JP2016034190A - Power management device, power management method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To mitigate reduction in comfort or convenience in a facility, in limiting operation of a facility apparatus to suppress power demand.SOLUTION: A power management device is configured so as to comprise: a power demand prediction unit for predicting power demand of a facility apparatus in a predetermined prediction period; a power demand determination unit for determining whether or not the predicted power demand is equal to or larger than a prescribed amount; a power control unit for performing control so that power consumption of a facility apparatus determined to be a power consumption reduction target is reduced in a control period corresponding to the prediction period, when it is determined that the predicted power demand is equal to or larger than the prescribed amount; and a facility apparatus determination unit for determining a facility apparatus to be a power consumption reduction target on the basis of priority order shown correspondingly to a time zone including the control period in facility apparatus priority order information in which priority order of a facility apparatus of a power consumption reduction target candidate is shown correspondingly to each predetermined time zone in one day.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a power management apparatus, a power management method, and a program.

There is known a contract power agreement between an electric power company and a customer called a demand contract.
In the demand contract, the demand power per unit time period called a demand time period is measured, and the contract power (demand target value) is determined according to the largest demand power among the measured demand powers.

The consumer controls the power consumption in the facility so as not to exceed the contract power determined as described above. Such control of power consumption is also called demand control.
The following configurations are known as demand control apparatuses that perform such demand control. That is, the demand control device predicts the power consumption integrated value for each of a plurality of demand time periods from the current demand time period to the demand time period a predetermined number of times based on the actual data of the power consumption integrated value for each environmental condition. Is calculated. And a demand control apparatus selects the apparatus which should stop driving | operation based on a predicted value and a target value, and controls it to stop the driving | running of the selected apparatus (for example, refer patent document 1).

JP 2008-11618 A

  As described above, the operation of the equipment is restricted depending on demand control, but the equipment to be controlled includes lighting equipment, air conditioning equipment, and the like. For this reason, depending on demand control, the comfort and convenience of the facility declines, such as the room becoming dark due to turning off the lighting equipment, or the room temperature becoming unsuitable due to the stop of the air conditioning equipment or changing the set temperature, etc. Resulting in.

  The present invention has been made in view of such circumstances, and an object of the present invention is to alleviate a decrease in comfort and convenience in facilities when restricting the operation of facility equipment in order to suppress power demand. And

  In order to solve the above-described problem, one aspect of the present invention is a demand power prediction unit that predicts demand power of equipment in a predetermined prediction period, and the demand power predicted by the demand power prediction unit is greater than or equal to a certain level. When it is determined that the demand power predicted by the demand power determination unit and the demand power determination unit is greater than or equal to a certain level, a power consumption reduction target in a control period corresponding to the prediction period The power control unit that controls the power consumption of the equipment determined to be reduced, and the priority order of the power equipment reduction target candidate equipment corresponding to each predetermined time period in one day are indicated. In the equipment / equipment priority information, the equipment / equipment determination that determines the equipment / equipment for power consumption reduction based on the priorities shown corresponding to the time periods including the control period. A power management device comprising and.

  Moreover, one aspect of the present invention is the power management apparatus described above, wherein the facility device priority order information indicates a priority for each time zone corresponding to each predetermined weather, and the facility device determination unit May determine the power consumption reduction target equipment on the basis of the priority order corresponding to the time zone including the control period and the weather predicted in the time zone.

  Further, one aspect of the present invention is the power management apparatus described above, wherein the facility equipment priority information includes a predetermined time period corresponding to each season period in which a year is divided based on a season. The equipment and equipment determination unit determines the equipment and equipment to be reduced in power consumption based on the priorities shown corresponding to the seasonal period including the current date and the time period including the control period. You may decide.

  According to another aspect of the present invention, a demand power prediction step that predicts demand power of equipment in a predetermined prediction period, and whether or not the demand power predicted by the demand power prediction step is greater than or equal to a certain level are determined. When it is determined that the demand power predicted by the demand power determination step and the demand power determination step is greater than or equal to a certain level, in the control period corresponding to the prediction period, In the power control step for controlling the power consumption to be reduced, and the facility equipment priority order information indicating the priority order of the candidate equipment for power consumption reduction corresponding to each predetermined time zone in one day, Equipment that determines equipment to be reduced in power consumption based on the priority shown corresponding to the time zone including the control period A power management method and a determination step.

