JP2008236913A - Power control system, demand controller, demand program, and power control method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power control system where probability that power exceeds target power is reduced, the number of stop times of a facility device is reduced for suppressing maximum power consumption and a plan for previously peak cutting can be made, and to provide a demand controller, a demand program and a power control method. <P>SOLUTION: The power control system 1 includes an aggregate 100 formed of a plurality of facilities 10 having the facility devices 11 and a controller 20 for controlling total power consumption of the aggregate 100. Each facility 10 operates the facility device 11, based on schedule time information. Each facility 10 transmits schedule time information to the controller 20. When total power consumption of the aggregate 100, which is predicted from schedule time information, exceeds target power, the controller 20 changes schedule time information of each facility and transmits it to each facility 10. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power control system, a demand controller, a demand program, and a power control method.

  2. Description of the Related Art Conventionally, there is known a demand contract method that is one of contract methods for electricity charges performed between a store or facility owner and an electric power company. In the demand contract method, power consumption is calculated for each predetermined time period (hereinafter referred to as demand time period, for example, 30 minutes), and the demand time period within one year is traced back from the time period. The contract fee is set based on the maximum power consumption of the power consumption. For this reason, it is desirable for the owner of a store or facility to keep power consumption low during one demand period.

In view of this, a power control system has been proposed in which target power is set, and when the power consumption exceeds the target power, the equipment is stopped to suppress power consumption. According to such a system, it is possible to make it difficult for the power consumption to exceed the target power, and it is possible to reduce the maximum power consumption and reduce the contract fee (see Patent Document 1).
JP 2004-120919 A

  However, according to the apparatus described in Patent Document 1, the equipment must be stopped in order to reduce the maximum power consumption. Further, in order to prevent the power consumption from exceeding the target power, the power must be calculated for each demand period, and a real-time calculation process must be performed. Real-time processing refers to predicting future power consumption periodically (for example, with a short period of one minute) from past power consumption.

  In view of the above problems, the present invention reduces the probability of exceeding the target power, reduces the number of stoppages of the equipment when suppressing the maximum power consumption, and makes a plan that can realize the peak cut in advance. It is an object of the present invention to provide a power control system, a demand controller, a demand program, and a power control method capable of performing the above.

  The power control system of the present invention is a power control system that prevents the total power consumption from exceeding the target power of the aggregate by predicting the total power consumption of the aggregate composed of a plurality of sets having equipment. In addition, when the total power consumption in the aggregate is predicted based on the scheduled time information indicating the operation schedule of each facility device, and the predicted total power consumption exceeds the target power, the scheduled time information of each facility device At least one of the above is changed.

  According to the power control system of the present invention, the total power consumption in the aggregate is predicted based on the scheduled time information indicating the schedule of the operation of each facility device included in the aggregate. For this reason, it is not necessary to perform power calculation processing in real time by measuring the power consumption of each facility device, and future power consumption can be predicted from the scheduled time information. Further, when the predicted total power consumption exceeds the target power, at least one of the scheduled time information of each facility device is changed. For this reason, the time zone of the power consumption peak of each facility device 11 estimated from the scheduled operation time can be shifted, and the maximum power consumption can be suppressed without stopping the facility device. Therefore, it is possible to reduce the probability of exceeding the target power, to reduce the number of stoppages of the equipment when suppressing the maximum power consumption, and to make a plan that can realize the peak cut in advance.

  Further, the power control system of the present invention is a power control system including an aggregate composed of a plurality of sets having equipment and a demand controller for controlling the total power consumption of the aggregate. A receiver that receives the scheduled time information indicating the schedule of the operation of each equipment device transmitted from the receiver, and the total power consumption that predicts the aggregate power consumption based on the scheduled time information from each set received by the receiver. When the total power consumption predicted by the power consumption prediction unit and the total power consumption prediction unit exceeds the target power of the aggregate, change at least one of the scheduled time information of each facility device to change the total consumption A device scheduled time changing unit that prevents the power from exceeding the target power, and a scheduled time transmitting unit that transmits the scheduled time information changed by the device scheduled time changing unit to each set. It is characterized in.

  According to this power control system, the total power consumption in the aggregate is predicted based on the scheduled time information indicating the schedule of the operation of each facility device included in the aggregate. For this reason, it is not necessary to perform power calculation processing in real time by measuring the power consumption of each facility device, and future power consumption can be predicted from the scheduled time information. Further, when the predicted total power consumption exceeds the target power, at least one of the scheduled time information of each facility device is changed. For this reason, the time zone of the power consumption peak of each facility device 11 estimated from the scheduled operation time can be shifted, and the maximum power consumption can be suppressed without stopping the facility device. Therefore, it is possible to reduce the probability of exceeding the target power, to reduce the number of stoppages of the equipment when suppressing the maximum power consumption, and to make a plan that can realize the peak cut in advance.

