JP6262954B2 - Storage battery introduction effect evaluation device, storage battery introduction effect evaluation method, and program - Google Patents

Description

  The present invention relates to a storage battery introduction effect evaluation device, a storage battery introduction effect evaluation method, and a program.

In order to reduce the consumption of commercial power in consideration of environmental and resource problems, storage batteries have been introduced in energy management systems such as houses, commercial facilities, and public facilities.
With such a background, the following is known as an energy management system using a storage battery. That is, the energy management system accumulates fixed information and fluctuation information of the storage battery in the learning database, and classifies the charge / discharge characteristics of the storage battery by performing learning based on the stored information. And an energy management system performs charge / discharge control based on the classified charge / discharge characteristic (for example, refer patent document 1).

JP 2012-29451 A

  As described above, the storage battery introduced into a house or facility is expensive because of its large scale, and for this reason, users tend to stay on the introduction of the storage battery. Therefore, when determining whether or not a user should install a storage battery, for example, information on economics, such as how much cost benefits can be obtained after elapse of the introduction, is an effective determination material. Become.

The performance of the storage battery is not constant but deteriorates, but the degree of progress of deterioration varies depending on the operating condition including the environment (operating environment) in which the storage battery is operated and the upper and lower limits of the charge / discharge capacity. . The economics of storage batteries are affected by the deterioration of the storage battery. Therefore, in order to predict the economic efficiency of the introduction of the storage battery with high accuracy, it is necessary to consider the difference in the deterioration of the storage battery in accordance with the operating environment and operating conditions as described above.
The configuration of Patent Document 1 is to learn about the characteristics of the storage battery after introduction, and to perform charge / discharge control based on the learning result to suppress the deterioration of the storage battery. It is difficult to predict the economics of.

  The present invention has been made in view of such circumstances, and an object of the present invention is to make it possible to evaluate the economic efficiency when a storage battery is introduced with high accuracy before the storage battery is introduced.

  In order to solve the above-described problems, the storage battery introduction effect evaluation device according to one aspect of the present invention is configured to perform an operation for setting parameters used for evaluation of economics when a storage battery is introduced into a power system of a facility. Accordingly, the operation of the storage battery during the evaluation period when the storage battery is introduced into the power system of the facility is predicted using a parameter registration unit that registers parameters and a predetermined parameter among the registered parameters. An operation content prediction unit, a capacity maintenance rate prediction unit that predicts a capacity maintenance rate in the evaluation period using a predicted operation content and a predetermined parameter among registered parameters, and a predicted capacity maintenance Utility cost during the evaluation period when a storage battery is introduced into the power system of the facility using the rate and a predetermined parameter of the registered parameters The storage cost of the storage battery during the evaluation period when the storage battery is introduced into the power system of the facility using the predicted utility cost prediction unit, the predicted capacity maintenance rate and a predetermined parameter among the registered parameters A storage cost in the power system of the facility using the maintenance cost prediction unit for predicting the storage cost, the initial cost when the storage battery is introduced into the power system of the facility, the predicted utility cost, and the predicted maintenance cost And an evaluation unit that evaluates the economic efficiency during the evaluation period in the case of introducing.

  In the above storage battery introduction effect evaluation device, the evaluation unit calculates the total burden during the evaluation period when the storage battery is introduced into the facility power system, and the initial cost when the storage battery is introduced into the facility power system. And the estimated utility cost and the maintenance cost, and the calculated total burden may be output as the evaluation result.

  Moreover, in said storage battery introduction effect evaluation apparatus, the said evaluation part may output an evaluation result by the predetermined | prescribed aspect which a user can recognize.

  Further, in the storage battery introduction effect evaluation device, the utility cost prediction unit uses a predetermined parameter among the registered parameters, and is a comparison target in an evaluation period when a storage battery is not introduced into the power system of the facility The evaluation unit further compares the economic efficiency of the facility evaluated in response to a case where a storage battery is not introduced into the power system of the facility based on the utility cost of the comparison target, and the power of the facility. You may output an evaluation result so that it may compare with the economical efficiency evaluated corresponding to the case where a storage battery is introduced into a system.

  Moreover, in said storage battery introduction effect evaluation apparatus, the said parameter registration part may register the evaluation period input by operation which sets a parameter as said parameter.

