JP2015154595A - Energy management device and energy management method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy management device and an energy management method, capable of preventing ununiformity in the number of executions and intervals for suppressing the amount of power to be supplied to a demand apparatus.SOLUTION: An energy management device 2 which is a device for controlling the amount of power to be supplied to the demand apparatus, includes a storage unit 21, a collection unit 22, a judgement unit 23, an acquisition unit 24, a determination unit 25, an execution unit 26 and an update unit 27. Here, when the judgement unit 23 judges that DR is necessary, the determination unit 25 determines the demand apparatus for executing DR on the basis of the amount of used electric power of respective demand apparatuses stored in the memory unit 21 and the reduced amount of power consumption acquired by the acquisition unit 24.

Description

  The present invention relates to an energy management apparatus and an energy management method.

  In response to the recent tight supply and demand of electric power, the power generation side does not respond to the demand by increasing the supply amount when achieving the same amount of power and supply, but to suppress the power consumption on the demand side Demand Response (Demand Response) (hereinafter referred to as “DR”) is attracting attention. In this DR, operation control such as drive stop and output adjustment is performed by a demand side device (hereinafter also referred to as “demand device”) in accordance with a required amount of power consumption suppression. It has been proposed that priorities of these operation controls are determined in advance from the viewpoint of the magnitude of the power suppression effect, the ease of device operation, the response speed of the suppression effect, and the like (for example, Patent Document 1). reference.).

JP 2012-165513 A

  However, as described above, when the DR is executed, the driving of the demand device is stopped and the output is adjusted, so that a resident who uses the demand device may have an adverse effect such as discomfort. In particular, if the number of DR implementations is greater than that of other residents, or if the DR implementation interval is shorter, the psychological burden on the residents may increase and discomfort may increase.

  Then, it aims at providing the energy management apparatus and energy management method which can prevent the frequency | count of implementation of suppression of the electric energy supplied to a demand apparatus, and the nonuniformity of an implementation interval.

  In order to solve the above-described problems, the energy management apparatus according to the present embodiment includes a storage unit that stores the power usage results of each of a plurality of demand devices that are management targets, and a reduction in power consumption for the management targets. An acquisition unit that acquires the amount, a determination unit that determines a demand device that suppresses the amount of power to be supplied based on the reduction amount acquired by the acquisition unit, and the power usage record stored in the storage unit, and the determination And an implementation unit that implements suppression of the amount of power supplied to the demand device determined by the unit.

  The said energy management apparatus WHEREIN: You may make it a determination part determine the demand apparatus which suppresses the supplied electric energy based on the frequency | count which implemented the suppression of the supplied electric energy as an electric power use performance.

  Further, in the energy management apparatus, the determining unit determines a demand device that suppresses the amount of power to be supplied based on an elapsed time since the suppression of the amount of power to be supplied is performed as a power usage record. Also good.

  Further, the energy management method according to the present invention includes a storage step of storing the power usage results of each of a plurality of demand devices that are management targets, an acquisition step of acquiring a reduction amount of power consumption for the management target, and the acquisition step A determination step for determining a demand device that suppresses the amount of power to be supplied based on the reduction amount acquired in step 1 and the power usage record stored in the storage step, and supply to the demand device determined in this determination step And an implementation step for carrying out suppression of the amount of electric power.

  According to the present invention, since a demand device that suppresses the amount of power to be supplied is determined based on the power usage record of the demand device, it is possible to prevent unevenness in the number of executions and intervals of the suppression.

FIG. 1 is a block diagram showing the configuration of the energy management system. FIG. 2 is a block diagram illustrating a configuration of the energy management apparatus. FIG. 3 is a flowchart showing the operation of the energy management apparatus. FIG. 4A is a diagram illustrating an example of the DR suppression power amount of each demand device. FIG. 4B is a diagram illustrating an example of a method of determining a demand device that performs DR based on the number of DR executions. FIG. 4C is a diagram illustrating an example of a method for determining a demand device that performs DR based on an elapsed time since the previous DR was performed.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

<Configuration of energy management system>
The energy management system shown in FIG. 1 includes a plurality of demand devices 1a to 1n and an energy management device 2 that controls the amount of power supplied to these demand devices 1a to 1n.

