WO2021124798A1

WO2021124798A1 - Calculation system

Info

Publication number: WO2021124798A1
Application number: PCT/JP2020/043418
Authority: WO
Inventors: 藤本　隆
Original assignee: 藤本　隆
Priority date: 2019-12-18
Filing date: 2020-11-20
Publication date: 2021-06-24
Also published as: JP2021096705A; JP6749621B1

Abstract

A calculation system (10) comprises: a distribution board (12); a first measurement device (14) that measures the received power amount of alternating current power; a second measurement device (16) that measures the usage amount of alternating current power; and a control device (18) that calculates a daily electricity charge for first through third dwellings (1-3). The control device (18): (1) calculates, for each unit time in one day, a received power charge for each of two alternating currents received by the distribution board (12), by multiplying the received power amount for each of the two alternating currents by a unit price for each of the two alternating currents, calculates a total received power charge by adding the respective received power charges for the two alternating currents, and calculates an electricity charge for each of the first through third dwellings (1-3) by allocating the total received power charge according to the usage amount ratio for the first through third dwellings (1-3); and (2) calculates a daily electricity charge by adding the electricity charges of the respective unit times, for each of the first through third dwellings (1-3).

Description

Calculation system

The present invention relates to a calculation system, and more particularly to a calculation system for calculating electricity charges.

Conventionally, power generation companies that generate electricity using solar power, etc. are known. For example, Patent Document 1 discloses a system in which a power generation company that generates electric power using solar power or the like and a consumer can carry out electric power transactions. The system includes a watt hour meter owned by a customer, a server device owned by a power generation company that performs data communication with the watt hour meter, and a power generation device owned by the power generation company. The server device presents the selling price to the watt-hour meter, the watt-hour meter informs the server device that it wants to purchase electricity based on the presented selling price, and the power generation device informs the consumer of the electricity. Supply.

By the way, some power generation companies conclude a power sales agreement (hereinafter, also referred to as PPA (Power Purchase Agreement)) with a consumer, install a solar panel on the roof of the customer's house, etc., and use the solar panel. Solar PPA power generation companies that generate electricity are known. Consumers can purchase and use electricity from solar PPA power providers in addition to electricity from grid power providers. As a result, even if the power from the grid power source is cut off due to a disaster or the like, the power from the solar PPA power generation company can be purchased and used. In this way, by making it possible to use the electric power from the solar PPA power generation company, it is possible to construct a disaster prevention compatible distribution network. In other words, a distributed or fail-safe grid can be constructed.

Japanese Unexamined Patent Publication No. 2019-50054

However, in a condominium such as an apartment, when power is supplied to a plurality of consumers by using the power from a grid power company or a new power company and the power from a solar PPA power generation company, a plurality of demands are required. There is a problem that it is difficult to calculate the electricity rate because it is not known how much each house uses the electricity from the grid electric power company or the new electric power company and the electric power from the PPA power generation company. This issue hinders the spread of so-called solar PPA in condominiums and hinders the construction of disaster-prevention-responsive power grids.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a calculation system capable of easily calculating an electricity rate.

In order to achieve the above object, one form of the calculation system according to the present invention receives a plurality of AC power including AC power obtained by converting AC power from a grid power source and DC power from a DC power source. Then, each unit time of the day of the relay device that supplies AC power to a plurality of consumers using the plurality of AC power received and the plurality of AC power received by the relay device. A first measuring device for measuring the amount of power received in the above, a second measuring device for measuring the amount of the AC power supplied from the relay device in each unit time for each of the plurality of consumers, and the above. A control device for calculating the daily electricity charge of each of the plurality of consumers based on the received amount of each of the plurality of AC powers and the usage amount of each of the plurality of consumers is provided. The second measuring device has a plurality of smart meters provided corresponding to each of the plurality of consumers, and each of the plurality of smart meters relates to a corresponding consumer among the plurality of consumers. The amount of the AC power supplied from the relay device in each unit time is measured, and the control device (1) receives the plurality of AC power received by the relay device in each unit time. By multiplying each of the received power amounts by the unit price of each of the plurality of AC power, each power receiving charge of the plurality of AC power is calculated, and the respective power receiving charges of the plurality of AC power are added up. By calculating the total power receiving charge of the plurality of AC power and distributing the total power receiving charge according to the ratio of the usage amount of the plurality of consumers, the electricity of each of the plurality of consumers is obtained. The charge is calculated, and (2) the daily electricity charge is calculated by adding up the electricity charges in each unit time for each of the plurality of consumers.

The present invention provides a calculation system that can easily calculate electricity charges.

FIG. 1 is a block diagram showing a configuration of a calculation system according to an embodiment of the present invention. FIG. 2 is a graph showing the first power reception amount and the second power reception amount measured by the first measuring device in the calculation system of FIG. 1 in a certain day, and FIG. 2A is a graph showing the period from 0:00 to 12:00. It is a graph which shows, and (b) is a graph which shows from 12:00 to 24:00. FIG. 3 is a graph showing the usage amount measured by the second measuring device in the calculation system of FIG. 1 in a certain day, (a) is a graph showing the first usage amount, and (b) is a graph showing the first usage amount. It is a graph which shows the 2nd usage amount, and (c) is a graph which shows the 3rd usage amount. FIG. 4 is a flow chart showing an example of the operation of the control device in the calculation system of FIG. FIG. 5 is a flow chart showing an example of the operation included in step S1 of FIG. 4, and is a flow chart showing an example of the operation when the control device in the calculation system of FIG. 1 calculates the electricity charge in a unit time. is there. FIG. 6 is a flow chart showing an example of the operation when the control device in the calculation system of FIG. 1 calculates the electricity charge in a unit time in the daytime. FIG. 7 is a flow chart showing an example of the operation when the control device in the calculation system of FIG. 1 calculates the electricity charge in a unit time at night. FIG. 8 is a flow chart showing an example of the operation when the control device in the calculation system of FIG. 1 calculates the electricity charge in the unit time in the early morning or the evening. FIG. 9 is a block diagram showing another example of a plurality of consumers.

