WO2022255374A1 - エネルギー消費量予測装置、エネルギー消費量予測方法およびエネルギー消費量予測プログラム - Google Patents
エネルギー消費量予測装置、エネルギー消費量予測方法およびエネルギー消費量予測プログラム Download PDFInfo
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/003—Load forecast, e.g. methods or systems for forecasting future load demand
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
Definitions
- the present disclosure relates to an energy consumption prediction device, an energy consumption prediction method, and an energy consumption prediction program.
- Patent Literature 1 describes that when past record information on energy use is displayed on a display means, a planned value for future energy use is set for each time zone by a planned value setting means.
- Patent Document 1 when using past performance information, the date is specified and the information is acquired.
- the conditions suitable for the target day for predicting the consumption amount cannot be extracted only by using the date, and there is room for improvement from the viewpoint of the prediction accuracy of the energy consumption amount.
- the present disclosure has been made in view of the above, and aims to provide a technology capable of more accurately predicting energy consumption.
- An energy consumption prediction device includes past energy consumption performance data of a target facility, information specifying the date and time when the data was acquired, and operation of the target facility when the data was acquired.
- a storage unit that stores information associated with incidental information that is information related to a situation, and from the actual energy consumption data held in the storage unit, data whose incidental information matches an extraction condition specified by a user is extracted. and an extraction unit for generating prediction data to be used for prediction of energy consumption; and a prediction data generation unit for generating prediction data for energy consumption based on the prediction data and based on instructions from the user.
- a technology is provided that enables more accurate prediction of energy consumption.
- FIG. 2 is a schematic diagram of an energy consumption prediction device according to one embodiment.
- 3(a) and 3(b) are examples of screens for inputting additional information.
- FIG. 4 is an example of a screen for setting extraction conditions.
- FIG. 5 is an example of a screen for outputting extraction results and predicted values.
- FIG. 6 shows an example of a screen regarding the output of extraction results and predicted values, and is an example when a specific cluster is selected.
- FIG. 7 is a diagram showing an example of a procedure for inputting incidental information to the energy consumption prediction device.
- FIG. 8 is a diagram showing an example of a procedure for creating energy consumption prediction data.
- FIG. 9 is a diagram illustrating an example of a hardware configuration of an energy consumption prediction device;
- An energy consumption prediction device includes past energy consumption performance data of a target facility, information specifying the date and time when the data was acquired, and operation of the target facility when the data was acquired.
- a storage unit that stores information associated with incidental information that is information related to a situation, and from the actual energy consumption data held in the storage unit, data whose incidental information matches an extraction condition specified by a user is extracted. and an extraction unit for generating prediction data to be used for prediction of energy consumption; and a prediction data generation unit for generating prediction data for energy consumption based on the prediction data and based on instructions from the user.
- An energy consumption prediction method includes past energy consumption performance data of a target facility, information specifying the date and time when the data was acquired, and operation of the target facility when the data was acquired.
- Data that is stored in a storage unit in association with supplementary information that is information related to the situation, and that the supplementary information matches extraction conditions specified by a user from the actual energy consumption data held in the storage unit. is extracted to generate prediction data used to predict energy consumption; and based on the prediction data, energy consumption prediction data is generated based on an instruction from the user.
- An energy consumption prediction program includes past energy consumption performance data of a target facility, information specifying the date and time when the data was acquired, and operation of the target facility when the data was acquired.
- Data that is stored in a storage unit in association with supplementary information that is information related to the situation, and that the supplementary information matches extraction conditions specified by a user from the actual energy consumption data held in the storage unit. is extracted to generate prediction data used to predict energy consumption; and based on the prediction data, energy consumption prediction data is generated based on an instruction from the user. let the computer do it.
- the past energy consumption performance data includes information specifying the date and time when the data was acquired, and when the data was acquired. is stored in the storage unit in association with the incidental information, which is information relating to the operation status of the target facility. Then, from the data held in the storage unit, data whose incidental information matches the extraction condition specified by the user is extracted, prediction data used for prediction of energy consumption is generated, and this prediction data is used. , energy consumption prediction data is generated based on an instruction from a user. With such a configuration, for example, by designating a condition highly related to the target date for generation of energy consumption forecast data from the incidental information as an extraction condition, the more highly related data can be extracted as the forecast data. can be extracted as Therefore, it is possible to predict the energy consumption more accurately.
- a clustering unit that prepares data classified into a plurality of clusters by performing clustering processing on the data extracted by the extraction unit; It may be used as the prediction data.
- the extracted data may contain many variations.
- by classifying the data extracted by the extraction unit into a plurality of clusters by the clustering processing by the clustering unit it is possible to collect data having similar tendencies from the extracted data. Therefore, by using this data, it is possible to predict energy consumption more accurately.
- the prediction data generation unit may generate the energy consumption prediction data based on the data classified into one of the plurality of clusters based on the instruction from the user.
- Energy consumption prediction data is generated from data classified into one cluster compiled as data. In this case, energy consumption prediction data reflecting the cluster tendency is created using data classified into one cluster and having more similar tendencies.
- the prediction data generation unit creates data obtained by subjecting the prediction data to statistical processing, and generates the energy consumption prediction data based on the user's designation from the statistically processed data. good too.
- the prediction data generation unit may further include an input interface for the user to specify the details of statistical processing to be used for the energy consumption prediction data.
- the user can flexibly specify the details of the statistical processing in consideration of the usage conditions of the predicted energy consumption data. can be specified. Therefore, it is possible to accurately create energy consumption prediction data suitable for the application.
- a display unit is further provided, and the display unit displays data obtained by performing statistical processing on the prediction data as candidates for the energy consumption prediction data, and the user uses the input interface to , data to be used for the energy consumption prediction data may be selected from the candidates.
- the user can confirm the data displayed on the display unit, which is obtained by performing statistical processing on the prediction data, as a candidate for the energy consumption prediction data. Also, the user can select data to be used as energy consumption prediction data while confirming the candidates. Therefore, convenience for the user can be enhanced.
