JP7437673B2 - Evaluation methods, programs, and evaluation systems - Google Patents

Description

The present disclosure generally relates to evaluation methods, programs, and evaluation systems. More specifically, the present disclosure relates to an evaluation method, program, and evaluation system based on equipment information of power supply and demand equipment regarding power supply and demand.

Patent Document 1 describes a power generation amount prediction system that, before installing the solar power generation system, predicts the amount of power generated and sold by the solar power generation system to be installed, taking into account the influence of the surrounding environment of the planned installation site. is disclosed.

Japanese Patent Application Publication No. 2011-229313

In the power generation amount prediction system described in Patent Document 1, even if the user can know the performance of the solar power generation system (power supply and demand equipment) alone, it is difficult to predict the benefits for the user when introducing a new power supply and demand equipment. Otherwise, there was a problem that it was not possible to grasp the disadvantages.

The present disclosure has been made in view of the above points, and aims to provide an evaluation method, program, and evaluation system that makes it easy to understand the benefits or disadvantages for users when new power supply and demand equipment is introduced. do.

An evaluation method according to one aspect of the present disclosure includes an input reception step, a simulation step, an evaluation step, and an output step. The input receiving step is a step of receiving input of equipment information of a plurality of power supply and demand facilities regarding the supply and demand of electric power introduced into the facility. The simulation step is a step of simulating the operation of the plurality of power supply and demand facilities based on the facility information received in the input receiving step. The evaluation step is a step of evaluating the result of the simulation step. The output step is a step of outputting the evaluation in the evaluation step. The evaluation step includes determining an electric power self-sufficiency rate representing a ratio of in-house consumption by the plurality of power supply and demand facilities to the amount of electricity consumed at the facility, and an electric power self-sufficiency rate representing a ratio of the self-consumption of the plurality of power supply and demand facilities to the amount of electricity consumed at the facility, and an electric power generation amount of the plurality of power supply and demand facilities to the amount of electricity generated by the plurality of power supply and demand facilities. If at least one of the self-consumption rate representing the proportion of self - consumption at

A program according to one aspect of the present disclosure causes one or more processors to execute the above evaluation method.

An evaluation system according to one aspect of the present disclosure includes an input reception section, a simulation section, an evaluation section, and an output section. The input receiving unit receives input of equipment information of a plurality of power supply and demand equipment related to the supply and demand of electric power introduced into the facility. The simulation unit simulates the operation of the plurality of power supply and demand equipment based on the equipment information received by the input reception unit. The evaluation section evaluates the results of the simulation section. The output unit outputs the evaluation by the evaluation unit. The evaluation unit calculates an electric power self-sufficiency rate representing a ratio of in-house consumption by the plurality of power supply and demand equipments to the amount of electricity consumed in the facility, and an electric power self-sufficiency rate representing a ratio of in-house consumption by the plurality of power supply and demand equipments to the amount of electricity consumed at the facility, and an electric power generation amount by the plurality of power supply and demand equipments to the amount of electricity generated by the plurality of power supply and demand equipments. If at least one of the self-consumption rate representing the proportion of self-consumption amount exceeds the corresponding threshold value, the evaluation is determined to be an error .

The present disclosure has the advantage that it is easy to understand the benefits or disadvantages for users when new power supply and demand equipment is introduced.

FIG. 1 is a flowchart showing the operation of an evaluation system according to an embodiment of the present disclosure. FIG. 2 is a block diagram showing an overview of the above evaluation system. FIG. 3 is an explanatory diagram of an example of the supply and demand of electric power in a facility. FIG. 4 is an explanatory diagram of an example of the power self-sufficiency rate before and after the introduction of a storage battery in the above evaluation system. FIG. 5 is an explanatory diagram of an example of the power self-sufficiency rate before and after the introduction of a storage battery in the above evaluation system. FIG. 6 is an explanatory diagram of an example of monthly income and expenditure before and after the introduction of a storage battery in the evaluation system described above. FIG. 7 is an explanatory diagram of an example of an error in the power self-sufficiency rate after the introduction of a storage battery in the above evaluation system. FIG. 8 is an explanatory diagram of an example of an error in the self-consumption rate after the introduction of a storage battery in the above evaluation system.

(1) Overview The evaluation method according to the present embodiment is a method for simulating the operation of a plurality of power supply and demand facilities and evaluating the simulation results. The evaluation method of this embodiment is used, for example, when a plurality of power supply and demand facilities are introduced into a facility such as a single-family house or an apartment complex. In this embodiment, it is assumed that the evaluation method is used when a plurality of power supply and demand facilities are introduced into a detached house.

The “power supply and demand equipment” in the present disclosure is equipment related to the supply and demand of electric power introduced into a facility. The power supply and demand equipment may include power generation equipment, such as a solar power generation system, for example. In addition, power supply and demand equipment temporarily stores electricity generated by power generation equipment, such as storage batteries or batteries for electric vehicles compatible with V2H (Vehicle To Home), and uses the stored electricity. May include equipment. Furthermore, power supply and demand equipment, such as electric water heaters that use heat pump technology such as EcoCute (registered trademark), has a time period in which the electricity generated by the power generation equipment is used and a time period during which the functionality of the equipment is demonstrated. It may include equipment that can be offset relative to each other. Specifically, electric water heaters boil water by using electricity generated by power generation equipment. The function of the electric water heater is achieved when the user uses the boiled water after the time the water is boiled.

As shown in FIG. 1, the evaluation method of this embodiment includes an input reception step ST1, a simulation step ST2, an evaluation step ST3, and an output step ST4.