Hereinafter, embodiments of the calculation system according to the present invention will be described in detail with reference to the drawings. It should be noted that all of the embodiments described below show a preferred specific example of the present invention. Numerical values, components, arrangement positions and connection forms of components, steps, order of steps, etc. shown in the following embodiments are examples, and are not intended to limit the present invention. Moreover, each figure is not necessarily exactly illustrated.

FIG. 1 is a block diagram showing a configuration of a calculation system 10 according to an embodiment of the present invention. As shown in FIG. 1, the calculation system 10 includes a distribution board 12, a first measuring device 14, a second measuring device 16, and a control device 18. The calculation system 10 is a system for calculating the daily electricity charges of a plurality of consumers. In the present embodiment, the plurality of consumers are the first to third dwelling units 1 to 3 in the condominium. The plurality of consumers may be two dwelling units or four or more dwelling units. Further, the plurality of consumers may be a plurality of detached houses, or may include a plurality of dwelling units and a plurality of detached houses in the condominium.

The distribution board 12 receives a plurality of AC powers, and supplies the AC powers to the first to third dwelling units 1 to 3 using the received plurality of AC powers. In this embodiment, the distribution board 12 receives two AC powers. The two AC powers are the first AC power, which is the AC power from the grid power supply 4, and the second AC power, which is the AC power obtained by converting the DC power from the solar panel 5. In the present embodiment, the distribution board 12 corresponds to the relay device.

The distribution board 12 preferentially receives the second AC power. Specifically, when the AC power supplied to the 1st to 3rd dwelling units 1 to 3 can be covered by using only the 2nd AC power, the distribution board 12 receives only the 2nd AC power, and the second AC power is received. 2 AC power is supplied to the first to third dwelling units 1 to 3 using only AC power. On the other hand, if the second AC power alone cannot cover the AC power supplied to the first to third dwelling units 1 to 3, the distribution board 12 further receives the first AC power and the first AC power. And the second AC power is used to supply AC power to the first to third dwelling units 1 to 3.

Further, the distribution board 12 receives the third AC power, which is the AC power obtained by converting the DC power from the storage battery 6, when the first AC power cannot be received due to a disaster or the like. In other words, the third AC power is AC power supplied to the distribution board 12 when the distribution board 12 cannot receive the first AC power due to a disaster or the like. Also in this case, if the AC power supplied to the 1st to 3rd dwelling units 1 to 3 can be covered by using only the 2nd AC power, the distribution board 12 receives only the 2nd AC power, and the second AC power is received. 2 AC power is supplied to the first to third dwelling units 1 to 3 using only AC power. On the other hand, if the second AC power alone cannot cover the AC power supplied to the first to third dwelling units 1 to 3, the distribution board 12 further receives the third AC power and the second AC power. And the third AC power is used to supply AC power to the first to third dwelling units 1 to 3.

In this way, a distributed distribution network is constructed so that the distribution board 12 can receive not only the first AC power but also the second AC power and the third AC power.

The number of the plurality of AC powers is not limited to two. For example, the distribution board 12 is obtained by converting AC power from another AC power source and / or DC power from another DC power source. The generated AC power may be further received. In this embodiment, the solar panel 5 corresponds to a DC power source.

The grid power company 7 is a company that supplies the first AC power. In other words, the first AC power is AC power supplied from the grid power company 7. The first AC power is transformed by the transformer 20, for example, from 6600 [V] to 100 to 200 [V]. The first AC power may be AC power supplied by a new power company instead of the grid power company 7. As described above, the AC power from the grid power source 4 may be the AC power from the grid power company 7 or the AC power from the new power company.

The first power generation company 8 is a PPA power generation company that concludes a PPA with the first to third dwelling units 1 to 3 in the condominium and generates solar power using the solar panel 5 installed in the condominium. The second AC power is obtained by converting the DC power from the solar panel 5 by the power conditioner 22 without storing it in a storage battery or the like. Further, the second AC power is transformed into the same voltage as the first AC power by the power conditioner 22.

The second power generation company 9 is a company that stores DC power in the storage battery 6 and supplies the DC power stored in the storage battery 6. For example, an electric vehicle may be used as the storage battery 6. The second power generation company 9 has a DC power network different from that of the grid power company 7, and transmits the DC power stored in the storage battery 6 using the power network. For example, the second power generation company 9 secures a capacity of 1.2 million kWh. The third AC power is obtained by converting the DC power from the storage battery 6 by the power conditioner 24. Further, the third AC power is transformed into the same voltage as the first AC power and the second AC power by the power conditioner 24.