  The storage battery introduction effect evaluation method according to one aspect of the present invention is a parameter registration for registering a parameter in response to an operation for setting a parameter used for economic evaluation when a storage battery is introduced into a power system of a facility. An operation content prediction step for predicting the operation content of the storage battery in an evaluation period when a storage battery is introduced into the power system of the facility using a predetermined parameter among the registered parameters, A capacity maintenance rate prediction step for predicting a capacity maintenance rate in the evaluation period using the operation content and a predetermined parameter among the registered parameters, and the predicted capacity maintenance rate and the registered parameters Light that predicts utility costs during the evaluation period when a storage battery is introduced into the power system of the facility using predetermined parameters Predicting the maintenance cost of the storage battery during the evaluation period when the storage battery is introduced into the power system of the facility using the cost prediction step, the predicted capacity maintenance rate and a predetermined parameter among the registered parameters Utilizing the maintenance cost prediction step, the initial cost when the storage battery is introduced into the power system of the facility, the predicted utility cost, and the predicted maintenance cost, the storage battery is introduced into the power system of the facility And an evaluation step for evaluating economy in the evaluation period.

  The program according to one aspect of the present invention is a parameter registration step of registering a parameter in response to an operation for setting a parameter used for evaluation of economics when a storage battery is introduced into a power system of a facility in a computer. And an operation content prediction step for predicting the operation content of the storage battery in the evaluation period when a storage battery is introduced into the power system of the facility using a predetermined parameter of the registered parameters, and the predicted operation A capacity maintenance rate prediction step for predicting a capacity maintenance rate in the evaluation period using the content and a predetermined parameter of the registered parameters, a predetermined capacity maintenance rate and a predetermined parameter of the registered parameters To estimate the utility cost during the evaluation period when a storage battery is installed in the power system of the facility. Predicting the maintenance cost of the storage battery in the evaluation period when the storage battery is introduced into the power system of the facility using the utility cost prediction step, the predicted capacity maintenance rate and a predetermined parameter among the registered parameters The storage cost is introduced into the power system of the facility using the maintenance cost prediction step, the initial cost when the storage battery is introduced into the power system of the facility, the predicted utility cost, and the predicted maintenance cost. In this case, the evaluation step for evaluating the economic efficiency in the evaluation period is executed.

  As described above, according to the present invention, it is possible to evaluate the economic efficiency when a storage battery is introduced with high accuracy before the storage battery is introduced.

It is a figure which shows the structural example of the storage battery introduction effect evaluation apparatus which concerns on this embodiment. It is a figure which shows the structural example of the storage battery information database which concerns on this embodiment. It is a figure which shows the example of the parameter which the parameter memory | storage part concerning this embodiment memorize | stores. It is a figure which shows the example of the prediction result by the utility bill prediction part which concerns on this embodiment. It is a figure which shows the example of the prediction result about the replacement | exchange time of the storage battery estimated in the process in which the maintenance cost prediction part which concerns on this embodiment estimates the maintenance cost about the storage battery of introduction examination object. It is a figure which shows the example of the evaluation result based on the total burden calculated by the evaluation part which concerns on this embodiment. It is a flowchart which shows the example of a process sequence which the storage battery introduction effect evaluation apparatus which concerns on this embodiment performs.

The storage battery introduction effect evaluation device (hereinafter simply referred to as an evaluation device) of the present embodiment evaluates the economic efficiency when the storage battery is introduced into a power system of a facility (a house, a public facility, a commercial facility, etc.).
By providing the storage battery, surplus power can be stored, and the stored power can be supplied to the load as needed, so that the power consumption of the commercial power source is reduced and the utility cost is reduced. On the other hand, the introduction of a storage battery requires not only the cost at the time of introduction but also maintenance costs such as replacement of the storage battery.
The evaluation apparatus according to the present embodiment evaluates the economic efficiency including the utility cost and the maintenance cost when the storage battery is introduced before introducing the storage battery. In other words, the evaluation device evaluates, as an introduction effect of the storage battery, how much the economic effect of the introduction of the storage battery is before introducing the storage battery.

FIG. 1 shows a configuration example of the evaluation apparatus according to the present embodiment. The evaluation apparatus shown in the figure includes an operation unit 101, a control unit 102, a storage unit 103, and a display unit 104.
The operation unit 101 receives an operation by a user. The user designates a parameter to be set by causing the evaluation apparatus to perform economic evaluation by introducing the storage battery by operating the operation unit 101.

The control unit 102 executes various processes corresponding to economic evaluation by introducing a storage battery. The function as the control unit 102 can be realized, for example, by causing a CPU (Central Processing Unit) to execute a program for evaluation.
The control unit 102 includes a parameter registration unit 121, an operation content prediction unit 122, a capacity maintenance rate prediction unit 123, a utility cost prediction unit 124, a maintenance cost prediction unit 125, and an evaluation unit 126 as functional units.

The storage unit 103 stores various information used by the control unit 102. The storage unit 103 includes a storage battery information database storage unit 131 and a parameter storage unit 132.
The display unit 104 displays an image according to the control of the control unit 102.

  In the control unit 102, the parameter registration unit 121 registers a parameter in response to an operation (parameter registration operation) for registering a parameter used for economic evaluation when a storage battery is introduced into the facility power system. . The parameter registration unit 121 stores the parameter acquired according to the parameter registration operation in the parameter storage unit 132 in the storage unit 103. Thereby, registration of parameters is performed.

