JP2010009136A - Electricity bill calculation system and electricity bill calculation method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To enable a customer to enjoy the discount service of an electricity bill according as a substation for distribution is newly installed. <P>SOLUTION: This electricity bill calculation system includes: a current gross loss electric energy calculation part for calculating a current gross loss electric energy within the feeding range of a first substation for distribution; a current gross loss costs calculation part for calculating current gross loss costs corresponding to the current gross loss electric energy; a new gross loss electric energy calculation part for calculating new gross loss electric energy within each feeding range of first and second substations for distribution; a new gross loss cost calculation part for calculating new gross loss costs corresponding to the addition result of the new gross loss electric energy; a discount service financial funds calculation part for calculating discount service financial funds by subtracting new gross loss costs from the current gross loss costs; and an electricity bill calculation part for calculating an electricity bill for a discount service target customer by distributing the discount service financial funds to every discount service target customer. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an electricity charge calculation system and an electricity charge calculation method.

Electricity charges are calculated based on the charge system according to the contract type. For example, a flat-light rate system, a pay-per-charge system, a temporary system system, a public street system system, a time-based system system, a low-voltage system, a high-voltage system, and a midnight power system Examples include a fee system (see, for example, Patent Document 1 shown below).
JP 2007-179421 A (page 1-3)

  By the way, from the standpoint of the electric power company, it is necessary to establish a new distribution substation according to the power supply balance that changes every moment based on the macro target of stable power supply. On the other hand, for example, from the standpoint of the residents around the area where the plan for the newly constructed substation is planned, the emphasis is on maintaining their own living environment rather than the above macro target. You may have to get up. In this case, regardless of whether the residents are in the planned area or not, electricity charges are calculated based on the tariff system determined by each electric power company. There is a risk of unfairness among the residents in the outside region, and there is a risk that they will not be able to sympathize with the macro target and will stick to the opposite of the plan.

  The main present invention for solving the above-described problem is that when a part of the power supply range of the existing first distribution substation is supplied by the new second distribution substation, the second distribution substation is used. An electricity rate calculation system for calculating an electricity rate for a customer subject to a discount service in connection with the establishment of a substation, wherein customer information of each supply range of the first distribution substation and the second distribution substation Based on the distribution facility information, a customer information storage unit that stores information, a distribution facility information storage unit that stores distribution facility information of each supply range of the first distribution substation and the second distribution substation, and the distribution facility information A current total loss power calculation unit that calculates a current total loss power amount in the supply range of the first distribution substation, and a current total loss amount that calculates a current total loss cost according to the current total loss power amount Based on the cost calculation department and the power distribution equipment information A new total loss energy calculation unit for calculating a new total loss energy amount in each supply range of the first distribution substation and the second distribution substation, and the new total loss amount in each supply range. A new total loss cost calculation unit that calculates a new total loss cost according to the result of adding the amount of power loss, and a discount service resource calculation unit that calculates a discount service resource by subtracting the new total loss cost from the current total loss cost And an electricity charge calculation unit that distributes the discount service resources to each discount service target customer based on the customer information and calculates an electricity charge for the discount service target customer. .

  In the above-mentioned system, in the electricity rate calculation system according to claim 1, the distribution facility information includes information on a first transformer disposed in the first distribution substation and the second distribution distribution information. Information on the second transformer disposed in the substation, information on the first distribution line extending from the first transformer disposed in the first distribution substation, and Information on a second distribution line extending from the second transformer disposed in the second distribution substation, and the current total power loss calculation unit includes the first The current total loss power amount is calculated by adding the loss power amount of the transformer and the loss power amount of the first distribution line, and the new total loss power amount calculation unit is configured to calculate the second transformer The new total loss power amount may be calculated by adding the loss power amount of the second power line and the loss power amount of the second distribution line.