The second power generation company 9 supplies the DC power from the storage battery 6 via the power conditioner 24 when the distribution board 12 cannot receive the first AC power due to a disaster or the like. 3 Provide power outage insurance to cover the power of 1 to 3 dwelling units. For example, the second power generation company 9 receives monthly insurance premiums from the first to third dwelling units 1 to 3, and when the distribution board 12 cannot receive the first AC power, the first to first power generation companies 9 receive power. 3 Power is supplied to dwelling units 1 to 3. The calculation system 10 can calculate the daily electricity charges of the first to third dwelling units 1 to 3 even when the third AC power is supplied based on such power outage insurance.

Further, the second power generation company 9 supplies the third AC power via the power conditioner 24, and also supplies the DC power from the storage battery 6 to the distribution board 12 without going through the power conditioner 24, for example. The DC power supplied to the distribution board 12 is supplied to the first to third dwelling units 1 to 3 via the metal line of the telephone line of the first to third dwelling units 1 to 3.

Further, the second power generation company 9 may, for example, not supply the DC power from the storage battery 6 to the distribution board 12 but transmit it to each floor of the condominium via a dedicated line. The DC power transmitted to each floor is supplied to each dwelling unit on each floor.

As a result, the first to third dwelling units 1 to 3 can use the radio, LED (Light Emitting Diode) lighting, and the like by using the direct current power from the storage battery 6. For example, the current of the DC power is 30 [A]. Further, for example, the voltage of the DC power is 50 [V].

The first measuring device 14 measures the amount of power received in each unit time of the day for each of the two AC powers (first AC power and second AC power) received by the distribution board 12. In addition, the first measuring device 14 measures the amount of received power in each unit time of the third AC power supplied based on the power outage insurance. The first measuring device 14 includes a first power meter 26, a second power meter 28, and a third power meter 30. The first power meter 26 measures the first received amount, which is the received amount of the first AC power. Specifically, the first power meter 26 measures the first power received amount in each unit time. The second power meter 28 measures the second received amount, which is the received amount of the second AC power. Specifically, the second power meter 28 measures the second power received amount in each unit time. The third power meter 30 measures the third power reception amount, which is the power reception amount of the third AC power. Specifically, the third power meter 30 measures the third power received amount in each unit time. The unit time is 30 minutes, 1 hour, or the like. For example, the first power meter 26, the second power meter 28, and the third power meter 30 are smart meters and measure the amount of power received for each 30 minutes in a day. In other words, the first power meter 26, the second power meter 28, and the third power meter 30 measure the 30-minute value of the received power amount.

FIG. 2 is a graph showing the first power reception amount and the second power reception amount measured by the first measurement device 14 in the calculation system 10 of FIG. 1 in a certain day, and FIG. 2A is a graph showing the amount of power received from 0:00 to 12:00. It is a graph which shows up to, and (b) is a graph which shows from 12:00 to 24:00. The vertical axis shows the amount of power received, and the horizontal axis shows the time. In FIG. 2, 0 on the horizontal axis indicates 1 hour from 0 o'clock to 1 o'clock, 1 on the horizontal axis indicates 1 hour from 1 o'clock to 2 o'clock, and 23 on the horizontal axis indicates. It shows one hour from 23:00 to 24:00. For example, as shown in FIG. 2, the first measuring device 14 obtains the first power receiving amount and the second power receiving amount in each 30 minutes from 0:00 to 24:00 in a certain day. In other words, the first measuring device 14 obtains the first power receiving amount and the second power receiving amount every 30 minutes from 0:00 to 24:00 in a certain day.

As shown in FIG. 2, it can be seen that only the second AC power is received during the daytime (see the second amount of power received in FIG. 2). In this way, the distribution board 12 preferentially receives the second AC power having a low unit price, and uses only the second AC power to cover the AC power supplied to the first to third dwelling units 1 to 3. Supply AC power to the first to third dwelling units 1 to 3 using only the second AC power. If the distribution board 12 cannot cover the AC power supplied to the first to third dwelling units 1 to 3 with only the second AC power, the distribution board 12 further receives the first AC power, and the second AC power and the second AC power. AC power is supplied to the first to third dwelling units 1 to 3 by using 1 AC power. Further, in the night time zone, the solar panel 5 cannot generate electricity and cannot receive the second AC power. Therefore, the distribution board 12 receives only the first AC power and uses only the first AC power. AC power is supplied to the 1st to 3rd dwelling units 1 to 3.

Returning to FIG. 1, the second measuring device 16 measures the usage amount of the AC power supplied from the distribution board 12 in each unit time for each of the first to third dwelling units 1 to 3. The second measuring device 16 has first to third smart meters 32 to 36 provided corresponding to each of the first to third dwelling units 1 to 3. Each of the first to third smart meters 32 to 36 determines the amount of AC power used in each unit time supplied from the distribution board 12 for the corresponding dwelling units of the first to third dwelling units 1 to 3. measure. The first smart meter 32 is provided corresponding to the first dwelling unit 1 and measures the usage amount of the fourth AC power, which is the AC power supplied from the distribution board 12 to the first dwelling unit 1. That is, the first smart meter 32 measures the first usage amount, which is the usage amount of the fourth AC power used by the first dwelling unit 1. The first smart meter 32 measures the first usage amount in each unit time. The second smart meter 34 is provided corresponding to the second dwelling unit 2 and measures the usage amount of the fifth AC power, which is the AC power supplied from the distribution board 12 to the second dwelling unit 2. That is, the second smart meter 34 measures the second usage amount, which is the usage amount of the fifth AC power used by the second dwelling unit 2. The second smart meter 34 measures the second usage amount in each unit time. The third smart meter 36 is provided corresponding to the third dwelling unit 3 and measures the usage amount of the sixth AC power, which is the AC power supplied from the distribution board 12 to the third dwelling unit 3. That is, the third smart meter 36 measures the third usage amount, which is the usage amount of the sixth AC power used by the third dwelling unit 3. The third smart meter 36 measures the third usage amount in each unit time. As described above, the unit time is 30 minutes, 1 hour, or the like. In this embodiment, the first smart meter 32, the second smart meter 34, and the third smart meter 36 measure the usage amount for each 30 minutes in a day. In other words, the first smart meter 32, the second smart meter 34, and the third smart meter 36 measure the 30-minute value of the usage amount.