Here, processing related to parameter registration by the parameter registration unit 121 will be described.
Depending on the parameter registration operation, a storage battery to be studied for introduction is specified. The parameter registration unit 121 obtains information about the storage battery targeted for introduction designated by the parameter registration operation from the storage battery information database stored in the storage battery information database storage unit 131.

FIG. 2 shows a structural example of a storage battery information database stored in the storage battery information database storage unit 131.
In the example of the figure, the storage battery information database has a structure in which each attribute of storage battery identifier, standard specification, speed constant, and cost information is included in a record corresponding to each storage battery.
The storage battery identifier is an identifier that uniquely identifies the corresponding storage battery. In this case, the storage battery identifier may be a product number or the like.
The standard specification is information that stores predetermined items related to a predetermined standard and specification for a corresponding storage battery, such as a rating and an initial chargeable capacity (maximum charge capacity that can be stored in the initial stage (when new)).
The rate constant is used by the capacity maintenance rate prediction unit 123 to calculate the capacity maintenance rate for the corresponding storage battery. The rate constant is a constant representing a degradation rate (degradation degree) according to the operating time and a degradation rate (degradation degree) according to the number of charge / discharge cycles, but differs depending on the characteristics of each storage battery. The speed constant for each storage battery can be obtained by, for example, experiments.

The cost information stores information related to costs such as introduction cost, replacement cost, and inspection cost for the corresponding storage battery.
The introduction cost is a cost required when the corresponding storage battery is first introduced into the facility, and includes the price of the storage battery, the construction cost for installing the storage battery, and the like.
The replacement cost is a cost required when the storage battery is to be replaced in the future, and includes the price of the storage battery and the construction cost for installing the storage battery as well as the introduction cost. However, in the case of replacement costs, the price of the storage battery is changed on a yearly basis, for example, in anticipation of the price becoming cheaper due to future spread. In addition, if costs are incurred for periodic inspections, the periodic inspection costs are also included in the replacement costs.

  The parameter registration unit 121 acquires a record (storage battery identifier, standard specification, speed constant, cost information) corresponding to the storage battery designated as the introduction examination target from the storage battery information database stored in the storage battery information database storage unit 131. The parameter registration unit 121 stores the acquired record information in the parameter storage unit 132 as a storage battery related parameter.

  Also, depending on the parameter registration operation, predetermined items (operating environment items) relating to the operating environment such as electrical equipment and environmental temperature as loads provided in the facility where the storage battery is introduced are input. The parameter registration unit 121 causes the parameter storage unit 132 to store the contents of the driving environment item input by the parameter registration operation as driving environment parameters.

The parameter registration unit 121 also causes the parameter storage unit 132 to store the evaluation period designated by the parameter registration operation.
Here, the evaluation period is a period in which it is designated that the economic evaluation should be performed with the time when the operation of the storage battery is started as the start time. The evaluation period is specified as, for example, 1 year, 20 years, or 30 years by the parameter registration operation.
When considering the introduction of a storage battery, for example, there may be a case where it is desired to confirm a long-term economic effect and a case where a short-term economic effect is desired. Therefore, if the user can arbitrarily set the evaluation period, the evaluation result in the period according to the user's request as described above can be presented.

  When the parameter registration unit 121 registers parameters as described above, the parameter storage unit 132 stores parameters such as storage battery-related parameters, operating environment parameters, and evaluation periods as shown in FIG.

Returning to FIG.
The operation content prediction unit 122 predicts the operation content of the storage battery during the evaluation period when the storage battery is introduced into the power system of the facility, using a predetermined parameter among the parameters registered by the parameter registration unit 121.
For example, the operation content prediction unit 122 is configured to charge / discharge cycles corresponding to a certain period divided in the evaluation period based on the driving environment parameter stored in the parameter storage unit 132, the load estimated based on the driving environment parameter, and the like. Number, SOC behavior (SOC behavior) during charging / discharging, storage time, environmental temperature, and other items are predicted.
At this time, the operation content prediction unit 122 considers the capacity maintenance rate for a certain previous period predicted by the capacity maintenance rate prediction unit 123, which will be described later, in predicting each of the above items. That is, the operation content prediction unit 122 also changes the SOC allowable upper limit value and the SOC allowable lower limit value based on the capacity decrease accompanying the deterioration of the storage battery.

The capacity maintenance rate prediction unit 123 introduces the storage battery into the power system of the facility using the operation content predicted by the operation content prediction unit 122 and a predetermined parameter among the parameters registered by the parameter registration unit 121. The capacity maintenance rate during the evaluation period is predicted.
The capacity maintenance rate is an index for the storage battery and indicates how much the current storage capacity is maintained with respect to the initial storage capacity (maximum charge amount that can be stored in the storage battery).

