JP2011193602A - Energy attribute determination unit and energy attribute determination method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an energy attribute determination unit which can determine the attributes of energy consumption of apparatus uniformly. <P>SOLUTION: The energy attribute determination unit receives the data of power consumption (S11). The energy attribute determination unit divides the stored data of power consumption day by day to produce the data of the first day, the data of the second day, the data of the third day, and the data of the fourth day (S13), calculates a correlation coefficient of the data of the second day with reference to the data of the first day (S14), and then calculates an average value of the correlation coefficients of four days thus calculated, i.e., the average correlation coefficient (R), (S15). If the average correlation coefficient (R) is 0.8 or more (YES at S16), the attribute of energy consumption is determined as a fixed energy (S17), and if it is smaller than 0.8 (NO at S16), the attribute of energy consumption is determined as a fluctuation energy (S18). <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an energy attribute determination device and an energy attribute determination method, and more particularly to an energy attribute determination device and an energy attribute determination method for determining an attribute of energy consumption of a device.

  For example, Japanese Unexamined Patent Application Publication No. 2002-369385 (Patent Document 1) discloses a technique for holding data indicating the name, usage time, power consumption, and the like of an electrical device used in a home. . According to Patent Document 1, power is supplied as inexpensively as possible using stored data.

JP 2002-369385 A

  Here, energy consumption such as power consumption of equipment is divided into fixed energy that is regularly consumed and variable energy that is variably consumed based on its attributes.

  In addition, for example, when a plurality of factories are owned in one company, the attribute of energy consumption of the equipment used in the factory is arbitrarily determined by the user for each factory, for example, This factory was identified as fixed energy, while the other factory was identified as fluctuating energy.

  An object of the present invention is to provide an energy attribute determination device and an energy attribute determination method that can uniformly determine an attribute of energy consumption of a device.

  The energy attribute determination apparatus according to the present invention is an energy attribute determination apparatus that determines an attribute of energy consumption of a device. The energy attribute discrimination device includes an acquisition unit that acquires an energy consumption amount per unit time of the device, and whether or not a time series change of the energy consumption amount per unit time of the device acquired by the acquisition unit has periodicity. Based on the determination means for determining and the result determined by the determination means, it is determined whether the attribute of the energy consumption of the device is fixed energy that is regularly consumed or variable energy that is variably consumed Energy discriminating means.

  Such an energy attribute discriminating apparatus determines whether or not the attribute of the energy consumption of the device is fixed energy by determining whether or not the time-series change of the energy consumption amount per unit time of the device has periodicity. Determine whether the energy is fluctuating. Therefore, the attribute of the energy consumption of the device can be determined based on the amount of energy consumption per unit time of the device, not arbitrarily by the user, and can be determined uniformly.

  As one embodiment, the determination unit calculates a correlation coefficient based on a time-series change in the amount of energy consumption per unit time of the device acquired by the acquisition unit, and whether or not it has periodicity from the calculated correlation coefficient Determine whether.

  Preferably, the correlation coefficient is calculated by comparing the time series change of the energy consumption amount per unit time of the first device and the time series change of the energy consumption amount per unit time of the second device. The type of energy used by the first device and the type of energy used by the second device are the same. By doing so, since the same type of energy can be compared, the attribute of the consumed energy can be easily determined.

  More preferably, the correlation coefficient is calculated by comparing the time series change of the energy consumption per unit time of the first device with the time series change of the energy consumption per unit time of the second device. The type of energy used by the first device is different from the type of energy used by the second device. By doing so, it is possible to determine the attribute of consumed energy regardless of the type of energy used.

  In another aspect of the present invention, the present invention relates to an energy attribute determination method for determining an attribute of energy consumption of a device. The energy attribute determination method includes a process of acquiring an energy consumption amount per unit time of a device, a process of determining whether a time series change of the acquired energy consumption amount per unit time of the device has periodicity, and And determining whether the attribute of energy consumption of the device is fixed energy that is regularly consumed or variable energy that is variably consumed based on the determined result.

