JP2002142360A - Method and apparatus for controlling used power - Google Patents

Abstract

PROBLEM TO BE SOLVED: To suppress environmental deterioration by reducing environment deterioration where amenity is taken seriously to almost nothing, and moreover reducing continuous demand control for loads which correspond to other spaces sharply. SOLUTION: At least part of loads are classified into first loads, which are power- consumption-reduction-operated according to the change of a power consumption within a prescribed time interval, and second loads which are subjected to power- consumption-reduction operation, to the extent that the change of an operating condition is not sufficiently large enough to make people feel amenity deterioration, in spite of a change of power consumption. A plurality of control levels for performing power consumption reduction operations, and priority orders for performing power consumption reduction control are set for the first lods beforehand. On the condition that a control level not lower than a prescribed level is generated in each time interval, the second loads are caused to perform power consumption reduction control from the beginning of the next time interval to an extent that the change of an operating condition is not sufficiently large to make people feel amenity deterioration, and the first loads are caused to perform power consumption reduction control, so that the total power consumption does not exceed the target value in each time interval.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for controlling power consumption, and more particularly, to a total power consumption of all loads not exceeding a predetermined target power within a predetermined time period. To control the operation state of each load as described above.

[0002]

2. Description of the Related Art At present, electricity rates in Japan consist of two rates, a basic rate and a usage rate, and the contracted power on which the basic rate is calculated is determined by consultation with the power company. Have been. In other words, the maximum usage contract power for each customer is set in consultation with the power company, and the basic fee determined according to this contract power,
A usage fee corresponding to the amount of power used is paid.

[0003] Of these, the basic fee is determined as follows. That is, the total power consumption in 30-minute units is measured for one month, the maximum value of which is taken as the maximum power for that month, and the maximum power used for any 30 minutes in the past year including this month The value is assumed to be the contracted power for the next one year, and a basic amount is set every month by multiplying the value by a fixed amount.

[0004] Therefore, if the maximum value of the power consumption in 30-minute units can be reduced, not only the usage fee,
The basic fee can be reduced.

[0005] A power consumption control method (demand control method) focusing on the effect of reducing the power consumption by reducing the power consumption has been conventionally proposed, and a demand control device for realizing this method has also been proposed. (See Japanese Patent Application Laid-Open No. 11-332099).

In this demand control method, a plurality of types of operation control patterns for each load corresponding to the reduction rate of the electric energy are prepared, and a plurality of loads are turned on / off for a predetermined time in accordance with the operation control pattern corresponding to one reduction rate. Operation control is started, and during the control, the amount of power consumption from the start of operation to the current time is obtained by calculation, the expected power consumption after a certain period of time is calculated from the obtained power consumption, and the expected power consumption is calculated. This is a method in which the on / off operation control is performed according to an operation control pattern corresponding to the reduction rate by switching the reduction rate so that the amount does not exceed a preset use upper limit electric energy.

If this method is adopted, a time period (a fixed time)
It is thought that the load can be finely controlled from the start of the process, and if the load is an air conditioner, the environment is not changed as much as possible within the time limit.

[0008]

Even when the demand control method described above is adopted, if the time periods during which the demand control is performed continue, environmental changes are accumulated for each time period, and the demand control is performed. Environmental degradation necessarily occurs in the space where the air conditioner is installed.

As a result, application to a space where comfort is important is limited (for example, a reception room, an executive room, a president's office, etc. cannot often be subjected to demand control), and furthermore, demand control is performed. The burden is placed only on the target space, which causes a great inequality between the spaces.

[0010]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and has little or no deterioration in the environment of a space where comfort is important, and demand control can be performed for loads corresponding to other spaces. It is an object of the present invention to provide a power consumption control method and a power consumption control method capable of significantly reducing the occurrence of continuous power consumption and suppressing environmental degradation.

[0011]

According to a first aspect of the present invention, there is provided a power consumption control method for controlling an operation state of a load such that the total power consumption by all loads does not exceed a preset target power. In a control method, at least a part of a load (a load whose operating state is controlled) is divided into a first load to be subjected to demand control and a second load not to be subjected to demand control. A plurality of demand control levels are set for one load, and a priority order for performing the demand control is set for each first load.
Each time the power consumption is controlled, it is determined whether a control level equal to or higher than a predetermined level has occurred. In response to the determination that a control level equal to or higher than the predetermined level has not occurred, the priority order is determined. For only the first load determined based on
The demand control is performed so that the total power consumption does not exceed the target power, and in response to the determination that a control level equal to or higher than the predetermined level has occurred, the energy saving control is performed on the second load. And demand control for the first load so that the total power consumption does not exceed the target power.

