information including coefficient information indicating emission factor for each electric power supplier and electric power demand information indicating electric power demand while representing each electric power rate plan. Based on the power demand information and the coefficient information, a plurality of calculation units for calculating greenhouse gas emissions, and among the plurality of power charges calculated by the calculation unit And a display control unit that displays the lowest electricity price on the display unit.
The electric power rate calculation device disclosed in the present specification represents a rate plan of electric power, divides one day into predetermined minutes, and divides one year into one day, and each of the matrix table. A calculation unit that calculates a plurality of power charges based on a combination of a plurality of price plan information including the unit price stored in the power demand information and power demand information that represents a power demand; and a plurality of the power calculated by the calculation unit. It is a power rate calculation device having a display control section for displaying the lowest power rate from the rates on the display section.

According to the power charge calculation method, the power charge calculation program, and the power charge calculation device disclosed in this specification, it is possible to display the lowest price of the power charge when the power charge plans are combined.

FIG. 1 is an example of a power charge calculation system. FIG. 2 shows an example of the hardware configuration of the server device. FIG. 3 is an example of a block diagram of the server device according to the first embodiment. FIG. 4 is an example of the power demand information storage unit. FIG. 5 shows an example of the file format of the charge plan information. FIG. 6 is an example of a season/time zone charge unit price matrix table. FIG. 7 is a flowchart showing an example of processing executed by the server device. FIG. 8 is an example of a screen displayed by the display unit. FIG. 9 is a flowchart showing an example of the lowest price calculation process. FIG. 10 is a diagram for explaining an example of division of power demand information. FIG. 11 is an example of an algorithm for calculating the lowest electricity price. FIG. 12 is a diagram for explaining an example of the appearance pattern. FIG. 13 is a flowchart showing another example of the lowest price calculation processing. FIG. 14 is an example showing the relationship between the appearance pattern and the electricity charge. FIG. 15 is another example showing the relationship between the appearance pattern and the electricity charge. FIG. 16 is an example of a block diagram of a server device according to the second embodiment.

Hereinafter, a mode for carrying out the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is an example of the power charge calculation system S. The power charge calculation system S includes a terminal device 100 and a server device 200 as a power charge calculation device. Although a portable (notebook type) personal computer (PC) including an input unit 110, a display unit 120, and a control unit (not shown) is shown as an example of the terminal device 100 in FIG. However, it is not particularly limited to a portable PC. For example, the terminal device 100 may be a stationary (desktop type) PC, a smartphone, a tablet terminal, or the like. The terminal device 100 is installed, for example, at a base of a consumer of a corporation whose location is different from that of a data center DC such as a business office, a factory, and a research laboratory. On the other hand, the server device 200 is provided, for example, in the data center DC on the cloud CL.

The terminal device 100 and the server device 200 are connected via the communication network NW. The communication network NW is, for example, the Internet. Therefore, the terminal device 100 can communicate with the server device 200. That is, the terminal device 100 can receive various types of information transmitted from the server device 200 and can transmit various types of information to the server device 200.

For example, when the terminal device 100 transmits the charge plan information indicating the charge plan of the power charge to the server device 200, the server device 200 receives the charge plan information. More specifically, the server device 200 receives the charge plan information transmitted by the terminal device 100 via the communication network NW. When the server device 200 receives the charge plan information, the server device 200 transmits the lowest price of the power charge to the terminal device 100. Specifically, when the server device 200 receives the charge plan information, the server device 200 calculates a plurality of power charges based on the power demand information and the charge plan information described later. The server device 200 transmits the lowest power rate from the calculated power rates. Thereby, the terminal device 100 receives and displays the lowest electricity rate. More specifically, the control unit of the terminal device 100 receives the lowest electricity price, and the display unit 120 displays the lowest electricity price. The details of the operation of the server device 200 will be described later.

Next, the hardware configuration of the server device 200 will be described with reference to FIG. Note that the above-described terminal device 100 has basically the same hardware configuration as the server device 200, and a description thereof will be omitted.

FIG. 2 is an example of a hardware configuration of the server device 200. As shown in FIG. 2, the server device 200 includes at least a Central Processing Unit (CPU) 200A, a Random Access Memory (RAM) 200B, a Read Only Memory (ROM) 200C, and a network I/F (interface) 200D. The server device 200 may include at least one of a Hard Disk Drive (HDD) 200E, an input I/F 200F, an output I/F 200G, an input/output I/F 200H, and a drive device 200I as necessary. The CPU 200A to the drive device 200I are connected to each other by an internal bus 200J. A computer is realized by at least the CPU 200A and the RAM 200B cooperating with each other.

An input device 710 is connected to the input I/F 200F. Examples of the input device 710 include a keyboard and a mouse.
A display device 720 is connected to the output I/F 200G. The display device 720 is, for example, a liquid crystal display.
A semiconductor memory 730 is connected to the input/output I/F 200H. The semiconductor memory 730 may be, for example, a Universal Serial Bus (USB) memory or a flash memory. The input/output I/F 200H reads programs and data stored in the semiconductor memory 730.
The input I/F 200F and the input/output I/F 200H have, for example, USB ports. The output I/F 200G includes, for example, a display port.

A portable recording medium 740 is inserted into the drive device 200I. Examples of the portable recording medium 740 include removable disks such as Compact Disc (CD)-ROM and Digital Versatile Disc (DVD). The drive device 200I reads programs and data recorded on the portable recording medium 740.
The network I/F 200D includes, for example, a LAN port. Network I/F 200D is connected to communication network NW.