The input reception step ST1 is a step for receiving input of equipment information of a plurality of power supply and demand facilities. "Equipment information" as used in this disclosure includes information representing the performance of power supply and demand equipment (for example, installed capacity in the case of a solar power generation system, storage battery capacity in the case of a storage battery, etc.), as well as information representing the performance of the power supply and demand equipment. It may contain accompanying information for the user to consider. For example, the accompanying information may include the electricity rate currently paid to the power company by the user considering the introduction of the power supply and demand equipment, the electricity rate plan contracted with the power company, or the cost of installing the power supply and demand equipment. may include. In addition, the accompanying information may include a FIT (Feed-in Tariff) unit price when a solar power generation system is included in the power supply and demand equipment. The input in the input reception step ST1 may be performed by the user himself or by a vendor who sells power supply and demand equipment to the user.

The simulation step ST2 is a step of simulating the operation of a plurality of power supply and demand facilities based on the facility information received in the input reception step ST1. As an example, in the simulation step ST2, when the power supply and demand equipment includes a solar power generation system, the annual power generation amount by the solar power generation system is estimated. Further, as an example, in the simulation step ST2, if a storage battery is included in the power supply and demand equipment, the annual amount of charge and discharge by the storage battery is estimated.

Evaluation step ST3 is a step of evaluating the result of simulation step ST2. As an example, when a new power supply and demand facility is planned to be introduced, the evaluation step ST3 calculates the power self-sufficiency rate (described later) before and after the introduction. Furthermore, as an example, when a new power supply and demand facility is planned to be introduced, the evaluation step ST3 calculates the self-consumption rate (described later) before and after the introduction.

The output step ST4 is a step of outputting the evaluation in the evaluation step ST3. In the present embodiment, the output step ST4 presents the evaluation in the evaluation step ST3 to the user by displaying the evaluation in the evaluation step ST3 on the display device 4 (see FIG. 4).

As described above, in this embodiment, when a user plans to introduce a new power supply and demand facility, the operation of multiple power supply and demand facilities including the new power supply and demand facility is simulated, and the results of the simulation are Ratings can be presented to the user. Therefore, the user can use the evaluation of the simulation results as a basis for determining what kind of power supply and demand equipment should be introduced. In other words, this embodiment has the advantage that it is easy to understand the benefits or disadvantages for the user when a new power supply and demand facility is introduced.

(2) Details Hereinafter, the evaluation system 100 for implementing the evaluation method of this embodiment will be described in detail with reference to FIG. 2. As shown in FIG. 2, the evaluation system 100 includes an input receiving section 1, a processing section 2, and an output section 3. Furthermore, the processing section 2 includes a simulation section 21 and an evaluation section 22.

In this embodiment, the processing unit 2 mainly includes a computer system having one or more processors and memory. Therefore, one or more processors function as the simulation unit 21 and the evaluation unit 22 of the processing unit 2 by executing programs recorded in the memory. The program may be pre-recorded in a memory, provided through a telecommunications line such as the Internet, or provided recorded on a non-temporary recording medium such as a memory card.

(2.1) Input Reception Unit The input reception unit 1 accepts input of equipment information of a plurality of power supply and demand facilities. The input reception unit 1 is the main body that executes the input reception step ST1. The input is performed using, for example, a personal computer (including a laptop type) or a mobile terminal such as a smartphone or a tablet terminal. In this embodiment, a user or the like inputs equipment information by using an input device such as a mouse and a keyboard while looking at an input screen displayed on a display. The input screen is a screen displayed on a display by executing dedicated software on a personal computer.

Here, if there is power supply and demand equipment that the user has already installed, the input reception unit 1 will receive input of equipment information and the like as shown in Table 1 below. In Table 1, white columns represent locations where the user etc. should input. Note that in Table 1, it is assumed that the user or the like has already completed the input. Furthermore, if the user is considering replacing the power conditioner, the user may further input the equipment cost and construction cost of the newly installed power conditioner.

"Utility cost information" and "electricity rate unit price" in Table 1 correspond to accompanying information. Moreover, "solar power generation information" and "FIT unit price" in Table 1 correspond to equipment information of the power supply and demand equipment (here, the solar power generation system) that the user has already installed. Further, "information about equipment to be considered for installation" in Table 1 corresponds to equipment information about power supply and demand equipment (herein, a storage battery) that the user is planning to newly install. In addition, the "FIT current unit price" in Table 1 represents the purchase price during the fixed purchase period based on the fixed purchase system, and the "post-FIT unit price" represents the purchase price after the end of the fixed purchase period, that is, after the FIT. It represents the unit price.

Furthermore, if there is no power supply and demand equipment that the user has already installed, the input reception unit 1 will accept input of equipment information and the like as shown in Table 2 below. In Table 2, white columns represent locations where the user etc. should input. Note that Table 2 assumes that the user has already completed the input.

"Lifestyle" in Table 2 corresponds to additional information regarding users who use multiple power supply and demand facilities. That is, the input reception unit 1 (input reception step ST1) further receives input of additional information. The additional information includes information regarding the user's lifestyle. Here, the additional information may include the user's family structure, the number of family members who are at home during the day, and the like. Further, the additional information may include the user's lifestyle (for example, whether the husband and wife both work or not). In this embodiment, as described above, when there is no power supply and demand equipment that the user has already installed, input of additional information is accepted.

"Electricity storage system information", "solar power generation information", and "FIT unit price" in Table 2 are the equipment of the power supply and demand equipment (here, the solar power generation system and storage battery) that the user plans to newly install. Corresponds to information. Furthermore, the "unit price of electricity" in Table 2 corresponds to accompanying information.

As described above, the input reception unit 1 determines whether at least one of the plurality of power supply and demand facilities is equipment that the user has already installed, and whether all of the plurality of power supply and demand facilities are newly installed by the user. Different inputs are accepted depending on whether it is a planned facility or not. The simulation unit 21, which will be described later, is configured to simulate cases where at least one of the plurality of power supply and demand facilities is already installed by the user, and cases where the plurality of power supply and demand facilities are both facilities that the user plans to newly introduce. Run different simulations for each case.