- a display unit may be further provided, and the display unit may present the incidental information corresponding to the past energy consumption performance data to the user in a time-series manner.
- the user can grasp the chronological changes in the incidental information.
- the user can also confirm whether or not additional information has been input, input of additional information by the user can be encouraged.
- the energy consumption prediction device 1 has a function of predicting the energy consumption in target equipment or the like based on a user's instruction.
- Facilities and the like (equipment/facilities) to be predicted include, for example, factories and plants.
- the energy consumption prediction device 1 predicts the energy consumption for a future target day and target time period based on the actual information on energy consumption from the energy demand measuring instrument 9.
- the energy demand measuring instrument 9 measures, for example, the total amount of energy demand such as electric power and steam in the entire target facility, and continuously transmits the result to the energy consumption prediction device 1 .
- the timing of information transmission from the energy demand measuring device 9 to the energy consumption prediction device 1 is arbitrary, and may be transmitted each time the measured value is updated, or may be transmitted periodically by providing a separate data accumulation means. A method of collectively transmitting (for example, every hour) may be adopted.
- the means of transmission may be via an intranet in the facility such as TCP/IP, or may be a system in which the information is once uploaded to a server on the Internet and then downloaded by the energy consumption prediction device.
- the information accumulated in the energy demand measuring instrument 9 may be manually transmitted to the energy consumption prediction device 1 via a storage medium such as a USB memory.
- each part of the energy consumption prediction device 1 will be described with reference to FIG.
- the following embodiment demonstrates the structure which paid its attention to the consumption of electric power as energy consumption.
- the energy consumption prediction device 1 includes, for example, a consumption record acquisition unit 11, an energy consumption record database 12, an extraction unit 13, a clustering unit 14, a statistical processing unit 15, an incidental information input unit 21, an extraction condition designation unit 22, a display switching It includes a unit 23 , a predicted value output designation unit 24 , a display unit 31 and a predicted value output unit 32 .
- the incidental information input unit 21, the extraction condition specifying unit 22, the display switching unit 23, and the predicted value output specifying unit 24 are the input interface 20 that acquires the information specified by the user by acquiring the information entered by the user.
- the display unit 31 and the predicted value output unit 32 may constitute an output interface 30 that outputs part of the information handled by the energy consumption prediction device 1 to the user.
- the actual consumption acquisition unit 11 has a function of acquiring information related to energy consumption transmitted from the energy demand measuring instrument 9 to the energy consumption prediction device 1 . Further, the consumption record acquisition unit 11 has a function of storing the acquired energy consumption record in the energy consumption record database 12, which will be described later. It also has a role of acquiring information input by the incidental information input unit 21 described later, and assigning it to the energy consumption actual database 12 in association with information related to energy consumption. Additional information will be described later.
- the actual energy consumption database 12 stores information on energy consumption (for example, actual power consumption information) for the entire target facility for each day and time zone. Additional information arbitrarily given by the user is also stored. The information held in the energy consumption record database 12 is used when predicting the energy consumption related to the future target date and target time period.
- the supplementary information input unit 21 has a function of acquiring arbitrary supplementary information that is given to the information related to the energy consumption record. It is, for example, the user of the energy consumption prediction device 1 who inputs the incidental information. Supplementary information is information that may affect the actual energy consumption.
- the additional information includes, for example, information related to the operational status of facilities, weather information, and the like.
- the extraction condition specifying unit 22 is used for extracting specific data from the information stored in the actual energy consumption database 12 when performing the process of predicting the energy consumption related to the future target day and target time period. Get the conditions (extraction conditions).
- the specification of extraction conditions is performed by, for example, the user.
- the extraction conditions may include information included in the incidental information in addition to specifying the date and time.
- the user designates, as extraction conditions, conditions similar to the target day and target time period for prediction, so that the information more suitable for the prediction target conditions is extracted from the information stored in the energy consumption performance database 12. information can be extracted.
- the extraction unit 13 has a function of extracting data related to past hourly energy consumption from the energy consumption record database 12 based on the extraction conditions acquired by the user's designation in the extraction condition specifying unit 22 .
- the extracted data can be used as prediction data on which energy consumption prediction data is based.
- the clustering unit 14 has a function of clustering the data extracted by the extraction unit 13. Clustering will be described later, but when there is a plurality of data extracted based on extraction conditions, it has a function of classifying them into clusters. Each piece of data classified into clusters by the clustering unit 14 can serve as a base for energy consumption prediction data. Note that the clustering by the clustering unit 14 is not essential, and may be configured to be performed according to a user's designation, for example.
- the statistical processing unit 15 calculates the past energy consumption by time period extracted by the extraction unit 13 and/or the past energy consumption by time period classified into clusters by the clustering unit 14. On the other hand, it has a function to calculate various statistics for each time zone. That is, the statistical processing unit 15 has a function of performing statistical processing on the prediction data prepared by the extraction unit 13 or the clustering unit 14 .
- the statistics include, for example, the average, maximum value, minimum value, ⁇ n ⁇ (standard deviation), etc. of actual energy consumption for each time period, but are not limited to these.
- the calculated statistics can be used as predictors of energy consumption.
- the display unit 31 displays the past energy consumption by time period extracted by the extraction unit 13, the past energy consumption by time period further classified by the clustering unit 14, and the time period calculated by the statistical processing unit 15. Other various statistics are displayed on the screen in a combination of graphs, tables, characters, and the like.
- the display content on the display unit 31 may be controlled by an instruction from the user acquired by the display switching unit 23 .
- the display switching unit 23 has a function of acquiring an instruction to switch/change the contents and appearance displayed on the display unit.
- An instruction regarding switching of the display content is given by, for example, the user.
- the display switching unit 23 instructs to change the content displayed by the display unit 31 based on the content instructed by the user.