  Such an energy attribute determination method determines whether the attribute of the energy consumption of the device is fixed energy by determining whether the time-series change in the amount of energy consumption per unit time of the device has periodicity. Determine whether the energy is fluctuating. Therefore, the attribute of the energy consumption of the device can be determined based on the amount of energy consumption per unit time of the device, not arbitrarily by the user, and can be determined uniformly.

  The energy attribute determination apparatus according to the present invention determines whether the time-series change in the amount of energy consumed per unit time of the device has periodicity, so that the attribute of the energy consumption of the device is fixed energy. Or whether it is fluctuating energy. Therefore, the attribute of the energy consumption of the device can be determined based on the amount of energy consumption per unit time of the device, not arbitrarily by the user, and can be determined uniformly.

  In addition, the energy attribute determination method according to the present invention determines whether the time-series change in the amount of energy consumed per unit time of the device has periodicity, so that the attribute of the device consumed energy is fixed energy. Or whether it is fluctuating energy. Therefore, the attribute of the energy consumption of the device can be determined based on the amount of energy consumption per unit time of the device, not arbitrarily by the user, and can be determined uniformly.

It is a block diagram which shows the energy attribute discrimination device which concerns on one Embodiment of this invention, and the 1st and 2nd watt-hour meter connected to an energy attribute discrimination device. It is a flowchart shown about the case where an energy attribute discrimination | determination apparatus discriminate | determines the attribute of the consumption energy in the 1st and 2nd apparatus. 6 is a graph showing stored power consumption data. It is a figure which shows the list of the calculated correlation coefficient in the 1st apparatus. In the 1st apparatus, it is a graph which shows the state which divided | segmented and divided the data of power consumption for every day. In the 2nd apparatus, it is a graph which shows the state which divided | segmented and divided the data of power consumption for every day.

  Hereinafter, an energy attribute determination device according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a block diagram showing an energy attribute determination device 10 according to an embodiment of the present invention and first and second watt-hour meters 15a and 15b connected to the energy attribute determination device 10. Referring to FIG. 1, an energy attribute determination device 10 includes a control unit 11 that controls the entire energy attribute determination device 10, an I / F unit 13 that serves as an interface (I / F) with an external device, and an I / F. And a storage unit 12 for storing data acquired via the unit 13.

  The I / F unit 13 is connected to the first and second watt-hour meters 15a and 15b, and acquires the data of the power consumption measured by the first and second watt-hour meters 15a and 15b. The storage unit 12 stores power consumption data acquired through the I / F unit 13.

  The first and second watt-hour meters 15a and 15b are connected to, for example, different first and second devices 16a and 16b in one factory, and consumed by the first and second devices 16a and 16b. Measure power consumption. In addition, as described above, the first and second watt-hour meters 15a and 15b are connected to the energy attribute determination device 10 and notify data of the measured power consumption.

  The energy attribute determination device 10 determines the attribute of energy consumption of the first and second devices 16a and 16b based on the data of the power consumption notified from the first and second watt-hour meters 15a and 15b. . Here, the energy consumption of the device is divided into fixed energy consumed periodically and variable energy consumed variably as its attributes. Then, the energy attribute determination device 10 determines whether the attribute of the energy consumption of the device is fixed energy or variable energy. In this embodiment, electric power is adopted as the energy consumed by the device.

  Here, the case where the energy attribute determination apparatus 10 determines the attribute of the consumed energy in the first and second devices 16a and 16b will be described. FIG. 2 is a flowchart illustrating a case where the energy attribute determination device 10 determines the attribute of energy consumption in the first and second devices 16a and 16b. This will be described with reference to FIGS.

  First, the 1st and 2nd watt-hour meter 15a, 15b measures the power consumption of the 1st and 2nd apparatus 16a. For example, the measurement of the power consumption is continuously performed every predetermined time for 4 days. Then, the measured energy consumption data is notified to the energy attribute determination device 10.

  Then, the energy attribute discriminating apparatus 10 receives the power consumption data measured from the first and second watt-hour meters 15a and 15b (step S11 in FIG. 2 and the following steps are omitted). Thereby, the energy attribute discrimination device 10 acquires the amount of energy consumption of the device every predetermined time. Here, the control unit 11 operates as the acquisition unit 11a. And the data of power consumption is memorize | stored in the memory | storage part 12 (S12).