  Further, in the above system, the current total loss cost calculation unit multiplies the current total loss power amount by an electricity bill or a predetermined loss evaluation unit price according to a predetermined charge system of an electric power company, and The new total loss cost calculation unit calculates a loss cost, and the new total loss cost calculation unit multiplies the result of addition of the new total loss power amount by the electricity rate or the loss evaluation unit price according to the charge system, to calculate the new total loss. Costs may be calculated.

  Further, in the above system, the customer information has a monthly power consumption based on a measurement result of a watt hour meter disposed in the discount service target customer, and the electricity rate calculation unit, the discount service resources, You may distribute according to the monthly power consumption for every said discount service object customer.

  Further, in the system, a demand prediction information storage unit that stores future demand prediction information predicted based on past load information of the first distribution substation, and based on the demand prediction information, the first A distribution facility plan processing unit that sets future distribution facility information of each supply range of the first distribution substation and the second distribution substation and stores the information in the distribution facility information storage unit. Good.

  In the above system, the discount service target customer may be a customer who resides in and near a power supply range by the second distribution substation.

  In addition, when a part of the power supply range of the existing first distribution substation is supplied by the new second distribution substation, the first distribution substation and the second distribution substation Customer information storage unit for storing customer information of each supply range of the substation, and distribution facility information storage for storing distribution facility information of each supply range of the first distribution substation and the second distribution substation And a computer that is capable of accessing each of the first and second distribution substations to calculate an electric fee for a customer subject to discount service in connection with the establishment of the second distribution substation, wherein the computer includes the distribution facility. Calculating a current total loss power amount in a supply range of the first distribution substation based on the information, and calculating a current total loss cost according to the current total loss power amount, the computer; The computer calculates, based on the distribution facility information, a new total loss power amount in each supply range of the first distribution substation and the second distribution substation, and the computer, Calculating a new total loss cost according to a result obtained by adding the new total loss power amount in each supply range; and the computer subtracts the new total loss cost from the current total loss cost to obtain a discount service resource. And calculating and calculating an electricity bill for the discount service target customer by allocating the discount service resources to the discount service target customer based on the customer information. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, the electricity rate calculation system and the electricity rate calculation method which make a customer enjoy the discount service of an electricity rate with the new installation of the distribution substation can be provided.

=== Electricity rate calculation system ===
FIG. 1 shows an example of the configuration of an electricity bill calculation system according to the present invention.
A circuit breaker CB # 0 in which a single-phase transformer 6a is disposed in an existing substation (the first distribution substation according to the claims of the present application) under the jurisdiction of an electric power company and connected to the secondary side of the transformer 6a The distribution line A is extended from. A plurality of segment switches S # 0 to S # 4 are arranged on the distribution line A, and the interval between the segment switches S # 0 to S # 4 is defined as sections # 0 to # 4. In each section # 0 to # 4, there are customers # 0 to # 4 who contract with the electric power company and pay the electricity charges based on a predetermined charge system. For convenience of explanation, customers # 0 to # 4 represent a large number of customers (enterprises, factories, shops, houses, etc.) in each section # 0 to # 4 as one customer. In the facilities of the customers # 0 to # 4, the watt hour meters 2a to 2d for measuring the used electric energy and the measurement data measured by the watt hour meters 2a to 2d are transmitted to the communication network (optical fiber cable, metal line, Transmission devices 4a to 4e for transmitting to the branch office or sales office of the electric power company via the Internet 200) are arranged.

  For convenience of explanation, FIG. 1 shows a case where the circuit breaker CB # 0 for one line is disposed in an existing substation, but in reality, a plurality of lines are disposed. For example, as shown in FIG. 2, circuit breakers CB # 0a and CB # 0b for two lines are arranged on the secondary (S) side of the transformer 6a and are arranged from the circuit breakers CB # 0a and CB # 0b. Electric wires A1 and A2 are extended. In FIG. 2, the percentage impedance of the primary (P) winding and the secondary (S) winding of the transformer 6a is represented by% R, and the power supplied to the distribution lines A1 and A2 is represented by P1 (MW) and P2. The percentage impedance of the distribution lines A1 and A2 is represented by% R. Further, as shown in FIG. 3, the transformer 6 a may be a three-phase transformer 8.