  In the power control system of the present invention, the demand controller further includes a desired information receiving unit that receives change request information that is transmitted from at least one of a plurality of sets and indicates a change request of the scheduled time information, The scheduled time changing unit preferably changes at least one of the scheduled time information of each facility device in accordance with the change request information received by the desired information receiving unit.

  According to this power control system, change request information from at least one set among a plurality of sets is received, and at least one of the scheduled time information of each facility device is changed according to the change request information. For this reason, it is possible to shift the time zone of the power consumption peak in consideration of the change request from the set, and it is possible to suppress environmental deterioration due to the change of the scheduled time information.

  Further, in the power control system of the present invention, the total power consumption prediction unit has a predetermined time limit prediction unit that predicts the total power consumption of the aggregate within the predetermined demand time period, and the device scheduled time change unit is within the predetermined time period. When the total power consumption of the aggregate within the predetermined demand time period predicted by the prediction unit exceeds the target power of the aggregate, it is preferable to change at least one of the scheduled time information of each facility device.

  According to this power control system, the total power consumption of the aggregate within a predetermined time period is predicted, and when the total power consumption exceeds the target power of the aggregate, at least one of the scheduled time information of each equipment device Change one. For this reason, the total power consumption within the demand time period directly connected to the contract fee is predicted, and each scheduled time information is changed, so that the contract fee can be appropriately reduced.

  The demand controller of the present invention is a demand controller that controls the total power consumption of an assembly composed of a plurality of sets having equipment, and is a scheduled time indicating the schedule of operation of each equipment sent from each set The information is predicted by a receiving unit that receives information, a total power consumption predicting unit that predicts the total power consumption of the aggregate, and a total power consumption predicting unit based on scheduled time information from each set received by the receiving unit. When the total power consumption exceeds the target power of the aggregate, change the planned equipment time to prevent the total power consumption from exceeding the target power by changing at least one of the scheduled time information of each equipment device And a scheduled time transmitting unit that transmits the scheduled time information changed by the device scheduled time changing unit to each set.

  According to the demand controller, the total power consumption in the aggregate is predicted based on the scheduled time information indicating the schedule of the operation of each facility device included in the aggregate. For this reason, it is not necessary to perform power calculation processing in real time by measuring the power consumption of each facility device, and future power consumption can be predicted from the scheduled time information. Further, when the predicted total power consumption exceeds the target power, at least one of the scheduled time information of each facility device is changed. For this reason, the time zone of the power consumption peak of each facility device 11 estimated from the scheduled operation time can be shifted, and the maximum power consumption can be suppressed without stopping the facility device. Therefore, it is possible to reduce the probability of exceeding the target power, to reduce the number of stoppages of the equipment when suppressing the maximum power consumption, and to make a plan that can realize the peak cut in advance.

  Further, in the demand controller of the present invention, the demand controller further includes a request information receiving unit that receives change request information that is transmitted from at least one of the plurality of sets and indicates a change request of the scheduled time information, and the device scheduled time change unit includes: It is preferable to change at least one of the scheduled time information of each facility device according to the change request information received by the request information receiving unit.

  According to this demand controller, the change request information from at least one set among the plurality of sets is received, and at least one of the scheduled time information of each equipment is changed according to the change request information. For this reason, it is possible to shift the time zone of the power consumption peak in consideration of the change request from the set, and it is possible to suppress environmental deterioration due to the change of the scheduled time information.

  In the demand controller of the present invention, the total power consumption prediction unit includes a predetermined time limit prediction unit that predicts the total power consumption of the aggregate within a predetermined demand time period, and the device scheduled time change unit includes a predetermined time limit prediction. When the total power consumption of the aggregate within the predetermined demand time period predicted by the unit exceeds the target power of the aggregate, it is preferable to change at least one of the scheduled time information of each facility device.

  According to the demand controller, the total power consumption of the aggregate within a predetermined time period is predicted, and when the total power consumption exceeds the target power of the aggregate, at least one of the scheduled time information of each facility device To change. For this reason, the total power consumption within the demand time period directly connected to the contract fee is predicted, and each scheduled time information is changed, so that the contract fee can be appropriately reduced.

  The demand program of the present invention is a demand program for causing a demand controller that controls the total power consumption of an aggregate including a plurality of sets having equipment to execute each of the equipment sent from each set. A receiving step for receiving scheduled time information indicating an operation schedule, a total power consumption predicting step for predicting the total power consumption of the aggregate based on the scheduled time information received from each set received by the receiving unit, and a total consumption When the total power consumption predicted in the power prediction step exceeds the target power of the aggregate, the total power consumption exceeds the target power by changing at least one of the scheduled time information of each equipment device Device scheduled time changing step for preventing the device and the scheduled time for transmitting the scheduled time information changed in the device scheduled time changing step to each set Characterized in that to execute signal and step.