- the predicted value output designation unit 24 presents the user with candidates for data to be used as predicted values, such as energy consumption by time period and various statistics displayed on the display unit 31, so that the user can make predictions. It has a function of acquiring information specifying data to be adopted as a value.
- the predicted value output designation unit 24 may be configured to present to the user buttons corresponding to sequences that the user can employ as predicted values, such as "average”, “maximum”, “minimum”, and "+1 ⁇ ". .
- the predicted value output unit 32 (predicted data generation unit) has a function of outputting data related to the predicted value of energy consumption based on the user's specification acquired by the predicted value output designation unit 24 .
- Examples of the output method include display on a screen, output to an external device/storage medium as a data file, and the like.
- An example of an output destination of the data related to the predicted value of energy consumption by the predicted value output unit 32 is a management device that manages the prediction target equipment/facilities.
- the management device serving as the output destination can adjust the amount of energy to be procured for the target equipment/facilities using the data related to the predicted energy consumption amount.
- equipment and facilities such as factories and plants where it is difficult to stop the operation, it is sometimes important to procure energy to realize stable operation. In such a case, it is possible to procure energy more appropriately by utilizing the data related to the predicted energy consumption value.
- the supplementary information input unit 21 is information that can be related to the actual energy consumption as described above.
- the incidental information includes the production volume of products manufactured in the facility on each day, the number of operations of major energy demanding equipment (equipment that consumes energy), the operating hours, and the like.
- FIG. 3A shows an example of an input screen for incidental information.
- the screen example X1 shown in FIG. 3A shows a situation in which the date "2021/1/13" is selected from the calendar and the incidental information is input for the date.
- items of supplementary information D1 to be input for the date the production volume, the number of times heat treatment furnaces 1 and 2 are operated, and the number of times steam presses 1 and 2 are operated are shown.
- the items of this incidental information may be common to each day. Also, it may be possible to set new incidental information via the new item addition button B1 as needed.
- a setting may be added for the purpose of preventing forgetting to input data for each input date.
- the user may be alerted by highlighting the dates for which no incidental information is input in color.
- FIG. 3(b) shows, as a bar graph, input values relating to the production volume for each day of January, including January 13th, selected by the user.
- a graph is displayed as shown in the example screen X2 shown in FIG. can be effectively presented to the user.
- January 17th shown in FIG. 3(b) it is also shown that the production volume is zero for non-input days. Therefore, by referring to this graph, the user can also recognize dates that may have been forgotten to be entered.
- the incidental information may be individually input by the user by presenting a screen as shown in FIG. 3(a) to the user.
- the configuration of the apparatus may become complicated, but in addition to preventing forgetting to input incidental information, etc., improvement in work efficiency can be expected.
- supplementary information in addition to information related to production, it may be possible to input external factors such as weather. Although it depends on the target facility, temperature is considered to have a significant correlation with energy consumption related to air conditioning. Therefore, by using information such as the weather, it is expected that the prediction accuracy of energy consumption will be improved.
- the weather information for example, since past results are disclosed on the Internet, this information may be automatically downloaded. In this way, the method of acquiring supplementary information is not limited to user input, and can be changed as appropriate.
- the extraction condition designation unit 22 includes date, day of the week, factory holiday information, and incidental information in order to extract hourly energy consumption data for days that are close to the date to be predicted. Then, data to be extracted is specified from the past energy consumption by time period stored in the energy consumption actual database 12 .
- a screen example X3 shown in FIG. 4 is an example of a screen for designating an extraction condition. As shown in FIG. 4, the screen for specifying the extraction conditions has items for specifying extraction conditions for each of the "date/day of the week input condition" and the "incidental information condition".
- a check box labeled "Specify” is provided in the input field so that the user can switch whether or not to use the conditions described in each line for extraction. good too. This makes it possible to easily switch the validity/invalidity of the extraction condition regardless of whether or not the item of each line is input.
- the screen example X3 shown in FIG. 4 the number of operations of the steam press 1 and the steam press 2 among the additional information is excluded from the extraction conditions. In this way, if you uncheck "Specify” (exclude from the extraction condition), you can intuitively know that the condition is not used by changing the background color of each row (for example, the "Value” column). can be expressed.
- the lower and upper limits of each incidental information in the specified period, and the number of days that match the extraction conditions specified by the user may be displayed. These numerical values can be used as reference information when the user specifies extraction conditions. In other words, the user can adjust (relax or strengthen) the extraction conditions by relying on these pieces of information.
- the screen for specifying the extraction conditions may be configured to assist the user in specifying the extraction conditions by also displaying information that the user can refer to.
- the extraction section 13 extracts data that matches the extraction conditions from the information held in the energy consumption actual database 12 . This result is displayed by the display unit 31 .
- the past energy consumption by time period extracted under the conditions specified by the user is displayed in a graph A1 with the horizontal axis representing time.
- the extracted past energy consumption by time period is drawn in a form that can specify the date.
- the hourly energy consumption from April 1st to 6th is extracted and displayed.
- "average”, "average +1 ⁇ ", and "average -1 ⁇ ” are written together.
- the statistics such as the average are obtained by the statistical processing unit 15 and are calculated from the extracted six-day data.
- Fig. 5 shows an example in which when one point in the data of "2021/4/6" is selected or moused over, supplementary information such as production volume corresponding to the date is displayed as a pop-up display A2.
- supplementary information such as production volume corresponding to the date
- the date and time, incidental information, etc. may be displayed.
- the user can individually check the relationship between each data item and the incidental information of the data item while grasping the chronological fluctuation of the actual consumption amount as the graph A1.
- the graph A1 also shows the average of the energy consumption for the time period and the series of the average ⁇ n ⁇ .
- n is a coefficient related to standard deviation.
- the screen example X4 as an example of a component of the display switching unit 23, a coefficient n frame A3 for the standard deviation is provided, and a slider capable of changing n is provided in this frame.