As an example, the capacity maintenance rate prediction unit 123 can predict the capacity maintenance rate of the storage battery for each fixed time in the evaluation period as follows.
Here, the partial differential coefficient δz / δx as the difference δz of the capacity retention ratio z with respect to the difference δx of the storage time x is obtained using the following Equation 1.

In Equation 1, A _p and E _p are rate constants representing the rate of degradation with respect to degradation due to storage time (storage degradation), and SOC is SOC (State Of Charge) during storage. T is the ambient temperature and R is the gas constant. Equation 1 shows that the rate constants A _p and E _p are changed according to the SOC and the environmental temperature T.
The capacity maintenance rate prediction unit 123 obtains the rate constants A _p , E _p , and the gas constant R from the storage battery-related parameters when obtaining the partial differential coefficient δz / δx, and the storage time x, SOC, and environmental temperature T are Obtained from the content prediction unit 122.

  Further, the partial differential coefficient as the difference δz of the capacity retention ratio z with respect to the difference δy of the number of charge / discharge cycles y is obtained by the following equation 2.

In Equation 2, A _cyc and E _cyc are rate constants representing the deterioration rate of deterioration due to charge / discharge cycles (charge / discharge deterioration), SOC _L is the SOC allowable lower limit value, and SOC _U is the SOC allowable upper limit value. . Also in Formula 2, changes due to the SOC of the rate constants A _p and E _p are reflected. In Equation 1, the speed constants A _cyc and E _cyc are changed according to the SOC allowable lower limit value SOC _L , the SOC allowable upper limit value SOC _U, and the environmental temperature T.
In obtaining the partial differential coefficient δz / δy, the capacity maintenance rate prediction unit 123 acquires the rate constants A _cyc , E _cyc , and the gas constant R from the storage battery related parameters, and the charge / discharge cycle number y, the SOC allowable lower limit value SOC _L , The SO allowable upper limit value SOC _U and the environmental temperature T are acquired from the operation content prediction unit 122.

  For example, when calculating the capacity maintenance rate z, the capacity maintenance rate prediction unit 123 obtains each partial differential coefficient according to the above formulas 1 and 2, and obtains the total differential coefficient dz of the capacity maintenance rate z according to the following formula 3. .

  The capacity maintenance rate prediction unit 123 calculates the amount of change in the capacity maintenance rate in the evaluation period by integrating the total differential coefficient dz of the capacity maintenance rate z obtained at regular intervals in the evaluation period, and evaluates from the calculated amount of change. The capacity maintenance rate corresponding to the period is obtained.

The utility cost prediction unit 124 introduces a storage battery into the power system of the facility using the capacity maintenance rate predicted by the capacity maintenance rate prediction unit 123 and a predetermined parameter among the parameters registered by the parameter registration unit 121. The utility cost during the evaluation period is predicted.
Specifically, the utility cost prediction unit 124 multiplies the capacity maintenance rate predicted by the capacity maintenance rate prediction unit 123 by a certain time interval by the initial chargeable capacity of the storage battery that is the subject of introduction study, thereby obtaining a constant during the evaluation period. Calculate the chargeable capacity for each hour. The utility cost predicting unit 124 calculates the amount of use of public energy such as commercial power and public gas at regular intervals based on the calculated capacity that can be stored and the operation plan of the electrical equipment in the facility derived from the operating environment parameters. Predicting and predicting the utility cost for each predetermined unit time in the evaluation period based on the accumulable capacity and the predicted energy usage.

  If a storage battery is introduced, surplus power is charged to the storage battery when the power supplied from the solar battery, etc. provided in the facility is surplus, and the stored power of the storage battery is discharged and supplied to the load at night Can do. Alternatively, the power of the commercial power supply is charged to the storage battery at a time when the electricity rate is set low, such as at midnight, and the stored power of the storage battery is discharged to the load at a time when the electricity rate is set at a high time other than midnight. Can be supplied. Therefore, the utility cost predicted according to the introduction of the storage battery is lower than that in the case where the storage battery is not introduced.

The maintenance cost prediction unit 125 introduced a storage battery into the power system of the facility based on the capacity maintenance rate predicted by the capacity maintenance rate prediction unit 123 and a predetermined parameter among the parameters registered by the parameter registration unit 121. Predict the maintenance cost of the storage battery during the evaluation period.
For this reason, the maintenance cost prediction unit 125 obtains the replacement time of the storage battery in the evaluation period based on the predicted capacity maintenance rate and the storage battery replacement condition represented by the capacity maintenance rate. The threshold value of the capacity maintenance rate corresponding to the storage battery replacement is included in, for example, a storage battery related parameter.
The maintenance cost prediction unit 125 calculates the maintenance cost of the storage battery in the evaluation period by using the number of replacements based on the replacement time predicted in the evaluation period and the cost information indicated in the storage battery related parameters. This maintenance cost is, for example, the total of the replacement cost required each time the storage battery is replaced and the cost required for each periodic inspection performed during the evaluation period.