  In addition, according to one aspect of the present invention, a demand power prediction step of predicting demand power of facility equipment in a predetermined prediction period and whether or not the demand power predicted by the demand power prediction step is greater than or equal to a certain level. When it is determined that the demand power predicted by the demand power determination step and the demand power determination step is greater than or equal to a certain value, the power consumption is determined as a power consumption reduction target in the control period corresponding to the prediction period. A power control step for controlling the power consumption of the equipment to be reduced, and a facility equipment priority order indicating the priority order of candidate equipment for power consumption reduction corresponding to each predetermined time zone in one day In the information, on the basis of the priority indicated corresponding to the time zone including the control period, the facility equipment subject to power consumption reduction Is a program for executing the equipment determining step of determining.

  As described above, according to the present invention, when the operation of the equipment is restricted in order to reduce the demand power, the effect of reducing the comfort and convenience in the facility can be obtained.

It is a top view which shows the example of arrangement | positioning of the equipment in the facility which the electric power management system in 1st Embodiment makes a management object. It is a figure which shows the structural example of the power management system in 1st Embodiment. It is a figure which shows the structural example of the power management apparatus in 1st Embodiment. It is a figure which shows the example of the content of the equipment apparatus priority order information in 1st Embodiment. It is a flowchart which shows the example of a process sequence which the power management apparatus in 1st Embodiment performs. It is a figure which shows the example of a memory content of the equipment apparatus priority order information storage part in 2nd Embodiment. It is a flowchart which shows the example of a process sequence which the power management apparatus in 2nd Embodiment performs. It is a figure which shows the example of a memory content of the equipment apparatus priority order information storage part in 3rd Embodiment. It is a flowchart which shows the example of a process sequence which the power management apparatus in 3rd Embodiment performs.

<First Embodiment>
[Example of equipment arrangement in equipment]
FIG. 1 is a plan view of a facility 1 in which equipment equipment to be managed by the power management system according to the present embodiment is provided. In the figure, an arrangement example of equipment in the facility 1 is shown.

The space in the facility 1 shown in the figure is divided into four areas, a west area ARW, a north area ARN, a south area ARS, and an east area ARE, according to the direction.
In the west area ARW, lighting equipment 10-1W and air conditioning equipment 10-2W are arranged as equipment. In the north area ARN, an illumination device 10-1N and an air conditioning device 10-2N are arranged as facility devices. In the south area ARS, lighting equipment 10-1S and air conditioning equipment 10-2S are arranged as equipment. In the east area ARE, lighting equipment 10-1E and air conditioning equipment 10-2E are arranged as equipment.

  In addition, said illumination device 10-1W, air-conditioning device 10-2W, illumination device 10-1N, air-conditioning device 10-2N, illumination device 10-1S, air-conditioning device 10-2S, illumination device 10-1E, air-conditioning device 10- When 2E is not particularly distinguished as equipment, it is described as equipment 10.

[Configuration example of power management system]
FIG. 2 shows an example of the overall configuration of a power management system that manages the equipment shown in FIG. In the figure, the same parts as those in FIG. The power management system shown in the figure corresponds to, for example, a BEMS (Building Energy Management System) that performs power management for a building including equipment.
In the figure, for the sake of simplicity of illustration, the positional relationship among the west area ARW, the north area ARN, the south area ARS, and the east area ARE corresponding to the direction is ignored.

  As shown in the figure, each of the equipment 10 provided in the facility 1 is connected to a commercial power source 2. That is, the equipment 10 in the facility 1 is a load that uses (consumes) the power supplied from the commercial power source 2.

In the present embodiment, a customer of the facility 1 has a demand contract with an electric power company that is a supply source of the commercial power source 2.
In the demand contract, the demand power per unit time period called a demand time period is measured, and the contract power for a certain period is determined according to the largest demand power among the measured demand powers. The demand time limit is, for example, 30 minutes.

The customer of the facility 1 needs to use the equipment 10 so that the power consumption in the facility 1 does not exceed the contract power. In order to respond to such a request, the power management apparatus 100 performs demand control for preventing power consumption in the facility 1 from exceeding contract power as power management in the facility 1.
The power management apparatus 100 according to the present embodiment measures the current demand power of the entire equipment device 10 by measuring the power at a predetermined measurement point Pm in the power system in which the commercial power supply 2 is connected to each equipment device 10. . Then, the power management apparatus 100 predicts demand power for a predetermined demand time period after the current demand time period including the current time based on the measured current demand power. Hereinafter, a case where the power management apparatus 100 predicts the demand power in the demand time period (an example of the prediction period) after the current demand time period will be described as an example.
And the power management apparatus 100 determines the equipment device 10 of the power consumption reduction object from the equipment devices 10, when the predicted demand power is a certain level or more. The power management apparatus 100 performs control so that the power consumption of the facility device 10 determined as the power consumption reduction target is reduced over a period corresponding to the next demand time limit. At this time, the power management apparatus 100 performs control such as stopping the operation of the facility device 10 targeted for power consumption reduction or changing the operation so that power consumption is reduced. As a specific example of the change in operation, when the facility device 10 to be reduced in power consumption is an air conditioner, the temperature is increased if it is cooled, and the temperature is decreased if it is heated. It is only necessary to change the operation corresponding to the tendency to reduce the power consumption, such as changing to に.