  The newly installed substation (the second distribution substation according to the claims of the present application) is a distribution substation newly planned to supply a part of the power supply range of the existing substation. In the example illustrated in FIG. 1, customers # 1, # 2, and # 3 existing in the sections # 1, # 2, and # 3 are supplied with power from the existing substation and the new substation. The newly installed substation is provided with a circuit breaker CB # 1 in the same manner as the existing substation, and the section switches S # 5, S # 6 are provided on the distribution line B extending from the circuit breaker CB # 1. Is disposed. The section # 5 on the power source side of the section switch S # 5 has a customer # 3, and the section # 6 between the section switches S # 5 and S # 6 has a customer # 2, and the section switch In section # 7 on the load side of S # 7, customer # 1 exists.

  That is, the distribution system shown in FIG. 1 is a case where the supply range of the newly installed substation is included in the supply range of the existing substation as shown in FIG. In addition, the case where the supply range of a newly installed substation includes the supply range of several existing substations may be sufficient. Specifically, as shown in FIG. 10 (b), the supply range of the new substation is a part of the total supply range of the existing substations A, B, C, and the existing substations A, B, The case where all the supply ranges of C are included is considered.

  An electricity rate calculation device 100 is installed in a branch office / sales office of an electric power company. The electricity rate calculation device 100 is a device that calculates an electricity rate for a discount service target customer who seeks an understanding of the plan as a new substation is planned. In the example shown in the figure, discount service target customers are customers # 1, # 2, and # 3 who live within the supply range of the newly installed substation. The electricity bill calculation apparatus 100 also calculates the electricity bill according to the normal fee system for the electricity bills for customers # 0 and # 4 who are not eligible for the discount service, but the description thereof will be omitted below.

  The electricity rate calculation apparatus 100 includes a communication interface (hereinafter referred to as communication I / F) 101, a CPU 102, a demand prediction database (hereinafter referred to as demand prediction DB) 103, a power distribution facility database (hereinafter referred to as power distribution facility DB). 104), a customer information database (hereinafter referred to as customer information DB) 105, a storage device 107 for storing an electricity bill calculation program, and a storage device 106 for storing a distribution facility planning program.

  The communication I / F 101 is connected to the power network 200 and receives the measurement data of the watt hour meters 2a to 2e transmitted from the transmission devices 4a to 4c disposed in the facilities of the customers # 0 to # 4. The received measurement data is stored in the customer information DB 105. The CPU 102 is an information processing apparatus that governs overall control of the electricity bill calculation apparatus 100. For example, the CPU 102 executes the electricity rate calculation program stored in the storage device 107 and the distribution facility planning program stored in the storage device 106 while accessing the demand prediction DB 103, the distribution facility DB 104, and the customer information DB 105.

  The demand forecast DB 103 is a database that stores and manages future demand forecast information that is predicted based on past load information of the existing substation, and is used when the distribution facility planning program is executed. For example, in FIG. 4, as an example of various types of information stored by the demand prediction DB 103, the sections # 0 to # 4 (distribution blocks) of the distribution line A are classified based on the demand density (kW / km2). Demand patterns (industrial, commercial, residential, etc.), load curves F (L0) to F (L4) obtained by statistically processing past load information (for example, the past 10 years), and demand patterns A table in which demand predicted values V0 to V4 obtained by correlation coefficients with model load curves for each model are associated with each other is shown.

  The distribution facility DB 104 is a database that stores and manages the distribution facility information of each supply range of the existing substation and the new substation, and is used when executing each of the distribution facility planning program and the electricity rate calculation program. For example, as an example of various kinds of information stored by the distribution facility DB 104, FIG. 5A shows a system information table that configures the distribution system, and FIG. 5B shows a distribution facility information table that configures the distribution system. Is shown.