  FIG. 3 is a graph showing stored power consumption data. With reference to FIG. 3, the horizontal axis indicates time, and the vertical axis indicates power consumption. Further, the power consumption of the first device 16a is indicated by a dotted line, and the power consumption of the second device 16b is indicated by a solid line.

  Then, in the first device 16a, the energy attribute determination device 10 divides the stored power consumption data for every predetermined time every day, that is, every 24 hours, and the first day data, the second The data of the day, the data of the third day, and the data of the fourth day are set (S13). That is, the stored energy consumption data for each predetermined time is set as time-series data of energy consumption per unit time, here, per day. Then, the correlation coefficient of the data on the second day is calculated using the data on the first day as a reference (S14). The correlation coefficient calculation formula is as follows: Rt is the correlation coefficient, x is the power consumption on the first day, x is the power consumption on the second day, and n is the number of data per day.

である。同様に、第１日目のデータを基準として第３日目のデータの相関係数、第１日目のデータを基準として第４日目のデータの相関係数、および第１日目のデータを基準として第１日目のデータの相関係数を算出する。すなわち、機器の単位時間当たりの消費エネルギー量の時系列変化に基づいて相関係数を算出する。

It is. Similarly, the correlation coefficient of the third day data with the first day data as a reference, the correlation coefficient of the fourth day data with the first day data as a reference, and the first day data Is used as a reference to calculate the correlation coefficient of the data on the first day. That is, the correlation coefficient is calculated based on the time series change of the energy consumption amount per unit time of the device.

  Then, an average value of the calculated correlation coefficients for four days, that is, an average correlation coefficient (R) is calculated (S15). If the average correlation coefficient (R) is 0.8 or more (YES in S16), it is determined that the energy is fixed energy (S17). If it is smaller than 0.8 (NO in S16), it is determined that the energy is fluctuating (S18). That is, using the calculated correlation coefficient, it is determined whether or not the time-series change in the energy consumption amount per unit time of the device has periodicity. If the average correlation coefficient is 0.8 or more, it has periodicity, and if it is less than 0.8, it has no periodicity. Then, based on the determined result, it is determined whether the attribute of the energy consumption of the device is fixed energy that is regularly consumed or variable energy that is variably consumed. Here, the control unit 11 operates as the determination unit 11b and the energy determination unit 11c.

  FIG. 4 is a diagram showing a list of calculated correlation coefficients in the first device 16a. Referring to FIG. 4, the correlation coefficient (Rt) with respect to the first day is naturally 1 with the first day as a reference. The correlation coefficient (Rt) for the second day is 0.87. The correlation coefficient (Rt) for the third day is 0.89. The correlation coefficient (Rt) for the fourth day is 0.97. The average correlation coefficient (R) for four days with respect to the first day is 0.93. Therefore, it is determined that the attribute of energy consumption in the first device 16a is fixed energy.

  Similarly, the second device 16b performs the processes of S13 to S18, and determines that the attribute of the consumed energy in the second device 16b is variable energy.

  FIG. 5 is a graph showing a state in which the power consumption data is divided for each day and superimposed in the first device 16a. FIG. 6 is a graph showing a state in which the power consumption data is divided for each day and superimposed in the second device 16b. With reference to FIG. 5 and FIG. 6, the first device 16 a has periodicity in the consumption energy amount data every day, but the second device 16 b has no periodicity in the consumption energy amount data every day. .

  As described above, the energy attribute determination apparatus 10 determines whether the time-series change in the amount of energy consumption per unit time of the device has periodicity, so that the attribute of the device energy consumption is fixed energy. It is discriminated whether it is fluctuating energy. Therefore, the attribute of the energy consumption of the device can be determined based on the amount of energy consumption per unit time of the device, not arbitrarily by the user, and can be determined uniformly.

  In addition, such an energy attribute determination method determines whether or not the time-series change in the amount of energy consumption per unit time of the device has periodicity, so that the attribute of the device energy consumption is fixed energy. It is discriminated whether it is fluctuating energy. Therefore, the attribute of the energy consumption of the device can be determined based on the amount of energy consumption per unit time of the device, not arbitrarily by the user, and can be determined uniformly.