FIG. 3 is a graph showing the usage amount measured by the second measuring device 16 in the calculation system 10 of FIG. 1 in a certain day, (a) is a graph showing the first usage amount, and (b). Is a graph showing the second usage amount, and (c) is a graph showing the third usage amount. The vertical axis shows the amount used, and the horizontal axis shows the time. In FIG. 3, 0 on the horizontal axis indicates 1 hour from 0 o'clock to 1 o'clock, 1 on the horizontal axis indicates 1 hour from 1 o'clock to 2 o'clock, and 23 on the horizontal axis indicates. It shows one hour from 23:00 to 24:00. For example, as shown in FIG. 3A, the second measuring device 16 obtains the first usage amount for each 30 minutes from 0:00 to 24:00 in a certain day. Further, as shown in FIG. 3B, the second measuring device 16 can obtain the second usage amount for each 30 minutes from 0:00 to 24:00 in a certain day. Further, as shown in FIG. 3C, the second measuring device 16 can obtain the third usage amount for each 30 minutes from 0:00 to 24:00 in a certain day. In this way, the second measuring device 16 obtains the first usage amount, the second usage amount, and the third usage amount every 30 minutes from 0:00 to 24:00 in a certain day.

The total value of the first power reception amount and the second power reception amount in the unit time is substantially equal to the total value of the first usage amount, the second usage amount, and the third usage amount in the unit time. Specifically, the total value of the first power reception amount and the second power reception amount in the 30 minutes from 0:00 to 0:30 in a certain day is from 0:00 to 0:00 in the day. It is substantially equal to the total value of the first usage amount, the second usage amount, and the third usage amount in 30 minutes up to 30 minutes. The same applies to each 30 minutes from 0:30 to 24:00.

Further, when the first AC power cannot be received and the third AC power is received, the total value of the second power received amount and the third power received amount in the unit time is the first usage amount in the unit time. It is substantially equal to the total value of the second usage amount and the third usage amount. Specifically, the total value of the second and third power received in the 30 minutes from 0:00 to 0:30 in a certain day is from 0:00 to 0:00 in the day. It is substantially equal to the total value of the first usage amount, the second usage amount, and the third usage amount in 30 minutes up to 30 minutes. The same applies to each 30 minutes from 0:30 to 24:00.

Returning to FIG. 1, the control device 18 acquires the received amount of each of the two AC powers (first AC power and second AC power) received by the distribution board 12 from the first measuring device 14. Further, the control device 18 acquires the amount of the third AC power received by the distribution board 12 from the first measuring device 14. Specifically, the control device 18 acquires the first power received from the first wattmeter 26, the second power received from the second wattmeter 28, and the third power received from the third wattmeter 30. To do.

Further, the control device 18 acquires the usage amount of the AC power supplied from the distribution board 12 for each of the first to third dwelling units 1 to 3. Specifically, the control device 18 acquires the first usage amount from the first smart meter 32, the second usage amount from the second smart meter 34, and the third usage amount from the third smart meter 36. To do.

Although the details will be described later, the control device 18 is based on the amount of power received by each of the two AC powers (first AC power and the second AC power) and the amount of each of the first to third dwelling units 1 to 3. Then, the daily electricity charges for the first to third dwelling units 1 to 3 are calculated. As described above, the control device 18 is a device for calculating the electricity charge, and is realized by, for example, a processor or the like.

The configuration of the calculation system 10 according to the present embodiment has been described above. Next, an example of the operation of the calculation system 10 configured as described above will be described.

FIG. 4 is a flow chart showing an example of the operation of the control device 18 in the calculation system 10 of FIG. FIG. 5 is a flow chart showing an example of the operation included in step S1 of FIG. 4, and is a flow showing an example of the operation when the control device 18 in the calculation system 10 of FIG. 1 calculates the electricity charge in a unit time. It is a figure. An example of the operation of the control device 18 when calculating the daily electricity charges of the first to third dwelling units 1 to 3 will be described with reference to FIGS. 4 and 5.

As shown in FIG. 4, first, the control device 18 calculates the electricity charges of the first to third dwelling units 1 to 3 in each unit time of the day (step S1). Specifically, the control device 18 has a first electricity charge, which is an electricity charge for the first dwelling unit 1, a second electricity charge, which is an electricity charge for the second dwelling unit 2, and a second electricity charge for each unit time of the day. 3 Calculate the third electricity rate, which is the electricity rate for the dwelling unit 3.

For example, the control device 18 calculates the first electricity charge, the second electricity charge, and the third electricity charge for each 30 minutes from 0:00 to 24:00. Specifically, the control device 18 calculates the first electricity charge, the second electricity charge, and the third electricity charge for 30 minutes from 0:00 to 0:30, and from 0:30 to 1:00. The first electricity charge, the second electricity charge, and the third electricity charge in the 30 minutes of the above are calculated. The same applies to 30 minutes from 1:00 to 1:30 ... 30 minutes from 23:30 to 24:00.