  The demand devices 1 a to 1 n are devices that are arranged in a building or the like provided with an energy management system and are driven by electric power supplied from the energy management device 2.

  The energy management device 2 is a device that controls the amount of power supplied to the demand devices 1a to 1n. As shown in FIG. 2, such an energy management device 2 includes a storage unit 21, a collection unit 22, a determination unit 23, an acquisition unit 24, a determination unit 25, an implementation unit 26, and an update unit 27. It has.

  The memory | storage part 21 memorize | stores the electric power usage performance of each demand apparatus 1a-1n. In this power usage record, the number of times the execution unit 26 performs the suppression of the amount of power supplied to the demand devices 1a to 1n (hereinafter also referred to as “DR”), the history of the power consumption of the demand devices 1a to 1n, Information on power consumption that can be suppressed when the demand devices 1a to 1n perform DR is included.

  The collection unit 22 collects information on the amount of power supplied to the building provided with the energy management system in a predetermined time zone and the power consumption of the demand devices 1a to 1n in the predetermined time zone. Here, the amount of power supplied to the building is obtained from, for example, an electric power company or calculated from the amount of power supplied in the past from the actual power usage stored in the storage unit 21. Can be collected. Moreover, the power consumption of the demand devices 1a to 1n can be collected from the power usage results of the demand devices 1a to 1n stored in the storage unit 21, for example.

  Based on the information collected by the collection unit 22, the determination unit 23 determines whether or not DR is necessary for a building provided with an energy management system in a predetermined time zone.

  When the determination unit 23 determines that DR is necessary, the acquisition unit 24 acquires a reduction amount of power consumption in a building in which the energy management system is provided in a predetermined time zone. This reduction amount can be acquired by, for example, acquiring from the electric power company or calculating based on the information collected by the collection unit 22. In this Embodiment, based on the information which the collection part 22 collected, the electric energy supplied to the building in which the energy management system was provided in the predetermined time slot | zone, and the demand apparatus 1a-in the predetermined time slot | zone. It is calculated from the difference from the power consumption of 1n.

  When the determination unit 23 determines that the DR is necessary, the determination unit 25 stores the power usage record of each of the demand devices 1a to 1n stored in the storage unit 21 and the power consumption acquired by the acquisition unit 24. Based on the reduction amount, the demand devices 1a to 1n that perform DR are determined.

  The implementation unit 26 performs DR on the demand devices 1a to 1n determined by the determination unit 25.

  The update unit 27 updates the power usage results of the demand devices 1a to 1n for which DR has been executed by the execution unit 26.

Such an energy management device 2 includes information from the outside such as an arithmetic device such as a CPU (Central Processing Unit), a storage device such as a memory and an HDD (Hard Disc Drive), and a keyboard, mouse, pointing device, button, touch panel, and the like. A computer comprising an input device for detecting input, an I / F (Interface) device for transmitting / receiving information to / from the outside, and a display device such as an LCD (Liquid Crystal Display) or an organic EL (Electro Luminescence) Has been. That is, the energy management device 2 controls the hardware resources as described above by a program installed in the computer, and the hardware device and the software cooperate with each other, whereby the storage unit 21, the collection unit 22, A determination unit 23, an acquisition unit 24, a determination unit 25, an execution unit 26, and an update unit 27 are realized.
The program may be provided in a state recorded in a storage medium such as an HDD, CD-ROM, DVD-ROM, or memory card.

<Operation of energy management device>
Next, the operation of the energy management device 2 will be described with reference to FIG.