According to a second aspect of the present invention, there is provided a method for controlling an operation state of a load so that a total of power consumption by all loads does not exceed a preset target power. A load (a load whose operating state is controlled) is subjected to a first load that performs a power consumption reduction operation according to a change in power consumption, and a change in the operating state results in a substantial state change regardless of the change in power consumption. And a second load that operates to reduce power consumption to an
A plurality of control levels at which the power consumption reduction operation is to be performed on the load are set, and a priority order at which the control for reducing the power consumption is performed is set for each first load, and the power consumption amount is controlled each time. Determining whether a control level equal to or higher than a predetermined level has occurred, and responding to the determination that no control level equal to or higher than the predetermined level has occurred, determining only the first load determined based on the priority order Control to reduce the power consumption so that the total power consumption does not exceed the target power. In response to the determination that a control level equal to or higher than the predetermined level has occurred, the second load On the other hand, control is performed to reduce the power consumption to such an extent that a change in the operating state does not cause a substantial state change, and the power consumption of the first load is reduced so that the total power consumption does not exceed the target power. Do It is a method to perform the control.

According to a third aspect of the present invention, there is provided a method for controlling the amount of power consumption, wherein the control of the amount of power consumption is performed for each unit time period, and whether or not a control level equal to or higher than a predetermined level is generated is performed for each unit time period. is there.

According to a fourth aspect of the present invention, there is provided a method for controlling an electric power consumption, wherein an air conditioner is employed as at least a part of the first load and the second load.

According to a fifth aspect of the present invention, there is provided a power consumption control apparatus for controlling an operation state of a load so that the total power consumption by all loads does not exceed a preset target power. Classifying means for classifying a load (a load whose operating state is controlled) into a first load to be subjected to demand control and a second load not to be subjected to demand control; Setting means for setting a priority level at which demand control is to be performed for each first load, and setting a control level equal to or higher than a predetermined level each time power consumption is controlled. Determining means for determining whether or not a demand level is controlled only for a first load determined based on priority in response to determination that a control level equal to or higher than a predetermined level has not occurred; The first operating means performs energy saving control on the second load in response to the determination that a control level equal to or higher than the predetermined level has occurred, and performs demand control on the first load. And second operating means to be performed.

According to a sixth aspect of the present invention, there is provided a power consumption control device for controlling an operation state of a load so that the total power consumption by all loads does not exceed a predetermined target power. A load (a load whose operating state is controlled) is subjected to a first load that performs a power consumption reduction operation according to a change in power consumption, and a change in the operating state results in a substantial state change regardless of the change in power consumption. And a plurality of control levels for performing the power reduction operation on the first load, and setting a plurality of control levels for performing the power reduction operation on the first load. Setting means for setting a priority order for performing control for reducing power; determining means for determining whether or not a control level equal to or higher than a predetermined level is generated every time control of the power consumption is performed; Level or higher In response to the determination that the control level has not occurred, control is performed to reduce the power consumption so that the total power consumption does not exceed the target power for only the first load determined based on the priority order. A first operating means for causing the second load to consume such an amount that the change in the operating state does not cause a substantial state change in response to the determination that the control level equal to or higher than the predetermined level has occurred. And a second operating means for causing the first load to perform control to reduce the power consumption so that the total power consumption does not exceed the target power.

According to a seventh aspect of the present invention, there is provided a control apparatus for controlling the amount of used electric power, wherein the first operating means and the second operating means are adapted to control the amount of used electric power at every unit time interval. That determines whether or not the control level is generated for each unit time period.

[0018] The power consumption control device according to claim 8 employs an air conditioner as at least a part of the first load and the second load.

[0019]

According to the power consumption control method of the first aspect, in controlling the operation state of the load so that the total power consumption by all the loads does not exceed a preset target power, at least a part of the load is controlled. Are divided into a first load that is a target of demand control and a second load that is not a target of demand control, a plurality of control levels of the demand control are set for the first load, and the first load is set. Priority for which demand control should be performed for each power level, and each time power consumption is controlled, it is determined whether a control level higher than a predetermined level has occurred. In response to the determination that the power consumption has not been performed, the demand control is performed only on the first load determined based on the priority order so that the total power consumption does not exceed the target power. In response to the determination that the control level has occurred, energy saving control is performed on the second load, and demand control is performed on the first load so that the total power consumption does not exceed the target power. Since the energy saving operation is performed on the second load, the surplus power with respect to the target power can be increased, and the continuous application of the demand control to the first load is greatly reduced. Thus, the state change due to the first load can be reduced.