Here, with reference to FIG. 5, an example of the operation of the control device 18 when calculating the first electricity charge, the second electricity charge, and the third electricity charge per unit time in a day will be described. The control device 18 performs the operation shown in FIG. 5 for each unit time of the day to charge the first electricity charge, the second electricity charge, and the third electricity charge in each unit time of the day. calculate.

For example, the control device 18 performs the operation shown in FIG. 5 for 30 minutes from 0:00 to 0:30, so that the first electricity charge and the second electricity per 30 minutes from 0:00 to 0:30 Calculate the charge and the third electricity charge. Similarly, the control device 18 performs the operation shown in FIG. 5 for 30 minutes from 0:30 to 1:00, so that the first electricity charge per 30 minutes from 0:30 to 1:00, the second. Calculate the electricity rate and the third electricity rate. The same applies to 30 minutes from 1:00 to 1:30 ... 30 minutes from 23:30 to 24:00.

As shown in FIG. 5, first, the control device 18 determines the amount of power received by each of the two AC powers (first AC power and second AC power) in each unit time, and the two AC powers in each unit time. By multiplying the unit price, the power receiving charge for each of the two AC powers in the unit time is calculated (step S11). In the following description, the power receiving charge of the first AC power will be referred to as the first power receiving charge, and the power receiving charge of the second AC power will be described as the second power receiving charge. The control device 18 calculates the first power receiving charge in the unit time by multiplying the first power receiving amount in the unit time by the unit price of the first AC power in the unit time. Further, the control device 18 calculates the second power receiving charge in the unit time by multiplying the second power receiving amount in the unit time by the unit price of the second AC power in the unit time.

For example, when calculating the first power receiving charge and the second power receiving charge in the 30 minutes from 19:00 to 19:30, the control device 18 is the first in the 30 minutes from 19:00 to 19:30. By multiplying the amount of power received by the unit price of the first AC power for 30 minutes from 19:00 to 19:30, the first power reception charge for 30 minutes from 19:00 to 19:30 is calculated. Further, the control device 18 multiplies the second power received amount in the 30 minutes from 19:00 to 19:30 by the unit price of the second AC power in the 30 minutes from 19:00 to 19:30. The second power receiving charge for 30 minutes from the time to 19:30 is calculated.

Next, the control device 18 calculates the total power receiving charge in the unit time by adding up the power receiving charges in each unit time of the two AC powers (step S12). Specifically, the control device 18 calculates the total power receiving charge in the unit time by adding up the first power receiving charge and the second power receiving charge in the unit time.

For example, when calculating the total power reception charge for 30 minutes from 19:00 to 19:30, add up the first power reception charge and the second power reception charge for the 30 minutes from 19:00 to 19:30. Calculates the total power reception charge for 30 minutes from 19:00 to 19:30.

Next, the control device 18 distributes the total power receiving charge in the unit time according to the ratio of the usage amount of the first to third dwelling units 1 to 3 in the unit time, and divides the first to third dwelling units 1 to 3. The electricity charge for each unit time is calculated (step S13). Specifically, the control device 18 distributes the total power receiving charge in the unit time according to the ratio of the first usage amount, the second usage amount, and the third usage amount in the unit time, thereby, thereby performing the unit time. The first electricity charge, the second electricity charge, and the third electricity charge in the above are calculated. The ratio of the usage amount of the first to third dwelling units 1 to 3 can be expressed by (first usage amount) :( second usage amount) :( third usage amount). The control device 18 calculates the first electricity charge by (total power receiving charge) × (first usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). Further, the control device 18 calculates the second electricity charge by (total power receiving charge) × (second usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). To do. Further, the control device 18 calculates the third electricity charge by (total power receiving charge) × (third usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). To do.

For example, when calculating the first electricity charge, the second electricity charge, and the third electricity charge for 30 minutes from 19:00 to 19:30, the total power reception for 30 minutes from 19:00 to 19:30 30 from 19:00 to 19:30 by allocating the charges according to the ratio of the first usage, the second usage, and the third usage in the 30 minutes from 19:00 to 19:30. Calculate the first electricity rate, the second electricity rate, and the third electricity rate per minute.

By allocating the first electricity charge in the unit time according to the ratio of the received amount of the two AC powers in the unit time, the grid power company 7 of the first electricity charges in the unit time is paid. The charge and the charge to be paid to the first power generation company 8 can be calculated. Of the first electricity charges per unit time, the charges paid to the grid power company 7 are (first electricity charge) x (first electricity received) / ((first electricity received) + (second electricity received)). Can be calculated by. In addition, among the first electricity charges in a unit time, the charges paid to the first power generation company 8 are (first electricity charge) × (second power reception amount) / ((first power reception amount) + (second power reception amount). It can be calculated by (quantity)).

For the second electricity charge and the third electricity charge, the charge to be paid to the grid power company 7 and the charge to be paid to the first power generation company 8 can be calculated by the same method.

If the charge to be paid to the grid power company 7 and the charge to be paid to the first power generation company 8 are calculated for each unit time of the day, the daily charge to be paid to the grid power company 7 and the first power generation The daily charge to be paid to the business operator 8 can be calculated.