  First, the collection part 22 acquires the electric energy supplied to the building in which the energy management system was provided in the predetermined time slot | zone, and the electric power consumption of the demand apparatus 1a-1n of the predetermined | prescribed time slot | zone (step) S1, S2). Then, the determination unit 23 determines whether it is necessary to perform DR (step S3). This determination is performed by comparing the amount of power supplied to the building with the amount of power consumed by the demand devices 1a to 1n. Specifically, the determination unit 23 determines that the execution of DR is unnecessary when the amount of power supplied to the building is larger than the power consumption amount of the demand devices 1a to 1n, and is supplied to the building. When the amount of power is smaller than the amount of power consumed by the demand devices 1a to 1n, it is determined that the DR needs to be performed.

  When the determination unit 23 determines that DR is not necessary (step S3: NO), the energy management device 2 returns to the process of step S1.

  On the other hand, when the determination unit 23 determines that DR is necessary (step S3: YES), the acquisition unit 24 acquires a reduction amount of power consumption (step S4).

If the reduction amount of power consumption is acquired, the determination part 25 will determine the demand apparatus which implements DR (step S5). Specifically, the determination unit 25 refers to the power usage record stored in the storage unit 21 and determines a demand device that performs DR based on the number of times DR has been performed so far. A method for determining these demand devices will be described with reference to FIGS. 4A and 4B.
In the following, as shown in FIG. 4A, the amount of power that can be suppressed when DR is executed on the demand devices 1a to 1f provided in the energy management system 1 (hereinafter also referred to as “suppressed power amount”) is 50 in order. , 70, 40, 60, 20, 10, and the case where the reduction amount of the power consumption acquired by the collection unit 22 is 80 will be described as an example. In addition, these suppression electric energy is memorize | stored beforehand as the electric power use performance in the memory | storage part 21, and a unit is arbitrary.

First, the determination unit 25 refers to the power usage record described in the storage unit 21 and extracts a demand device with a small number of times of performing DR from all the demand devices. Various methods can be applied as this extraction method. For example, extract only the demand equipment with the smallest number of times, extract any predetermined number in order from the smallest number of times, calculate the average value of the number of times and extract the demand equipment below this average value, A threshold value may be set and a demand device whose number of times is less than or equal to the threshold value may be extracted.
In the following, a case will be described as an example in which a demand device having a DR implementation count of 2 or less is extracted.

  Next, a demand device for performing DR is determined from the extracted demand devices. Various methods can be applied to this determination method. For example, when the amount of power consumption is simply combined from the demand devices with the smallest number of times, a combination of demand devices that matches the amount of reduction in power consumption is selected, and this is determined as a demand device for performing DR. Also good. In addition, if there is no combination of demand equipment that matches the reduction amount with only the demand equipment with the smallest number of times, or if the reduction amount is insufficient, it is also possible to combine the demand equipment with the smallest number of times. Good.

  For example, in the case of Example 1 in FIG. 4B, the number of DR implementations of the demand devices 1 a to 1 f is 4 times, 3 times, 2 times, 1 time, 1 time, and 3 times in order. Therefore, the determination unit 25 extracts the demand devices 1c, 1d, and 1e as demand devices having the number of DR implementations of 2 or less, and by combining these restrained powers, the demand device that exactly matches the reduction amount of power consumption Select a combination. Here, as shown in FIG. 4A, the suppression power amounts of the demand devices 1c, 1d, and 1e are 40, 60, and 20, respectively, and the reduction amount of the power consumption amount is 80 as described above. The demand device 1c and the demand device 1e whose total amount of electric power is just 80 are selected, and these are determined as the demand devices for performing DR.

  Similarly, in the case of Example 2 in FIG. 4B, since the number of DR implementations of the demand devices 1a to 1f is 1 time, 2 times, 3 times, 4 times, 4 times, and 2 times in order, the determination unit 25 sets the DR Demand devices 1a, 1b, and 1f are extracted as demand devices having the number of times of execution of 2 or less. Then, the demand devices 1b and 1f are selected as the combination of demand devices whose combination of the suppressed power matches the reduction amount of the power consumption, and these are determined as the demand devices for performing the DR.