  According to the demand program of the present invention, the total power consumption in the aggregate is predicted based on the scheduled time information indicating the schedule of the operation of each facility device included in the aggregate. For this reason, it is not necessary to perform power calculation processing in real time by measuring the power consumption of each facility device, and future power consumption can be predicted from the scheduled time information. Further, when the predicted total power consumption exceeds the target power, at least one of the scheduled time information of each facility device is changed. For this reason, the time zone of the power consumption peak of each facility device 11 estimated from the scheduled operation time can be shifted, and the maximum power consumption can be suppressed without stopping the facility device. Therefore, it is possible to reduce the probability of exceeding the target power, to reduce the number of stoppages of the equipment when suppressing the maximum power consumption, and to make a plan that can realize the peak cut in advance.

  Further, the power control method of the present invention is a power control method for controlling the total power consumption of an assembly composed of a plurality of sets having equipment, and shows a schedule of operations of each equipment sent from each set. A reception step for receiving scheduled time information, a total power consumption prediction step for predicting the total power consumption of the aggregate based on the scheduled time information from each set received by the receiving unit, and a prediction in the total power consumption prediction step If the total power consumption exceeds the target power of the aggregate, change the at least one of the scheduled time information of each equipment to prevent the total power consumption from exceeding the target power And a scheduled time transmitting step of transmitting the scheduled time information changed in the device scheduled time changing step to each set.

  According to the power control method of the present invention, the total power consumption in the aggregate is predicted based on the scheduled time information indicating the schedule of the operation of each facility device included in the aggregate. For this reason, it is not necessary to perform power calculation processing in real time by measuring the power consumption of each facility device, and future power consumption can be predicted from the scheduled time information. Further, when the predicted total power consumption exceeds the target power, at least one of the scheduled time information of each facility device is changed. For this reason, the time zone of the power consumption peak of each facility device 11 estimated from the scheduled operation time can be shifted, and the maximum power consumption can be suppressed without stopping the facility device. Therefore, it is possible to reduce the probability of exceeding the target power, to reduce the number of stoppages of the equipment when suppressing the maximum power consumption, and to make a plan that can realize the peak cut in advance.

  In the above, for example, a set is a school or the like that does not exist on the same site, and a set is the same corporation or the same organization that manages the school or the like. Further, the present invention is not limited to this, and the set may be a district (a factory facility or a building having a head office function), and the collective may be a corporation that manages these districts. Further, the assembly may be a small factory or the like existing on the same site, and the assembly may be a factory including these small factories. Further, the set may be each room or floor such as a building, and the set may be a building. In the above, power consumption is a concept including power consumption.

  According to the present invention, in order to suppress the maximum power consumption, the number of times equipment equipment is stopped can be reduced, and real-time calculation processing can be made unnecessary.

  Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a schematic configuration diagram of a power control system according to the present embodiment. As shown in FIG. 1, the power control system 1 includes an assembly 100 including a plurality of facilities 10, a controller 20, and a meteorological agency 30. Here, the facility 10 is, for example, a school, an office, or a public facility (for example, a public hall or a library). The collective body 100 is the same corporation or the same organization that manages schools, offices, public facilities, and the like.

  The facility 10 such as a school does not exist on the same site, and there is currently no demand contract for a unit of 100 aggregates composed of such facilities 10, but it may be expected to exist in the future. Yes (new demand contract) In the following embodiment, a power control system 1 that controls the total power consumption of the aggregate 100 composed of facilities 10 that do not exist in the same site will be described.

  Each of the plurality of facilities 10 has the same configuration. Each facility 10 includes an equipment device 11, a scheduled time storage unit 12, a power data storage unit 13, a communication unit 14, and a control unit 15. The equipment 11 is equipment that consumes electric power and operates, for example, a refrigerator or an air conditioner. In addition, the equipment 11 is not limited to a refrigerator or an air conditioner, and may be any other equipment that operates by consuming electric power, such as lighting equipment.

  The scheduled time storage unit 12 stores scheduled time information (scheduled time for starting operation in the present embodiment) indicating the scheduled operation of the equipment 11. For example, when the equipment 11 is an air conditioner, the scheduled time storage unit 12 operates at a set temperature of 20 ° C. at 5 am, changes the set temperature to 25 ° C. at 7 am, and sets the set temperature to 23 ° C. at 9 am Scheduled time information such as changing is stored. The scheduled time storage unit 12 stores a plurality of scheduled time information. Each of the plurality of scheduled time information has a name such as type A, type B, or type C.

  The power data storage unit 13 stores power consumption information used by the equipment 11 every predetermined time (for example, 1 minute). The communication unit 14 transmits / receives information to / from the controller 20.