- the statistic displayed in the graph A1 may be configured to display "average value ⁇ n ⁇ " calculated using n according to the position of the slider. In this manner, the display content displayed on the graph A ⁇ b>1 by the display unit 31 may be changed based on the calculation result by the statistical processing unit 15 according to the position of the slider functioning as the display switching unit 23 .
- the display switching unit 23 may be configured to automatically update the graph A1 by reflecting the operation of the slider in the n-frame A3, which is the coefficient for the standard deviation.
- the screen example X4 shows an automatic clustering result frame A4 as another element of the display switching unit 23.
- the number of constituent data of the clusters (clusters 1 and 2) generated by the clustering unit 14, the average standard for all time in each cluster Deviation values are indicated.
- the clustering process is a process of classifying the actual consumption data extracted according to the extraction conditions into a plurality of clusters.
- the actual consumption amount data used for predicting the consumption amount is extracted by setting various extraction conditions by the user.
- the conditions set by the user are not appropriate, such as a wide range of conditions, if the user does not set specific extraction setting conditions, or if the conditions are not assumed by the energy consumption prediction device 1 in the first place, If the data changes greatly depending on the data, all the extracted data may not show the same tendency, and there is a possibility that bias may occur.
- the existence of bias in the multiple extracted actual consumption data and the existence of each classified cluster can be presented to the user.
- the algorithm used for clustering processing there are no particular restrictions on the algorithm used for clustering processing, but for example, the k-means method, which is an unsupervised machine learning method, can be used.
- the k-means method which is an unsupervised machine learning method
- a vector that summarizes the daily energy consumption by time period and each incidental information is considered and clustered.
- 24 points are set for each hour of the day, and additional information includes production volume, number of heat treatment furnace 1 operations, number of heat treatment furnace 2 operations, number of steam press 1 operations, and number of steam press 2 operations.
- Cluster classification is performed by repeatedly calculating the classification using the center of gravity of the cluster and the movement of the center of gravity from the vector of each data thus obtained.
- preprocessing (such as normalization of the range of values) may be performed as necessary. Also, it is necessary to specify the number of clusters when executing the k-means method.
- the number of clusters may be a program parameter, or may be determined by the user each time. Alternatively, the number of clusters may be determined in consideration of the degree of distribution of the extracted data. Considering the interpretability of the results, the number of clusters may be about 2 to 3.
- Two clusters 1 and 2 are shown in the automatic clustering result frame A4 shown in FIG.
- the graph A1 may be redrawn so that only the hourly energy consumption data of the selected cluster is displayed.
- Screen example X5 shown in FIG. 6 shows a state in which cluster 1 is selected in automatic clustering result frame A4 for screen example X4.
- graph A1 shows three data (April 1 to 3) classified into cluster 1 and the results related to the average and average ⁇ 1 ⁇ . there is In this way, when the user instructs to display the clusters obtained as a result of the clustering process, the display content displayed on the graph A1 by the display unit 31 is based on the calculation result by the statistical processing unit 15 in accordance with the user's instruction. may be changed.
- the results of clustering by the clustering unit 14 are particularly effective when the data varies due to elements not included in the extraction conditions specified by the user.
- the user can, for example, use only the data included in a specific cluster after confirming that the incidental information of the data forming the cluster matches the situation of the target date. can be used to determine the hourly energy consumption forecast value for the target day.
- clustering can eliminate the variation in the data to some extent, making it possible to create data to be used for prediction. .
- the example of the display switching unit 23 is not limited to that shown in the screen example X4 in FIG.
- the display switching unit 23 may be provided with various functions for increasing the visibility of the graph, for example, a function capable of expanding/reducing/changing the scale of the graph and switching between display/non-display of a specific series.
- the display example X4 in FIG. 5 includes a display value output frame A5 corresponding to the predicted value output designation section 24.
- a group of buttons is provided for outputting, with one click, the energy consumption forecast value for each time period for the target day from the statistics of the displayed series.
- “average”, “minimum”, “maximum”, “average+n ⁇ ”, and “average ⁇ n ⁇ ” are provided.
- the predicted value output unit 32 outputs the corresponding hourly energy consumption as a predicted value.
- the output destination may be on the screen or a file. Alternatively, it may be configured to be recorded in the main memory of the computer on the premise that it will be linked with other programs.
- buttons or the like different from the above buttons shown in FIG. 5 may be set in the display value output frame A5.
- the data of a specific date, among the extracted actual energy consumption data, is used as it is as the predicted energy consumption amount, the data can be output as the predicted value.
- the configuration or the like of the predicted value output designation unit 24 may be changed so that it becomes possible. That is, the type of data to be output as energy consumption prediction data is not limited to the data after statistical processing illustrated in the display value output frame A5, and any of the prediction data can be used as energy consumption prediction data. good too.
- FIG. 7 shows a procedure for inputting incidental information to the energy consumption prediction device 1
- FIG. 8 shows a procedure for creating energy consumption prediction data.
- a procedure for inputting incidental information to the energy consumption prediction device 1 will be described with reference to FIG. First, as a premise, it is assumed that performance data related to energy consumption is transmitted from the energy demand measuring device 9 to the energy consumption prediction apparatus 1 and stored in the energy consumption performance database 12 . This is the procedure when additional information is added by the user or the like.
- the user activates the energy consumption prediction device 1 (step S01).
- the user inputs additional conditions corresponding to the actual energy consumption data through the additional information input unit 21 of the input interface 20 (step S02). After that, the user terminates the energy consumption prediction device 1 (step S03).
- a procedure for generating energy consumption prediction data for an estimation target day using the energy consumption prediction device 1 will be described with reference to FIG. First, as a premise, it is assumed that the actual energy consumption database 12 of the energy consumption prediction device 1 stores data in a state in which the above-mentioned actual energy consumption data is associated with incidental information.
- the user activates the energy consumption prediction device 1 (step S11).