According to the power consumption control method of claim 2,
In controlling the operation state of the loads so that the sum of the power consumption by all the loads does not exceed the preset target power, at least a part of the loads performs the power consumption reduction operation according to the transition of the power consumption. 1 load and a second load that performs an operation that reduces power consumption to such an extent that a change in the operating state does not cause a substantial state change regardless of the transition of the power consumption. A plurality of control levels at which power saving operation should be performed,
Priorities for performing control to reduce power consumption for each load are set in advance, and each time power consumption is controlled, it is determined whether a control level equal to or higher than a predetermined level has occurred,
In response to the determination that a control level equal to or higher than the predetermined level has not occurred, reduce the power consumption of only the first load determined based on the priority so that the total power consumption does not exceed the target power. In response to the determination that a control level equal to or higher than the predetermined level has occurred, the power consumption is such that a change in the operating state of the second load does not cause a substantial state change. And the first load is controlled to reduce the power consumption so that the total power consumption does not exceed the target power. Can reduce the power consumption to such an extent that no substantial state change is caused, so that the surplus power with respect to the target power can be increased. Greatly reduced Rukoto, it is possible to reduce the state change by the first load.

According to the power consumption control method of claim 3,
The control of the power consumption is performed for each unit time period, and the determination whether or not a control level equal to or higher than a predetermined level is performed is performed for each unit time period. The same operation as the first or second aspect can be achieved.

In the power consumption control method according to the fourth aspect,
Since the air conditioner is employed as at least a part of the first load and the second load, the air conditioner included in the first load is demand-controlled and the air conditioner belonging to the second load is controlled. On the other hand, energy saving control can be performed, and the same operation as any one of claims 1 to 3 can be achieved. By controlling the air conditioner, the deterioration of the comfort of the space to be air-conditioned can be significantly suppressed.

In the power consumption control device according to claim 5,
In controlling the operation state of the loads so that the sum of the power consumption by all the loads does not exceed the preset target power, at least some of the loads are divided into the first load to be demand-controlled by the classifying unit. , And a second load that is not subject to demand control.
A plurality of control levels of demand control are set for the first load, and a priority order for performing the demand control is set for each first load. It is determined whether a control level equal to or higher than a predetermined level has occurred. Then, in response to the determination that a control level equal to or higher than the predetermined level has not occurred, the first driving means performs demand control only on the first load determined based on the priority order, In response to the determination that a control level equal to or higher than the level has occurred, the second operation means causes the second load to perform energy saving control and causes the first load to perform demand control. be able to.

Therefore, by performing the energy saving operation on the second load, it is possible to increase the surplus electric power with respect to the target electric power, and it is possible to greatly reduce the continuous demand control on the first load. In addition, the state change due to the first load can be reduced.

In the power consumption control device according to claim 6,
In controlling the operation state of the loads so that the total power consumption by all loads does not exceed a preset target power, at least some of the loads are reduced by the classifying means according to the transition of the power consumption. It is divided into a first load for operation and a second load for operation in which power consumption is reduced to such an extent that a change in the operation state does not cause a substantial state change irrespective of the transition of power consumption. In addition, a plurality of control levels at which the power consumption reduction operation is to be performed for the first load are set, and a priority order for performing the control for reducing the power consumption is set for each first load, and the use order is determined by the determination means. Each time the power amount is controlled, it is determined whether a control level equal to or higher than a predetermined level has occurred.
Then, in response to the determination that a control level equal to or higher than the predetermined level has not occurred, the first driving means
Only the first load determined based on the priority order is controlled to reduce the power consumption so that the total power consumption does not exceed the target power, and it is determined that a control level equal to or higher than a predetermined level has occurred. In response to this, the second operating means controls the second load to reduce power consumption to such an extent that a change in operating state does not cause a substantial state change, and causes the first load to control the first load. In addition, control can be performed to reduce power consumption so that the total power consumption does not exceed the target power.

Therefore, by allowing the second load to perform control to reduce power consumption to such an extent that a change in the operating state does not cause a substantial change in state, it is possible to increase the marginal power with respect to the target power. The demand control is continuously reduced for one load.
The state change due to the first load can be reduced.