The programs stored in the ROM 200C and the HDD 200E are stored in the RAM 200B described above by the CPU 200A. The program recorded on the portable recording medium 740 is stored in the RAM 200B by the CPU 200A. When the CPU 200A executes the stored program, various functions described below are realized and various processes described below are executed. It should be noted that the program may be adapted to the flowchart described later.

Next, the function of the server device 200 will be described with reference to FIGS. 3 to 6.

FIG. 3 is an example of a block diagram of the server device 200 according to the first embodiment. FIG. 4 is an example of the power demand information storage unit 201. FIG. 5 shows an example of the file format of the charge plan information. FIG. 6 is an example of the seasonal/time zone charge unit price matrix table T4. As shown in FIG. 3, the server device 200 includes a power demand information storage unit 201, a contract standard information storage unit 202, a reception unit 203, a calculation unit 204, and a display control unit 205.

The power demand information storage unit 201 stores power demand information. The power demand information is information indicating past power demand, specifically, information indicating the actual results of power demand. The electric power demand information storage unit 201 stores the electric power demand information of each of the above-mentioned bases in advance (for example, before the electric power charge is calculated). The power demand information storage unit 201 may store the stored power demand information for each base. The power demand information storage unit 201 may store the power demand information transmitted from each base, or the power demand information storage unit 201 may store the power demand information acquired from each base.

Here, the power demand information storage unit 201 will be described in more detail with reference to FIG. As shown in FIG. 4, the power demand information storage unit 201 includes a contract power table T1, a contract power excess table T2, and a plurality of used power tables T3 as power demand information. Therefore, the contract power table T1, the contract power excess table T2, and the used power table T3 all represent the past record of power demand.

The contract power table T1 includes contract power and a power factor as components. The contract power represents the maximum power that can be used under the contract. The power factor represents the ratio of the power that is effectively used to the power provided by the power company. Therefore, the contracted power table T1 shown in FIG. 4 indicates that the contracted power of 3300 kW was contracted between the consumer and the power company in the previous year of the contract target year, and the power factor was 98%.

The contract power excess table T2 includes the maximum power demand as a component. The maximum power demand represents the maximum value of the power demand when the contract power is exceeded. As described above, when the contracted power of 3300 kW is contracted, the maximum power demand of 3500 kW is recorded as shown in FIG. Therefore, the contract power excess table T2 shown in FIG. 4 indicates that the excess power has exceeded 200 kW.

Each of the plurality of power consumption tables T3 includes the date of use, the time of use, and the amount of power as constituent elements. The date of use and the period of use represent the date and time of use of the electric power, respectively. The amount of electric power represents the amount of electric power used. In FIG. 4, as an example, a power amount of 2200 kW from 10:30 to 11:00 on June 1, 2015 is shown. The used power table T3 manages the amount of power for each usage date and each usage time period. Therefore, even in the same date of use, a plurality of different usage time zones and respective amounts of power are managed. Similarly, a plurality of different dates of use and respective amounts of power are managed even in the same use time zone.

Returning to FIG. 3, the contract standard information storage unit 202 stores the contract standard information. The contract standard information is information indicating a contract standard or a contract specification (hereinafter, simply referred to as a contract standard) when a consumer concludes a contract with an electric power company. The contract standard includes, for example, an upper limit value of contract power. Therefore, if the contract standard information and the rate plan information are collated and the rate plan information does not satisfy the contract standard information, the rate plan information is excluded when calculating the power rate. The contract standard information is transmitted from the terminal device 100 before the power charge is calculated, and the reception unit 203 stores the contract standard information storage unit 202.

The reception unit 203 receives various types of information transmitted from the terminal device 100. As illustrated in FIG. 3, when the contract reference information, the charge plan information, and the base information are transmitted from the terminal device 100, the reception unit 203 receives the contract reference information, the charge plan information, and the base information. Here, the base information is information indicating the type of base. Therefore, the base information includes information indicating types such as factories, research laboratories, and business establishments. The discount rate of the electricity charge is determined by the base information. For example, the discount rate for factories is set higher than that for business establishments. Upon receiving the base information, the reception unit 203 stores the received base information in the contract reference information storage unit 202. When the charge plan information is selected on the screen displayed on the display unit 120, the terminal device 100 combines the first charge plan information and the second charge plan information included in the selected charge plan information. It is transmitted to the server device 200.

The calculation unit 204 calculates a plurality of power rates based on the combination of the first rate plan information and the second rate plan information and the power demand information. More specifically, the calculation unit 204 uses the power demand information based on the minimum power consumption as base power demand information that represents a reference power demand amount and the power demand that follows or fluctuates according to the load (specifically, the power consumption amount). And the load-following power demand information indicating minutes. When the calculation unit 204 divides the power demand information, the calculation unit 204 divides the power demand information into a first power charge based on the first charge plan information and the base power demand information, and a second power plan based on the second charge plan information and the load following power demand information. The total electric power charges, which are the total of the electric power charges, are sequentially calculated for each of the following three cases. The first case is a case where the first rate plan information is contracted with a specific contract power. In the second case, a contract is made with electric power obtained by increasing a predetermined amount from the specific contracted electric power. In the third case, a contract is made with electric power obtained by reducing a predetermined amount from the specific contract electric power. The calculation unit 204 sequentially calculates the power charges in these three cases, and outputs the calculated power charges to the display control unit 205.

The display control unit 205 causes the display unit 120 to display the lowest electricity price among the plurality of electricity rates output from the calculation unit 204. More specifically, the display control unit 205 transmits the lowest power rate to the terminal device 100 from the plurality of power rates. Therefore, the control unit of the terminal device 100 receives the lowest electricity price, and the display unit 120 displays the lowest electricity price.

Next, details of the above-mentioned charge plan information will be described with reference to FIGS. 5 and 6.

