JP2015186285A - power consumption analysis method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a power consumption analysis method making it possible to provide information more useful for a user by further effectively utilizing measurement data of power consumption in an electric apparatus.SOLUTION: A power consumption analysis method is configured to analyze use of power consumed in an electric apparatus (a machine tool 100a, a welder 100b) in time sequence by comparing time-sequence data of power consumption stored per unit time of the electric apparatus, and a running situation of the electric apparatus.

Description

  The present invention relates to a power consumption analysis method for analyzing the use of power consumed in an electrical device.

  In an electrical device that operates by electric power, for example, a factory where a production device is provided, power consumption (power consumption) in the production device is measured. For example, in Patent Document 1, the power consumption of the facility is measured by the first function, and if it is determined that the state where the power consumption is equal to or lower than the lower limit threshold exceeds the monitoring time limit, the lower limit alarm is generated by the second function. Yes. Then, when the lower limit alarm occurs, the power to the facility is shut off by the third function, and then the lower limit alarm is canceled by the fourth function and the third function is canceled and the facility is turned on again. . According to Patent Literature 1, it is possible to reduce standby power consumed when the facility is not in operation by such a configuration.

JP 2012-152004 A

  The measurement data of power consumption is generally used for the purpose of power saving and energy saving as in Patent Document 1 described above. However, the needs of consumers have been diversified, and in recent years, awareness of power saving and energy saving has further increased. For this reason, in order to meet these needs, it has been examined whether or not the power consumption measurement data can be used more effectively.

  In view of such a problem, the present invention provides a power consumption analysis method capable of providing more useful information to consumers by further effective utilization of power consumption measurement data in electrical equipment. It is an object.

  In order to solve the above-described problem, the representative configuration of the power consumption analysis method according to the present invention is to compare time series data of power consumption stored for each unit time of the electrical equipment with the operating status of the electrical equipment. Thus, the usage of the power consumed in the electric device is analyzed along a time series.

  According to the said structure, the power consumption of the electric equipment according to the operation condition of an electric equipment can be output as time series data analyzed for every use (consumption use) of electric power. Then, by referring to the analyzed time-series data, the customer can operate the equipment more efficiently, and thus can reduce the cost.

  The power consumption in the electrical device may be displayed in a waveform, and in the waveform display, the color may be output according to the application. According to such a configuration, it is possible to intuitively grasp the power consumption usage in an electric device for each usage.

  ADVANTAGE OF THE INVENTION According to this invention, the power consumption analysis method which can provide useful information by a consumer can be provided by aiming at the further effective utilization of the power consumption measurement data in an electric equipment.

It is a figure explaining the power consumption analysis method concerning this embodiment. It is a figure which illustrates the content of the data of an operation condition. It is a figure which illustrates the waveform display of time series data.

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The dimensions, materials, and other specific numerical values shown in the embodiments are merely examples for facilitating understanding of the invention, and do not limit the present invention unless otherwise specified. In the present specification and drawings, elements having substantially the same function and configuration are denoted by the same reference numerals, and redundant description is omitted, and elements not directly related to the present invention are not illustrated. To do.

  FIG. 1 is a diagram for explaining a power consumption analysis method according to the present embodiment. As shown in FIG. 1, in this embodiment, the machine tool 100a and the welding machine 100b which are production apparatuses installed in facilities, such as a factory, are illustrated as an electric apparatus which operate | moves by electricity. However, the present invention is not limited to this, and the present invention can naturally be applied when analyzing power consumption in other electric devices.

  As shown in FIG. 1, the power consumption analysis method of the present embodiment is realized using an analysis device 110 and current sensors 102a and 102b. The machine tool 100a and the welding machine 100b, which are electrical devices, are each connected to a system (commercial power supply) and supplied with power from the system. Further, current sensors 102a and 102b are connected to the machine tool 100a and the welding machine 100b, respectively, and currents flowing through the machine tool 100a and the welding machine 100b are measured in the current sensors (or electric energy sensors) 102a and 102b.

  In the present embodiment, the current value measured by the current sensors 102a and 102b is transmitted to the analysis device 110, and the power consumption per unit time in the electrical device is calculated by referring to the current value. However, the present invention is not limited to this. For example, a power amount sensor may be provided instead of the current sensor of the present embodiment, and the power consumption per unit time in the electrical device may be calculated with reference to the power amount measured by the power amount sensor. is there.

  Current values (hereinafter simply referred to as current values) of the machine tool 100a and the welding machine 100b measured by the current sensors 102a and 102b are transmitted to the analysis device 110. In the present embodiment, the current sensors 102a and 102b transmit current values wirelessly. This eliminates the need for wiring used to transmit the current value, thereby simplifying the device and thus reducing the device cost. Note that the configuration of the present embodiment is merely an example, and the current value transmission by the current sensors 102a and 102b may be wired.