(2.2) Simulation Unit The simulation unit 21 simulates the operation of a plurality of power supply and demand facilities based on the equipment information received by the input reception unit 1. The simulation unit 21 is the main entity that executes the simulation step ST2. Hereinafter, specific examples of simulation of the operation of a plurality of power supply and demand facilities by the simulation unit 21 will be listed.

(2.2.1) When there is power supply and demand equipment that the user has already installed If a solar power generation system is included in the plurality of power supply and demand equipment, the simulation unit 21 uses the input reception unit 1 to generate solar power Once input of the installed capacity of the system and the region where the solar power generation system will be installed is received, the estimated annual power generation amount is calculated using a predetermined calculation formula.

In addition, when a storage battery is included in a plurality of power supply and demand facilities, when the input reception unit 1 receives an input of the storage battery capacity of the storage battery, the simulation unit 21 integrates the storage battery capacity with the number of charging and discharging times of the storage battery. Calculate the annual charge and discharge amount. The number of times the storage battery is charged and discharged depends on the total number of days in a year (for example, 365 days) and the estimated total number of days when the solar power generation system cannot generate a certain amount of electricity (for example, on cloudy or rainy days). It is pre-configured based on The term "certain amount of power" used herein refers to the amount of surplus power needed to fully charge the storage battery. The surplus power amount corresponds to the power amount obtained by subtracting the self-consumption amount from the power generation amount of the solar power generation system.

Furthermore, when the input receiving unit 1 receives input of electricity sales income (including monthly average value) and electricity sales unit price (FIT unit price), the simulation unit 21 divides the annual electricity sales income by the electricity sales unit price. By doing so, the amount of electricity sold is calculated. Then, the simulation unit 21 calculates the self-consumption amount by dividing the amount of sold electricity from the estimated annual amount of power generation.

"In-house consumption" here refers to the amount of electricity consumed at the facility out of the amount of electricity generated by the solar power generation system. When a solar power generation system is included in a plurality of power supply and demand facilities and a storage battery is not included, the self-consumption amount corresponds to the amount of power consumed at the facility. On the other hand, if multiple power supply and demand facilities include a solar power generation system and a storage battery, the self-consumption amount is the amount of electricity consumed by the facility plus the amount charged to the storage battery. This corresponds to the amount of power added to the amount of power discharged later (that is, the amount of charge and discharge).

That is, of the electricity generated by the solar power generation system, the electricity charged in the storage battery is consumed at the facility during times when the solar power generation system cannot generate electricity (for example, at night). In other words, the electricity discharged from the storage battery is essentially electricity generated by the solar power generation system. Therefore, the amount of charging and discharging of storage batteries is included in the amount of self-consumption.

FIG. 3 shows an example of the supply and demand of electricity at a facility that has introduced a solar power generation system. In FIG. 3, a line L1 represents a change in power consumed by the facility, and a line L2 represents a change in power generated by the solar power generation system. In FIG. 3, area A3 corresponds to the amount of electricity generated by the solar power generation system, and area A1 corresponds to the amount of electricity sold. In FIG. 3, area A2 corresponds to the self-consumption amount during the time period when the solar power generation system can generate electricity.

Furthermore, when the input reception unit 1 receives input of the electricity bill currently paid by the user and the unit price of electricity based on the electricity rate plan that the user currently subscribes to, the simulation unit 21 converts the electricity bill into the unit price of electricity. Calculate electricity consumption by dividing by Then, the simulation unit 21 calculates the actual electricity consumption by adding the self-consumption to the calculated electricity consumption. The "substantive amount of electricity consumed" here corresponds to the amount of electricity consumed at the facility, assuming that the user has not introduced an electric power supply and demand facility.

Table 3 shown below is an example of simulation results by the simulator 21. In Table 3, "Estimated power generation status (before introduction)" represents the current estimated annual power generation amount, in-house consumption amount, and electricity sales amount. The "in-house consumption" here does not include the annual charge and discharge amount of storage batteries, since storage batteries are not included in the multiple power supply and demand facilities. In addition, in Table 3, "estimated power generation status (after introduction)" is the estimated annual power generation amount, in-house consumption, and annual charge of storage batteries assuming that new power supply and demand equipment (here, storage batteries) is introduced. It represents the amount of discharge and the amount of electricity sold. "In-house consumption" here includes the annual amount of charging and discharging of storage batteries.

(2.2.2) When there is no power supply and demand equipment that the user has already installed If a solar power generation system is included in the plurality of power supply and demand equipment, the simulation unit 21 uses the input reception unit 1 as described above. When the installed capacity of the solar power generation system and the area where the solar power generation system is installed are received, the estimated annual power generation amount is calculated using a predetermined calculation formula.

In addition, when a storage battery is included in a plurality of power supply and demand facilities, when the input reception unit 1 receives an input of the storage battery capacity of the storage battery in the same way as described above, the simulation unit 21 integrates the storage battery capacity into the number of charging and discharging times of the storage battery. By doing this, the annual charge and discharge amount of the storage battery is calculated.

In addition, when the input reception unit 1 receives the input of the user's family composition, the simulation unit 21 calculates the actual electricity consumption based on the data stored in advance in the memory as shown in Table 4 below. seek. Table 4 represents an example of data showing the correlation between a user's family structure and estimated monthly and annual substantial electricity consumption. Note that Table 4 represents an example of data when gas is used in addition to electricity. For example, if the user's family consists of three people, the simulation unit 21 calculates the monthly substantial electricity consumption to be 390 kWh and the annual substantial electricity consumption to be 4680 kWh.