FIG. 5 shows an example of the file format of the charge plan information. FIG. 6 is an example of the seasonal/time zone charge unit price matrix table T4. As shown in FIG. 5, the charge plan information includes four layers. The first layer is a layer regarding contract judgment. The first layer stores information indicating whether the charge plan information is applied or not applied based on the contract standard information. The second layer is a layer related to the basic unit price, the pay-per-unit price, and the like. In the second layer, for example, the basic unit price of contract power: 1536.39 (¥/kW) is stored. The basic electricity rate is calculated by multiplying the basic unit price by the contract electricity and the power factor. The power factor coefficient can be calculated by the mathematical expression “power factor coefficient=(185−power factor)÷100”. The emission coefficient for each electric power supplier may be stored in the second layer. Examples of the emission factor for each electric utility include an actual emission factor (t-CO2/kWh) and an adjusted emission factor (t-CO2/kWh).

The third layer is a layer related to a charge calculation formula, a discount calculation formula, and the like. In the third layer, the final calculation formula of the electricity charge is stored. In FIG. 5, as an example, the formula of electric power charge=basic electric power charge+electricity charge is stored in the third layer. Also included are those that have been made. The calculation formula of the basic electric power charge can be expressed by basic electric power charge=basic unit price×contract electric power×power factor coefficient+basic unit price×excess contract power×power factor coefficient×1.5. The calculation formula of the electric power charge can be expressed by the electric power charge=the unit price per season/time zone×the total amount of electric power used per unit time. Both the fuel adjustment amount and the renewable energy generation promotion levy are the unit price of each unit multiplied by the amount of electricity used. The calculation formula of the greenhouse gas emission amount may be stored in the third layer. The calculation formula of the greenhouse gas emission amount can be expressed by, for example, greenhouse gas emission amount=activity amount (for example, power consumption amount)×emission factor for each electric power company. The fourth layer is a layer related to the unit price per season and time zone. In the fourth layer, a seasonal/time zone charge unit price matrix table T4 is stored. Specifically, the fourth layer stores a season/time zone-based charge unit price matrix table T4 for three years.

Specifically, as shown in FIG. 6, the row of the season/time zone-based charge unit price matrix table T4 represents 24 hours a day, and the row of the season/time zone-based charge unit price matrix table T4 is 365 days per year or It represents 366 days. Here, the line is divided into units of a predetermined number. For example, if a line is divided by 5 minutes, the line is divided into 288 lines. On the other hand, the columns are divided on a daily basis. Each of the constituent elements of the seasonal/time zone charge unit price matrix table T4 stores one of the first to sixth information associated with the charge unit price of the power consumption. For example, the third information associated with the unit price of 11.81 yen/kWh is stored in the components from 0:00 to 10:00 from January 1st to May 1st.

As described above, by storing any of the first information to the sixth information in each component of the seasonal/time zone charge unit price matrix table T4, the seasonal/time zone charge unit price matrix table T4 is divided into six groups. It is classified into G1 to G6. Groups G1 to G3 represent normal periods, and groups G4 to G6 represent lightening periods. The reduction period is a period from June 1 to September 30, and is a period in which the unit price is increased from the normal period in the same time zone. The groups G1 and G4 represent time zones in which the amount of power used is large (heavy load). Groups G2 and G5 represent daytime hours. Groups G3 and G6 represent night time zones. When the electric energy charge is calculated, any one of the first information to the sixth information is specified based on the date of use and the time of use, and the charge unit price associated with any of the specified information is used. The order of the first layer to the fourth layer may be changed as appropriate, for example, the order of the third layer and the fourth layer may be exchanged.

Next, the operation of the server device 200 will be described with reference to FIGS. 7 and 8.

FIG. 7 is a flowchart showing an example of processing executed by the server device 200. FIG. 8 is an example of a screen displayed by the display unit 120. As illustrated in FIG. 7, when the contract reference information is transmitted from the terminal device 100 (more specifically, the control unit), the reception unit 203 receives the contract reference information (step S101). The acceptance unit 203 stores the accepted contract standard information in the contract standard information storage unit 202.

Next, when the base information is transmitted from the terminal device 100, the reception unit 203 receives the base information (step S102). The reception unit 203 stores the received base information in the contract reference information storage unit 202. Next, when the selected charge plan information is transmitted from the terminal device 100, the reception unit 203 receives the charge plan information (step S103). The charge plan information is displayed on the display unit 120 and is selected based on the instruction from the input unit 110. When the process of step S103 is completed, the reception unit 203 then collates the contract standard information with the charge plan information (step S104). More specifically, the reception unit 203 extracts the contract standard information from the contract standard information storage unit 202, and collates the extracted contract standard information with the charge plan information.

Here, the reception unit 203 determines whether or not the charge plan information satisfies the contract standard information (step S105). When the charge plan information does not satisfy the contract standard information (step S105: NO), the reception unit 203 excludes the charge plan information (step S106). The reception unit 203 outputs the remaining charge plan information excluding the charge plan information to the calculation unit 204. On the other hand, when the charge plan information satisfies the contract standard information (step S105: YES), the process of step S106 is skipped. Therefore, the reception unit 203 outputs all the selected price plan information to the calculation unit 204.

When the charge plan information is output from the reception unit 203, the calculation unit 204 executes the lowest price calculation process (step S107). The lowest price calculation process is a process of calculating the lowest price of the electricity charge. The calculation unit 204 calculates the lowest price of electric power by executing the lowest price calculation process. The details of the lowest price calculation processing will be described later. When the process of step S107 is completed, the calculation unit 204 then discounts the lowest electricity rate based on the site information (step S108). When the process of step S108 is completed, the display control unit 205 then displays the discounted lowest electricity price on the display unit 120 (step S109). More specifically, the display control unit 205 acquires the discounted lowest electricity price from the calculation unit 204 and transmits it to the terminal device 100. The control unit of the terminal device 100 receives the discounted lowest electric power price, and the display unit 120 displays the discounted lowest electric power price.