As described above, the control device 18 calculates the first electricity charge, the second electricity charge, and the third electricity charge in the unit time by performing the operation shown in FIG. 5 for the unit time in the day. To do. Then, the control device 18 calculates the first electricity charge, the second electricity charge, and the third electricity charge in each unit time by performing the operation shown in FIG. 5 for each unit time in the day. In this way, the control device 18 multiplies the received amount of each of the two AC powers received by the distribution board 12 in each unit time of the day by the unit price of each of the two AC powers. By calculating the power reception charges for each of the two AC powers and adding up the power reception charges for each of the two AC powers, the total power reception charges for the two AC powers are calculated, and the total power reception charges are the first to third. The electricity charges for each of the first to third dwelling units 1 to 3 are calculated by distributing according to the ratio of the usage amount of the dwelling units 1 to 3.

For example, the control device 18 calculates the first electricity charge, the second electricity charge, and the third electricity charge for each 30 minutes from 0:00 to 24:00. In other words, the control device 18 calculates the first electricity charge, the second electricity charge, and the third electricity charge every 30 minutes from 0:00 to 24:00.

Returning to FIG. 4, finally, the control device 18 calculates the daily electricity charge by adding up the electricity charges in each unit time for each of the first to third dwelling units 1 to 3 (step S2). .. Specifically, the control device 18 calculates the first electricity charge for one day by adding up the first electricity charges for each unit time. Further, the control device 18 calculates the second electricity charge for one day by adding up the second electricity charges for each unit time. In addition, the control device 18 calculates the third electricity charge for one day by adding up the third electricity charges for each unit time.

For example, the control device 18 calculates the total amount by adding up the first electricity charges for each 30 minutes from 0:00 to 24:00, and the total amount becomes the first electricity charge for one day. Further, the control device 18 calculates the total amount by adding up the second electricity charges for each 30 minutes from 0:00 to 24:00, and the total amount becomes the second electricity charge for one day. Further, the control device 18 calculates the total amount by adding up the third electricity charges for each 30 minutes from 0:00 to 24:00, and the total amount becomes the third electricity charge for one day.

As described above, the calculation system 10 calculates the daily electricity charges for the first to third dwelling units 1 to 3.

Next, the operation of the control device 18 when calculating the first electricity charge, the second electricity charge, and the third electricity charge in the unit time as described above will be described separately for specific cases. In the following description, an example of the operation when calculating the first electricity charge, the second electricity charge, and the third electricity charge in 30 minutes will be described.

FIG. 6 is a flow chart showing an example of the operation when the control device 18 in the calculation system 10 of FIG. 1 calculates the electricity charge in the daytime unit time. Here, a case where the sun is shining and only the second AC power can be used to cover the AC power supplied to the first to third dwelling units 1 to 3 will be described. That is, a case where the first power receiving amount is 0 [kWh] and the first power receiving charge is 0 [yen] will be described.

First, the control device 18 calculates the second power receiving charge in the 30 minutes by multiplying the second power receiving amount in the 30 minutes by the unit price of the second AC power in the 30 minutes (step S21).

Next, the control device 18 distributes the second power receiving charge in 30 minutes according to the ratio of the usage amount of the first to third dwelling units 1 to 3 in the 30 minutes, and the first to third dwelling units 1 to 3 The electricity charges for each of the 30 minutes are calculated (step S22). Specifically, the control device 18 distributes the second power receiving charge in 30 minutes according to the ratio of the first usage amount, the second usage amount, and the third usage amount in the 30 minutes. Calculate the first electricity charge, the second electricity charge, and the third electricity charge in a minute. The control device 18 calculates the first electricity charge by (second power receiving charge) × (first usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). .. Further, the control device 18 charges the second electricity charge by (second power receiving charge) × (second usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). calculate. Further, the control device 18 charges the third electricity charge by (second power receiving charge) × (third usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). calculate.

FIG. 7 is a flow chart showing an example of the operation when the control device 18 in the calculation system 10 of FIG. 1 calculates the electricity charge in a unit time at night. Here, the case where the sun is not shining and the solar panel 5 cannot generate electricity, and only the first AC power is used to cover the AC power supplied to the first to third dwelling units 1 to 3. explain. That is, a case where the second power receiving amount is 0 [kWh] and the second power receiving charge is 0 [yen] will be described.

First, the control device 18 calculates the first power reception charge in the 30 minutes by multiplying the first power reception amount in the 30 minutes by the unit price of the first AC power in the 30 minutes (step S31).

Next, the control device 18 distributes the first power receiving charge in 30 minutes according to the ratio of the usage amount of the first to third dwelling units 1 to 3 in the 30 minutes, and the first to third dwelling units 1 to 3 The electricity charge for each of the 30 minutes is calculated (step S32). Specifically, the control device 18 distributes the first power receiving charge in 30 minutes according to the ratio of the first usage amount, the second usage amount, and the third usage amount in the 30 minutes. Calculate the first electricity charge, the second electricity charge, and the third electricity charge in a minute. The control device 18 calculates the first electricity charge by (first power receiving charge) × (first usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). .. Further, the control device 18 charges the second electricity charge by (first power receiving charge) × (second usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). calculate. Further, the control device 18 charges the third electricity charge by (first power receiving charge) × (third usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). calculate.

FIG. 8 is a flow chart showing an example of the operation when the control device 18 in the calculation system 10 of FIG. 1 calculates the electricity charge in the unit time in the early morning or the evening. Here, the sun is rising, the sun is setting, or it is cloudy, and the solar panel 5 cannot generate enough power. Only the second AC power is supplied to the first to third dwelling units 1 to 3. The case where the AC power cannot be supplied will be described. That is, a case where the distribution board 12 receives both the first AC power and the second AC power will be described.