In addition, the simulation unit 21 integrates the obtained actual electricity consumption with the ratio of daytime electricity consumption based on data as shown in Table 5 below, which is stored in advance in the memory. Calculate home consumption. The self-consumption amount calculated here is the self-consumption amount when a storage battery is not included in the plurality of power supply and demand facilities. Therefore, when a solar power generation system and a storage battery are included in a plurality of power supply and demand facilities, the self-consumption amount is a value obtained by adding the amount of charging and discharging of the storage battery. Table 5 represents an example of data showing the correlation between the user's lifestyle, daytime stay rate, and daytime electricity consumption rate. For example, when the "life style" is "both husband and wife work", the simulation unit 21 calculates 20% of the electricity consumption as the home consumption. Then, the simulation unit 21 calculates the amount of sold electricity by subtracting the amount of self-consumption from the calculated annual estimated amount of power generation.

Table 6 shown below is an example of simulation results by the simulator 21. In Table 6, "estimated power generation status" refers to the estimated annual power generation amount, in-house consumption (solar power), storage battery, and represents the annual charge/discharge amount and electricity sales amount. "In-house consumption (solar light)" here does not include the annual charge and discharge amount of storage batteries. Therefore, the actual self-consumption amount is the sum of the self-consumption amount (solar light) and the annual charge/discharge amount of the storage battery.

As described above, when the input of additional information is accepted, the simulation unit 21 (simulation step ST2) simulates the operation of the plurality of power supply and demand facilities based on the additional information.

(2.3) Evaluation unit The evaluation unit 22 evaluates the results of the simulation unit 21. The evaluation unit 22 is the main body that executes the evaluation step ST3. Specifically, the evaluation unit 22 calculates the power self-sufficiency rate, self-consumption rate, etc. based on the various data received by the input reception unit 1 and the various data obtained by the simulation unit 21. That is, in this embodiment, the evaluation includes information regarding the power self-sufficiency rate. Furthermore, in this embodiment, the evaluation includes information regarding the self-consumption rate. The "power self-sufficiency rate" in this disclosure refers to the ratio of self-consumption by multiple power supply and demand facilities to the power consumption at a facility. By referring to the power self-sufficiency rate, the user can grasp how much of the electricity consumed in the facility is covered by the plurality of power supply and demand facilities. Moreover, the "self-consumption rate" as used in the present disclosure refers to the ratio of the self-consumption amount by the plurality of power supply and demand facilities to the amount of power generation by the plurality of power supply and demand facilities. By referring to the self-consumption rate, the user can grasp how much of the electricity generated by the solar power generation system is being utilized at the facility.

(2.3.1) When there is power supply and demand equipment that the user has already installed The evaluation unit 22 calculates the current power self-sufficiency rate and self-consumption rate. The electricity self-sufficiency rate is calculated by dividing the current self-consumption amount by the actual electricity consumption amount and adding 100. The self-consumption rate is calculated by dividing the current self-consumption amount by the estimated annual power generation amount and adding 100. In this embodiment, both the power self-sufficiency rate and the self-consumption rate are calculated as percentages.

Furthermore, the evaluation unit 22 calculates the electricity sales income, the electricity self-sufficiency rate, and the self-consumption rate after the introduction of a new electricity supply and demand facility (here, a storage battery). The electricity sales income is calculated by subtracting the electricity sales income corresponding to the amount of charging and discharging of the storage battery from the current electricity sales income. The power self-sufficiency rate is calculated by dividing the self-consumption amount after introduction (including the annual charge/discharge amount of the storage battery) by the actual electricity consumption amount, and adding 100. The self-consumption rate is calculated by dividing the self-consumption amount after introduction by the estimated annual power generation amount and adding 100.

Then, the evaluation unit 22 calculates the amount of reduction in electricity bill after introduction based on the actual electricity consumption amount and the private consumption amount. In other words, the evaluation unit 22 calculates how much the electricity bill will be reduced by introducing the new power supply and demand equipment.

(2.3.2) When there is no power supply and demand equipment that the user has already installed The evaluation unit 22 evaluates the power sales revenue after the introduction of new power supply and demand equipment (here, a solar power generation system and storage battery), Calculate the electricity self-sufficiency rate and self-consumption rate. The power sales revenue is calculated by dividing the calculated power sales amount by the power sales unit price (FIT unit price). The power supply and demand ratio is calculated by dividing the self-consumption amount after introduction (including the annual charge/discharge amount of the storage battery) by the actual amount of electricity consumption, and adding up 100. The self-consumption rate is calculated by dividing the self-consumption amount after introduction by the estimated annual power generation amount and adding 100.

Then, the evaluation unit 22 calculates the amount of reduction in electricity bill after introduction based on the actual electricity consumption amount and the private consumption amount.

(2.4) Output unit The output unit 3 outputs the evaluation by the evaluation unit 22. The output unit 3 is the main entity that executes the output step ST4. An example of the evaluation output by the output unit 3 will be described below with reference to FIGS. 4 to 8. The output unit 3 causes the display device 4 to display the evaluation by the evaluation unit 22 as an evaluation screen 40, as shown in FIGS. 4 to 8. Note that each numerical value in FIGS. 4 to 8 is a value rounded to the nearest whole number.

In the example shown in FIG. 4, the output unit 3 causes the display device 4 to display an evaluation screen 40 regarding the power self-sufficiency rate. FIG. 4 shows an evaluation screen 40 when there is an electric power supply and demand facility (in this case, a solar power generation system) that the user has already installed. In the evaluation screen 40, a pie chart representing the current power self-sufficiency rate is drawn in the left area. Here, the current power self-sufficiency rate is 12%, and the power self-sufficiency rate corresponding to the solar power generation system is also 12%. Further, in the evaluation screen 40, a pie chart representing the power self-sufficiency rate after the introduction of a new power supply and demand facility (here, a storage battery with a storage battery capacity of 9.1 kWh) is drawn in the right area. Here, the power self-sufficiency rate after introduction is 52%, the power self-sufficiency rate corresponding to the solar power generation system is 12%, and the power self-sufficiency rate corresponding to the storage battery is 39%. Therefore, by viewing this evaluation screen 40, the user can understand that the power self-sufficiency rate can be significantly improved by introducing the storage battery.