In the power consumption control device according to claim 7,
As the first operating means and the second operating means, means for controlling the amount of electric power used per unit time period are employed, and the determining means determines whether or not a control level equal to or higher than a predetermined level occurs. Since the operation performed for each time period is adopted, the same operation as that of claim 5 or claim 6 can be achieved by performing determination and control for each unit time period.

In the power consumption control device according to claim 8,
Since the air conditioner is employed as at least a part of the first load and the second load, the air conditioner included in the first load is demand-controlled and the air conditioner belonging to the second load is controlled. On the other hand, energy saving control can be performed, and the same operation as any one of claims 5 to 7 can be achieved. By controlling the air conditioner, the deterioration of the comfort of the space to be air-conditioned can be significantly suppressed.

[0029]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of a power consumption control method and apparatus according to the present invention;

FIG. 1 is a schematic diagram showing an air conditioning system to which the method for controlling the amount of electric power used according to the present invention is applied.

The air conditioning system includes a demand control unit 1, an energy saving control unit 2, a first load group 3 controlled by the demand control unit 1, and a second load group 4 controlled by the energy saving control unit 2. have. However, a load (not shown) controlled so as not to perform any operation for reducing power consumption may be included.

The first load group 3 is a plurality of loads that are controlled so as to perform a power consumption reduction operation in accordance with a transition of power consumption within a predetermined time period.

The second load group 4 includes a plurality of loads that are controlled to perform an operation for reducing power consumption to such an extent that a change in operating state does not cause a substantial state change regardless of a change in power consumption. It is.

Specifically, examples of the load include an air conditioner and a lighting device installed in a building, and for example, an air conditioner and a lighting device installed in a conference room, an office, a business meeting room, and the like. As one load group 3, air conditioners, lighting equipment, and the like installed in the president's office, executive office, reception room, and the like are classified as second load groups 4, respectively. Needless to say, a load (third load group) that is controlled so as not to perform the operation for reducing the power consumption at all may be present as necessary.

The demand control unit 1 includes a pulse counter 11 for obtaining a current demand by counting demand pulses supplied from the outside, a remaining time calculation unit 12 for calculating a remaining time of a predetermined time period, and a pulse counter 1.
A predicted power calculation unit 13 that calculates predicted power by using the count value of 1 and the remaining time calculated by the remaining time calculation unit 12; a target power storage unit 14 that holds a preset target power; A control necessity judging unit 15 for judging the necessity of the demand control by inputting the demand control target and the target power; a maximum control level storage unit 16 for holding the maximum control level of the demand control by inputting the demand control necessity judgment result as an input; And a first load control unit 17 that controls the first load group 3 by using the necessity determination result as an input.

Here, as shown in FIG. 6, when the demand time period is set to 30 minutes and the target power Pq and the elapsed time tr up to the present time are set as shown in FIG.
The remaining time can be calculated by subtracting the elapsed time tr from 0 minutes. Then, the predicted power Pf can be calculated from the difference ΔP between the current demand P and the immediately preceding demand and the difference time Δt. Note that a target current power described later can be obtained from a solid line determined based on the target power Pq.

For example, when the first load group 3 is an air conditioner, the first load control unit 17 performs control for suppressing the capacity of the compressor of each air conditioner for each demand control level (for example,
Information that instructs that an indoor unit to perform intermittent operation control (for example, control to perform a thinning operation when a plurality of air conditioners are installed) and the like. The demand control level is increased in response to the determination result indicating that the demand control is required, and each air conditioner is controlled based on the corresponding information. Specifically, the priority set according to the comfort required for each air conditioner (the higher the priority, the faster the power suppression control should be performed), the set temperature change width set for each air conditioner (See FIG. 2) and thermo-off instruction data (see FIG. 3) set for each air conditioner. Here, thermo-off means stopping of the air conditioner. Further, the plurality of demand control levels are set such that the higher the level, the stronger the power suppression.

The energy saving control unit 2 includes an energy saving control condition storage unit 21 for storing energy saving control conditions set in advance,
Control necessary / unnecessary to determine the necessity of energy saving control by inputting the remaining time calculated by the remaining time calculating unit 12, the maximum control level from the maximum control level storage unit 16, and the energy saving control condition from the energy saving control condition storage unit 21 A determination unit 22;
A second load control unit configured to control the second load group by inputting an energy saving control necessity determination result from the control necessity determination unit.