[Configuration example of power management device]
Next, a configuration example of the power management apparatus 100 will be described with reference to FIG. The power management apparatus 100 shown in the figure includes a communication unit 101, a control unit 102, and a storage unit 103.
The communication unit 101 performs communication with each of the facility devices 10.
The control unit 102 executes various controls for realizing the function as the power management apparatus 100. The function as the control unit 102 is realized, for example, by causing a CPU (Central Processing Unit) included in the power management apparatus 100 as hardware to execute a program.

  The control unit 102 includes a demand power prediction unit 121, a demand power determination unit 122, an equipment device determination unit 123, and a power control unit 124 as functional units corresponding to the demand control of the present embodiment.

The demand power prediction unit 121 predicts the power (demand power) required by the equipment 10 in the facility 1.
Specifically, the demand power prediction unit 121 according to the present embodiment measures the power of the measurement point Pm (FIG. 2) in the current demand time period (demand time period including the current time), so that the current total of the equipment 10 Measure demand electricity.
Then, the demand power prediction unit 121 predicts the demand power in the next demand period based on the power consumption measured in the current demand period as described above. For example, the demand power prediction unit 121 can predict the demand power in the next demand time period based on the transition state according to the passage of time of the product power measured in the current demand time period.

The power demand determination unit 122 determines whether the power demand predicted by the power demand prediction unit 121 is equal to or greater than a certain level. Specifically, in the power management system of the present embodiment, a warning value based on a value smaller than the contract power is determined based on the contract power. The fact that the demand power predicted by the demand power prediction unit 121 reaches a warning value indicates that the possibility that the actual demand power exceeds the contract power is quite high.
Therefore, the demand power determination unit 122 of the present embodiment is configured to determine whether or not the demand power predicted by the demand power prediction unit 121 is greater than or equal to a warning value.

  In response to the demand power predicted by the power demand determination unit 122 being determined to be greater than or equal to the warning value, the facility equipment determination unit 123 consumes power for suppressing power consumption in the next demand time period (an example of a control period). The equipment 10 to be reduced is determined.

Specifically, the facility device determination unit 123 determines the power consumption reduction target facility device 10, and a reduced power consumption target value that is the total power consumption of the facility device 10 to be reduced in the facility 1 in the next demand time period. Ask for.
As an example, the facility equipment determination unit 123 can obtain the reduced power consumption target value based on the demand power and the warning value of the next demand time period predicted by the demand power determination unit 122, for example. More specifically, the facility device determination unit 123 can obtain the difference between the demand power of the next demand time period predicted by the demand power determination unit 122 and the warning value as the reduced power consumption target value. Alternatively, the facility device determination unit 123 obtains a value obtained by adding a predetermined margin to the difference between the demand power of the next demand time period predicted by the demand power determination unit 122 and the warning value as the reduced power consumption target value. Also good.

  Then, the equipment / equipment determination unit 123 uses the reduction power consumption target value obtained as described above and the equipment / equipment priority information stored in the equipment / equipment priority information storage unit 131 in the storage unit 103 to reduce power consumption. The equipment 10 is determined.

Here, FIG. 4 shows an example of the contents of the equipment device priority information stored in the equipment device priority information storage unit 131.
As shown in the figure, the equipment device priority order information has a structure in which equipment names, equipment identifiers, control contents, reduced power consumption, and priorities are associated with each equipment device 10 in the facility 1.

The device name indicates the name of the corresponding facility device 10. For example, the device name “East Area Lighting Device” on the first line indicates the lighting device 10-1E provided in the East Area ARE.
The device identifier is an identifier assigned to the corresponding facility device 10.
The control content indicates the content of control to be executed by the power management apparatus 100 in order to reduce the power consumption of the corresponding equipment 10. For example, when the corresponding equipment device 10 is a lighting device, the control content indicates that control such as turning off the lighting device or reducing the illuminance of the lighting device by a predetermined light reduction amount should be executed.
The reduced power consumption indicates a reduction in power consumption obtained by the corresponding facility device 10 by performing control according to the corresponding control content.

The priority order is a priority order as a power consumption reduction target determined for the corresponding equipment 10. The priority order of the present embodiment is determined for each predetermined time zone in which one day is divided. In the example shown in the figure, one day is from 6:00 to 12:00, 12: 00 to 15:00, 15: 00 to 18:00, 18: 00 to (next day) 6:00. A sectioned example is shown.
The time zone from 6:00 to 12:00 corresponds to the morning. The time zone from 12:00 to 15:00 corresponds to the daytime in the afternoon. The time zone from 15:00 to 18:00 corresponds to the evening in the afternoon. 18:00 to 6:00 corresponds to nighttime.