In the example shown in FIG. 5, the output unit 3 causes the display device 4 to display an evaluation screen 40 regarding the self-consumption rate. FIG. 5 shows an evaluation screen 40 when there is an electric power supply and demand facility (in this case, a solar power generation system) that the user has already installed. In the evaluation screen 40, a band graph representing the current self-consumption rate is drawn in the left area. Here, the current self-consumption rate is 14%, and the ratio of the amount of electricity sold to the amount of generated electricity is 86%. Further, in the evaluation screen 40, a band graph representing the self-consumption rate after the introduction of a new power supply and demand facility (here, a storage battery with a storage battery capacity of 9.1 kWh) is drawn in the right area. Here, the self-consumption rate after introduction is 60%, and the ratio of the amount of electricity sold to the amount of generated electricity is 40%. Therefore, by viewing this evaluation screen 40, the user can understand that the self-consumption rate can be significantly improved by introducing the storage battery.

In the example shown in FIG. 6, the output unit 3 causes the display device 4 to display an evaluation screen 40 regarding monthly income and expenditure. FIG. 6 shows an evaluation screen 40 when there is an electric power supply and demand facility (in this case, a solar power generation system) that the user has already installed. On the evaluation screen 40, a bar graph representing the monthly income and expenditure at the present time, after the FIT, and after the introduction of new power supply and demand equipment (here, a storage battery with a storage battery capacity of 9.1 kWh) is drawn. In FIG. 6, positive values represent expenditures and negative values represent income. Here, with the introduction of new power supply and demand equipment, electricity charges have been reduced from 10,000 yen to 5,520 yen, and electricity sales income has decreased from 18,000 yen (3,000 yen after graduation FIT) to 5,520 yen. This shows that the amount has been reduced to 1,404 yen. Therefore, by looking at the evaluation screen 40, the user can understand that while the electricity sales income will decrease, the electricity bill will be significantly reduced, and the monthly income and expenditure will be improved overall.

Note that in this embodiment, the output unit 3 displays the evaluation screens 40 shown in FIGS. 4 to 6 all at once on the display device 4 as one screen. That is, the output unit 3 (output step ST4) causes the display device 4 to display both information regarding the power self-sufficiency rate and information regarding the self-consumption rate at once. Of course, the output unit 3 may display each of the evaluation screens 40 shown in FIGS. 4 to 6 one screen at a time on the display device 4.

In the example shown in FIG. 7, the output unit 3 causes the display device 4 to display an evaluation screen 40 regarding errors in the power self-sufficiency rate. The evaluation screen 40 depicts the power self-sufficiency rate, self-consumption rate, and monthly income and expenditure after the introduction of new power supply and demand equipment (here, two storage batteries, "storage battery 1" and "storage battery 2"). There is.

Here, in the example shown in FIG. 7, in the pie chart representing the power self-sufficiency rate, the power self-sufficiency rate is 118%, which exceeds 100%. Note that in this pie chart, "storage battery 2" is not drawn because it cannot be represented in a pie chart. In the example shown in FIG. 7, an error message is drawn in the area representing monthly income and expenditure. In other words, if the electricity self-sufficiency rate exceeds 100%, the capacity of the storage battery is too large for the electricity consumption of the facility (in other words, even if the electricity consumption of the facility is covered entirely by the charging power of the storage battery, the capacity of the storage battery is too large for the electricity consumption of the facility) This indicates that more charging power than necessary remains. Therefore, the evaluation unit 22 evaluates that the introduction of storage batteries is excessive. Then, the output unit 3 outputs an error message according to the evaluation by the evaluation unit 22.

In the example shown in FIG. 8, the output unit 3 causes the display device 4 to display an evaluation screen 40 regarding errors in the self-consumption rate. The evaluation screen 40 depicts the self-consumption rate and monthly income and expenditure after the introduction of new power supply and demand equipment (here, two storage batteries, "storage battery 1" and "storage battery 2").

Here, in the example shown in FIG. 8, in the band graph representing the self-consumption rate, the self-consumption rate is 129%, which exceeds 100%. In the example shown in FIG. 8, an error message is drawn in the area representing monthly income and expenditure. In other words, if the self-consumption rate exceeds 100%, the capacity of the storage battery is too large for the amount of power generated by the solar power generation system (in other words, even if all the generated power during the day is used to charge the storage battery, the storage battery will not be full). This indicates that the battery is not charging. Therefore, the evaluation unit 22 evaluates that the introduction of storage batteries is excessive. Then, the output unit 3 outputs an error message according to the evaluation by the evaluation unit 22.

As described above, in the present embodiment, the evaluation unit 22 (evaluation step ST3) performs evaluation when at least one of the power self-sufficiency rate and the self-consumption rate exceeds the corresponding threshold (here, 100%). It is treated as an error.

Further, the output unit 3 may further display information as shown in Tables 7 and 8 below on the evaluation screen 40 as additional information regarding the monthly income and expenditure.

Table 7 shows the introduction of new power supply and demand equipment (here, a storage battery) before and after the FIT in cases where there is power supply and demand equipment (here, a solar power generation system) that the user has already introduced. It shows an example of the amount of electricity sales income and electricity bill reduction in each of the following cases.

Table 8 shows the amount of power sales revenue and reduction in electricity bill after the introduction of new power supply and demand equipment (in this case, solar power generation system and storage battery) in the case that the power supply and demand equipment that the user has already installed does not exist. represents an example.