As a result, as shown in FIG. 8, the display unit 120 displays the discounted lowest power rate in comparison with the power rate paid by the current rate plan together with the difference. At the same time, the display unit 120 displays the combination of the rate plans that realizes the lowest electricity rate together with the current rate plan. In FIG. 8, the combination of the charge plan “special high voltage A” and the charge plan “load factor B” is displayed. As a result, the person in charge of the customer, for example, the electric chief engineer who is a decision maker at each base, can determine the contract power and select the charge plan. The display unit 120 may also display the greenhouse gas emission amount.

Next, the lowest price calculation process described above will be described with reference to FIGS. 9 to 13.

FIG. 9 is a flowchart showing an example of the lowest price calculation process. FIG. 10 is a diagram for explaining an example of division of the power demand information 10. FIG. 11 is an example of an algorithm for calculating the lowest electricity price. FIG. 12 is a diagram for explaining an example of the appearance pattern. FIG. 13 is a flowchart showing another example of the lowest price calculation processing.

First, as shown in FIG. 9, the calculation unit 204 extracts the power demand information 10 (step S201). More specifically, when the calculation unit 204 receives the charge plan information output from the reception unit 203, the calculation unit 204 accesses the power demand information storage unit 201 and extracts the power demand information 10. When the process of step S201 is completed, the calculation unit 204 then detects the minimum power consumption (step S202). Specifically, as shown in the upper part of FIG. 10, the calculation unit 204 detects the minimum value of the used power that fluctuates from the power demand information 10 as the minimum used power. When the process of step S202 is completed, the calculation unit 204 then divides the power demand information 10 (step S203). More specifically, as shown in the lower part of FIG. 10, the calculation unit 204 divides the power demand information 10 into base power demand information 11 and load following power demand information 12 based on the minimum power consumption.

When the process of step S203 is completed, the calculation unit 204 then sets the minimum power consumption to the median value C (step S204). The median value C represents the central contract power value of the first rate plan information when calculating the power rate. More specifically, as shown in FIG. 10 and FIG. 11A, the boundary between the base power demand information 11 and the load following power demand information 12 represents the minimum power consumption, and therefore the calculation unit 204 has a median value C at the boundary. To set.

When the process of step S204 is completed, the calculation unit 204 then sets a value obtained by increasing the median value C by a predetermined amount as the upper value U (step S205). The upper value U represents the upper contract power value of the first rate plan information when calculating the power rate. More specifically, as shown in FIG. 11A, the calculation unit 204 sets the upper value U to a value obtained by increasing α/2 from the median value C.

When the process of step S205 is completed, the calculation unit 204 then sets a value obtained by reducing the median value C by a predetermined amount as the lower value D (step S206). The lower value U represents the lower contracted power value of the first rate plan information when calculating the power rate. More specifically, as shown in FIG. 11A, the calculation unit 204 sets the lower value D to a value obtained by subtracting the same α/2 from the median value C. Therefore, the difference between the upper side value U and the lower side value D is α (kW), and the center value C is located at the center thereof.

When the process of step S206 is completed, the calculation unit 204 then calculates the total power charge CG when the first charge plan information is the median value C (step S207). That is, if the first rate plan information is contracted with the contract power of the median value C, the calculation unit 204 calculates the first power rate based on the contract power and the base power demand information 11. The first electric power charge corresponds to the basic electric power charge when contracted with the contracted power of the median value C. On the other hand, regarding the load following power demand information 12 which is the difference between the power demand information 10 and the base power demand information 11, the calculating unit 204 determines the second based on the second charge plan information and the load following power demand information 12. Calculate the electricity bill. The second power charge corresponds to the power charge. When the calculation unit 204 calculates the first power charge and the second power charge, the calculation unit 204 sums the first power charge and the second power charge to calculate the total power charge CG.

When the process of step S207 is completed, the calculation unit 204 then calculates the total power rate UG when the first rate plan information is the upper value U (step S208). That is, if the first rate plan information is contracted with the contracted power of the upper value U, the calculation unit 204 calculates the first power rate based on the contracted power and the base power demand information 11. The first electric power charge corresponds to the basic electric power charge when contracted with the contracted electric power with the upper value U. On the other hand, since the base power demand information 11 increases up to the upper limit value U, the load following power demand information 12 decreases accordingly. Specifically, since the base power demand information 11 increases from the median value C by α/2 (kW), the load following power demand information 12 decreases by α/2 (kW). Therefore, the calculation unit 204 calculates the second power rate based on the second rate plan information and the reduced load following power demand information 12. The second electricity rate also corresponds to the electricity rate. When the calculation unit 204 calculates the first power charge and the second power charge, the calculation unit 204 sums the first power charge and the second power charge to calculate the total power charge UG.

When the process of step S208 is completed, the calculation unit 204 then calculates the total power rate DG when the lower price D is the first rate plan information (step S209). That is, if the first rate plan information is contracted with the contracted power of the lower value D, the calculation unit 204 calculates the first power rate based on the contracted power and the base power demand information 11. The first electric power charge corresponds to the basic electric power charge when contracted with the contracted electric power with the lower value D. On the other hand, since the base power demand information 11 decreases to the lower value D, the load following power demand information 12 increases accordingly. Specifically, since the base power demand information 11 decreases from the median value C by α/2 (kW), the load following power demand information 12 increases by α/2 (kW). Therefore, the calculation unit 204 calculates the second power rate based on the second rate plan information and the increased load following power demand information 12. The second electricity rate also corresponds to the electricity rate. When the calculation unit 204 calculates the first power charge and the second power charge, the calculation unit 204 sums the first power charge and the second power charge to calculate the total power charge DG.