First, the control device 18 calculates the first power reception charge in the 30 minutes by multiplying the first power reception amount in the 30 minutes by the unit price of the first AC power in the 30 minutes (step S41).

Next, the control device 18 calculates the second power receiving charge in the 30 minutes by multiplying the second power receiving amount in the 30 minutes by the unit price of the second AC power in the 30 minutes (step S42).

Next, the control device 18 calculates the total power receiving charge in the 30 minutes by adding up the first power receiving charge in the 30 minutes and the second power receiving charge in the 30 minutes (step S43).

Next, the control device 18 distributes the total power receiving charge in 30 minutes according to the ratio of the usage amount of the first to third dwelling units 1 to 3 in the 30 minutes, and divides the first to third dwelling units 1 to 3. The electricity charge for each of the 30 minutes is calculated (step S44). Specifically, the control device 18 distributes the total power receiving charge in 30 minutes according to the ratio of the first usage amount, the second usage amount, and the third usage amount in the 30 minutes, thereby, thereby performing the 30 minutes. The first electricity charge, the second electricity charge, and the third electricity charge in the above are calculated. The control device 18 calculates the first electricity charge by (total power receiving charge) × (first usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). Further, the control device 18 calculates the second electricity charge by (total power receiving charge) × (second usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). To do. Further, the control device 18 calculates the third electricity charge by (total power receiving charge) × (third usage amount) / ((first usage amount) + (second usage amount) + (third usage amount)). To do.

As described above, the control device 18 calculates the first electricity charge, the second electricity charge, and the third electricity charge in each case.

If the distribution board 12 cannot receive the first AC power due to a disaster or the like and receives the second AC power and the third AC power, the unit measured by the second power meter 28. The second power reception charge in the unit time is calculated by multiplying the second power reception amount in the time by the unit price of the second AC power in the unit time. Then, by allocating the second power receiving charge according to the ratio of the first usage amount, the second usage amount, and the third usage amount in the unit time, the first electricity charge and the second electricity in the unit time are distributed. The charge and the third electricity charge can be calculated. If the second power reception amount in the unit time measured by the second power meter 28 cannot be obtained, for example, the total value of the first usage amount, the second usage amount, and the third usage amount in the unit time is used. By subtracting the third power reception amount in the unit time, the second power reception amount in the unit time can be calculated.

Next, the payment methods for the first electricity charge, the second electricity charge, and the third electricity charge will be described.

For example, first, the grid power company 7 pays the first power generation company 8 out of the daily first electricity charges to the first power generation company 8. The grid power operator 7 keeps track of the first power received amount in each unit time measured by the first power meter 26. Therefore, the grid power company 7 multiplies the first power received in each unit time by the unit price of the first AC power in each unit time, so that the grid power company 7 in the first electricity charge per day You can calculate the fee to pay to. The grid power company 7 can calculate the fee to be paid to the first power generation company 8 among the first electricity charges of the day by subtracting the fee to be paid to the grid power company 7 from the first electricity rate of the day. ..

After that, the first dwelling unit 1 pays the first electricity charge for the day to the grid power company 7. By doing so, the first dwelling unit 1 only has to pay the grid power company 7 the first electricity charge for one day, so that the first electricity charge for one day can be easily paid. The same applies to the second dwelling unit 2 and the third dwelling unit 3.

As described above, the calculation system 10 according to the present embodiment receives two AC powers including the AC power from the system power supply 4 and the AC power obtained by converting the DC power from the solar panel 5. Then, one day for each of the distribution board 12 that supplies AC power to the first to third dwelling units 4 to 6 using the two received AC power and the two AC power received by the distribution board 12. For each of the first measuring device 14 that measures the amount of power received in each unit time and the first to third dwelling units 4 to 6, the amount of AC power used in each unit time supplied from the distribution board 12. Based on the amount of power received by the second measuring device 16 and the two AC electric powers, and the amount of electricity used by the first to third dwelling units 4 to 6, the first to third dwelling units 4 to 6 A control device 18 for calculating each daily electricity charge is provided, and the second measuring device 16 is a first to third smart meter 32 provided corresponding to each of the first to third dwelling units 4 to 6. Each of the first to third smart meters 32 to 36 has the AC power supplied from the distribution board 12 for the corresponding dwelling units of the first to third dwelling units 4 to 6. The usage amount in each unit time is measured, and the control device 18 (1) receives two AC powers for each of the two AC powers received by the distribution board 12 in each unit time of the day. By multiplying each unit price of, the power receiving charge of each of the two AC powers is calculated, and by adding up the power receiving charges of each of the two AC powers, the total power receiving charge of the two AC powers is calculated. By distributing the total electricity charge according to the usage ratio of the 1st to 3rd dwelling units 4 to 6, each electricity charge of the 1st to 3rd dwelling units 4 to 6 is calculated, and (2) 1st The daily electricity charge is calculated by adding up the electricity charges for each unit time for each of the third dwelling units 4 to 6.