(3) Operation Hereinafter, an example of the operation of the evaluation system 100 of this embodiment will be described using FIG. 1. First, the input receiving unit 1 receives input of equipment information from a user or the like (S1). Here, if there is power supply and demand equipment that the user has already introduced (S2: Yes), the input reception unit 1 receives the equipment information of the power supply and demand equipment that has already been introduced and the power supply and demand equipment that is to be newly introduced. Accepts equipment information and input. On the other hand, if there is no power supply and demand equipment that the user has already introduced (S2: No), the input reception unit 1 accepts input of equipment information of a plurality of power supply and demand equipment that are scheduled to be newly introduced. Then, the input receiving unit 1 further receives input of additional information (S3). Processes S1 to S3 correspond to input reception step ST1.

Next, the simulation unit 21 simulates the operation of the plurality of power supply and demand facilities based on the equipment information (including additional information) input by the input reception unit 1 (S4). Processing S4 corresponds to simulation step ST2. Specifically, the simulation unit 21 calculates the estimated annual power generation amount, actual electricity consumption, private consumption, and sales based on the equipment information (including additional information) received by the input reception unit 1. Calculate the amount of electricity, etc.

Next, the evaluation section 22 evaluates the results of the simulation section 21 (S5). Processing S5 corresponds to evaluation step ST3. Specifically, the evaluation unit 22 calculates electricity sales revenue, electricity self-sufficiency rate, and Calculate the self-consumption rate, etc.

Finally, the output unit 3 outputs the evaluation by the evaluation unit 22 (S6). Processing S6 corresponds to output step ST4. Specifically, the output unit 3 causes the display device 4 to display an evaluation screen 40 including the power self-sufficiency rate, self-consumption rate, and monthly income and expenditure based on the various information obtained by the evaluation unit 22.

Hereinafter, the advantages of the evaluation system 100 (evaluation method) of this embodiment will be explained by comparing it with an evaluation system of a comparative example. The evaluation system of the comparative example simulates the operation of a new power supply and demand facility that the user plans to introduce, but differs from the evaluation system of the present embodiment in that it does not output an evaluation of the simulation results.

In the evaluation system of the comparative example, the user can evaluate the performance of the power supply and demand equipment that the user plans to newly install (for example, the estimated annual power generation amount for a solar power generation system, the annual charge/discharge amount for a storage battery, etc.). It is possible to understand. However, in the evaluation system of the comparative example, the user can grasp what kind of benefits he or she may enjoy or what kind of disadvantages he or she may suffer by introducing new power supply and demand equipment. It's difficult. For example, even if a user has decided on the type of power supply and demand equipment that they plan to install, if a wide variety of power supply and demand equipment is available, the user can decide which power supply and demand equipment to install. There is a possibility that it cannot be done. As a specific example, if the power supply and demand equipment that the user plans to install is a storage battery, the user may not be able to determine which capacity storage battery should be installed.

Therefore, in this embodiment, the operation of a plurality of power supply and demand facilities including a newly planned power supply and demand facility is simulated, and an evaluation of the simulation results is output. Therefore, the user can use the evaluation of the simulation results as a basis for determining what kind of power supply and demand equipment should be introduced. For example, by looking at the monthly income and expenditure before and after the introduction of the new power supply and demand equipment, the user can easily understand the impact that the introduction of the new power supply and demand equipment has on the electricity bill. Further, for example, by looking at the power self-sufficiency rate and self-consumption rate before and after the introduction of the new power supply and demand equipment, the user can easily understand the impact that the introduction of the new power supply and demand equipment has on the power supply and demand balance. In other words, this embodiment has the advantage that it is easy to understand the benefits or disadvantages for the user when a new power supply and demand facility is introduced.

(4) Modifications The embodiment described above is just one of various embodiments of the present disclosure. The embodiments described above can be modified in various ways depending on the design, etc., as long as the objective of the present disclosure can be achieved. In addition to the evaluation method, functions similar to those of the evaluation system 100 may be realized by a (computer) program, a non-temporary recording medium on which the program is recorded, or the like. A (computer) program according to one embodiment causes one or more processors to execute the above evaluation method.

Modifications of the above embodiment will be listed below. The modified examples described below can be applied in combination as appropriate.

The evaluation system 100 according to the present disclosure includes, for example, a computer system in the processing unit 2 and the like. A computer system mainly consists of a processor and a memory as hardware. The function of the evaluation system 100 in the present disclosure is realized by a processor executing a program recorded in the memory of the computer system. The program may be pre-recorded in the memory of the computer system, may be provided through a telecommunications line, or may be recorded on a non-transitory storage medium readable by the computer system, such as a memory card, optical disc, hard disk drive, etc. may be provided. A processor in a computer system is comprised of one or more electronic circuits including semiconductor integrated circuits (ICs) or large scale integrated circuits (LSIs). The integrated circuits such as IC or LSI referred to herein have different names depending on the degree of integration, and include integrated circuits called system LSI, VLSI (Very Large Scale Integration), or ULSI (Ultra Large Scale Integration). Furthermore, an FPGA (Field-Programmable Gate Array), which is programmed after the LSI is manufactured, or a logic device that can reconfigure the connections inside the LSI or reconfigure the circuit sections inside the LSI, may also be used as a processor. Can be done. The plurality of electronic circuits may be integrated into one chip, or may be provided in a distributed manner over a plurality of chips. A plurality of chips may be integrated into one device, or may be distributed and provided in a plurality of devices. The computer system herein includes a microcontroller having one or more processors and one or more memories. Therefore, the microcontroller is also composed of one or more electronic circuits including semiconductor integrated circuits or large-scale integrated circuits.

Furthermore, it is not an essential configuration for the evaluation system 100 that a plurality of functions in the evaluation system 100 are integrated into one housing, and the constituent elements of the evaluation system 100 are distributed and provided in a plurality of housings. You can leave it there. Furthermore, at least some of the functions of the evaluation system 100 may be realized by a cloud (cloud computing) or the like.

