Power estimation device and power estimation method

Abstract

To provide a power estimation device that can estimate power consumption that reflects the operating status of equipment according to the work process. [Solution] The power estimation device according to the present invention comprises a calculation unit that calculates power consumption data relating to the power consumed in power utilization equipment based on pre-generated master data, and an estimation unit that estimates the difference between supply power data relating to the power supplied from the power grid to the power utilization equipment and the power consumption data as unused power data, wherein the master data stores data measuring the power consumption per predetermined time for each of the power utilization equipment.

Description

Technical Field

[0001] The present invention relates to a power estimation device and a power estimation method.

Background Art

[0002] Techniques for grasping the power consumption at the factory or line level are known. Patent Document 1 describes a technique for estimating energy information generated in production equipment within a predetermined period using a detection signal indicating the operating state of the production equipment.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the technique described in Patent Document 1, the operating state of the production equipment is determined by a retrospectively installed detection device. Therefore, when there is a standby time of the equipment within the process, the power consumption during the standby time is not necessarily required from the perspective of calculating the CFP (Carbon Footprint of Products) value, which is a value used for tracking the carbon footprint. Therefore, it is not always possible to calculate the CFP value of the equipment reflecting the work process.

[0005] An object of the present invention is to provide a power estimation device that can estimate power consumption reflecting the operating status of equipment according to the work process.

Means for Solving the Problems

[0006] The power estimation device according to the present invention comprises a calculation unit that calculates power consumption data relating to the power consumed in power utilization equipment based on pre-generated master data, and an estimation unit that estimates the difference between supply power data relating to the power supplied from the power grid to the power utilization equipment and the power consumption data as unused power data, wherein the master data stores data measuring the power consumption per predetermined time for each of the power utilization equipment. [Effects of the Invention]

[0007] The present invention provides a power estimation device that can estimate power consumption that reflects the operating status of equipment according to the work process. [Brief explanation of the drawing]

[0008] [Figure 1] This figure shows a schematic configuration of a power supply system including a power estimation device according to one embodiment of the present invention. [Figure 2] This is a block diagram showing the functional configuration of a power estimation device according to one embodiment of the present invention. [Figure 3] This figure shows an example of master data in a power estimation device according to one embodiment of the present invention. [Figure 4] This is a diagram illustrating unused power data related to one embodiment of the present invention. [Figure 5] This diagram shows the flow of a power estimation method performed by a power estimation device according to one embodiment of the present invention. [Figure 6] This diagram shows the flow of a power estimation method performed by a power estimation device according to one embodiment of the present invention. [Modes for carrying out the invention]

[0009] The embodiments will be described below with reference to the drawings. Note that the drawings are simplified, and the technical scope of the embodiments should not be narrowly interpreted based on their depiction. Furthermore, the same elements are denoted by the same reference numerals, and redundant explanations are omitted. Also, in the following embodiments, when referring to the number of elements (including quantity, numerical value, amount, range, etc.), unless specifically stated or clearly limited to a particular number in principle, the number is not limited to that particular number and may be greater than or less than that number.

[0010] Furthermore, in the following embodiments, the components are not necessarily essential unless otherwise explicitly stated or considered to be clearly essential in principle. Similarly, in the following embodiments, when referring to the shape, positional relationship, etc., of the components, etc., it shall include those that substantially approximate or resemble their shape, etc., unless otherwise explicitly stated or considered to be clearly not essential in principle. The same applies to the numbers, etc. (including the number of items, numerical values, quantities, ranges, etc.).

[0011] [Embodiment] <Configuration of power estimation device 10> Figure 1 is a diagram showing a schematic configuration of a power supply system including a power estimation device 10 according to one embodiment of the present invention. As shown in the figure, a branch line 1 of the high-voltage power line of the power grid is brought in via a transformer 2 and connected to the main line 4 via a main line switch 3 included in the main line distribution board 5.

[0012] The main line 4 is branched into multiple circuits to supply power to a work environment such as a factory, and these circuits are housed in a main line distribution board 5. A distribution board 7 is provided for each power-using piece of equipment 6. The distribution board 7 includes a main circuit breaker connected to the main line 4. The secondary side of the main circuit breaker is branched and connected to each power-using piece of equipment 6. The distribution board 7 may be equipped with current sensors to measure the current values ​​of the branch circuits.

[0013] A monitoring device 8 and a management device 9 are connected to each power utilization equipment 6. The monitoring device 8 and the management device 9 are connected to a power estimation device 10. The power estimation device 10 is configured to be communicable with an external device via a network. The external device is, for example, a terminal having a communication function such as a smartphone or an IoT (Internet of Things) device, and a server in the cloud, etc.

[0014] The monitoring device 8 is, for example, a device called a so-called Andon computer that acquires the operation information of a plurality of equipment devices. The monitoring device 8 accumulates the number of operations of each power utilization equipment 6 based on the operation information of the plurality of power utilization equipment 6 and transmits it to the power estimation device 10. The monitoring device 8 monitors in real time the operation status of the power utilization equipment 6 and the number of products such as vehicles manufactured by the power utilization equipment 6, and transmits it to the power estimation device 10.