The priorities for each of the four time zones divided as described above are determined based on the state of the area in which the corresponding equipment 10 is provided and the sunshine conditions in the corresponding time zone.
For example, pay attention to the time zone from 12:00 to 15:00. The time zone from 12:00 to 15:00 corresponds to the daytime in the afternoon, and the solar radiation intensity is the strongest in the day as the sunshine condition. In addition, in the south area ARS facing south, the solar radiation intensity is stronger than in other areas, so that a brighter state than in other areas can be obtained. Therefore, the importance of lighting the lighting device 10-1S in the time zone from 12:00 to 15:00 is low.
On the other hand, in the south area ARS, since the solar radiation intensity is stronger than in the other areas, the room temperature becomes higher, so the importance of air conditioning (cooling) is high.
Based on such a reason, in the time zone from 12:00 to 15:00, the priority of the lighting device 10-1S (south area lighting device) is set to 1 and is set highest, and the air conditioning device 10-2S The priority of (South Area Air Conditioning Equipment) is set to 8 and the lowest.

In addition, for other time zones, priorities are set based on the necessity of each facility device 10 according to the area state according to the sunshine condition. As a result, the priority order for each equipment device 10 indicated in the equipment device priority information differs between the time zone categories.
Thus, in the equipment device priority order information of the present embodiment, the priority order for the candidate equipment device 10 to be reduced in power consumption is shown corresponding to each predetermined time zone in one day.
In the facility equipment priority information, the priority does not necessarily have to be different among all time zones. For example, in an environment where there is no particular change in sunshine conditions between the time zone of 15:00 to 18:00 and the time zone of 18:00 to 6:00, the priority order in each time zone is the same. There is also.

  Moreover, in the same figure, the example in which the priority order information for all the equipment devices 10 provided in the facility 1 is stored in the equipment device priority information is shown. However, among facility equipment, for example, there is a case where there is a facility device that is required to perform a steady and stable operation and cannot be subject to demand control. Thus, equipment that cannot be subject to demand control may be excluded from candidates and not stored in the equipment priority information.

  The equipment device determination unit 123 refers to the priority of the time zone in which the next demand time period that is the control period is included in the equipment equipment priority order information. Then, the equipment is sequentially selected according to the priority order until the total reduced power consumption becomes equal to or greater than the previously obtained reduction power consumption target value. The equipment selected as described above is the equipment determined as the power consumption reduction target.

The power control unit 124 performs control so that the power consumption of the facility device 10 determined as the power consumption reduction target by the facility device determination unit 123 is reduced in the next demand time period (control period).
For this reason, the power control unit 124 executes control indicated by the control content indicated in the equipment device priority information corresponding to each equipment device 10 determined as the power consumption reduction target. For example, if the control content indicates that the lighting device is turned off, the power control unit 124 performs control so that the power consumption reduction target equipment device 10 is turned off by performing communication via the communication unit 101. .

By executing demand control as described above, in the present embodiment, 6:00 to 12:00, 12:00 to 15:00, 15: 0 to 18:00, and 18:00 in one day. Corresponding to each time zone of 6:00, for example, operation is restricted in order from the less important equipment 10.
Thereby, for example, compared with the case where the priority order of the candidate equipment for power consumption reduction is fixed in demand control, in this embodiment, the degree to which the comfort and convenience of the user in the facility is impaired is alleviated. The

  The storage unit 103 stores various information used by the control unit 102. The storage unit 103 shown in the figure includes an equipment device priority order information storage unit 131. As can be understood from the above description, the equipment device priority order information storage unit 131 stores equipment equipment priority order information.

[Example of processing procedure]
Next, an example of a processing procedure executed by the power management apparatus 100 according to this embodiment will be described with reference to the flowchart of FIG.
The demand power prediction unit 121 in the power management apparatus 100 predicts demand power for the next demand time period in the current demand time period (step S101).
Next, the demand power determination unit 122 determines whether or not the demand power predicted in step S101 is equal to or greater than a predetermined warning value (step S102).

  When the predicted demand power is less than the warning value (step S102—NO), the demand control for reducing the power consumption of the equipment 10 is not particularly executed, and the process shown in FIG.

On the other hand, when the predicted power demand is greater than or equal to the warning value (step S102—YES), the equipment device determination unit 123 calculates a reduced power consumption target value (step S103).
As described above, the reduction power consumption target value is the total power consumption by the equipment 10 in the facility 1 to be reduced in the next demand time period. In addition, as described above, the facility device determination unit 123 can calculate the reduced power consumption target value by using the demand power of the next demand period predicted by the demand power determination unit 122 and the warning value.