In the embodiment described above, the evaluation by the evaluation unit 22 (evaluation step ST3) may include recommendation information regarding the power supply and demand equipment recommended to users who use a plurality of power supply and demand equipment. Here, the user selects the power supply and demand equipment based on stability such as being able to use electricity even during a power outage, economic efficiency such as reducing electricity bills (fixed costs), or environmental consciousness such as wanting to use clean energy. The points that are emphasized differ from user to user. Therefore, the evaluation system 100 (evaluation method) presents the power supply and demand equipment that the user should install as recommended information to the user according to the user's preferences (the above-mentioned stability, economic efficiency, environmental orientation, etc.). Good too. For example, if the user desires environmental consciousness, the display device 4 may display a message recommending a storage battery with a capacity that provides a relatively high power self-sufficiency rate. Further, for example, a message recommending a storage battery whose price matches the user's budget may be displayed on the display device 4.

In the embodiment described above, the output unit 3 does not display the power self-sufficiency rate and the self-consumption rate on the display device 4 as they are, but displays indirect information based on the power self-sufficiency rate and the self-consumption rate on the display device 4. You can.

In the embodiments described above, the additional information may include information on whether the user is a day person or a night person.

In the embodiment described above, the data (see Tables 4 and 5) that the simulator 21 refers to when calculating the actual electricity consumption and private consumption may be updated as the data accumulates. Further, this data is not limited to the items listed in Tables 4 and 5, and may be further subdivided.

In the embodiment described above, input of additional information is accepted when there is no power supply and demand equipment that the user has already installed, but additional information is also input when there is power supply and demand equipment that the user has already installed. It may also accept input. This aspect has the advantage that it becomes easier to present benefits or disadvantages for the user in more detail based on the additional information, regardless of whether or not the user has already installed power supply and demand equipment.

In the above-described embodiment, if a system for monitoring the power generation amount of the solar power generation system is installed in the facility, the user may input the power generation amount presented by this system. In this case, the simulation unit 21 does not need to calculate the amount of power generation.

In the embodiments described above, the power supply and demand equipment may include, for example, a power generation device such as a fuel cell. Further, the power supply and demand equipment may include a power generation device that uses renewable energy other than sunlight, such as wind power, hydropower, geothermal power, and biomass.

In the above-described embodiment, the evaluation system 100 is not limited to being used when introducing a plurality of power supply and demand facilities into a residential facility, but also when introducing a plurality of power supply and demand facilities into a non-residential facility such as an office building, a hospital, a commercial facility, and a school. It may also be used when introducing power supply and demand equipment.

(summary)
As described above, the evaluation method according to the first aspect includes an input reception step (ST1), a simulation step (ST2), an evaluation step (ST3), and an output step (ST4). The input receiving step (ST1) is a step of receiving input of equipment information of a plurality of power supply and demand facilities related to the supply and demand of electric power introduced into the facility. The simulation step (ST2) is a step of simulating the operation of a plurality of power supply and demand facilities based on the facility information received in the input receiving step (ST1). The evaluation step (ST3) is a step of evaluating the result of the simulation step (ST2). The output step (ST4) is a step of outputting the evaluation in the evaluation step (ST3).

According to this aspect, there is an advantage that it is easy to understand the benefits or disadvantages for the user when a new power supply and demand facility is introduced.

In the evaluation method according to the second aspect, in the first aspect, the input accepting step (ST1) further accepts an input of additional information regarding a user who uses a plurality of power supply and demand facilities. The simulation step (ST2) simulates the operation of a plurality of power supply and demand facilities based on the additional information.

According to this aspect, there is an advantage that it becomes easier to simulate the operation of a plurality of power supply and demand facilities according to the environment in which the user is placed.

In the evaluation method according to the third aspect, in the second aspect, the additional information includes information regarding the user's lifestyle.

According to this aspect, there is an advantage that it becomes easier to present to the user an evaluation that corresponds to the user's lifestyle.

In the evaluation method according to the fourth aspect, in any one of the first to third aspects, the evaluation includes information regarding the power self-sufficiency rate. The power self-sufficiency rate represents the ratio of the self-consumption of multiple power supply and demand facilities to the power consumption of the facility.

According to this aspect, there is an advantage that the user can easily understand the influence that the power supply and demand equipment has on the power supply and demand balance.

In the evaluation method according to the fifth aspect, in any one of the first to fourth aspects, the evaluation includes information regarding the self-consumption rate. The self-consumption rate represents the ratio of the self-consumption amount by the plurality of power supply and demand facilities to the amount of power generation by the plurality of power supply and demand facilities.

According to this aspect, there is an advantage that the user can easily understand the influence that the power supply and demand equipment has on the power supply and demand balance.

In the evaluation method according to the sixth aspect, in any one of the first to fifth aspects, the output step (ST4) displays both the information regarding the power self-sufficiency rate and the information regarding the self-consumption rate on the display device (4). ) are displayed all at once. The power self-sufficiency rate represents the ratio of the self-consumption of multiple power supply and demand facilities to the power consumption of the facility. The self-consumption rate represents the ratio of the self-consumption amount by the plurality of power supply and demand facilities to the amount of power generation by the plurality of power supply and demand facilities.

According to this aspect, there is an advantage that the user can easily understand the influence that the power supply and demand equipment has on the power supply and demand balance.

In the evaluation method according to the seventh aspect, in any one of the first to sixth aspects, in the evaluation step (ST3), when at least one of the electricity self-sufficiency rate and the self-consumption rate exceeds a corresponding threshold value, The evaluation is an error. The power self-sufficiency rate represents the ratio of the self-consumption of multiple power supply and demand facilities to the power consumption of the facility. The self-consumption rate represents the ratio of the self-consumption amount by the plurality of power supply and demand facilities to the amount of power generation by the plurality of power supply and demand facilities.