[0015] In addition, when the number of operations determined for each power utilization equipment 6 is exceeded, the monitoring device 8 may transmit an alarm to another device. The other device is, for example, a display device such as a so-called Andon indicator that can receive an alarm from the monitoring device 8.

[0016] The management device 9 manages product identification information including the type of products manufactured by the power utilization equipment 6. The management device 9, for example, transmits the product identification information of the products manufactured by the power utilization equipment 6 to the power estimation device 10.

[0017] The power estimation device 10 includes a CPU (Central Processing Unit), a ROM (Read Only Memory), a RAM (Random Access Memory), a HDD (Hard Disk Drive), and an input / output I / F (Interface) as its hardware components. These are electrically connected to each other via a bus. The CPU controls the operation of the power estimation device 10. The ROM stores programs and the like executed by the CPU. The RAM is used as the work space of the CPU. The HDD stores various data such as programs. The input / output I / F is an interface for performing input / output of various signals and data with external devices.

[0018] FIG. 2 is a block diagram showing the functional configuration of the power estimation device 10 according to an embodiment of the present invention. As shown in the figure, the power estimation device 10 includes a calculation unit 11 and an estimation unit 12. The power estimation device 10 also stores master data 20.

[0019] The calculation unit 11 calculates power consumption data regarding the power consumed in the power utilization equipment 6 based on the master data 20 generated in advance. The power consumption data is the total of the power values consumed for manufacturing products for each power utilization equipment 6.

[0020] The master data 20 is generated in advance when calculating the power consumption data by the calculation unit 11. The master data 20 stores data obtained by measuring the power consumption per predetermined time for each power utilization equipment 6. That is, the data stored in the master data 20 indicates which power utilization equipment 6 manufactured which type of product with what power consumption.

[0021] In addition, the master data 20 stores data obtained by measuring the power consumption per predetermined time for each product to be manufactured for each power utilization equipment 6. The predetermined time may be, for example, 1 second, but is not limited thereto and may be any time. The power consumption for generating the master data 20 may be measured by a current sensor provided in the distribution board 7.

[0022] The power consumption for generating the master data 20 is measured in advance using a portable measuring device that can be carried by the user. The portable measuring device is housed in, for example, a portable enclosure. The enclosure may have wheels on the bottom. The enclosure also houses, for example, a power measuring device, a power supply, a wireless communication device, and a wired communication device.

[0023] Furthermore, an application program may be used to generate the master data 20. The user inputs the product model number and other information into the application program. The application program generates the master data 20 based on the product model number, the operating information of the power utilization equipment 6 obtained from the monitoring device 8, the product identification information of the currently manufactured product obtained from the management device 9, and the measured power consumption. The application program may be stored in the power estimation device 10, or it may be stored in a user's terminal device that can communicate with the power estimation device 10.

[0024] Figure 3 shows an example of master data 20 in a power estimation device 10 according to one embodiment of the present invention. The master data 20 is generated for each power-using equipment 6 and is associated with the model of the product to be manufactured and the power consumption per predetermined time.

[0025] Furthermore, the power consumption per predetermined time is, for example, the average power consumption obtained by dividing the power consumption by the operating time. The master data 20 may be data generated for each measured time, as shown in the figure. The master data 20 may include various types of data, not limited to the example shown.

[0026] In Figure 2, the estimation unit 12 estimates the difference between the power supply data and the power consumption data related to the power supplied from the power grid to the power utilization equipment 6 as unused power data. Unused power data includes power consumption during at least the standby time in the product manufacturing process.

[0027] When the calculation unit 11 calculates power consumption data using the master data 20 and the estimation unit 12 estimates unused power data, operational information obtained from the monitoring device 8 is used. The operational information includes information on the operating time and non-operating time of the power utilization equipment 6. The unused power data estimated by the estimation unit 12 is data on power that is not directly used in the manufacture of the product, such as standby power, power outside of operating hours, and power consumed by equipment other than the power utilization equipment 6 used in the manufacture of the product.

[0028] More specifically, A1 is the power consumption when manufacturing product P1 in equipment M1, A2 is the power consumption when manufacturing product P2 in equipment M2, and so on. x Product P x The power consumption when manufacturing is A x Let's assume that power consumption A x This is a value obtained by multiplying the power consumption stored in the master data 20 by the operating time, and is a value calculated by the calculation unit 11. The calculation unit 11 then calculates the power consumption data A1 to A x Calculate the total.

[0029] The estimation unit 12 uses the power supply data supplied from the power grid to the power utilization equipment 6 and the calculation unit 11 calculates A1 to A x The difference in power consumption data, which is the sum of the above, is calculated. The difference calculated by the estimation unit 12 is estimated as unused power data.

[0030] Figure 4 is a diagram illustrating unused power data according to one embodiment of the present invention. The illustrated example is a time chart for each process included in one manufacturing cycle when the power utilization equipment 6 is a die-casting facility that manufactures engines. In the figure, t1 represents operating time and t2 represents waiting time.