When the process of step S209 is completed, the calculation unit 204 then determines whether the total power charge CG is equal to or more than the total power charge UG (step S210). When the total power rate CG is equal to or higher than the total power rate UG (step S210: YES), the calculation unit 204 further determines whether the total power rate CG is less than the total power rate DG (step S211). Through the comparison process of steps S210 and S211, the magnitude relationship among the total power rate CG, the total power rate UG, and the total power rate DG is determined.

Here, when the total power rate CG is less than the total power rate DG (step S211: YES), the calculation unit 204 determines that the first appearance pattern (step S212). That is, when the total power rate DG>total power rate CG≧total power rate UG is satisfied, the calculation unit 204 determines this magnitude relationship as the first appearance pattern.

Explaining in detail with reference to FIG. 12, when the total power rate CG when the first rate plan information is contracted with the contracted power of the median value C (kW) is the reference value B, the first rate plan When the information is contracted with the upper limit value U (kW) of contracted electric power, the total electric power charge UG becomes lower than the reference value B. Similarly, when the total power rate CG when the first rate plan information is contracted with the contracted power of the median value C (kW) is the reference value B, the first rate plan information is set to the lower value D (kW). The total electric power charge DG when contracted with the contracted electric power is higher than the reference value B.

Therefore, as shown in FIG. 12, the first appearance pattern becomes the low price L, the reference price B, and the high price H in the order of the upper value U, the median value C, and the lower value D. That is, as shown in FIG. 11A, in the first power rate judgment, if the first price plan information is contracted with the contracted power of the upper value U, the contracted power of the median C or the lower value D is contracted. You can keep the electricity price cheaper than you can.

On the other hand, in the process of step S211, when the total power rate CG is equal to or higher than the total power rate DG (step S211: NO), the calculation unit 204 determines that the second appearance pattern (step S213). That is, when the total power rate DG ≤ the total power rate CG ≥ the total power rate UG is satisfied, the calculation unit 204 determines this magnitude relationship as the second appearance pattern. As a result, as shown in FIG. 12, the second appearance pattern becomes the low price L, the reference price B, and the low price L in the order of the upper price U, the median C, and the lower price D.

Further, in the process of step S210, when the total power rate CG is less than the total power rate UG (step S210: NO), the process proceeds to FIG. 13, and the calculation unit 204 further determines whether the total power rate CG is less than the total power rate DG. It is determined whether or not (step S214). When the total power rate CG is equal to or higher than the total power rate DG (step S214: NO), the calculation unit 204 determines that the third appearance pattern (step S215). That is, when the total power rate DG≦total power rate CG<total power rate UG is satisfied, the calculation unit 204 determines this magnitude relationship as the third appearance pattern. In this case, as shown in FIG. 12, the third appearance pattern has an upper value U, a median value C, and a lower value D in order of a high value H, a reference value B, and a low value L.

On the other hand, in the process of step S214, when the total power rate CG is less than the total power rate DG (step S214: YES), the calculation unit 204 determines that it is the fourth appearance pattern (step S216). That is, when the total power rate DG>total power rate CG<total power rate UG is satisfied, the calculation unit 204 determines this magnitude relationship as the fourth appearance pattern. In this case, as shown in FIG. 12, the fourth appearance pattern becomes the high value H, the reference value B, and the high value H in the order of the upper value U, the median value C, and the lower value D.

Note that the amount of money may be the same depending on the calculated total power charges CG, UG, and DG. Therefore, as shown in FIG. 12, by defining the same value S representing that the amount of money is the same as the reference value B, the appearance pattern is added to the above-described first appearance pattern to fourth appearance pattern, and the fifth appearance pattern is added. The appearance pattern to the ninth appearance pattern may appear.

When the processes of steps S212 and S213 shown in FIG. 9 and steps S215 and S216 shown in FIG. 13 are completed, the calculation unit 204 then calculates the upper value U, the median value C, and the lower value D (step S217). More specifically, the calculation unit 204 calculates or sets the upper side value U, the median value C, and the lower side value D according to the following calculation processing according to the first appearance pattern to the fourth appearance pattern described above.

(1) Calculation processing according to the first appearance pattern The upper value of the median value C (initially the maximum used power value and the upper value U is divided into two) is newly set to the median value C, and the next power value is set. Execute charge determination.
(2) Calculation processing according to the second appearance pattern The calculated total power rates UG and DG are compared, and the cheaper one of the calculated values (upper value U or lower value D) and the median value C are set to 2 The divided value is newly set as the median value C, and the next power charge determination is executed.
(3) Calculation processing according to the third appearance pattern A value below the median value C (initially, the minimum power consumption value (0 kW) and the below value D is divided into two) is newly set to the median value C Then, the next power rate judgment is executed.
(4) Calculation Processing According to Fourth Appearance Pattern A value obtained by adding ((upper value U-lower price L)/any number less than 2) to the median value C is defined as the upper value U, and the median C is ((( A value obtained by subtracting (upper value U-lower price L)/an arbitrary number less than 2) is set as a lower value D, and the next electric power rate determination is performed while the median value C is maintained.