The evaluation unit 126 considers the introduction based on the initial cost when the storage battery to be studied for introduction is introduced, the utility cost predicted by the utility cost prediction unit 124, and the maintenance cost predicted by the maintenance cost prediction unit 125. Evaluate the economics during the evaluation period when the target storage battery is introduced.
Specifically, the evaluation unit 126 calculates the total burden, which is the sum of the initial cost, the utility cost, and the maintenance cost, at regular intervals in the evaluation period. That is, the evaluation unit 126 obtains a change in the total burden amount with the passage of time in the evaluation period. The total burden thus obtained is included in the evaluation result of the evaluation unit 126.
The evaluation unit 126 outputs the evaluation result thus obtained in a predetermined manner that can be recognized by the user. Specifically, the evaluation unit 126 causes the display unit 104 to display the evaluation result in a predetermined manner.

  With the configuration described so far, the change in the total burden during the evaluation period when the storage battery is introduced is presented as the evaluation result. However, for example, for those considering the introduction of storage batteries, if the evaluation results show changes in the total burden when the storage batteries are not introduced during the same evaluation period, the correctness of introduction of the storage batteries can be accurately determined. Judgment can be made.

Therefore, the utility cost prediction unit 124 further predicts the utility cost to be compared in the evaluation period when the storage battery is not introduced, using a predetermined parameter among the parameters registered by the parameter registration unit 121. That is, the utility cost prediction unit 124 predicts the usage amount of public energy during the evaluation period when the storage battery is not introduced, and predicts the utility cost based on the predicted usage amount.
And the evaluation part 126 evaluates so that the economical efficiency evaluated corresponding to the case where a storage battery is not introduced based on the utility cost of a comparison object, and the economical efficiency evaluated corresponding to the case where a storage battery is introduced may be compared. Output the result.

FIG. 4 shows the prediction result of the utility cost prediction unit 124. In the figure, the horizontal axis indicates the number of years elapsed (evaluation period), and the vertical axis indicates the annual utility cost.
In the figure, lines L1, L2, and L3 correspond to each pattern (introduction pattern) of introduction to a facility related to a storage battery.
That is, the line L1 shows the change in annual utility costs in 30 years when a solar cell is introduced together with a storage battery to be introduced as an introduction pattern. Since a power generation device using natural energy such as a solar cell has a large fluctuation according to weather conditions and the like, the generated power can be smoothed and effectively used by using a storage battery together. Therefore, in the example of FIG. 4, as a recommended pattern, a result when a solar battery is introduced together with a storage battery is shown.
The line L2 shows the change in annual utility costs in 30 years when a storage battery is not introduced but a solar battery is introduced as an introduction pattern.
A line L3 indicates a change in annual utility cost in 30 years when neither a storage battery nor a solar battery is introduced as an introduction pattern.

As understood from the figure, the annual energy bill is the lowest when solar cells are introduced together with the storage battery in the period from the start of introduction to the 30th year. Moreover, the annual energy cost when introducing a solar cell without introducing a storage battery is the next lowest, and the annual energy cost when neither a storage battery nor a solar cell is introduced is the highest.
For example, the initial value of the storage battery can be obtained by obtaining the number of years until the first time that the integrated value from the introduction start year of the difference between the annual utility costs indicated by the line L2 or the line L3 with respect to the annual high utility costs indicated by the line L1 exceeds the initial introduction costs. You can predict how many years it will take to recover the installation costs. Such evaluation of the recovery period of the initial introduction cost of the storage battery may be performed by the evaluation unit 126.

Further, FIG. 5 shows a prediction result of the replacement time of the storage battery predicted in the process in which the maintenance cost prediction unit 125 predicts the maintenance cost of the storage battery to be introduced. In the figure, the horizontal axis indicates the number of years elapsed, and the vertical axis indicates the number of replacements.
In the same figure, line L11 has shown the replacement | exchange time of the storage battery in the 30-year evaluation period at the time of introduce | transducing a solar cell with the storage battery of introduction examination object. According to the figure, it is shown that the storage battery is replaced about once every 13.5 years. That is, in 30 years, it is predicted that the storage battery will be replaced twice. In the figure, the storage battery is exchanged once in the year from the 13th year to the 14th year, and the storage battery is exchanged once in the year from the 22nd year to the 23rd year. This shows the case where this is predicted. In other words, the figure shows an example in which the replacement time in years is predicted.
In addition, instead of yearly units, the storage battery replacement time is determined in units based on the month, such as semi-annual units, three-month units, four-month units, and one-month units. It may be predicted.