  The system information table includes, for each section # 0 to # 4, the identifiers of the circuit breakers CB # 0 and CB # 1 and the section switches S # 0 to S # 5 that define each section, and the customers # 0 to # 4. It is the table which matched the annual average section load (kW) calculated by totaling past load information.

  The distribution facility information table associates the distribution line capacity (kW) with the short-time allowable capacity (kW) for each distribution line A extending from the existing substation and distribution line B extending from the new substation. It is a table. The distribution line capacity is the limit value of the power flow that can always be sent from the circuit breakers CB # 0, CB # 1 to the load side, and the short-time allowable capacity is the circuit breakers CB # 0, CB #. It is the limit value of power flow that can be sent from 1 to the load side in a short time.

  The customer information DB 105 is a database that stores and manages customer information for each supply range of the existing substation and the new substation, and is used when the electricity rate calculation program is executed. For example, FIG. 6 shows, as an example of customer information managed by the customer information DB 105, for each customer # 0 to # 4, personal information, substation ID, fee structure, monthly power consumption (kWh), and electricity bill ( Yen) and a table in which discount flags FL are associated with each other. The personal information is personal information such as addresses and names of the customers # 0 to # 4. The substation ID is an identifier of an existing substation and / or a new substation where each customer # 0 to # 4 is supplied with power. The fee structure is a fee structure in which each customer # 0 to # 4 contracts with an electric power company. The monthly power consumption is calculated based on the measurement data of the power meters 2a to 2e of the customers # 0 to # 4 received from the communication I / F 101. The electricity rate is a normal electricity rate calculated based on a rate structure or an electricity rate after discount service. The discount flag FL is set as 1 for a discount service target customer and as 0 for a discount service target customer.

  The storage device 106 that stores the distribution facility planning program is a program memory such as DRAM or SDRAM, or an optical disk recording medium such as a CD medium or a DVD medium. The distribution facility planning program calculates the load curves F (L0) to F (L4) and demand forecast values V0 to V4 for each section # 0 to # 4 stored in the demand forecast DB 103, and the demand forecast of the demand forecast DB 103. Based on the values V0 to V4 and the contents of the distribution facility information table of the distribution facility DB 104, the circuit breaker / section switch ID and the annual average section load after the new substation stored in the distribution facility DB 104 are calculated.

  Similar to the storage device 106, the storage device 107 that stores the electricity bill calculation program is a program memory or an optical disk recording medium. In addition, the electricity charge calculation program is based on the monthly power consumption stored in the customer information DB 105, etc., and the electricity charge according to the normal charge system for customers who are not eligible for the discount service with the customer information discount flag FL set to 0. Is calculated. In addition, based on the annual average section load stored in the power distribution facility DB 104, the monthly power consumption stored in the customer information DB 105, etc., the electricity charge described later for customers with a discount service with the customer information discount flag FL set to 1 Calculate the electricity price after discount service according to the calculation process flow.

  The storage device 107 and the storage device 106 may be integrated to store both the distribution facility planning program and the electricity rate calculation program.

=== Electricity rate calculation processing ===
With reference to the flowcharts of FIGS. 7 to 9 as appropriate, an electricity bill calculation processing flow by the electricity bill calculation system according to the present invention will be described. The existing substation and the new substation are of a two-line type using distribution lines F1 and F2 (distribution line A shown in FIG. 1) extending from the transformer 6a shown in FIG. 2, and FIG. 10 (a). As shown in Fig. 2, the supply range of the existing substation includes the entire supply range of the new substation.