Here, in the first embodiment, as shown in FIGS. 11A and 11B, the low price L, the reference value B, and the low price L, the median value C, and the low price D in the order of the first electricity charge determination, It becomes a high value H, and is determined to be the first appearance pattern. Therefore, in the second power charge determination, a value obtained by dividing the maximum used power value and the upper value U into two is newly set as the median value C. Then, a value obtained by adding β/2 to the median value C is set as the upper value U, and a value obtained by subtracting β/2 from the median value C is set as the lower value D.

When the process of step S217 is completed, the calculation unit 204 then determines whether the upper value U-median C is 1 (kW) or less (step S218). When the upper value U-median C is not equal to or less than 1 (kW) (step S218: NO), the processes from steps S207 to S217 are repeated. As a result, the second power charge determination is executed. That is, until the upper side value U-median value C becomes 1 (kW) or less, as shown in FIG. 11A, the calculation process according to the first appearance pattern is performed in the third power rate determination and the fourth time. It is also executed when determining the electricity charge.

On the other hand, in the process of step S218, when the upper value U-median value C is 1 (kW) or less (step S218: YES), the calculation unit 204 calculates the contract power (step S219). At this time, the calculation unit 204 may also calculate the greenhouse gas emission amount. In the first embodiment, as shown in FIG. 11A, it is determined that the upper limit value U-median value C is 1 (kW) or less when the fourth power rate determination is completed. According to the graph showing the relationship between the power rate shown in FIG. 11A and the contracted power of the first rate plan information, when the contracted power is the maximum used power among the plurality of calculated power rates, It shows that the electricity price will be the lowest price. Therefore, the calculation unit 204 determines the maximum electric power used for calculating the lowest electric power price as the contracted electric power of the first price plan information. When the calculation unit 204 determines the contract power, the calculation unit 204 calculates the greenhouse gas emission amount by using the determined contract power and the emission coefficient for each electric power company.

When the fifth to ninth appearance patterns described above appear, the upper value U, the median value C, and the lower value D are calculated or set according to the following calculation process.

(5) Calculation Processing According to Fifth Appearance Pattern The same processing as the above-described first appearance pattern is executed.
(6) Calculation Processing According to Sixth Appearance Pattern The same processing as the above-described third appearance pattern is executed.
(7) Calculation Processing According to Seventh Appearance Pattern The same processing as the above-described fourth appearance pattern is executed.
(8) Calculation Processing According to Eighth Appearance Pattern The same processing as the fourth appearance pattern described above is executed.
(9) Calculation Processing According to Ninth Appearance Pattern The same processing as the above-described fourth appearance pattern is executed.

FIG. 14 is an example showing the relationship between the appearance pattern and the electricity charge. FIG. 15 is another example showing the relationship between the appearance pattern and the electricity charge. First, as shown in FIG. 14A, the first appearance pattern appears in the first, second, and fourth power charge determinations, but the fourth appearance appears in the third power charge determination. Patterns may appear. In this case, as shown in FIG. 14( b ), the lowest price of the power charge is calculated with the power that is not the maximum power usage. Similarly, as shown in FIG. 15A, although the first appearance pattern appears in the second, third, and fourth power charge determinations, the first appearance pattern appears in the third power charge determination. Occurrence patterns may appear. Also in this case, as shown in FIG. 15(b), the lowest price of the power charge is calculated with the power that is not the maximum power usage. Therefore, the calculation unit 204 determines the contracted power of the first rate plan information for calculating the lowest price of the power rate, and then calculates the difference between the used power of the power demand information 10 and the determined contracted power of the second rate plan information. Determined as the contracted power of. Then, the calculation unit 204 calculates the minimum greenhouse gas emission amount by using each contracted power of the first rate plan information and the second rate plan information and the emission coefficient for each electric power company. For example, the calculation unit 204 multiplies the electric power demand information on the contracted electric power of the first rate plan information by the emission factor given to the electric power supplier who provides the first rate plan information to obtain the first greenhouse gas emission amount. To calculate. Similarly, the calculation unit 204 multiplies the electric power demand information on the contracted electric power of the second rate plan information by the emission factor given to the electric power supplier who provides the second rate plan information to obtain the second greenhouse gas. Calculate emissions. The calculation unit 204 sums the first greenhouse gas emission amount and the second greenhouse gas emission amount to calculate the minimum greenhouse gas emission amount.

As described above, according to the first embodiment, the server device 200 calculates a plurality of power charges based on a combination of a plurality of price plan information and power demand information, and a plurality of calculation units 204 calculated by the calculation unit 204. The display control unit 205 is provided for displaying the lowest price of electric power from the electric power charges on the display unit 120. As a result, it is possible to display the lowest price of electric power charges in the case of combining electric power charge plans.

(Second embodiment)
Next, with reference to FIG. 16, a second embodiment of the present case will be described.
FIG. 16 is an example of a block diagram of the server device 200 according to the second embodiment. The same components as those of the server device 200 shown in FIG. 3 are designated by the same reference numerals, and the description thereof will be omitted.

In the second embodiment, Demand Response (DR) is considered. The DR is a mechanism that sets a power charge for each time zone and prompts consumers who have refrained from using it during peak hours to restrain usage, thereby reducing power consumption during peak hours and ensuring stable power supply.

Here, as shown in FIG. 16, the accepting unit 203 may accept a combination of Demand Response (DR: Demand Response) type charge plan information and in-house generated type charge plan information. Even when the combination is accepted, the lowest price of the power charge can be calculated as in the first embodiment.

Here, examples of in-house power generation include gas engine power generation by a gas engine power generator, solar power power generation by a solar power generator, geothermal power generation by a geothermal power generator, and the like. Self-consignment to other bases by the in-house power generation facility may be included in in-house power generation. Further, instead of the in-house power generation, in-house power storage may be used. Examples of in-house power storage include power storage using a nickel hydrogen battery, power storage using an electric double layer capacitor, and power storage using a lead storage battery. In addition, the company stores its energy by generating liquefied air and liquefied nitrogen by starting a compression pump with its own power generation, which is represented by inexpensive nighttime power and solar power generators, and generates steam turbine power as needed to suppress peak power. A scheme may be used.