The line L12 indicates the replacement time of the storage battery in the evaluation period of 30 years when the storage battery is not introduced but the solar battery is introduced. A line L13 indicates the replacement time of the storage battery in the evaluation period of 30 years when neither the storage battery nor the solar battery is introduced.
There is no need to replace the storage battery in either case where the storage battery is not introduced but the solar battery is introduced, or in the case where neither the storage battery nor the solar battery is introduced. As a result, the number of exchanges of the lines L12 and L13 is 0 over the 30-year evaluation period.

FIG. 6 shows the evaluation results of the evaluation unit 126 corresponding to the prediction results of FIGS. 4 and 5. In the figure, the horizontal axis indicates the number of years elapsed, and the vertical axis indicates the total burden.
In the same figure, line L21 has shown the total burden in the 30-year evaluation period at the time of introduce | transducing a solar cell with the storage battery of introduction examination object.
A line L22 indicates the total amount of burden during the 30-year evaluation period when the storage battery is not introduced but the solar battery is introduced. A line L23 indicates the total burden during the 30-year evaluation period when neither the storage battery nor the solar battery is introduced.

  According to these lines L21, L22, and L23, when the solar battery is introduced together with the storage battery about 16 years after the introduction, the total burden is lower than the case where neither the storage battery nor the solar battery is introduced. Furthermore, when it reaches about the 17th year, the total burden amount when a storage battery and a solar battery are introduced is lower than that when a storage battery is not introduced but a solar battery is introduced. That is, the example of FIG. 6 shows that when the storage battery is introduced into the facility, the total burden is reduced from about the 16th year to the 17th year, compared with the case without the storage battery. Yes.

For example, the evaluation unit 126 causes the display unit 104 to display the evaluation result illustrated in FIG. 6 in a predetermined manner. That is, the evaluation unit 126 presents, as an image, a result of evaluating the economic efficiency when the storage battery is introduced by comparison with the case where the storage battery is not introduced. Thereby, the economic effect is easier to understand than the case of presenting the evaluation result such as the total burden only when the storage battery is introduced.
The evaluation unit 126 is obtained in the process of obtaining a final evaluation result such as a prediction result by the utility cost prediction unit 124 illustrated in FIGS. 4 and 5 or a storage battery replacement time predicted by the maintenance cost prediction unit 125. The obtained prediction results and calculation results can also be displayed in a predetermined manner.

  The flowchart of FIG. 7 shows an example of a processing procedure executed by the evaluation apparatus of the present embodiment. 4 to 6, the process shown in FIG. 4 is performed when the storage battery and the solar battery are introduced, when the storage battery is not introduced but the solar battery is introduced, and either of the storage battery and the solar battery. This corresponds to the case where the comparison result of each total burden with the case of not introducing it is obtained and output as the evaluation result.

  In the figure, the parameter registration unit 121 registers parameters used for evaluation by the evaluation apparatus in response to a parameter registration operation performed on the operation unit 101 (step S101). As described above, the parameter registration unit 121 registers parameters by causing the parameter storage unit 132 to store the parameters.

  Next, the operation content prediction unit 122 predicts the operation content of the storage battery to be studied for introduction at regular intervals by using the predetermined parameter among the parameters registered in step S101 as described above (step S102). ).

Next, the capacity maintenance rate prediction unit 123 uses the predetermined operation parameter of the storage battery predicted by the operation content prediction unit 122 and the parameter registered in step S101, and the capacity of the storage battery to be studied for introduction. The maintenance rate is predicted at regular intervals in the evaluation period (step S103).
Next, the utility cost prediction unit 124 uses the capacity maintenance rate predicted in step S103 and a predetermined parameter among the parameters registered in step S101, and the light heat when the storage battery and the solar cell are introduced. Costs are predicted at regular intervals in the evaluation period (step S104).
In addition, the maintenance cost prediction unit 125 uses the capacity maintenance rate predicted in step S103 and a predetermined parameter among the parameters registered in step S101, so that the maintenance cost when the storage battery and the solar battery are introduced is used. Is predicted at regular intervals in the evaluation period (step S105).
Next, the evaluation unit 126 introduces the storage battery and the solar battery using the initial introduction cost, which is one of the parameters, the utility cost predicted in step S104, and the maintenance cost predicted in step S105. In this case, the total burden during the evaluation period is calculated (step S106).

Next, the utility cost prediction unit 124 uses a predetermined parameter among the parameters registered in step S101 to calculate the utility cost at a certain time in the evaluation period when a storage cell is not introduced but a solar cell is introduced. Prediction is performed (step S107).
The evaluation unit 126 calculates the total burden during the evaluation period when the storage battery is not introduced but the solar battery is introduced by using the utility cost predicted at Step S107 (Step S108). In addition, when estimating the total burden in the evaluation period when a storage battery is not introduced but a solar battery is introduced, the maintenance cost of the solar battery may be considered.