FIG. 7 shows a flowchart of a process for calculating the current total loss cost C (now) corresponding to the current total loss power LPT (now) in the supply range of the existing substation.
First, the electricity bill calculation apparatus 100 has an annual average section load (W # 0, W # 1 (now) to W # 3 (now), W # 4) for each section # 0 to # 7 stored in the distribution facility DB 104. Based on ~ W # 7), the annual average load L1 (now) of the entire existing substation is specified (S700). The annual average load L1 (now) of the distribution line F1 is P1 (now), and the annual average load L2 (now) of the distribution line F2 is P2 (now).

Next, the electricity rate calculation device 100 calculates the current total loss power LPT (now) in the supply range of the existing substation based on the annual average load L1 (now) of the entire existing substation (S701). Specifically, the current total power loss LPT (now) is calculated by using the current power loss LP0 (now) of the transformer 6a and the current power loss LP1 (now) of the distribution line F1 as shown in the following equation (1). ) And the current loss power amount LP2 (now) of the distribution line F2. LP0 (now), LP1 (now), and LP2 (now) are obtained by the following equations (2) to (4).
LPT (now) = LP0 (now) + LP1 (now) + LP2 (now) (1)
LP0 (now) = copper loss Pc + iron loss Pi
=% R × (P1 (now) + P2 (now)) ² + iron loss Pi (2)
LP1 (now) =% R × P1 (now) ² ÷ power factor (cos θ) ² Equation (3)
LP2 (now) =% R × P2 (now) ² ÷ power factor (cos θ) ² Equation (4)

Next, the electricity rate calculation device 100 calculates the current total loss cost C (now) corresponding to the current total loss power LPT (now) of the existing substation (S702). Specifically, as shown in the following equation (5), the current total power loss LPT (now) of the existing substation per year is calculated as the annual power loss YLPT (now). The loss factor S used in the equation (5) is a weighted addition sum of the load factor (= average load / maximum load × 100) and the square of the load factor as in the following equation (6). Then, as shown in equation (7), the current total loss cost C (now) of the existing substation is calculated by multiplying the annual power loss YLPT (now) by a predetermined loss evaluation unit price U (yen / kWh). In addition to the loss evaluation unit price U, an electricity charge according to the charge system of the electric power company may be used.
YLPT (now) = LPT (now) × 24 × 365 × loss factor S (5)
S = 0.3 × load factor + 0.7 × load factor ² Equation (6)
C (now) = YLPT (now) × U (7)

  FIG. 8 is a flowchart of a process for calculating a new total loss cost C (new) corresponding to a new total loss energy LPT (new) obtained by adding up the total loss energy in each supply range of the existing substation and the new substation. It is shown.

  First, the electricity bill calculation apparatus 100 has an annual average section load (W # 0, W # 1 (new) to W # 3 (new), W # 4) for each section # 0 to # 7 stored in the distribution facility DB 104. Based on ~ W # 7), the annual average load L1 (new) in the supply range of the existing substation and the annual average load L2 (new) in the supply range of the new substation are specified (S800). The annual average section load stored in the distribution facility DB 104 is used for future distribution facility plans for each supply range of the existing substation and the new substation based on the demand prediction values V0 to V4 stored in the demand prediction DB103. Set accordingly. Below, the annual average load L1 (new) of the distribution line F1 of the existing substation is P1 (new), the annual average load L2 (new) of the distribution line F2 of the existing substation is P2 (new), and the newly installed substation The annual average load L2 of the distribution line F1 is P1 ′, and the annual average load L2 of the distribution line F2 of the newly installed substation is P2 ′.