  In the above-described embodiment, an example in which the energy consumption is acquired for each device has been described. However, the present invention is not limited to this. For example, a plurality of devices may be grouped and acquired for each group. Moreover, energy consumption may be acquired for each group, and it may be determined for each group whether it is fixed energy or variable energy.

  Further, in the above embodiment, an example in which electric power is used as energy consumption has been described. However, the present invention is not limited to this, and a signal indicating the operating state of equipment, the amount of cold / hot water, the amount of steam, etc. Good. Moreover, the amount of power generation, the amount of gas, or the like may be used, and any energy can be employed.

  Further, in the above embodiment, the same type of energy is compared as the comparison target of the time series change of the energy consumption amount, such as the power consumption amount on the first day and the power consumption amount on the second day. However, the present invention is not limited to this. For example, one is the power consumption of the press and the other is different types of energy, such as the temperature of the room in which the press is installed. May be compared. By doing so, it is possible to determine the attribute of consumed energy regardless of the type of energy used.

  Furthermore, if there is a correlation between the press machine determined to be fixed energy and the room temperature determined to be fixed energy, for example, in an air conditioner predetermined as related to the press machine and room temperature, You may determine automatically that the attribute of the energy consumption of an air conditioner is fixed energy, without determining the attribute of the energy consumption of an air conditioner by acquiring the energy consumption per unit time. That is, according to the result of determining the attribute of energy consumption of the device, it may be determined that the device related to the determined device has the same consumption energy attribute as the determined device.

  In the above embodiment, the example of determining whether the energy is fixed energy or fluctuating energy has been described based on the correlation coefficient. However, the present invention is not limited to this. For example, based on other values. You may go.

  As mentioned above, although embodiment of this invention was described with reference to drawings, this invention is not limited to the thing of embodiment shown in figure. Various modifications and variations can be made to the illustrated embodiment within the same range or equivalent range as the present invention.

  The present invention is effectively used when it is necessary to distinguish between fixed energy and fluctuating energy.

  DESCRIPTION OF SYMBOLS 10 Energy attribute discrimination | determination apparatus, 11 Control part, 11a Acquisition means, 11b Judgment means, 11c Energy discrimination means, 12 Memory | storage part, 13 I / F part, 15a, 15b Electricity meter, 16a, 16b Apparatus.

Claims (5)

An energy attribute determination device for determining an attribute of energy consumption of a device,
An acquisition means for acquiring the energy consumption per unit time of the device;
Determining means for determining whether or not the time-series change in the energy consumption per unit time of the device acquired by the acquiring means has periodicity;
An energy discriminating unit that discriminates whether the attribute of the energy consumption of the device is a fixed energy that is regularly consumed or a fluctuating energy that is variably consumed based on a result determined by the determining unit; An energy attribute discrimination device. The determination means calculates a correlation coefficient based on a time-series change in the amount of energy consumption per unit time of the device acquired by the acquisition means, and determines whether or not it has periodicity from the calculated correlation coefficient. The energy attribute discriminating apparatus according to claim 1, wherein the energy attribute discriminating apparatus is determined. The calculation of the correlation coefficient is performed by comparing the time series change of the energy consumption amount per unit time of the first device and the time series change of the energy consumption amount per unit time of the second device, The energy attribute determination apparatus according to claim 2, wherein a type of energy used by the first device and a type of energy used by the second device are the same. The calculation of the correlation coefficient is performed by comparing the time series change of the energy consumption amount per unit time of the first device and the time series change of the energy consumption amount per unit time of the second device, The energy attribute discrimination device according to claim 2, wherein the type of energy used by the first device and the type of energy used by the second device are different. An energy attribute determination method for determining an attribute of energy consumption of a device,
The process of obtaining the energy consumption per unit time of the device,
Determining whether the acquired time-series change in the amount of energy consumption per unit time of the device has periodicity;
Energy attribute determination comprising: determining whether the attribute of energy consumption of the device is fixed energy that is regularly consumed or variable energy that is variably consumed based on the determined result Method.

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