Next, the utility cost prediction unit 124 predicts the utility cost at a fixed time in the evaluation period when neither the storage battery nor the solar cell is introduced, using a predetermined parameter among the parameters registered in step S101. (Step S109).
The evaluation unit 126 calculates the total burden during the evaluation period when neither the storage battery nor the solar battery is introduced, using the utility cost predicted in step S109 (step S110).

Then, the evaluation unit 126 displays the evaluation result on the display unit 104. That is, the evaluation unit 126 displays the total burden corresponding to each introduction pattern calculated in steps S106, S108, and S110 in a predetermined manner (step S111). At this time, the evaluation unit 126 can display the total burden amount of each introduction pattern in a manner that allows comparison. By looking at such a display, the introduction examiner can clearly grasp the introduction effect of the storage battery or the solar battery. Note that the evaluation unit 126 can individually display the total burden corresponding to each introduction pattern.
At this time, as described above, the evaluation unit 126 may appropriately display various prediction results, calculation results, and the like in the process until the total burden is calculated, according to a user operation or the like. Specifically, for example, the evaluation unit 126 may perform display related to the prediction result of the utility cost corresponding to each introduction pattern, display indicating the prediction result of the replacement time of the storage battery, and the like.

  In the above example, evaluation is performed when a solar cell is introduced together with a storage battery. However, the evaluation device of this embodiment does not introduce a solar cell but also evaluates when a storage battery is introduced. Can be done.

  In addition, the evaluation apparatus of this embodiment also estimates the utility cost of the facility when a storage battery is introduced. Therefore, the evaluation apparatus according to the present embodiment may perform an evaluation on the environment such as the carbon dioxide emission amount according to the power consumption of the facility based on the prediction result of the utility cost.

  A program for realizing the functions of the above-described evaluation apparatus is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read by a computer system and executed, thereby executing the above-described evaluation apparatus. Processing may be performed. Here, “loading and executing a program recorded on a recording medium into a computer system” includes installing the program in the computer system. The “computer system” here includes an OS and hardware such as peripheral devices. Further, the “computer system” may include a plurality of computer devices connected via a network including a communication line such as the Internet, WAN, LAN, and dedicated line. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. As described above, the recording medium storing the program may be a non-transitory recording medium such as a CD-ROM. The recording medium also includes a recording medium provided inside or outside that is accessible from the distribution server in order to distribute the program. The code of the program stored in the recording medium of the distribution server may be different from the code of the program that can be executed by the terminal device. That is, the format stored in the distribution server is not limited as long as it can be downloaded from the distribution server and installed in a form that can be executed by the terminal device. Note that the program may be divided into a plurality of parts, downloaded at different timings, and combined in the terminal device, or the distribution server that distributes each of the divided programs may be different. Furthermore, the “computer-readable recording medium” holds a program for a certain period of time, such as a volatile memory (RAM) inside a computer system that becomes a server or a client when the program is transmitted via a network. Including things. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

DESCRIPTION OF SYMBOLS 101 Operation part 102 Control part 103 Memory | storage part 104 Display part 121 Parameter registration part 122 Operation | movement content prediction part 123 Capacity | capacitance maintenance rate prediction part 124 Utility cost prediction part 125 Maintenance cost prediction part 126 Evaluation part 131 Storage battery information database storage part 132 Parameter storage part

Claims (7)