The second load control unit 23 controls each second load so as to perform the operation of reducing the power consumption to such an extent that the change in the operating state does not cause a substantial state change regardless of the transition of the power consumption. To control.

The operation of the air conditioning system having the above configuration will be described with reference to the flowcharts of FIGS. In addition,
4 is a flowchart illustrating demand control for the first load group 3, and FIG. 5 is a flowchart illustrating control selection processing.

First, the flowchart of FIG. 4 will be described.

In step SP1, the current demand is calculated. In step SP2, the magnitude of the current demand and the target current power and the magnitude of the predicted power and the target power are determined.

If it is determined that the current demand is equal to the target current power and the predicted power is equal to the target power, the demand control level is held in step SP3. Conversely, if it is determined in step SP2 that the current demand is different from the target current power and / or that the predicted power is different from the target power, the process proceeds to step SP2.
At 4, the demand control level is changed. Specifically, when the current power is larger than the target current power or the predicted power is larger than the target power, the demand power control level is changed to the demand control level larger by one level, and conversely, the current power is larger than the target current power. If the predicted power is smaller than the target power, the demand control level is changed to the demand control level smaller by one level.

When the processing in step SP3 or the processing in step SP4 is performed, the processing in step SP3 is performed.
In step SP5, the maximum demand control level is held, and in step SP6, a load control command for controlling each load belonging to the first load group 3 is output. In step SP7, it is within the time limit (for example, 30 minutes). Is not determined).

If it is determined that the current time is within the time limit, the process of step SP1 is performed again. Conversely, if it is determined in step SP7 that the current time is not within the time limit, the series of processing ends, and the processing returns to the original processing.

The process of this flowchart is performed at every control cycle (for example, a predetermined cycle of 10 seconds to 1 minute).

Next, the flowchart of FIG. 5 will be described.

In step SP1, it is determined whether or not the maximum demand control level in the previous time period is higher than a predetermined level and whether the energy saving control is being performed in the previous time period.

If it is determined that the maximum demand control level in the previous time period is higher than the predetermined level and that the energy saving control has not been performed in the previous time period, step S is executed.
At P2, an energy-saving control command for the second load group 4 is output. Here, the energy saving control command is to control each of the second loads so as to perform the operation of reducing the power consumption to such an extent that the change in the operating state does not cause a substantial state change regardless of the transition of the power consumption. This is a command for instructing.

Conversely, if it is determined in step SP1 that the maximum demand control level in the previous time period is lower than the predetermined level, or that it is determined that the energy saving control has been performed in the previous time period, or if the processing in step SP2 is performed. If so, in step SP3, demand control (see FIG. 4) is performed, and the determination in step SP1 is performed again.

Therefore, the energy saving control for the second load group 4 can be performed only when the determination condition of step SP1 is satisfied, and the first load group 3 can be controlled regardless of whether the determination condition of step SP1 is satisfied. Demand control can be performed.

The processing in the flowchart of FIG. 5 is performed at each time period.

In summary, by controlling the demand control level based on the magnitude of the current demand and the target current power and the magnitude of the predicted power and the target power,
The demand changes as shown by the one-dot chain line in FIG. 6 to achieve power suppression. If the predicted power is larger than the target power even when the power suppression is realized, the degree of power suppression is increased by increasing the demand control level.

By performing the above processing within a predetermined time period, the maximum demand control level can be obtained. Therefore, in the next time period, the maximum demand control level is higher than the predetermined level and By instructing the second load group 4 to perform the energy saving control on condition that the energy saving control is not performed in the time period, it is possible to reduce the total amount of electric power. Thus, it is possible to suppress environmental degradation due to continuous demand control at the same level.

In the above embodiment, it is determined whether or not a demand control level higher than a predetermined level has been generated. It is possible to determine whether or not the demand control levels higher than the level are continuous. In this case, the second load group 4 can also be a control target for power suppression, and the first load group 3
Inconvenience that the load concentrates on the space corresponding to (the environmental deterioration concentrates) can be greatly suppressed. However, even in this case, it is possible to prevent the control for power suppression for the second load group 4 from being performed continuously for two or more time periods. Further explanation will be given.

As the second load group 4, an air conditioner installed in a reception room, a president's office, a boardroom, an exhibition room, or the like is exemplified. From these air conditioners, select an air conditioner that can be targeted for energy saving control. If demand control based on a high demand control level was performed in the previous time period, only the time period By performing power suppression control on the air conditioner selected from the beginning of
The target of the power suppression control can be expanded, and the demand control level can be lowered.