- the user sets extraction conditions for generating energy consumption prediction data for the target day using the extraction condition designating section 22 of the input interface 20 (step S12).
- step S13 the extraction unit 13 of the energy consumption prediction device 1 extracts actual consumption data necessary for creating prediction value data.
- the clustering unit 14 clusters the actual consumption data extracted as necessary based on preset conditions.
- the statistical processing unit 15 performs statistical processing on the extracted actual consumption data and data classified by clustering, and calculates statistical data such as average, average ⁇ n ⁇ , maximum, and minimum. These data are displayed by the display unit 31 .
- the user can confirm the extracted data, the statistical processing results thereof, and the like.
- the user may operate the display switching unit 23 to perform an operation such as changing the display content on the display unit 31 .
- the generation of prediction data in the extraction unit 13 and the clustering unit 14 and the statistical processing of the prediction data in the statistical processing unit 15 are performed simultaneously.
- generation of prediction data and statistical processing may be performed at the same time.
- the statistical processing by the statistical processing unit 15 may be repeatedly performed according to the user's instruction until the user finally determines the data to be output as the energy consumption prediction data (step S14).
- the user instructs the generation of predicted value data to be output using the predicted value output designation unit 24 of the input interface 20 (step S14).
- the designation by the predicted value output designation unit 24 is performed, for example, by the user operating the display value output frame A5 of the screen example X4.
- the predicted value output unit 32 of the energy consumption prediction device 1 creates and outputs predicted value data.
- the user terminates the energy consumption prediction device 1 (step S15).
- FIG. 9 is a diagram showing an example of the hardware configuration of the energy consumption prediction device 1.
- Energy consumption prediction device 1 includes one or more computers 100 .
- the computer 100 has a CPU (Central Processing Unit) 101 , a main memory section 102 , an auxiliary memory section 103 , a communication control section 104 , an input device 105 and an output device 106 .
- the energy consumption prediction device 1 is configured by one or more computers 100 configured by these hardware and software such as programs.
- the energy consumption prediction device 1 When the energy consumption prediction device 1 is composed of a plurality of computers 100, these computers 100 may be connected locally or via a communication network such as the Internet or an intranet. This connection logically constructs one energy consumption prediction device 1 .
- the CPU 101 executes an operating system, application programs, and the like.
- the main storage unit 102 is composed of ROM (Read Only Memory) and RAM (Random Access Memory).
- the auxiliary storage unit 103 is a storage medium configured by a hard disk, flash memory, or the like. Auxiliary storage unit 103 generally stores a larger amount of data than main storage unit 102 . At least a part of each unit constituting energy consumption prediction device 1 is implemented by auxiliary storage unit 103 .
- the communication control unit 104 is composed of a network card or a wireless communication module. At least a part of each unit constituting energy consumption prediction device 1 may be realized by communication control unit 104 .
- the input device 105 includes a keyboard, mouse, touch panel, voice input microphone, and the like.
- the output device 106 is composed of a display, a printer, and the like. At least part of the output unit 19 is realized by the output device 106 .
- the output device 106 may display the predicted value data and the like output by the output interface 30 on a display or the like.
- the auxiliary storage unit 103 stores the program 110 and data necessary for processing in advance.
- the program 110 causes the computer 100 to execute each functional element of the energy consumption prediction device 1 .
- the program 110 causes the computer 100 to perform, for example, the processes from step S01 to step S04 described above.
- the program 110 is read by the CPU 101 or the main storage unit 102 and causes at least one of the CPU 101, the main storage unit 102, the auxiliary storage unit 103, the communication control unit 104, the input device 105, and the output device 106 to operate.
- the program 110 reads and writes data in the main storage unit 102 and auxiliary storage unit 103 .
- the program 110 may be provided after being recorded on a tangible recording medium such as a CD-ROM, DVD-ROM, or semiconductor memory. Program 110 may be provided as a data signal over a communications network.
- the past energy consumption actual data includes information specifying the date and time when the data was acquired, and The data is stored in the storage unit in association with additional information, which is information related to the operating status of the target facility at the time. Then, from the data held in the storage unit, data whose incidental information matches the extraction condition specified by the user is extracted, prediction data used for prediction of energy consumption is generated, and this prediction data is used. , energy consumption prediction data is generated based on an instruction from a user.
- the clustering unit 14 may further include a clustering unit 14 that prepares data classified into a plurality of clusters by clustering the data extracted by the extraction unit 13 .
- the statistical processing unit 15 and the prediction value output unit 32 as the prediction data generation unit may also use data classified into a plurality of clusters as prediction data. Data having similar tendencies can be grouped together from data extracted by clustering processing by the clustering unit 14 . Therefore, by using this data, it is possible to predict energy consumption more accurately.
- the predicted data generation unit may generate predicted energy consumption data based on data classified into one of a plurality of clusters based on instructions from the user.
- the energy consumption prediction data is generated from the extracted data classified into one cluster as data having a similar tendency.
- energy consumption forecast data that reflects the tendency of the cluster is created using data that has been classified into one cluster and has more similar tendencies.
- the statistical processing unit 15 and the prediction value output unit 32 functioning as a prediction data generation unit create data obtained by subjecting the prediction data to statistical processing, and from the statistically processed data, energy is calculated based on the user's designation. Consumption forecast data may be generated. By creating data obtained by subjecting the prediction data to statistical processing, data reflecting the characteristics of the data included in this prediction data is generated as energy consumption prediction data.
- it may have an input interface 20 for the user to specify the content of the statistical processing to be used for the energy consumption prediction data.
- the user may flexibly specify the details of the statistical processing in consideration of the usage conditions of the predicted energy consumption data. can be specified. Therefore, it is possible to accurately create energy consumption prediction data suitable for the application.