In addition, when a combination of the DR type price plan information and the in-house power generation type price plan information is output from the reception unit 203, the calculation unit 204 calculates the lowest price of the power price using the adjusted power demand information. Specifically, the adjusted power demand information is calculated by subtracting the amount by which the consumer can suppress the power use from the power demand information. Therefore, as compared with the first embodiment, the calculation unit 204 can calculate the lowest price of the electricity charge that is even lower. According to the second embodiment, it is also possible to display the lowest price of the power rate when the DR rate plan and the in-house power generation rate plan are combined.

The preferred embodiments of the present invention have been described above in detail, but the present invention is not limited to the specific embodiments according to the present invention, and various modifications are possible within the scope of the gist of the present invention described in the claims. -Can be changed.

The following supplementary notes will be disclosed with respect to the above description.
(Supplementary Note 1) A plurality of power rates are calculated based on a combination of a plurality of rate plan information each representing a power rate plan and power demand information representing a power demand, and the highest of the calculated plurality of power rates is calculated. A power charge calculation method in which a computer executes a process of displaying a low power charge on a display unit.
(Supplementary Note 2) The power demand information is divided into first power demand information and second power demand information based on the minimum power consumption, and the first charge plan information included in the plurality of charge plan information and the first power plan information The first power rate based on the first power demand information and the second power rate based on the second rate plan information included in the plurality of rate plan information and the second power demand information are summed up. In the first case, in which the first electricity rate plan information is contracted with a specific contract electricity, and in the second case, with the electricity obtained by increasing a predetermined amount from the specific contract electricity, and the specific electricity The electric power according to appendix 1, wherein the plurality of electric power charges are calculated by sequentially calculating for each of the third case of contracting with the electric power obtained by reducing the predetermined amount from the contracted electric power. Charge calculation method.
(Supplementary Note 3) Before calculating the plurality of power charges, a process of receiving contract standard information indicating a contract standard of the price plan information is included, and the charge plan information that does not satisfy the received contract standard information is stored in the plurality of the charge plan information. 3. The power charge calculation method according to appendix 1 or 2, wherein the plurality of power charges are calculated based on the combination of the remaining charge plan information removed from the charge plan information and the power demand information.
(Supplementary Note 4) Before calculating the plurality of power charges, a process of receiving base information indicating a base using the electric power is included, and when the base information corresponds to a discount target of the power charge, the lowest price after the discount is included. The power charge calculation method according to any one of appendices 1 to 3, wherein the power charge is displayed.
(Supplementary Note 5) The rate plan information includes coefficient information indicating an emission coefficient for each electric utility, and includes a process of calculating a greenhouse gas emission amount based on the power demand information and the coefficient information. The power charge calculation method according to any one of appendices 1 to 4.
(Supplementary Note 6) The charge plan information includes a matrix table in which one day is divided into units of a predetermined number of minutes, and one year is divided into units of one day, and a unit price stored in each of the matrix tables. 6. The power charge calculation method according to any one of Supplementary Notes 1 to 5.
(Supplementary Note 7) A plurality of power rates are calculated based on a combination of a plurality of rate plan information each representing a power rate plan and power demand information representing a power demand, and the highest of the calculated plurality of power rates is calculated. A power charge calculation program for causing a computer to execute processing, which displays a low power charge on the display unit.
(Supplementary Note 8) A calculation unit that calculates a plurality of power charges based on a combination of a plurality of price plan information that represents a power charge plan and power demand information that represents a power demand, and the plurality of calculation units calculated by the calculation unit. And a display control unit that displays the lowest price of electric power from among the electric power prices of the display unit.
(Supplementary Note 9) The calculation unit divides the power demand information into first power demand information and second power demand information based on the minimum power consumption, and includes the first power demand information included in the plurality of charge plan information. A first power rate based on rate plan information and the first power demand information, and a second rate plan information included in the plurality of rate plan information and a second power rate information based on the second power demand information. In the first case in which the first rate plan information is contracted with a specific contracted power, and in the second case with a contracted power with a predetermined amount increased from the specific contracted power In addition, the plurality of power charges are calculated by sequentially calculating each of the case and the third case of contracting with the electric power obtained by reducing the predetermined amount from the specific contract electric power. The electricity charge calculation device according to item 8.
(Supplementary note 10) Before calculating the plurality of power charges, a receiving unit that receives contract standard information indicating a contract standard of the price plan information is included, and the calculating unit includes the contract standard information received by the receiving unit. Appendix 8 characterized in that the plurality of power charges are calculated based on the combination of the remaining charge plan information obtained by removing the charge plan information that is not satisfied from the plurality of charge plan information and the power demand information. The electricity charge calculation device according to item 9.
(Supplementary Note 11) Before calculating the plurality of power charges, the display control unit includes a reception unit that receives base information indicating a base where the electric power is used, and the display control unit includes the base information received by the reception unit to reduce the power charge. The electric power charge calculation device according to any one of appendices 8 to 10, wherein the electric power charge of the lowest price after discount is displayed if the target is applicable.
(Supplementary Note 12) The rate plan information includes coefficient information indicating an emission coefficient for each electric utility, and the calculation unit calculates a greenhouse gas emission amount based on the power demand information and the coefficient information. 12. The power charge calculation device according to any one of appendices 8 to 11, characterized in that.
(Supplementary Note 13) The rate plan information includes a matrix table in which one day is divided into units of a predetermined number of minutes, and one year is divided into units of one day, and a unit price stored in each of the matrix tables. 13. The power charge calculation device according to any one of supplementary notes 8 to 12.