Next, based on the annual average load L1 (new) of the entire existing substation and the annual average load L2 of the entire new substation, the electricity rate calculation device 100 calculates the existing substation and the new substation as shown in Equation (8). A new total power loss LPT (new) obtained by adding up the total power loss LPT1 and LPT2 in each supply range is calculated (S801). The total loss power amounts LPT1 and LPT2 are obtained by the same calculation as the current total loss power amount LPT (now) obtained by the equation (1).
LPT (new) = LPT1 + LPT2 (8)

Next, the electricity rate calculation device 100 calculates a new total loss cost C (new) corresponding to the total loss power LPT (new) of the existing substation and the new substation (S802). Specifically, as shown in Equation (9), the new total loss cost C1 corresponding to the new total loss power amount LPT1 of the existing substation and the new total loss cost C2 corresponding to the new total loss power amount LPT2 of the new substation The result of adding and is the new total loss cost C (new). The new total loss costs C1 and C2 are obtained by the same calculation as the current total loss cost C (now) obtained by the equation (7).
C (new) = C1 + C2 (9)

Fig. 9 shows the calculation of the electricity bill Mk (k = 0 to n) for customers eligible for discount services associated with the plan for the new substation based on the current total loss cost C (now) and the new total loss cost C (new) The flowchart of the process to perform is shown.
First, the electricity rate calculation device 100 calculates the monthly discount service based on the annual discount service resources obtained by subtracting the new total loss cost C (new) from the current total loss cost C (now) as shown in Equation (10). The resource O is calculated (S900).
O = {C (now) −C (new)} ÷ 12 Equation (10)

  Next, based on the substation ID for each customer stored in the customer information DB 105, the electricity rate calculation apparatus 100 searches for the customer ID belonging to the discount service application range and associates it with the searched customer ID. The discount flag FL to be set is set to 1 (S901). Note that the discount flag FL associated with the customer IDs not to be searched is originally set to 0.

Next, the electricity rate calculating device 100 calculates the allocated resource DO per predetermined amount of electricity (for example, 1 kWh) (S902). Specifically, as shown in the following equation (11), the allocated resource DO is calculated by dividing the monthly discount service resource O by the total value of the monthly power consumption Tk of all discount service target customers k.
DO = O + ΣTk (11)

Next, the electricity rate calculation apparatus 100 calculates the electricity rate Mk for the discount service target customer k by allocating the monthly discount service resources O to each discount service target customer k (S903). Specifically, as shown in the following equation (12), it is obtained by discounting the monthly usage fee F (Tk) according to the normal fee system by multiplying the monthly usage power amount Tk by the allocated resource DO.
Mk = F (Tk) −Tk × DO Expression (12)

  Note that the discount service is a heavy burden on the electric power company if it continues in the future, so a restriction may be imposed that the discount service can be enjoyed only for a predetermined period (for example, 10 years).

=== Model calculation example ===
Hereinafter, a model calculation example according to the above-described electricity rate calculation processing flow using the set values of various parameters as shown in the following table will be shown. For convenience of model calculation, the power factor (cos θ) in the equations (3) and (4) and the loss coefficient S in the equation (5) are considered to be constants and are not taken into consideration. In addition, the annual average load of the discount service application range by the existing substation is divided into two equal parts from the existing substation and the new substation.

First, the current total loss cost C (now) in the supply range of the existing substation is calculated as shown in the following table using Equations (1) to (4).

Next, the new total loss cost C (new), which is the sum of the total loss costs in each supply range of the existing substation and the new substation, is calculated as shown in the following table using the formulas (1) to (4).

Next, using the formulas (5) to (12), the electricity rate M of the discount service target customer A is calculated as shown in the following table.

  According to the above system, it is necessary to calculate discount service resources based on the difference in the total loss cost of the power supply range before and after the planning of the new substation, and the power company needs to ask the power company to understand the plan of the new substation. A certain discount service target customer can be allocated. As a result, the discount service target customer can enjoy a discount service for electricity charges as a merit of the plan for the new substation. For this reason, unfairness is corrected in comparison with customers who do not particularly need to understand the plan of the new substation (for example, residents in areas far from the planned site of the new substation). It is expected that the plan for the new substation will proceed without any problems and that the total cost for the plan for the new substation will be reduced.