- a display unit 31 may be provided, and the display unit 31 may display data obtained by performing statistical processing on the prediction data as candidates for energy consumption prediction data. Also, the user may use the input interface 20 to select data to be used for the energy consumption prediction data from among the candidates. With this configuration, the user can confirm the data obtained by statistically processing the prediction data displayed on the display unit 31 as candidates for the energy consumption prediction data. Also, the user can select data to be used as energy consumption prediction data while confirming the candidates. Therefore, convenience for the user can be enhanced.
- a display unit 31 may be further provided, and the display unit 31 may present supplementary information corresponding to the past energy consumption performance data to the user in a time-series correspondence, as in the screen example X2. .
- the user can grasp the chronological change of the incidental information.
- the user can also confirm whether or not additional information has been input, input of additional information by the user can be encouraged.
- the graph A1 or the like displayed in the screen example X4 may also be configured to simultaneously display information on a plurality of types of energy. Further, for example, when prediction is made for two energies of electric power and steam, these graphs may be displayed side by side, or the two graphs may be switched by a button or the like.
- the screen example shown in the above embodiment is merely an example, and can be flexibly changed according to the prediction target, actual consumption data, additional information, and the like.
- energy to which the present disclosure can be applied may be energy that can be directly used as motive power, such as the above-mentioned electric power or steam, or substances that can be converted into or converted from these.
- energy include water and hydrogen.
- fuels synthesized from hydrogen such as methane and ammonia are also included in energy in the present disclosure.
- equipment/facilities that are targets of energy consumption prediction by the energy consumption prediction apparatus 1 described in the above embodiments consume and generate a lot of energy, such as factories and plants described in the above embodiments. It is optional as long as it is handled.
- Such equipment/facilities may be, for example, equipment/facilities that manufacture hydrogen, methane, ammonia, or the like according to demand.
- the energy devices (devices that handle energy) in such target equipment/facility do not necessarily have to be physically close to each other. For example, when a facility that produces hydrogen based on photovoltaic power is the target of energy consumption prediction, the hydrogen production facility and the photovoltaic power generation facility may be located separately.
- the time period corresponding to energy consumption is not limited to one hour. For example, 30 minutes, which is the reference for simultaneous power supply and demand equalization control, may be set as one time period. Alternatively, the forecast may be made for one week (seven days) with one day as one time period.
- the configuration described in the above embodiment may be incorporated as one function of the energy management system.
- the operation plan of the energy equipment may be optimized based on the predicted energy consumption obtained by the method described in the above embodiment.
- the predicted value of energy consumption is input to the energy management system, and based on this predicted value of energy consumption, a power generation plan for power generation equipment managed by the energy management system, a charge/discharge plan for storage equipment, etc. It is good also as a structure which changes. As a result, it is possible to realize control using a highly accurate energy consumption amount prediction value in the energy management system.
- the energy consumption prediction value obtained in the energy consumption prediction device 1, or the operation plan of the energy management system calculated based on the energy consumption prediction value can be transmitted from this device to other energy devices (storage batteries, gas turbogenerator, boiler, etc.).
- the destination energy device may change the control content based on the predicted energy consumption value or the operation plan.
- Fossil fuels such as gas turbine generators, are often used to adjust forecast errors in operation plans for energy equipment. There is a need. This is not a desirable operation from the viewpoint of power generation efficiency, and may lead to an increase in the unit cost of power generation and an increase in CO2 emissions. Therefore, this disclosure is not only related to the economic efficiency and business profits of microgrids, but also to the economic energy supply and environmental load reduction of society as a whole. ), Goal 7 “Ensure access to affordable, reliable, sustainable and modern energy for all” and Goal 13 “Take urgent action to combat climate change and its impacts”. is.
- the present disclosure includes the following configurations.
- [1] Correlation of past energy consumption performance data of the target facility with information specifying the date and time when the data was acquired and supplementary information that is information related to the operation status of the target facility when the data was acquired a storage unit that holds Extraction for generating prediction data used for prediction of energy consumption by extracting data whose incidental information matches extraction conditions specified by a user from the actual energy consumption data held in the storage unit.
- Department and a predicted data generation unit that generates predicted energy consumption data based on the prediction data and based on an instruction from the user;
- An energy consumption prediction device An energy consumption prediction device.
- [2] further comprising a clustering unit that prepares data classified into a plurality of clusters by clustering the data extracted by the extraction unit;
- the energy consumption prediction device according to [1], wherein the prediction data generator also uses the data classified into the plurality of clusters as the prediction data.
- the prediction data generation unit generates the energy consumption prediction data based on the data classified into one of the plurality of clusters based on an instruction from the user; Energy consumption prediction device as described.
- the prediction data generation unit creates data obtained by subjecting the prediction data to statistical processing, and generates the energy consumption prediction data based on the user's designation from the statistically processed data.
- the energy consumption prediction device according to any one of [1] to [3].
- the energy consumption prediction device according to [4], further comprising an input interface for a user to specify details of statistical processing to be used for the energy consumption prediction data in the prediction data generation unit.
- [6] further having a display unit;
- the display unit displays data obtained by performing statistical processing on the prediction data as candidates for the energy consumption prediction data,
- the energy consumption prediction device according to [5], wherein the user selects data to be used for the energy consumption prediction data from among the candidates using the input interface.
- [7] further having a display unit;
- Quantity predictor is
- a method for predicting energy consumption comprising: [9] Correlation of past energy consumption performance data of the target facility with information specifying the date and time when the data was acquired and supplementary information that is information related to the operation status of the target facility when the data was acquired.