Here, the power suppression control includes control for suppressing the capacity of the outdoor unit of the air conditioner to about 70%, control for thinning out a plurality of indoor units of the air conditioner, and some indoor units. Intermittent operation (for example, 3 minutes off / 7 minutes on)
For example, control that performs 3 minutes off / 27 minutes on) can be exemplified. In any case, by preventing the power suppression control from continuing for more than one time limit, the reception room, the president's office, and the executive office Therefore, the extent to which the comfort of the exhibition room is impaired can be minimized.

Also, priorities may be assigned to the air conditioners belonging to the second load group 4 so that the number of objects to be subjected to power suppression control can be increased or decreased according to the demand control level.
For example, when the demand control level is the maximum level, the power suppression control command is supplied to all the air conditioners, and when the demand control level is not the maximum level, the power suppression control is performed only for the air conditioners having a higher priority. What is necessary is just to supply a control command.

[0059]

According to the first aspect of the present invention, it is possible to increase the surplus power with respect to the target power by causing the second load to perform the energy saving operation, and the demand control is continuously applied to the first load. This has a unique effect that the state change due to the first load can be reduced significantly.

According to a second aspect of the present invention, the marginal power with respect to the target power is increased by causing the second load to perform control to reduce power consumption to such an extent that a change in the operating state does not cause a substantial state change. Therefore, it is possible to significantly reduce the possibility that the demand control is continuously applied to the first load, and to reduce the state change caused by the first load.

According to a third aspect of the present invention, the judgment for each unit time period,
By performing the control, the same effects as those of the first or second aspect can be obtained.

According to the fourth aspect of the present invention, it is possible to perform demand control on the air conditioner included in the first load and perform energy saving control on the air conditioner belonging to the second load. Accordingly, the same effect as any one of the third aspect can be obtained, and furthermore, by controlling the air conditioner, there is an effect that the deterioration of the comfort of the space to be air-conditioned can be greatly suppressed.

According to a fifth aspect of the present invention, it is possible to increase the margin power with respect to the target power by causing the second load to perform the energy saving operation, and to continuously apply the demand control to the first load. This has a unique effect that the state change due to the first load can be greatly reduced and the state change due to the first load can be reduced.

According to a sixth aspect of the present invention, the marginal power with respect to the target power is increased by causing the second load to perform control to reduce power consumption to such an extent that a change in the operating state does not cause a substantial state change. Therefore, it is possible to significantly reduce the possibility that the demand control is continuously applied to the first load, and to reduce the state change caused by the first load.

According to a seventh aspect of the present invention, the judgment for each unit time period is provided.
By performing the control, an effect similar to that of the fifth or sixth aspect is obtained.

According to the invention of claim 8, the demand control can be performed on the air conditioner included in the first load, and the energy saving control can be performed on the air conditioner belonging to the second load. Accordingly, the same effect as any one of the seventh aspect can be obtained, and furthermore, by controlling the air conditioner, there is an effect that deterioration of the comfort of the space to be air-conditioned can be significantly suppressed.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing an air-conditioning system to which a method of controlling power consumption according to the present invention is applied.

FIG. 2 is a diagram showing a set temperature change width set for each air conditioner.

FIG. 3 is a diagram showing thermo-off instruction data set for each air conditioner.

FIG. 4 is a flowchart illustrating a part of an embodiment of a power consumption control method according to the present invention.

FIG. 5 is a flowchart illustrating another part of the embodiment of the power consumption control method according to the present invention.

FIG. 6 is a diagram for explaining calculation of remaining time, calculation of predicted power, and calculation of target current power.

[Explanation of symbols]

 3 First load group 4 Second load group 15, 22 Control necessity determination unit 17 First load control unit 23 Second load control unit

Continued on the front page (72) Inventor Satoshi Hashimoto 1000-2 Oya, Okamoto-cho, Kusatsu-shi, Shiga Prefecture Daikin System Solutions Laboratory Co., Ltd. F-term (reference) 3L060 AA03 AA08 CC10 DD02 DD05 DD08 EE01 EE45 5G066 KA01 KA12 KB01 KD01 KD06

Claims (8)