  Further, in the above system, the current total power loss amount and the new total power loss amount can be estimated easily and accurately based on the addition result of the power loss amounts of the transformer and the distribution line, which are the main facilities of the distribution substation.

  Further, in the above system, the current total loss cost and the new total loss cost can be estimated by multiplying the current total loss power amount and the new total loss power amount by an electricity rate according to a predetermined charge system of the power company. In other words, the current total loss cost and the new total loss cost for obtaining the discount service funds are determined based on the electric power company's tariff system, and it is unfair to either the discount service customer or the non-discount service customer. It is not a forehead that can create a sense of fairness. Or, in order to create a sense of fairness between the two companies and enjoy some of the benefits for the power company, the current total power loss and the new total power loss are calculated based on a predetermined loss evaluation unit price (for example, from the normal charge to the power company's profit). It may be converted by multiplying the amount obtained by subtracting the minutes.

  In the above system, the discount service resources can be allocated according to the monthly power consumption for each discount service target customer, so that the discount service according to the monthly power consumption can be enjoyed. For this reason, it is not a uniform discount service among discount service target customers, and fairness can be considered among discount service target customers.

  Moreover, in the above system, the distribution facilities should generally be changed one by one according to the load condition, and in line with future distribution facility plans according to demand forecasts for customers subject to discount services. Discount service resources can be calculated accurately (according to the actual situation).

  In the above system, customers who are eligible for discount service are customers who live in and around the power supply area of the new substation (for example, residents' associations and neighborhood associations), so that the power company understands the plans for the new substation. It is possible to extract the customers who need to request without omission.

  Although the present embodiment has been described above, the above-described examples are for facilitating the understanding of the present invention, and are not intended to limit the present invention. The present invention can be changed / improved without departing from the spirit thereof, and the present invention includes equivalents thereof.

It is the figure which showed the structure of the electricity bill calculation system which concerns on one Embodiment of this invention. It is a mimetic diagram of a distribution substation concerning one embodiment of the present invention. It is a schematic diagram of the distribution substation which concerns on other one Embodiment of this invention. It is the figure which showed an example of the table memorize | stored in demand prediction DB which concerns on one Embodiment of this invention. FIG. 5A is a diagram showing an example of a system information table stored in the distribution facility DB according to the embodiment of the present invention, and FIG. 5B is the distribution facility information according to the embodiment of the present invention. It is the figure which showed an example of the table. It is the figure which showed an example of the table memorize | stored in customer information DB which concerns on one Embodiment of this invention. It is a flowchart for demonstrating the electricity bill calculation flow which concerns on one Embodiment of this invention. It is a flowchart for demonstrating the electricity bill calculation flow which concerns on one Embodiment of this invention. It is a flowchart for demonstrating the electricity bill calculation flow which concerns on one Embodiment of this invention. FIG. 10A is a diagram showing an example of a distribution system after the establishment of a substation according to an embodiment of the present invention, and FIG. 10B is a distribution after the establishment of a substation according to an embodiment of the present invention. It is the figure which showed the other example of the system | strain.

Explanation of symbols

2a to 2e Electricity meters 4a to 4e Transmission devices 6a and 6b Transformer 100 Electricity rate calculation device (computer)
101 Communication I / F
102 CPU (current total loss energy calculation unit, current total loss cost calculation unit, new total loss energy calculation unit, new total loss cost calculation unit, discount service resource calculation unit, electricity rate calculation unit, distribution facility plan processing unit)
103 demand forecast DB (demand forecast information storage unit)
104 Power distribution facility DB (Power distribution facility information storage unit)
105 Customer information DB (customer information storage unit)
106 storage device 107 storage device 200 communication network

Claims (7)