According to this configuration, the control device 18 multiplies the received amount of each of the two AC powers received by the distribution board 12 at each unit time of the day by the unit price of each of the two AC powers. By doing so, the power receiving charges for each of the two AC powers are calculated, and the total power receiving charges for the two AC powers are calculated by adding up the power receiving charges for each of the two AC powers. The electricity charges for the first to third dwelling units 1 to 3 are calculated by distributing the electricity according to the ratio of the usage amount of the third dwelling units 1 to 3. Further, the control device 18 calculates the daily electricity charge by adding up the electricity charges in each unit time for each of the first to third dwelling units 1 to 3. As a result, even when AC power is supplied to each of the first to third dwelling units 1 to 3 by using two AC powers, the daily electricity charge of each of the first to third dwelling units 1 to 3 can be easily achieved. Can be calculated. Therefore, it is possible to prevent the construction of a disaster prevention-responsive power grid from being hindered. This makes it easier for disaster prevention-responsive power grids constructed using solar panels 5 and the like to become widespread, and promotes the use of renewable energy.

Further, the plurality of consumers are the first to third dwelling units 1 to 3 in the condominium, and the DC power source is the solar panel 5 installed in the condominium.

According to this configuration, the DC power supply is the solar panel 5 installed in the condominium. Therefore, the AC power obtained by converting the DC power from the solar panel 5 can be easily supplied to the first to third dwelling units 1 to 3 in the condominium.

Next, other examples of multiple consumers will be described. FIG. 9 is a block diagram showing another example of a plurality of consumers. As shown in FIG. 9, in this example, the plurality of consumers are a plurality of single-family homes. In addition, in order to avoid complicating the drawings, the illustration of the detached houses other than the first detached house 1a is omitted in FIG.

The calculation system 10a according to this example has a plurality of distribution boards 12 provided corresponding to a plurality of detached houses. In addition, in order to avoid complicating the drawings, in FIG. 9, the illustrations other than the distribution board 12 provided corresponding to the first detached house 1a are omitted.

The plurality of distribution boards 12 receive two AC powers, and use the two received AC powers to supply AC powers to a plurality of detached houses. Specifically, each of the plurality of distribution boards 12 receives two AC powers, the first AC power and the second AC power, and uses the first AC power and the second AC power to make a plurality of detached houses. Supply AC power to the corresponding detached house in the house. The distribution board 12 provided corresponding to the first detached house 1a supplies the AC power to the first detached house 1a by using the first AC power and the second AC power. In this example, the plurality of distribution boards 12 correspond to the relay device.

The point that each of the plurality of distribution boards 12 preferentially receives the second AC power is the same as that of the above-described embodiment. Further, each of the plurality of distribution boards 12 receives the third AC power when the first AC power cannot be received, as in the above-described embodiment. Further, each of the plurality of distribution boards 12 supplies the DC power from the storage battery 6 to the corresponding detached house among the plurality of detached houses, which is the same as the above-described embodiment.

Although the calculation system according to the present invention has been described above based on the embodiment, the present invention is not limited to the embodiment. As long as the gist of the present invention is not deviated, various modifications that can be conceived by those skilled in the art are applied to the embodiment, and other embodiments constructed by combining some components in the embodiment are also included in the scope of the present invention. Is done.

The present invention can be used as a system for calculating electricity charges.

10,10a Calculation system 12 Distribution board 14 1st measuring device 16 2nd measuring device 18 Control device 26 1st wattmeter 28 2nd wattmeter 30 3rd wattmeter 32 1st smart meter 34 2nd smart meter 36 3rd Smart meter

Claims

A plurality of AC powers including AC power from a grid power source and AC power obtained by converting DC power from a DC power source are received, and the received AC powers are used for AC power to a plurality of consumers. And the relay device that supplies
A first measuring device that measures the amount of power received at each unit time of the day for each of the plurality of AC powers received by the relay device.
For each of the plurality of consumers, a second measuring device for measuring the amount of the AC power supplied from the relay device in each unit time, and a second measuring device.
It is provided with a control device that calculates the daily electricity charge of each of the plurality of consumers based on the received amount of each of the plurality of AC powers and the usage amount of each of the plurality of consumers. ,
The second measuring device has a plurality of smart meters provided corresponding to each of the plurality of consumers.
Each of the plurality of smart meters measures the usage amount of the AC power supplied from the relay device in each unit time for the corresponding consumer among the plurality of consumers.
The control device is
(1) In each unit time
By multiplying the received amount of each of the plurality of AC powers received by the relay device by the unit price of each of the plurality of AC powers, the receiving charge of each of the plurality of AC powers is calculated.
By adding up the power receiving charges of each of the plurality of AC powers, the total power receiving charges of the plurality of AC powers is calculated.
By distributing the total electricity receiving charge according to the ratio of the usage amount of the plurality of consumers, the electricity charges of each of the plurality of consumers are calculated.
(2) For each of the plurality of consumers, the daily electricity charge is calculated by adding up the electricity charges in each unit time.
Calculation system.
The plurality of consumers includes a plurality of dwelling units in a condominium.
The DC power source is a solar panel installed in the condominium.
The calculation system according to claim 1.
The relay device preferentially receives AC power obtained by converting DC power from the DC power source.
The calculation system according to claim 1 or 2.
The relay device is
When the AC power supplied to the plurality of consumers can be covered by using only the AC power obtained by converting the DC power from the DC power source, it is obtained by converting the DC power from the DC power source. Receives only AC power, and uses only the AC power to supply AC power to the plurality of consumers.
If the AC power obtained by converting the DC power from the DC power supply cannot cover the AC power supplied to the plurality of consumers, the AC power from the system power supply is further received and the DC power is received. The AC power obtained by converting the DC power from the power source and the AC power from the system power source are used to supply the AC power to the plurality of consumers.
The calculation system according to claim 3.