  Similarly, in the case of Example 3 in FIG. 4B, since the number of times of DR of the demand devices 1a to 1f is 1, 4, 3, 3, 1, 2 in order, the determining unit 25 determines the DR. The demand devices 1a, 1e, and 1f are extracted as demand devices having the number of times of implementation of 2 or less. In these cases, when the respective suppression powers are combined, the reduction amounts of the power consumption amount coincide with each other, so that the demand devices 1a, 1e, and 1f are determined as demand devices for performing DR.

  In this way, by determining the demand device that performs DR based on the number of DR implementations, non-uniformity in the number of DR implementations can be prevented. As a result, the resident's psychological burden can be reduced, and the resident's discomfort can be reduced.

  When the determining unit 25 determines a demand device that performs DR, the performing unit 26 performs DR on the determined demand device (step S6). Specifically, the implementation unit 26 controls the amount of power supplied to the demand device determined by the determination unit 25 in a predetermined time period, and stops driving the demand device or adjusts the output. . Thereby, in the predetermined time zone, the power consumption of the building to which the energy management system is applied is suppressed.

  If DR is implemented by the implementation part 26, the update part 27 will record the information regarding implemented DR in the electric power use performance of the memory | storage part 21 (step S7). Specifically, the updating unit 27 obtains information on the number of times the DR is included in the power usage record and the elapsed time since the DR is performed based on the demand device that performed the DR and the time when the DR was performed. Update. As a result, the next DR execution determination is performed based on the contents of the current DR execution.

  As described above, according to the present embodiment, since the demand devices 1a to 1n that perform DR are determined based on the power usage results of the demand devices 1a to 1n, it is possible to prevent non-uniformity in the number of times DR is performed. Is possible. Thereby, a resident's psychological burden can be reduced and, as a result, a resident's discomfort can be reduced.

In the present embodiment, the case where a demand device for performing DR is determined based on the number of times DR is performed as an example of power usage has been described as an example. However, power used when determining a demand device for performing DR is described. The usage record is not limited to the number of DR implementations, and various information can be used. For example, the determination may be made based on the elapsed time since the DR is performed, or the elapsed time and the number of DR implementations described above may be selectively used.
Below, an example of the method of determining the demand apparatus which implements DR based on the elapsed time after implementing DR is demonstrated below with reference to FIG. 4A and FIG. 4C.

When determining a demand device that performs DR in the elapsed time since the previous DR was performed, the determination unit 25 first selects a demand device that has a long elapsed time since the DR was performed from all the demand devices. Extract. Various methods can be applied as this extraction method. For example, only the demand equipment with the longest elapsed time is extracted, or an arbitrary predetermined number is extracted in order from the longest elapsed time, or the average value of the elapsed time is calculated and the demand equipment below this average value is extracted. Alternatively, a threshold value may be set and a demand device whose number of times is equal to or greater than the threshold value may be extracted.
In the following, a case will be described as an example in which a demand device having an elapsed time of 3 days or more after the previous DR is extracted is extracted. In addition, in the following, a case where days are used as the unit of elapsed time since the previous DR has been described will be described as an example, but various units such as hours, minutes, and seconds are applied as the unit of the elapsed time. Needless to say, you can.

  Next, the determination part 25 determines the demand apparatus which implements DR among the extracted demand apparatuses. Various methods can be applied to this determination method. For example, simply by combining the restrained power amount from among the demand devices with the longest number of elapsed days, a combination of demand devices that matches the reduction amount of power consumption is selected, and this is determined as the demand device for performing DR. May be. In addition, if there is no combination of demand equipment that matches the reduction amount with only the demand equipment with the maximum elapsed days, or if the reduction amount is not enough, combine the demand equipment with the least elapsed days. May be.