Next, the equipment / equipment determining unit 123 uses the equipment / equipment priority information stored in the equipment / equipment priority information storage unit 131 and the power consumption target value calculated in step S103 to determine the power consumption reduction target. The equipment 10 is determined.
Specifically, the facility equipment determination unit 123 sets the minimum number that satisfies the target value for reduced power consumption according to the priority order shown in the equipment equipment priority order information corresponding to the time zone including the next demand time period (control period). Equipment device 10 is selected (step S104). In other words, the facility device determination unit 123 sequentially selects the facility devices 10 according to the above priority order until the total reduced power consumption becomes equal to or greater than the reduced power consumption target value. The equipment 10 selected in this way is the equipment determined as the power consumption reduction target.

Here, the processing from step S101 to S104 is executed within the same current demand time period and its period. The power control unit 124 waits until the next demand time limit is reached after the power consumption reduction target equipment 10 is determined by the process of step S104 (NO in step S105).
Then, the power control unit 124 consumes the power so that the power consumption of the equipment 10 determined as the power consumption reduction target in step S104 is reduced as the next demand time limit is reached (YES in step S105). Each operation of the equipment 10 determined as the power reduction target is controlled. At this time, the power control unit 124 may control each operation of the equipment 10 according to the control content stored in the equipment priority information as described above.

Second Embodiment
[Overview]
Next, a second embodiment will be described. Even in the same time zone during the day, sunshine conditions vary depending on the weather at that time. That is, if the weather is fine, the sunshine time is increased and the sunshine intensity is increased. However, in cloudy or rainy, the sunshine time is shortened and the sunshine intensity is also decreased as compared to when it is sunny.
Thus, the fact that the sunshine conditions differ according to the weather means that the importance of the operation of the equipment 10 provided in each area of the facility 1 also differs according to the weather even in the same time zone. That is. That is, according to the weather, the priority order of the candidate equipment devices 10 to be reduced in power consumption also changes.

Therefore, in the second embodiment, the facility device priority order information storage unit 131 stores the facility device priority order that reflects the priority order determined for each combination of time zone and weather in one day. .
The facility device determination unit 123 then consumes power according to the priority indicated by the facility device priority information corresponding to the weather predicted in the next demand time period (control period) and the time zone including the next demand time period. Determine the equipment to be reduced.

  With such a configuration, in the present embodiment, it is possible to determine the facility device 10 that is suitable not only for the time zone in one day but also for the weather as a power consumption reduction target. Thereby, the fall of the comfort and convenience by demand control can further be suppressed.

[Equipment priority information]
The configuration of the power management apparatus 100 in the second embodiment may be the same as in FIG. However, in the present embodiment, the contents of the equipment device priority information stored in the equipment device priority information storage unit 131 are different from those in FIG.

FIG. 6 shows an example of stored contents of the equipment device priority order information storage unit 131 in the second embodiment.
As shown in the figure, the equipment device priority order information storage unit 131 of the present embodiment stores first weather compatible equipment device priority information and second weather compatible equipment device priority information.
The first weather compatible facility device priority order information is facility device priority order information indicating a priority order determined corresponding to a case where the weather is fine.
The second weather-compatible equipment priority information is determined in correspondence with the weather where the sunshine conditions such as sunshine hours and sunshine intensity are not as good as in clear weather, such as cloudy or rainy (including snow). Equipment priority order information indicating the priority order.
Note that the structures of the first weather-compatible equipment device priority information and the second weather-compatible equipment device priority information may be the same as those in FIG. However, as described above, there is a time zone in which different priorities are indicated in the first weather-compatible facility device priority information and the second weather-compatible facility device priority information.

[Example of processing procedure]
With reference to the flowchart of FIG. 7, an example of a processing procedure executed by the power management apparatus 100 according to the second embodiment will be described. In FIG. 7, steps that are the same as those in FIG. 5 are denoted by the same reference numerals, and steps different from those in FIG. 5 will be mainly described.

When the demand power predicted in step S101 is greater than or equal to the warning value (step S102-YES), the equipment device determination unit 123 calculates the reduced power consumption target value (step S103) and further executes the following processing. To do.
That is, the equipment device determination unit 123 acquires weather information indicating the prediction result of the weather in the time zone corresponding to the next demand time period (step S111). For example, the facility device determination unit 123 can acquire weather information from a weather information server that provides weather information on the network via the communication unit 101.
Next, the equipment device determining unit 123 is acquired in step S111 from the first weather-compatible equipment device priority information and the second weather-compatible equipment device priority information stored in the equipment device priority information storage unit 131. The equipment device priority order information corresponding to the weather indicated by the weather information is acquired (step S112).
Specifically, if the weather indicated by the weather information acquired in step S111 is clear, the equipment device determination unit 123 selects the first weather-compatible equipment device priority information. Moreover, if the weather indicated by the weather information acquired in step S111 is cloudy or rainy, the facility device determination unit 123 selects the second weather-compatible facility device priority information.