[Claims] 1. A power consumption control method for controlling an operation state of a load such that a total of power consumption by all loads does not exceed a preset target power, wherein at least a part of the load is demand controlled. Are divided into a first load to be subjected to the demand control and a second load not to be subjected to the demand control, a plurality of control levels of the demand control are set for the first load, and the demand control is performed for each first load. Each time the power consumption is controlled, it is determined whether or not a control level equal to or higher than a predetermined level has occurred, and if a control level equal to or higher than the predetermined level has not occurred. In response to the determination, demand control is performed only on the first load determined based on the priority order so that the total power consumption does not exceed the target power, and a control level equal to or higher than a predetermined level is generated. In response to the determination that the power consumption has been determined to be performed, the energy saving control is performed on the second load, and the demand control is performed on the first load so that the total power consumption does not exceed the target power. Characteristic power consumption control method. 2. A power consumption control method for controlling an operation state of a load so that the total power consumption by all loads does not exceed a preset target power, wherein at least a part of the load is And a second load that performs an operation that reduces the power consumption to such an extent that a change in the operating state does not cause a substantial state change regardless of the change in the power consumption. A plurality of control levels for performing the power reduction operation on the first load are set, and a priority order for performing the control for reducing the power consumption is set for each first load. Each time the power consumption is controlled, it is determined whether or not a control level equal to or higher than a predetermined level has occurred. In response to the determination that a control level equal to or higher than the predetermined level has not occurred, priority is given. Based on ranking Control to reduce the power consumption so that the total power consumption does not exceed the target power, and responds to the determination that a control level equal to or higher than a predetermined level has occurred. Control to reduce power consumption to such an extent that a change in operating state does not cause a substantial change in state for the second load, and to ensure that the total power consumption for the first load does not exceed the target power. A power consumption control method characterized by causing a power consumption control to be performed. 3. The method according to claim 1, wherein the control of the power consumption is performed for each unit time period, and whether or not a control level equal to or higher than a predetermined level is generated is performed for each unit time period.
3. A method for controlling power consumption according to claim 1. 4. The power consumption control method according to claim 1, wherein at least a part of the first load and the second load is an air conditioner. 5. A power consumption control device for controlling an operation state of a load such that a total of power consumption by all loads does not exceed a preset target power, wherein at least a part of the load is demand controlled. And a second load (4) not subject to demand control. A plurality of control levels of demand control are set for the first load (3). Setting means for setting a priority order for performing demand control for each first load (3); and determining whether a control level equal to or higher than a predetermined level is generated each time control of power consumption is performed. Determining means for determining (15)
(22) In response to the determination that the control level equal to or higher than the predetermined level has not occurred, the first control that demand-controls only the first load (3) determined based on the priority order is performed. The driving means (17) controls the second load (4) to perform energy saving control in response to the determination that a control level equal to or higher than the predetermined level has occurred, and the first load (3) And a second operating means (17) (23) for performing demand control on the power consumption. 6. A power consumption control device for controlling an operation state of a load such that a total of power consumption by all loads does not exceed a preset target power, wherein at least a part of the load is controlled by power consumption. And the first load (3) performing the power consumption reducing operation in accordance with the transition of the power consumption, and performing the operation of reducing the power consumption to such an extent that a change in the operation state does not cause a substantial state change regardless of the transition of the power consumption. Classifying means for classifying the first load (3) into a plurality of control levels at which power consumption reduction operation is to be performed on the first load (3); Setting means for setting priorities for performing control to reduce, and determining means (15) for determining whether or not a control level equal to or higher than a predetermined level is generated each time the power consumption is controlled
(22) In response to the determination that no control level equal to or higher than the predetermined level has occurred, the total power consumption of the first load (3) determined based on the priority order is equal to the target power. A first operating means (17) for performing a control to reduce power consumption so as not to exceed a predetermined level; and a second load (4) in response to a determination that a control level equal to or higher than a predetermined level has occurred. On the other hand, control is performed to reduce power consumption to such an extent that a change in the operating state does not cause a substantial state change, and the first load (3)
Second operating means (17) for performing control to reduce power consumption so that the total power consumption does not exceed the target power.
(23) A power consumption control device comprising: 7. The first operating means (17) and the second operating means (17) (23) control the amount of electric power used per unit time, and the determining means (15) (22).
7. The power consumption control according to claim 5, wherein the control unit determines whether or not a control level equal to or higher than a predetermined level is generated for each unit time period. 8. The power consumption control device according to claim 5, wherein at least a part of the first load (3) and the second load (4) is an air conditioner.