  For example, in the case of Example 1 in FIG. 4C, the number of days elapsed since the previous DR of the demand devices 1 a to 1 f is 4 days, 3 days, 2 days, 1 day, 1 day, and 3 days in order. Therefore, the determination unit 25 extracts the demand devices 1a, 1b, and 1f as demand devices having a long elapsed time since the previous DR, and combines these restrained powers to exactly match the amount of power consumption reduction. Select a combination of demand equipment. Here, the suppression power amounts of the demand devices 1a, 1b, and 1f are 50, 70, and 10 in order as shown in FIG. 4A, and the reduction amount of the power consumption amount is 80 as described above. The demand device 1b and the demand device 1f whose total amount of electric power is exactly 80 are selected, and these are determined as the demand devices for performing DR.

  Similarly, in the case of Example 2 in FIG. 4C, the number of days elapsed since the previous DR of the demand devices 1a to 1f is 1 day, 2 days, 3 days, 4 days, 4 days, 2 days in order, The determination unit 25 extracts demand devices 1c, 1d, and 1e as demand devices having a long elapsed time since the previous DR was performed. Then, the demand devices 1d and 1e are selected as the combination of the demand devices whose combination of the suppressed power matches the reduction amount of the power consumption, and these are determined as the demand devices for performing the DR.

  Similarly, in the case of Example 3 in FIG. 4C, since the number of DR executions of the demand devices 1a to 1f is 4th, 1st, 2nd, 2nd, 3rd, 3rd in order, The demand devices 1a, 1e, and 1f are extracted as the demand devices having a long elapsed time since the DR was performed. In these cases, when the respective suppression powers are combined, the reduction amounts of the power consumption amount coincide with each other, so that the demand devices 1a, 1e, and 1f are determined as demand devices for performing DR.

  Thus, non-uniformity in the elapsed time of DR can be prevented by determining the demand device that performs DR in the elapsed time since the previous DR was performed. As a result, the resident's psychological burden can be reduced, and the resident's discomfort can be reduced.

  Further, in the present embodiment, the case where the suppression power amount and the reduction amount of the power consumption amount are matched is described as an example. However, they may not be the same, for example, the suppression power amount is a reduction of the power consumption amount. You may make it exceed the quantity.

  The present invention can be applied to various systems including a demand device that uses electric power.

  DESCRIPTION OF SYMBOLS 1a-1n ... Demand apparatus, 2 ... Energy management apparatus, 21 ... Memory | storage part, 22 ... Acquisition part, 23 ... Determination part, 24 ... Acquisition part, 25 ... Determination part, 26 ... Implementation part, 27 ... Update part.

Claims (4)

A storage unit that stores the power usage results of each of a plurality of demand devices that are management targets;
An acquisition unit for acquiring a reduction amount of power consumption for the management target;
A determination unit that determines the demand device that suppresses the amount of power to be supplied, based on the reduction amount acquired by the acquisition unit and the power usage record stored in the storage unit,
An energy management apparatus comprising: an implementation unit that performs suppression of the amount of power supplied to the demand device determined by the determination unit. The energy management device according to claim 1,
The said determination part determines the said demand apparatus which suppresses the electric energy to supply based on the frequency | count of implementing suppression of the electric energy to supply as the said electric power use result. The energy management apparatus characterized by the above-mentioned. The energy management device according to claim 1,
The said determination part determines the said demand apparatus which suppresses the electric energy to supply based on the elapsed time after implementing suppression of the electric energy to supply as the said electric power use performance. The energy management apparatus characterized by the above-mentioned . A storage step for storing a power usage record of each of a plurality of demand devices to be managed;
An acquisition step of acquiring a reduction amount of power consumption for the management target;
A determination step of determining the demand device that suppresses the amount of power to be supplied based on the reduction amount acquired in the acquisition step and the power usage record stored in the storage step;
An energy management method comprising: an execution step of suppressing the amount of power supplied to the demand device determined by the determination step.

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