In the case where a part of the power supply range of the existing first distribution substation is supplied by the new second distribution substation, a customer eligible for discount service accompanying the new installation of the second distribution substation An electricity bill calculation system that calculates the electricity bill for
A customer information storage unit for storing customer information of each supply range of the first distribution substation and the second distribution substation;
A distribution facility information storage unit for storing distribution facility information of each supply range of the first distribution substation and the second distribution substation;
Based on the distribution facility information, a current total loss power calculation unit that calculates a current total loss power amount in the supply range of the first distribution substation;
A current total loss cost calculation unit for calculating a current total loss cost according to the current total loss power,
Based on the distribution facility information, a new total loss energy calculation unit that calculates a new total loss energy amount in each supply range of the first distribution substation and the second distribution substation, and
A new total loss cost calculation unit for calculating a new total loss cost according to a result of adding the new total loss power amount in each of the supply ranges;
A discount service resource calculation unit for calculating a discount service resource by subtracting the new total loss cost from the current total loss cost;
Based on the customer information, the discount service resources are allocated to each discount service target customer, and an electricity charge calculation unit for calculating an electricity charge for the discount service target customer;
An electricity bill calculation system characterized by comprising: In the electricity bill calculation system according to claim 1,
The distribution facility information is
Information on the first transformer disposed in the first distribution substation, information on the second transformer disposed in the second distribution substation, and the first distribution Information on the first distribution line extending from the first transformer disposed in the substation and the second transformer disposed in the second distribution substation And information on the second distribution line
The current total power loss calculation unit
Calculating the current total power loss by adding the power loss of the first transformer and the power loss of the first distribution line;
The new total power loss calculation unit
Calculating the new total power loss by adding the power loss of the second transformer and the power loss of the second distribution line;
Electricity rate calculation system characterized by In the electricity bill calculation system according to claim 1,
The current total loss cost calculation unit
Multiplying the current total loss power amount by an electricity bill or a predetermined loss evaluation unit price according to a predetermined charge system of a power company to calculate the current total loss cost,
The new total loss cost calculator
The new total loss cost is calculated by multiplying the addition result of the new total loss energy by the electricity rate or the loss evaluation unit price corresponding to the charge system,
An electricity bill calculation system characterized by this. In the electricity bill calculation system according to claim 1,
The customer information has a monthly power consumption based on a measurement result of a watt hour meter disposed in the discount service target customer,
The electricity bill calculation unit distributes the discount service resources according to the monthly power consumption for each customer targeted for the discount service.
An electricity bill calculation system characterized by this. In the electricity bill calculation system according to claim 1,
A demand prediction information storage unit for storing future demand prediction information predicted based on past load information of the first distribution substation;
Distribution facility for setting future distribution facility information of each supply range of the first distribution substation and the second distribution substation based on the demand forecast information and storing it in the distribution facility information storage unit A plan processing unit;
An electricity bill calculation system characterized by comprising: In the electricity bill calculation system according to claim 1,
The customer targeted for the discount service is a customer residing in and near the power supply range of the second distribution substation;
Electricity rate calculation system characterized by When a part of the power supply range of the existing first distribution substation is supplied by the new second distribution substation, the first distribution substation and the second distribution substation are supplied. A customer information storage unit that stores customer information of each supply range; a distribution facility information storage unit that stores distribution facility information of each supply range of the first distribution substation and the second distribution substation; , A computer that can access each of the above, is an electricity bill calculation method for calculating an electricity bill for customers eligible for discount service in conjunction with the establishment of the second distribution substation,
The computer calculating, based on the distribution facility information, a current total loss power amount in a supply range of the first distribution substation;
The computer calculating a current total loss cost according to the current total power loss;
The computer, based on the distribution facility information, respectively calculating a new total power loss in each supply range of the first distribution substation and the second distribution substation;
The computer calculating a new total loss cost according to a result of adding the new total loss energy in each of the supply ranges;
The computer calculates a discount service resource by subtracting the new total loss cost from the current total loss cost;
The computer allocates the discount service resources to the discount service target customers based on the customer information, and calculates an electricity charge for the discount service target customers;
An electricity bill calculation method characterized by comprising:

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