Then, the equipment device determination unit 123 calculates the reduction calculated in step S103 according to the priority order indicated in the time zone including the next demand time period in the equipment device priority order information selected in step S112. The minimum number of equipment that satisfies the power consumption target value is selected (step S104A).
Subsequent steps S105 and S106 may be the same processing as in FIG.
By performing such processing, in the second embodiment, the operation of the facility device 10 determined as the power consumption reduction target according to the time zone and the weather is controlled.

<Third Embodiment>
[Overview]
Subsequently, the third embodiment will be described. For example, even in the same time zone during the day, the sunshine conditions vary depending on the season. That is, even in the same daytime period, for example, even in the same fine weather, the solar radiation intensity is strong in summer, and the solar radiation intensity is weaker than summer in the middle of spring or autumn. In winter, the solar radiation intensity is weaker than in the mid-term.
Thus, the fact that the sunshine conditions differ according to the weather means that the importance of the operation of the equipment 10 in each area in the facility 1 also differs depending on the weather even in the same time zone. is there.

Specifically, since the south area ARS shown in FIG. 1 is a south-facing space, the temperature is considerably high during the summer. For this reason, it is necessary to avoid stopping or weakening the air conditioning (cooling) of the air conditioner 10-2S in the south area ARS as much as possible. Therefore, the priority as a candidate for the power consumption reduction target of the air conditioner 10-2S is considerably low. On the other hand, in winter, the south area ARS becomes warm to some extent during the daytime, so there is room to stop or weaken the air conditioning (heating). In this case, the priority as a candidate for the power consumption reduction target of the air conditioner 10-2S can be set high.
In addition, since the sunshine intensity is not as strong in the north area ARN as in the south area ARS even in summer, the room temperature is not as high as in the south area ARS. In this case, in the north area ARN, there is room for stopping or weakening the air conditioning (heating) of the air conditioner 10-2N. Therefore, the priority as a candidate for the power consumption reduction target of the air conditioner 10-2N may be increased. On the other hand, since the temperature in the north area ARN in winter is considerably lower than that in the south area ARS, it is necessary to avoid stopping or weakening the air conditioning (heating) of the air conditioner 10-2N as much as possible. Therefore, the priority as a candidate for the power consumption reduction target of the air conditioner 10-2N is considerably low.
In this way, the priority order of the facility equipment 10 that is a candidate for power reduction in demand control varies depending on the season.

Therefore, in the third embodiment, a seasonal period in which one year is divided based on the season is determined. In the present embodiment, a case where three season periods, that is, a summer period, a winter period, and an intermediate period due to spring and autumn, are defined as seasonal periods.
In addition, in the third embodiment, the equipment device priority order information storage unit 131 reflects the equipment device priority order reflecting the priority order determined for each combination of the weather and the seasonal period as necessary even in the same time zone. To remember.
Then, the equipment device determination unit 123 responds to the seasonal period including the current date, the weather predicted for the next demand time period, and the time zone including the next demand time period (control period). In accordance with the priority order indicated by the priority order information, a facility device targeted for power consumption reduction is determined.

  With such a configuration, in the present embodiment, it is possible to determine an appropriate equipment device 10 as a power consumption reduction target corresponding to not only the time zone and weather in one day but also the season at that time. As a result, it is possible to further alleviate the decrease in comfort and convenience due to demand control.

[Equipment priority information]
The configuration of the power management apparatus 100 in the third embodiment may be the same as in FIG. However, in the present embodiment, the contents of the equipment device priority information stored in the equipment device priority information storage unit 131 are different from those in FIG.

FIG. 8 shows an example of stored contents of the equipment device priority order information storage unit 131 in the third embodiment.
As shown in the figure, the equipment device priority order information storage unit 131 of the present embodiment first corresponds to each season period, summer equipment-equipped equipment priority information, winter equipment-equipped equipment priority information, and mid-term equipment. Three pieces of equipment device priority information are stored together with the equipment device priority information.
The summer equipment-equipped equipment priority information is equipment equipment priority information indicating priorities determined corresponding to the seasonal period corresponding to the summer.
The winter-adaptive facility equipment priority information is equipment-equipment priority information indicating a priority order determined corresponding to a seasonal period corresponding to the winter season.
The interim equipment priority order information is equipment priority information indicating a priority order determined corresponding to a seasonal period corresponding to the interim period (spring or winter).