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Abstract
Description
まず、図1および図2を参照して、一実施形態に係るエネルギー消費量予測装置1の概略構成について説明する。一実施形態に係るエネルギー消費量予測装置1は、ユーザ(使用者)の指示に基づいて、対象となる設備等におけるエネルギーの使用量を予測する機能を有する。予測の対象となる設備等(設備・施設)とは、例えば、工場、プラント等が挙げられる。
入力インタフェース20に含まれる付帯情報入力部21、抽出条件指定部22、表示切替部23、予測値出力指定部24と、出力インタフェース30に含まれる表示部31、予測値出力部32に関して、具体的な画面例を参照しながらさらに説明する。
付帯情報入力部21は、上述のように、エネルギー消費量の実績と関連し得る情報である。具体的には、付帯情報としては、各日における施設で製造する製造物の生産量や、主要なエネルギー需要機器(エネルギーを消費する設備)の稼働回数、稼働時間等が挙げられる。図3(a)では、付帯情報の入力画面の一例を示している。図3(a)に示す画面例X1では、カレンダーから「2021/1/13」の日付を選択し、当該日付に対して付帯情報を入力している状況を示している。また、当該日付に対して入力する付帯情報D1の項目として、生産量、熱処理炉1,2の稼働回数および蒸気プレス1,2の稼働回数が示されている。この付帯情報の項目は各日に対して共通であってもよい。また、必要に応じて新規項目追加ボタンB1を介してあらたな付帯情報を設定する可能な構成としてもよい。
抽出条件指定部22では、予測対象となる日付と状況が近い日の時間帯別エネルギー消費量データを抽出するため、日付・曜日・工場休業日情報や付帯情報をもとに、エネルギー消費量実績データベース12に記憶された過去の時間帯別エネルギー消費量から、抽出対象となるデータを特定する。図4に示す画面例X3は、抽出条件を指定する画面の一例である。図4に示すように、抽出条件を指定する画面では、「日付・曜日入力条件」と「付帯情報条件」のそれぞれについて、抽出の条件を指定する項目を設けている。
抽出条件の設定が行われると、エネルギー消費量実績データベース12において保持される情報から、抽出部13によって抽出条件に合致するデータが抽出される。この結果は、表示部31によって表示される。図5に示す画面例X4は、表示部31によって表示される画面の一例を示している。なお、画面例X4では、クラスタリング部14によるクラスタリングおよび統計処理部15による統計処理の結果も併せて表示している。
次に、図7および図8を参照しながら、エネルギー消費量予測装置1によるエネルギー消費量予測方法について説明する。図7は、エネルギー消費量予測装置1に対して付帯情報を入力する際の手順であり、図8は、エネルギー消費量予測データを作成する際の手順である。
図9を参照して、エネルギー消費量予測装置1のハードウェア構成について説明する。図9は、エネルギー消費量予測装置1のハードウェア構成の一例を示す図である。エネルギー消費量予測装置1は、1または複数のコンピュータ100を含む。コンピュータ100は、CPU(Central Processing Unit)101と、主記憶部102と、補助記憶部103と、通信制御部104と、入力装置105と、出力装置106とを有する。エネルギー消費量予測装置1は、これらのハードウェアと、プログラム等のソフトウェアとにより構成された1または複数のコンピュータ100によって構成される。
上記のエネルギー消費量予測装置1、エネルギー消費量予測方法およびエネルギー消費量予測プログラムによれば、過去のエネルギー消費量実績データが、当該データを取得した日時を特定する情報と、当該データを取得した際の対象施設の運転状況に係る情報である付帯情報と対応付けて記憶部において保持される。そして、記憶部において保持されるデータから、付帯情報がユーザの指定する抽出条件に合致するデータが抽出され、エネルギー消費量の予測に使用する予測用データが生成され、この予測用データを用いて、ユーザからの指示に基づいてエネルギー消費量予測データが生成される。このような構成とすることで、付帯情報の中から、例えば、エネルギー消費量予測データの生成の対象日と関連の高い条件を抽出条件として指定することで、より関連の高いデータが予測用データとして抽出され得る。したがって、エネルギー消費量の予測をより精度よく行うことが可能となる。
以上、本開示は必ずしも上述した実施形態に限定されるものではなく、その要旨を逸脱しない範囲で様々な変更が可能である。
エネルギー機器の運転計画の予測誤差に対しては、ガスタービン発電機などの化石燃料を調整しろとして用いる場合が多い、ただしその際には上げ・下げ両方に余裕を持たせた部分出力運転とする必要がある。これは発電効率の観点からは望ましい運転ではなく、発電単価の上昇、CO2排出量増加などを招きうる.よって本開示はマイクログリッドの経済性や事業収益のみに係るものではなく、社会全体としての経済的なエネルギー供給や環境負荷低減にも関わるものであり、国連が主導する持続可能な開発目標(SDGs)の目標7「すべての人々の、安価かつ信頼できる持続可能な近代的エネルギーへのアクセスを確保する」及び目標13「気候変動及びその影響を軽減するための緊急対策を講じる」に貢献するものである。
本開示は、以下の構成を含む。
[1]対象施設の過去のエネルギー消費量実績データを、当該データを取得した日時を特定する情報と、当該データを取得した際の前記対象施設の運転状況に係る情報である付帯情報と対応付けて保持する記憶部と、
前記記憶部において保持される前記エネルギー消費量実績データから、前記付帯情報が、ユーザの指定する抽出条件に合致するデータを抽出して、エネルギー消費量の予測に使用する予測用データを生成する抽出部と、
前記予測用データに基づいて、前記ユーザからの指示に基づいてエネルギー消費量予測データを生成する、予測データ生成部と、
を有する、エネルギー消費量予測装置。
[2]前記抽出部が抽出したデータに対してクラスタリング処理を行うことによって、複数のクラスタに分類したデータを準備するクラスタリング部をさらに有し、
前記予測データ生成部は、前記複数のクラスタに分類したデータも前記予測用データとして利用する、[1]に記載のエネルギー消費量予測装置。
[3]前記予測データ生成部は、前記ユーザからの指示に基づいて、前記複数のクラスタのうちの1つに分類したデータに基づいて、前記エネルギー消費量予測データを生成する、[2]に記載のエネルギー消費量予測装置。