[0031] For example, in the "mold opening limit" process, the die-casting equipment is in an open state, waiting for other equipment to operate, and is therefore not directly involved in engine manufacturing. Thus, the "mold opening limit" process can be considered a waiting time t2. From this, the power consumed during the "mold opening limit" process is considered unused power data, as it is not directly used in product manufacturing. The power consumed in other processes is the power consumption of the power-using equipment 6 during operation.

[0032] The power consumed during the "mold opening limit" process is the power consumed during the standby time t2 of the power utilization equipment 6, and is therefore not necessarily required from the perspective of calculating the CFP value. For this reason, it is excluded from the supplied power as unused power data estimated by the estimation unit 12. In this way, the power estimation device 10 can calculate the CFP value of the power utilization equipment 6 based on the power consumption during the operating time t1 by considering the unused power data.

[0033] <Power estimation method> Figures 5 and 6 show the flow of the power estimation method performed by the power estimation device 10 according to one embodiment of the present invention. Figure 5 shows the flow of the process for generating master data 20, and Figure 6 shows the flow of the process for estimating unused power data using the master data 20.

[0034] As shown in Figure 5, the application program receives input such as the model number of the power-using equipment 6 to be measured and the model number of the product to be manufactured (S101). The power consumption of the power-using equipment 6 is measured using a portable measuring device (S102). Operation information of the power-using equipment 6 is obtained from the monitoring device 8 (S103), and product identification information is obtained from the management device 9 (S104).

[0035] The application program receives operational information of the power utilization equipment 6, product identification information, and measured power consumption (S105). The application program generates master data 20 containing the average power consumption values ​​during operation for each power utilization equipment 6 and each product being manufactured (S106).

[0036] As shown in Figure 6, when the power utilization equipment 6 is in operation, the power estimation device 10 acquires operational information of the power utilization equipment 6 from the monitoring device 8 (S201). The power estimation device 10 inputs the operational information into the master data 20 (S202).

[0037] The calculation unit 11 calculates power consumption data related to the power consumed by the power utilization equipment 6 based on the master data 20 (S203). The estimation unit 12 estimates the difference between the power supply data related to the power supplied from the power grid to the power utilization equipment 6 and the power consumption data calculated by the calculation unit 11 as unused power data (S204).

[0038] These steps carry out the power estimation method according to one embodiment of the present invention. However, the power estimation method according to one embodiment of the present invention may include other steps as appropriate, depending on the implementation conditions and environment.

[0039] <Effects of the power estimation device 10 according to this embodiment> According to the power estimation device 10 of this embodiment, unused power data, which is power consumed in processes not directly related to product manufacturing, can be excluded from the power supply data supplied to the power utilization equipment 6. Therefore, the CFP value can be calculated based on power consumption that reflects the operating status of the equipment according to the work process.

[0040] Furthermore, the power estimation device 10 can contribute to energy conservation measures by associating and storing power consumption data, manufactured products, and operational information from the power utilization equipment 6.

[0041] Furthermore, the power estimation device 10 estimates unused power data using master data 20 obtained by pre-measuring the power consumption of power-using equipment 6 using a portable measuring device. This allows for flexible responses to changes in the layout of each power-using equipment 6 in a factory or other work environment without affecting the calculation of CFP values.

[0042] Although the present invention has been described above in accordance with the embodiments described above, the present invention is not limited to the configuration of the embodiments described above, and of course includes various modifications, alterations, and combinations that can be made by a person skilled in the art within the scope of the claims of the present patent application. [Explanation of Symbols]

[0043] 6 Electric power usage equipment 8 Monitoring device 9 Management device 10 Power estimation device 11 Calculation Section 12 Estimation part 20 Master Data

Claims

1. A calculation unit that calculates power consumption data related to the power consumed in power utilization equipment based on pre-generated master data, An estimation unit estimates the difference between the power supply data and the power consumption data relating to the power supplied from the power grid to the power utilization equipment as unused power data, Equipped with, The master data includes data measuring the power consumption per predetermined time for each power-using equipment. Power estimation device.

2. The aforementioned power utilization equipment is equipment for manufacturing products, The aforementioned power consumption data is the sum of the power values ​​consumed for the manufacture of the product for each power utilization facility. The master data includes data measuring the power consumption per predetermined time for each manufactured product for each power-using facility. The power estimation device according to claim 1.

3. The aforementioned unused power data includes power consumption during at least the standby time in the manufacturing process of the product. The power estimation device according to claim 2.

4. The power consumption for generating the master data is measured using a portable measuring device that can be carried by the user. The power estimation device according to claim 1.

5. A power estimation method performed by a power estimation device, A step of calculating power consumption data related to the power consumed in power utilization equipment based on pre-generated master data, A step of estimating the difference between the power supply data and the power consumption data relating to the power supplied from the power grid to the power utilization equipment as unused power data, Includes, The master data includes data measuring the power consumption per predetermined time for each power-using equipment. Power estimation method.

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