  In addition, each of the summer compatible equipment priority information, the winter compatible equipment priority information, and the intermediate compatible equipment priority information includes the first weather compatible equipment priority information and the second weather compatible equipment priority information. Including.

  That is, the equipment device priority information stored in the equipment device priority information storage unit 131 in the third embodiment is subject to demand control depending on the combination of the season period, the weather, and the time of day. Indicates the priority order for the equipment.

[Example of processing procedure]
Next, an example of a processing procedure executed by the power management apparatus 100 according to the third embodiment will be described with reference to the flowchart of FIG. 9, steps that are the same as those in FIG. 7 are denoted by the same reference numerals, and steps that are different from those in FIG. 7 will be mainly described.

When the demand power predicted in step S101 is greater than or equal to the warning value (step S102-YES), the equipment device determination unit 123 calculates the reduced power consumption target value (step S103) and further executes the following processing. To do.
In other words, the facility device determination unit 123 selects the current time among the facility device priority order information corresponding to summer, the facility device priority information corresponding to winter, and the facility device priority information corresponding to intermediate period stored in the facility device priority information storage unit 131. Facility equipment priority order information corresponding to the seasonal period including the date is selected (step S121).

Next, the facility equipment determination unit 123 executes the following processing after acquiring weather information in a time zone corresponding to the next demand time period in step S111.
In other words, the facility device determination unit 123 selects the first weather-compatible facility device priority information and the second weather-compatible facility device priority information included in the seasonal device-compatible facility device priority information selected in step S121. The equipment device priority order information corresponding to the weather indicated by the weather information acquired in step S111 is selected (step S112A).
Then, the facility device determination unit 123 calculates the reduction calculated in step S103 according to the priority order indicated in the time zone including the next demand time period in the facility device priority order information selected in step S112A. The minimum number of equipment that satisfies the power consumption target value is selected (step S104A).
Subsequent steps S105 and S106 may be the same processing as in FIG.
By executing the processing as described above, in the third embodiment, the facility device 10 that is the target of power consumption reduction is determined according to the combination of the time zone, the weather, and the seasonal period, and the determined facility device 10 Operation is controlled.

<Modification>
As a modification of the third embodiment, the equipment is determined according to the equipment priority information indicating the priority according to the combination of the time zone and the seasonal period by excluding the weather from the combination of the time zone, the weather, and the seasonal period. The unit 123 may determine a facility device for which power consumption is to be reduced.

In addition, as a modification of the first to third embodiments, after detecting the number of people in each area and changing the priority indicated by the equipment device priority information according to the detected number of people, The facility device determination unit 123 may determine a facility device whose power consumption is to be reduced.
For example, even if the equipment has a low priority determined by the equipment priority information, if there is no user in the corresponding area, there is no particular problem even if the operation of the equipment is stopped. On the other hand, even in the case of equipment with high priority determined by equipment equipment priority information, if there are many users in the area, operation of the equipment is stopped or operation is restricted. It is not preferable to do so.
If it is the structure of the above modifications, the priority which equipment apparatus priority information shows according to the number of persons in an area will be changed suitably. Thereby, about the installation apparatus with which the low priority is defined by the installation apparatus priority information, a driving | operation can be restrict | limited if a user does not exist in an applicable area. Alternatively, if there are many users in a corresponding area for a facility device for which a high priority is determined by the facility device priority information, it is possible not to restrict the operation of the facility device.

Moreover, in each embodiment, the facility 1 shown in FIG. 1 has given the example which has one floor, for example. However, the facility may have a plurality of floors, for example, and the power management apparatus 100 of the present embodiment may be configured to control the equipment on each floor. In addition, the facility may include a plurality of buildings installed at physically separated locations, and the power management apparatus 100 according to the present embodiment may be configured to control the equipment in each building.
In addition, the equipment device priority order information storage unit 131 stores the equipment device priority order information that sets different priorities as needed for each floor or building based on the fact that the sunshine conditions are different for each floor or building. Then, the power management apparatus 100 may be able to determine an appropriate power equipment reduction target equipment for each floor or building based on the equipment priority information.
Also, in the description of the embodiments so far, a power management system that reduces the power consumption of facility equipment in order to reduce the demand power under demand control to prevent exceeding the contract power by the demand contract. An example is given. However, the configuration of the present embodiment can also be applied to a power management system that reduces power consumption of facility equipment in order to save power independently, for example, other than demand control.
Moreover, although the embodiment so far has exemplified the application example in BEMS, the configuration of the power consumption reduction target equipment and the configuration of power consumption control according to this embodiment is, for example, the power management in a house. It can also be applied to HEMS (Home Energy Management System).