[4]前記予測データ生成部は、前記予測用データに対して統計処理を施したデータを作成し、統計処理を施したデータから、前記ユーザの指定に基づいて前記エネルギー消費量予測データを生成する、[1]~[3]のいずれかに記載のエネルギー消費量予測装置。
[5]前記予測データ生成部において前記エネルギー消費量予測データに使用する統計処理の内容をユーザが指定するための入力インタフェースをさらに有する、[4]に記載のエネルギー消費量予測装置。
[6]表示部をさらに有し、
前記表示部は、前記予測用データに対して統計処理を施したデータを、前記エネルギー消費量予測データの候補として表示し、
前記ユーザは、前記入力インタフェースを利用して、前記候補の中から前記エネルギー消費量予測データに使用するデータを選択する、[5]に記載のエネルギー消費量予測装置。
[7]表示部をさらに有し、
前記表示部は、前記過去のエネルギー消費量実績データに対応する付帯情報を、時系列に対応させた状態でユーザに対して提示する、[1]~[6]のいずれかに記載のエネルギー消費量予測装置。
[8]対象施設の過去のエネルギー消費量実績データを、当該データを取得した日時を特定する情報と、当該データを取得した際の前記対象施設の運転状況に係る情報である付帯情報と対応付けて記憶部に保持することと、
前記記憶部において保持される前記エネルギー消費量実績データから、前記付帯情報が、ユーザの指定する抽出条件に合致するデータを抽出して、エネルギー消費量の予測に使用する予測用データを生成することと、
前記予測用データに基づいて、前記ユーザからの指示に基づいてエネルギー消費量予測データを生成することと、
を含む、エネルギー消費量予測方法。
[9]対象施設の過去のエネルギー消費量実績データを、当該データを取得した日時を特定する情報と、当該データを取得した際の前記対象施設の運転状況に係る情報である付帯情報と対応付けて記憶部に保持することと、
前記記憶部において保持される前記エネルギー消費量実績データから、前記付帯情報が、ユーザの指定する抽出条件に合致するデータを抽出して、エネルギー消費量の予測に使用する予測用データを生成することと、
前記予測用データに基づいて、前記ユーザからの指示に基づいてエネルギー消費量予測データを生成することと、
をコンピュータに実行させる、エネルギー消費量予測プログラム。
11 消費実績取得部
12 エネルギー消費量実績データベース(記憶部)
13 抽出部
14 クラスタリング部
15 統計処理部(予測データ生成部)
20 入力インタフェース
21 付帯情報入力部
22 抽出条件指定部
23 表示切替部
24 予測値出力指定部
30 出力インタフェース
31 表示部
32 予測値出力部
Claims (9)
- 対象施設の過去のエネルギー消費量実績データを、当該データを取得した日時を特定する情報と、当該データを取得した際の前記対象施設の運転状況に係る情報である付帯情報と対応付けて保持する記憶部と、
前記記憶部において保持される前記エネルギー消費量実績データから、前記付帯情報が、ユーザの指定する抽出条件に合致するデータを抽出して、エネルギー消費量の予測に使用する予測用データを生成する抽出部と、
前記予測用データに基づいて、前記ユーザからの指示に基づいてエネルギー消費量予測データを生成する、予測データ生成部と、
を有する、エネルギー消費量予測装置。 - 前記抽出部が抽出したデータに対してクラスタリング処理を行うことによって、複数のクラスタに分類したデータを準備するクラスタリング部をさらに有し、
前記予測データ生成部は、前記複数のクラスタに分類したデータも前記予測用データとして利用する、請求項1に記載のエネルギー消費量予測装置。 - 前記予測データ生成部は、前記ユーザからの指示に基づいて、前記複数のクラスタのうちの1つに分類したデータに基づいて、前記エネルギー消費量予測データを生成する、請求項2に記載のエネルギー消費量予測装置。
- 前記予測データ生成部は、前記予測用データに対して統計処理を施したデータを作成し、統計処理を施したデータから、前記ユーザの指定に基づいて前記エネルギー消費量予測データを生成する、請求項1~3のいずれか一項に記載のエネルギー消費量予測装置。
- 前記予測データ生成部において前記エネルギー消費量予測データに使用する統計処理の内容をユーザが指定するための入力インタフェースをさらに有する、請求項4に記載のエネルギー消費量予測装置。
- 表示部をさらに有し、
前記表示部は、前記予測用データに対して統計処理を施したデータを、前記エネルギー消費量予測データの候補として表示し、
前記ユーザは、前記入力インタフェースを利用して、前記候補の中から前記エネルギー消費量予測データに使用するデータを選択する、請求項5に記載のエネルギー消費量予測装置。 - 表示部をさらに有し、
前記表示部は、前記過去のエネルギー消費量実績データに対応する付帯情報を、時系列に対応させた状態でユーザに対して提示する、請求項1~3のいずれか一項に記載のエネルギー消費量予測装置。 - 対象施設の過去のエネルギー消費量実績データを、当該データを取得した日時を特定する情報と、当該データを取得した際の前記対象施設の運転状況に係る情報である付帯情報と対応付けて記憶部に保持することと、
前記記憶部において保持される前記エネルギー消費量実績データから、前記付帯情報が、ユーザの指定する抽出条件に合致するデータを抽出して、エネルギー消費量の予測に使用する予測用データを生成することと、
前記予測用データに基づいて、前記ユーザからの指示に基づいてエネルギー消費量予測データを生成することと、
を含む、エネルギー消費量予測方法。 - 対象施設の過去のエネルギー消費量実績データを、当該データを取得した日時を特定する情報と、当該データを取得した際の前記対象施設の運転状況に係る情報である付帯情報と対応付けて記憶部に保持することと、
前記記憶部において保持される前記エネルギー消費量実績データから、前記付帯情報が、ユーザの指定する抽出条件に合致するデータを抽出して、エネルギー消費量の予測に使用する予測用データを生成することと、
前記予測用データに基づいて、前記ユーザからの指示に基づいてエネルギー消費量予測データを生成することと、
をコンピュータに実行させる、エネルギー消費量予測プログラム。
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