According to this aspect, there is an advantage that the user can easily understand whether or not the power supply and demand equipment scheduled to be introduced is excessive.

In the evaluation method according to the eighth aspect, in any one of the first to seventh aspects, the evaluation includes recommendation information regarding the power supply and demand equipment recommended to users who use the plurality of power supply and demand equipment.

According to this aspect, there is an advantage that it becomes easier to encourage the introduction of power supply and demand equipment suitable for the user's preferences and the like.

In the evaluation method according to the ninth aspect, in any one of the first to eighth aspects, at least one of the plurality of power supply and demand facilities has already been installed by a user who uses the plurality of power supply and demand facilities. It's the equipment.

According to this aspect, there is an advantage that when a new power supply and demand facility is added to an existing power supply and demand facility, it is easy to understand the benefits or disadvantages for the user.

In the evaluation method according to the tenth aspect, in any one of the first to eighth aspects, each of the plurality of power supply and demand facilities is a facility that is newly planned to be introduced by a user who uses the plurality of power supply and demand facilities. .

According to this aspect, there is an advantage that when newly introducing a plurality of power supply and demand facilities, it is easy to understand the benefits or disadvantages for the user.

A program according to an eleventh aspect causes one or more processors to execute the evaluation method according to any one of the first to tenth aspects.

According to this aspect, there is an advantage that it is easy to understand the benefits or disadvantages for the user when a plurality of power supply and demand facilities are introduced.

The evaluation system (100) according to the twelfth aspect includes an input reception section (1), a simulation section (21), an evaluation section (22), and an output section (3). The input reception unit (1) receives input of equipment information of a plurality of power supply and demand equipment related to the supply and demand of electric power introduced into the facility. The simulation unit (21) simulates the operation of a plurality of power supply and demand equipment based on the equipment information received by the input reception unit (1). The evaluation section (22) evaluates the results of the simulation section (21). The output unit (3) outputs the evaluation by the evaluation unit (22).

According to this aspect, there is an advantage that it is easy to understand the benefits or disadvantages for the user when a new power supply and demand facility is introduced.

The methods according to the second to tenth aspects are not essential to the evaluation method and can be omitted as appropriate.

100 Evaluation System 1 Input Reception Unit 21 Simulation Unit 22 Evaluation Unit 3 Output Unit 4 Display Device ST1 Input Reception Step ST2 Simulation Step ST3 Evaluation Step ST4 Output Step

Claims (10)

an input reception step for receiving input of equipment information of a plurality of power supply and demand equipment related to the supply and demand of electricity introduced into the facility;
a simulating step of simulating the operation of the plurality of power supply and demand facilities based on the facility information received in the input receiving step;
an evaluation step of evaluating the results of the simulation step;
an output step for outputting the evaluation in the evaluation step,
The evaluation step includes determining an electric power self-sufficiency rate representing a ratio of in-house consumption by the plurality of power supply and demand facilities to the amount of electricity consumed at the facility, and an electric power self-sufficiency rate representing a ratio of the self-consumption of the plurality of power supply and demand facilities to the amount of electricity consumed at the facility, and an electric power generation amount of the plurality of power supply and demand facilities to the amount of electricity generated by the plurality of power supply and demand facilities. If at least one of the self-consumption rate representing the proportion of self-consumption in
Evaluation method. The input accepting step further accepts input of additional information regarding users who use the plurality of power supply and demand facilities,
The simulating step simulates the operation of the plurality of power supply and demand facilities based on the additional information.
The evaluation method according to claim 1. The additional information includes information regarding the user's lifestyle.
The evaluation method according to claim 2. The evaluation includes information regarding an electric power self-sufficiency rate representing a ratio of self-consumption by the plurality of electric power supply and demand facilities to electric consumption at the facility;
The evaluation method according to any one of claims 1 to 3. The evaluation includes information regarding a self-consumption rate representing a ratio of self-consumption in the plurality of power supply and demand facilities to the amount of power generation in the plurality of power supply and demand facilities;
The evaluation method according to any one of claims 1 to 4. The output step includes information regarding an electric power self-sufficiency rate representing a ratio of self-consumption of the plurality of electric power supply and demand facilities to the electric consumption of the facility, and information regarding the electric power generation amount of the plurality of electric power supply and demand facilities relative to the amount of electricity generated by the plurality of electric power supply and demand facilities. Displaying both information on the self-consumption rate representing the proportion of self-consumption in the supply and demand equipment on a display device at once;
The evaluation method according to any one of claims 1 to 5. At least one of the plurality of power supply and demand facilities is equipment that has already been installed by a user who uses the plurality of power supply and demand facilities;
The evaluation method according to any one of claims 1 to 6. Each of the plurality of power supply and demand facilities is a new facility that is planned to be introduced by a user who uses the plurality of power supply and demand facilities;
The evaluation method according to any one of claims 1 to 6. one or more processors,
executing the evaluation method according to any one of claims 1 to 8;
program. an input reception unit that receives input of equipment information of a plurality of power supply and demand equipment related to the supply and demand of electricity introduced into the facility;
a simulation unit that simulates the operation of the plurality of power supply and demand equipment based on the equipment information received by the input reception unit;
an evaluation section that evaluates the results of the simulation section;
an output unit that outputs the evaluation by the evaluation unit,
The evaluation unit calculates an electric power self-sufficiency rate representing a ratio of in-house consumption by the plurality of power supply and demand equipments to the amount of electricity consumed in the facility, and an electric power self-sufficiency rate representing a ratio of in-house consumption by the plurality of power supply and demand equipments to the amount of electricity consumed at the facility, and an electric power generation amount by the plurality of power supply and demand equipments to the amount of electricity generated by the plurality of power supply and demand equipments. If at least one of the self-consumption rate representing the proportion of self-consumption in
Rating system.

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