  Note that a program for realizing the functions of the power management apparatus 100 described above is recorded on a computer-readable recording medium, and the program recorded on the recording medium is read into a computer system and executed, thereby executing the power described above. You may perform the process as the management apparatus 100. FIG. Here, “loading and executing a program recorded on a recording medium into a computer system” includes installing the program in the computer system. The “computer system” here includes an OS and hardware such as peripheral devices. The “computer system” may include a plurality of computer devices connected via a network including a communication line such as the Internet, WAN, LAN, and dedicated line. The “computer-readable recording medium” refers to a storage device such as a flexible medium, a magneto-optical disk, a portable medium such as a ROM and a CD-ROM, and a hard disk incorporated in a computer system. As described above, the recording medium storing the program may be a non-transitory recording medium such as a CD-ROM. The recording medium also includes a recording medium provided inside or outside that is accessible from the distribution server in order to distribute the program. The code of the program stored in the recording medium of the distribution server may be different from the code of the program that can be executed by the terminal device. That is, the format stored in the distribution server is not limited as long as it can be downloaded from the distribution server and installed in a form that can be executed by the terminal device. Note that the program may be divided into a plurality of parts, downloaded at different timings, and combined in the terminal device, or the distribution server that distributes each of the divided programs may be different. Furthermore, the “computer-readable recording medium” holds a program for a certain period of time, such as a volatile memory (RAM) inside a computer system that becomes a server or a client when the program is transmitted via a network. Including things. The program may be for realizing a part of the functions described above. Furthermore, what can implement | achieve the function mentioned above in combination with the program already recorded on the computer system, what is called a difference file (difference program) may be sufficient.

  As mentioned above, although embodiment of this invention was explained in full detail with reference to drawings, the concrete structure is not restricted to this embodiment, The design etc. of the range which does not deviate from the summary of this invention are included.

  DESCRIPTION OF SYMBOLS 1 Facility, 2 Commercial power supply, 10 Equipment apparatus, 100 Power management apparatus, 101 Communication part, 102 Control part, 103 Storage part, 121 Demand power prediction part, 122 Demand power determination part, 123 Equipment apparatus determination part, 124 Power control part 131 Equipment Equipment Priority Information Storage Unit

Claims (5)

A power demand forecasting unit for forecasting power demand of equipment in a predetermined forecast period;
A demand power determination unit for determining whether the demand power predicted by the demand power prediction unit is a certain level or more;
When the demand power predicted by the demand power determination unit is determined to be a certain level or more, the power consumption of the equipment determined as the power consumption reduction target is reduced in the control period corresponding to the prediction period. A power control unit for controlling
The priority indicated in correspondence with the time zone including the control period in the equipment device priority order information indicating the priority order of the candidate equipment for power consumption reduction corresponding to each predetermined time zone in one day A power management apparatus comprising: a facility equipment determination unit that determines equipment for power consumption reduction based on the ranking. The facility equipment priority information is indicated for each time zone in which priority is given corresponding to each predetermined weather,
The equipment device determination unit
The power management apparatus according to claim 1, wherein a power consumption reduction target facility device is determined based on a priority order corresponding to a time zone including the control period and weather predicted in the time zone. The facility equipment priority information is indicated for each predetermined time zone in correspondence with each season period in which a year is divided based on the season,
The equipment device determination unit
The power management according to claim 1 or 2, wherein a facility device subject to power consumption reduction is determined based on a priority order corresponding to a seasonal period including a current date and a time period including the control period. apparatus. A power demand prediction step for predicting power demand of equipment in a predetermined forecast period;
Demand power determination step for determining whether or not the demand power predicted by the demand power prediction step is greater than or equal to a certain level;
When it is determined that the demand power predicted by the demand power determination step is a certain level or more, the power consumption of the equipment determined as the power consumption reduction target is reduced in the control period corresponding to the prediction period. A power control step to control
The priority indicated in correspondence with the time zone including the control period in the equipment device priority order information indicating the priority order of the candidate equipment for power consumption reduction corresponding to each predetermined time zone in one day And a facility equipment determination step for determining a facility equipment subject to power consumption reduction based on the ranking. On the computer,
A power demand prediction step for predicting power demand of equipment in a predetermined forecast period;
Demand power determination step for determining whether or not the demand power predicted by the demand power prediction step is greater than or equal to a certain level;
When it is determined that the demand power predicted by the demand power determination step is a certain level or more, the power consumption of the equipment determined as the power consumption reduction target is reduced in the control period corresponding to the prediction period. A power control step to control
The priority indicated in correspondence with the time zone including the control period in the equipment device priority order information indicating the priority order of the candidate equipment for power consumption reduction corresponding to each predetermined time zone in one day A facility device determination step for determining a facility device for which power consumption is to be reduced based on the ranking.

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