A parameter registration unit for registering parameters according to the operation for setting parameters used for evaluating economics when a storage battery is introduced into the power system of the facility,
Among the registered parameters , using operating environment parameters including information on electrical equipment as a load provided in a facility where a storage battery is introduced, and an environmental temperature corresponding to the storage battery , The operation contents of the storage battery in the evaluation period when the storage battery is introduced into the power system of the facility, including the storage time of the storage battery, the number of charge / discharge cycles of the storage battery, and the environmental temperature corresponding to the storage battery and the operation content prediction unit to predict the operation content,
It is a speed constant in the registered parameter, according to the speed constant according to the storage time and environmental temperature of the storage battery in the predicted operation content, and according to the number of charge / discharge cycles and the environmental temperature in the predicted operation content A capacity maintenance rate prediction unit that predicts the capacity maintenance rate in the evaluation period based on the rate of change of the capacity maintenance rate obtained using the rate constant ;
Utilizing the predicted capacity maintenance rate and a predetermined parameter among the registered parameters, a utility cost prediction unit that predicts a utility cost in an evaluation period when a storage battery is introduced into the power system of the facility,
A maintenance cost prediction unit for predicting the maintenance cost of the storage battery during the evaluation period when the storage battery is introduced into the power system of the facility using the predicted capacity maintenance rate and a predetermined parameter among the registered parameters; ,
Economy in the evaluation period when a storage battery is introduced into the power system of the facility, using initial costs when the storage battery is introduced into the power system of the facility, predicted utility costs, and predicted maintenance costs A storage battery introduction effect evaluation device comprising: an evaluation unit that evaluates performance. The evaluation unit is
The total burden during the evaluation period when a storage battery is introduced into the facility's power system, using the initial cost when the storage battery is introduced into the facility's power system, the estimated utility cost, and the maintenance cost The storage battery introduction effect evaluation device according to claim 1, wherein the calculated total burden is output as an evaluation result . The evaluation unit is
The storage battery introduction effect evaluation device according to claim 1, wherein the evaluation result is output in a predetermined manner that the user can recognize. The utility bill prediction unit
Using a predetermined parameter among the registered parameters, further predicting the utility cost for comparison in the evaluation period when the storage battery is not introduced into the power system of the facility,
The evaluation unit is
Evaluated corresponding to the economic efficiency of the comparative object evaluated corresponding to the case where the storage battery is not introduced into the power system of the facility based on the utility cost of the comparison object, and corresponding to the case where the storage battery is introduced into the power system of the facility The storage battery introduction effect evaluation device according to any one of claims 1 to 3, wherein an evaluation result is output so as to be compared with economic efficiency. The parameter registration unit
The storage battery introduction effect evaluation device according to any one of claims 1 to 4, wherein an evaluation period input by an operation of setting a parameter is registered as the parameter. A parameter registration step for registering a parameter in response to an operation for setting a parameter used for evaluation of economics when a storage battery is introduced into the facility power system,
Among the registered parameters , using operating environment parameters including information on electrical equipment as a load provided in a facility where a storage battery is introduced, and an environmental temperature corresponding to the storage battery , The operation contents of the storage battery in the evaluation period when the storage battery is introduced into the power system of the facility, including the storage time of the storage battery, the number of charge / discharge cycles of the storage battery, and the environmental temperature corresponding to the storage battery Driving content prediction step for predicting driving content;
It is a speed constant in the registered parameter, according to the speed constant according to the storage time and environmental temperature of the storage battery in the predicted operation content, and according to the number of charge / discharge cycles and the environmental temperature in the predicted operation content A capacity maintenance rate prediction step for predicting a capacity maintenance rate in the evaluation period based on a rate of change of the capacity maintenance rate obtained using a rate constant ;
Utilizing the predicted capacity maintenance rate and a predetermined parameter among the registered parameters, a utility cost prediction step for predicting a utility cost in an evaluation period when a storage battery is introduced into the power system of the facility,
A maintenance cost prediction step of predicting a maintenance cost of the storage battery in an evaluation period when the storage battery is introduced into the power system of the facility, using the predicted capacity maintenance rate and a predetermined parameter among the registered parameters; ,
Economy in the evaluation period when a storage battery is introduced into the power system of the facility, using initial costs when the storage battery is introduced into the power system of the facility, predicted utility costs, and predicted maintenance costs A storage battery introduction effect evaluation method comprising: an evaluation step for evaluating performance. On the computer,
A parameter registration step for registering a parameter in response to an operation for setting a parameter used for evaluation of economics when a storage battery is introduced into the facility power system,
Among the registered parameters , using operating environment parameters including information on electrical equipment as a load provided in a facility where a storage battery is introduced, and an environmental temperature corresponding to the storage battery , The operation contents of the storage battery in the evaluation period when the storage battery is introduced into the power system of the facility, including the storage time of the storage battery, the number of charge / discharge cycles of the storage battery, and the environmental temperature corresponding to the storage battery Driving content prediction step for predicting driving content;
It is a speed constant in the registered parameter, according to the speed constant according to the storage time and environmental temperature of the storage battery in the predicted operation content, and according to the number of charge / discharge cycles and the environmental temperature in the predicted operation content A capacity maintenance rate prediction step for predicting a capacity maintenance rate in the evaluation period based on a rate of change of the capacity maintenance rate obtained using a rate constant ;
Utilizing the predicted capacity maintenance rate and a predetermined parameter among the registered parameters, a utility cost prediction step for predicting a utility cost in an evaluation period when a storage battery is introduced into the power system of the facility,
A maintenance cost prediction step of predicting a maintenance cost of the storage battery in an evaluation period when the storage battery is introduced into the power system of the facility, using the predicted capacity maintenance rate and a predetermined parameter among the registered parameters; ,
Economy in the evaluation period when a storage battery is introduced into the power system of the facility, using initial costs when the storage battery is introduced into the power system of the facility, predicted utility costs, and predicted maintenance costs A program for executing an evaluation step for evaluating sex.

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