  The current value transmitted from the current sensors 102 a and 102 b is received by the receiving antenna 112 a of the analysis device 110. The received current value is transmitted to the storage unit 114 via the reception unit 112 and stored in the storage unit 114. The current value stored in the storage unit 114 is transmitted to the analysis unit 116 every unit time. At this time, by setting the unit time to 1 minute, for example, data analysis in finer units becomes possible. The unit time may be 1 minute or more and may be set as appropriate. However, for example, a unit of 30 minutes is too large to be analyzed, and a unit of 1 second is too small and there is too much data to be analyzed. Therefore, the unit time is preferably about 30 seconds to 5 minutes in accordance with the production process and the cycle time of the production equipment.

  As shown in FIG. 1, in the analysis apparatus 110, the operating status of the machine tool 100 a and the welding machine 100 b (hereinafter simply referred to as the operating status) is input via the input unit 118. The operating status input via the input unit 118 is transmitted to the analysis unit 116. FIG. 2 is a diagram exemplifying the contents of the operation status data. As shown in FIG. 2, the operating status input to the input unit 118 is manufactured depending on the type of electrical equipment such as the machine tool 100a and the welding machine 100b, the start time and end time of the work, the work content, for example, the work. The types of products and their quantities can be exemplified. Note that the contents of the operating status shown in FIG. 2 are merely examples, and it is not necessary to input all of these contents, and it is possible to add other contents.

  In the analysis part 116, the power consumption per unit time of an electric equipment (the machine tool 100a and the welding machine 100b in this embodiment) is calculated from the current value per unit time transmitted from the storage part 114. Then, the analysis unit 116 compares the time series data of the power consumption with the operation status of the electric device input via the input unit 118, thereby determining the usage of the power consumed in the electric device in time series. And analyze.

  FIG. 3 is a diagram illustrating a waveform display of time series data. FIG. 3A illustrates a waveform display of power consumption time series data, and FIG. 3B illustrates each power usage. The waveform display of the time series data of the analyzed power consumption is illustrated. As shown in FIG. 3A, the power consumption time-series data before being analyzed by the analysis unit 116 does not know the operating status of the electrical equipment, that is, the usage (consumption usage) of the power.

  In contrast to FIG. 3A, the power consumption of the electrical device according to the operation status of the electrical device analyzed by the analysis unit 116 as in the present embodiment is the power consumption as illustrated in FIG. Output from the output unit 120 as time-series data analyzed for each consumption application. Specifically, in order from the left side of the time axis, setup before manufacture of product A, manufacture of product A, trouble during manufacture of product A, setup when manufacturing product B after manufacture of product A, etc. FIG. 3B reflects the power consumption usage based on the operating status of the electrical equipment.

  The analysis method will be described in detail. For example, it is assumed that in the operation status data, four products A are manufactured between times T1 and T2, and there is a trouble from time T11 to time T12. Compared with time series data, first, the power consumption is divided into a portion where the power consumption is higher than a predetermined threshold and a portion where the power consumption is low, and a portion where the power consumption is high is classified according to the number of products A manufactured. The portion with low power consumption is classified as standby power being set up when products are switched, and is classified as standby power between the same products.

  As explained above, by referring to time-series data reflecting the power consumption usage, the customer can operate the equipment more efficiently, and thus can reduce the cost. Become. For example, when the standby power for the setup or break time is large, the procedure can be changed so that the power is turned on immediately before the work is noticed. When the standby time is long, the production efficiency can be improved by changing the order of products to be manufactured. In addition, by knowing the power consumption according to the usage of multiple electrical devices individually, if the power consumption of one electrical device is large, the other electrical device can produce a product with low power consumption, It is also possible to cut. Therefore, the measurement data of the power consumption in the electric device can be further effectively used, and more useful information can be provided to the consumer.

  More preferably, when the output unit 120 displays the time series data of power consumption in the electric device shown in FIG. 3B as a waveform, the output unit 120 may output the waveform display by color coding according to the application. Thereby, it is possible to intuitively grasp the power consumption usage in the electrical device for each usage. Therefore, it becomes possible to more effectively utilize the measurement data of power consumption and by extension the time series data for each application.

  As mentioned above, although preferred embodiment of this invention was described referring an accompanying drawing, it cannot be overemphasized that this invention is not limited to the example which concerns. It will be apparent to those skilled in the art that various changes and modifications can be made within the scope of the claims, and these are naturally within the technical scope of the present invention. Understood.

  INDUSTRIAL APPLICABILITY The present invention can be used as a power consumption analysis method for analyzing the use of power consumed in electrical equipment.

DESCRIPTION OF SYMBOLS 100a ... Machine tool, 100b ... Welding machine, 102a ... Current sensor, 102b ... Current sensor, 110 ... Analysis apparatus, 112 ... Reception part, 112a ... Reception antenna, 114 ... Memory | storage part, 116 ... Analysis part, 118 ... Input part, 120: Output unit

Claims (2)

  By comparing the time series data of power consumption stored for each unit time of the electrical equipment with the operating status of the electrical equipment, the usage of the power consumed in the electrical equipment can be analyzed along the time series. Characteristic power consumption analysis method. Waveform display of power consumption in the electrical equipment,
The power consumption analysis method according to claim 1, wherein in the waveform display, the waveform display is performed by color-coding according to the application.

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