S power charge calculation system 100 terminal device 200 server device 201 power demand information storage unit 202 contract standard information storage unit 203 reception unit 204 calculation unit 205 display control unit

Claims (11)

The power demand information indicating the power demand is divided into first power demand information and second power demand information based on the minimum power consumption,
A first power rate based on the first rate plan information included in the plurality of rate plan information representing the power rate plan and the first power demand information, and a second rate included in the plurality of rate plan information. In the first case in which the first price plan information is contracted with a specific contracted electric power, and the total electric power charge obtained by summing the second electric power charges based on the second electric power demand information Sequential calculation is performed for each of the second case of contracting with electric power obtained by increasing the predetermined amount from the specific contracted electric power and the third case of contracting with electric power obtained by decreasing the predetermined amount of the specific contracted electric power. By doing so, you can calculate multiple electricity charges,
Displaying the lowest power rate from the calculated plurality of power rates on the display unit,
A power charge calculation method in which a computer executes the processing. Before calculating the plurality of power rates, including a process of accepting contract standard information indicating a contract standard of the price plan information,
Calculating the plurality of power rates based on the power demand information and a combination of the remaining charge plan information excluding the charge plan information that does not satisfy the received contract standard information from the plurality of charge plan information.
The power charge calculation method according to claim 1, wherein: Before calculating the plurality of power rates, including a process of receiving base information indicating the base where the power is used,
If the base information corresponds to a power rate discount target, the discounted lowest power rate is displayed,
The electric power charge calculation method according to claim 1 or 2 , characterized in that. With each table to power rate plans, based on a combination of fee plan information including the coefficient information representative of the electric utility emission factor and the power demand information representing the power demand, calculating a plurality of power rates,
Based on the power demand information and the coefficient information, calculate greenhouse gas emissions,
Displaying the lowest power rate from the calculated plurality of power rates on the display unit,
A power charge calculation method in which a computer executes the processing . With each table to power the rate plan, by dividing one day at a predetermined per-minute, and 1 year multiple comprising a matrix table divided daily units and unit prices that are stored in each of the matrix table Calculate a plurality of power rates based on the combination of rate plan information and the power demand information representing the power demand,
Displaying the lowest power rate from the calculated plurality of power rates on the display unit,
A power charge calculation method in which a computer executes the processing . The power demand information indicating the power demand is divided into first power demand information and second power demand information based on the minimum power consumption,
A first power rate based on the first rate plan information included in the plurality of rate plan information representing the power rate plan and the first power demand information, and a second rate included in the plurality of rate plan information. In the first case in which the first price plan information is contracted with a specific contracted electric power, and the total electric power charge obtained by summing the second electric power charges based on the second electric power demand information Sequential calculation is performed for each of the second case of contracting with electric power obtained by increasing the predetermined amount from the specific contracted electric power and the third case of contracting with electric power obtained by decreasing the predetermined amount of the specific contracted electric power. By doing so, you can calculate multiple electricity charges,
Displaying the lowest power rate from the calculated plurality of power rates on the display unit,
A power rate calculation program that causes a computer to execute processing. A plurality of power rates are calculated based on a combination of a plurality of rate plan information including coefficient information indicating the emission factor for each electric power supplier and the power demand information indicating the power demand, while representing each power rate plan.
Based on the power demand information and the coefficient information, calculate greenhouse gas emissions,
Displaying the lowest power rate from the calculated plurality of power rates on the display unit,
A power rate calculation program that causes a computer to execute processing. A plurality of charges, each of which represents a power rate plan, includes a matrix table in which one day is divided into predetermined minutes, and one year is divided into day units, and a unit price stored in each of the matrix tables Calculate multiple power charges based on the combination of plan information and the power demand information that represents the power demand,
Displaying the lowest power rate from the calculated plurality of power rates on the display unit,
A power rate calculation program that causes a computer to execute processing. The electric power demand information representing the electric power demand is divided into first electric power demand information and second electric power demand information based on the minimum electric power consumption, and the first electric power demand information included in each of the plurality of charge plan information representing the electric power charge plan is divided . A first power rate based on rate plan information and the first power demand information, and a second rate plan information included in the plurality of rate plan information and a second power rate information based on the second power demand information. In the first case in which the first rate plan information is contracted with a specific contracted power, and in the second case with a contracted power with a predetermined amount increased from the specific contracted power And a calculating unit that calculates a plurality of electric power charges by sequentially calculating each of the case and the third case of contracting with the electric power obtained by reducing the predetermined amount from the specific contract electric power ,
A display control unit that displays the lowest electricity price on the display unit from among the plurality of electricity charges calculated by the calculation unit;
A power rate calculation device having. A plurality of power rates are calculated based on a combination of a plurality of rate plan information including coefficient information indicating the emission factor for each electric power company and the power demand information indicating the power demand, while representing each of the power rate plans. A calculation unit that calculates the greenhouse gas emissions based on the power demand information and the coefficient information,
A display control unit that displays the lowest electricity price on the display unit from among the plurality of electricity charges calculated by the calculation unit;
A power rate calculation device having. A plurality of charges, each of which represents a power rate plan, includes a matrix table in which one day is divided into predetermined minutes, and one year is divided into day units, and a unit price stored in each of the matrix tables A calculation unit that calculates a plurality of power rates based on a combination of plan information and power demand information that represents power demand,
A display control unit that displays the lowest electricity price on the display unit from among the plurality of electricity charges calculated by the calculation unit;
A power rate calculation device having.

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