  The control unit 15 operates the equipment 11 based on the scheduled time information stored in the scheduled time storage unit 12. For example, the facility 10 side can select any one of a plurality of scheduled time information. For this reason, the control part 15 will operate the equipment 11 based on the selected scheduled time information among the several scheduled time information memorize | stored by the scheduled time memory | storage part 12. FIG.

  Further, the control unit 15 is configured to store information on the power consumption of the equipment 11 in the power data storage unit 13. Further, the control unit 15 is configured to communicate with the controller 20 at the end of the day. At this time, the control unit 15 transmits to the controller 20 information on a power consumption pattern indicating a transition of power consumption consumed by the operation of the facility equipment 11 for one day. The power consumption is stored in the power data storage unit 13, and the control unit 15 reads the power consumption information stored in the power data storage unit 13 and transmits it to the controller 20 as a power consumption pattern. Further, the control unit 15 transmits the selected scheduled time information to the controller 20 together with the power consumption pattern.

  FIG. 2 is a schematic diagram illustrating an example of information transmitted to the controller 20 by each set 10 illustrated in FIG. In the figure, the power consumption pattern is represented by a graph with time on the horizontal axis and power on the vertical axis for easy understanding at a glance. The information is made up of numerical values associated with each other. For example, as illustrated in FIG. 2, the control unit 15 transmits information indicating that the selected scheduled time information is type A, and transmits information on the daily power consumption pattern.

  Reference is again made to FIG. The controller 20 controls the total power consumption of the assembly 100 and includes a communication unit 21, a control unit 22, and a power database 23. The communication unit 21 transmits / receives information to / from each facility 10 and the Japan Meteorological Agency 30, and receives the scheduled time information and power consumption pattern information of the equipment 11 from each facility 10 at the end of the day. It has become.

  The controller 22 controls the entire controller 20. The database 23 stores scheduled time information and power consumption pattern information received via the communication unit 21 at the end of the day. FIG. 3 is a schematic diagram showing an example of the stored contents of the power database 23 shown in FIG. As shown in FIG. 3, the power database 23 also stores information on the destination facility 10 when storing the scheduled time information and the power consumption pattern information received by the communication unit 21.

  Furthermore, the power database 23 stores the temperature information on the day when the facility device 11 is operated, together with the scheduled time information and the power consumption pattern information. The temperature information is input from the meteorological agency 30 by the communication unit 21 and stored in the power database 23 by the control unit 22. Note that when there are a plurality of pieces of power consumption pattern information of the same facility 10, the same scheduled time information, and the same temperature, the control unit 22 calculates the average of the information of the plurality of power consumption patterns and stores it in the power database 23. .

  The Japan Meteorological Agency 30 has temperature information such as one day, morning and afternoon. In addition, as long as it has temperature information such as one day, morning, and afternoon, it is not limited to the Japan Meteorological Agency 30 and may be other things such as an Internet site.

  Here, the power control system 1 according to the present embodiment is configured to change at least one of the scheduled time information selected in each facility 10 when the target power is exceeded, and exceeds the target power. To prevent. Details will be described below. As shown in FIG. 1, the control unit 22 on the controller 20 side includes a total power consumption prediction unit 22a and a device scheduled time determination unit (change unit) 22b. As will be described later, the total power consumption prediction unit 22a has a function of predicting the power consumption pattern of each facility 10 and the total power consumption of the assembly 100, and the estimated total power consumption is a target of the device scheduled time determination unit 22b. It has a function of changing scheduled time information when the power is exceeded. The control unit 15 on the facility 10 side is configured to transmit the selected scheduled time information to the controller 20 at the start of the day such as 5:00 am.

  The control unit 22 that has received the scheduled time information from each facility 10 at the start of the day executes the following processing. That is, the total power consumption prediction unit 22 a reads predicted temperature information such as one day, morning, and afternoon from the Japan Meteorological Agency 30. Then, the total power consumption prediction unit 22a predicts the future power consumption pattern of each facility 10 based on the scheduled time information received from each facility 10 and the predicted temperature information. Furthermore, the total power consumption prediction unit 22a predicts the total power consumption in the aggregate 100 from the power consumption pattern of each facility 10.

  Thereafter, the device scheduled time determination unit 22b determines whether the total power consumption predicted by the total power consumption prediction unit 22a exceeds the target power of the aggregate 100. When the predicted total power consumption exceeds the target power of the aggregate 100, the device scheduled time determination unit 22b changes at least one of the scheduled time information of the equipment 11 that each facility 10 has. Thereby, the peak time zone of the power consumption consumed in each facility 10 can be shifted, and the power consumption can be reduced to prevent the target power from being exceeded.

  Here, at least one of the control units 15 on the facility 10 side transmits change request information indicating the change request of the scheduled time of the equipment 11 in addition to transmitting the scheduled time information at the start of the day. It is desirable. Thereby, the communication unit 21 receives the change request information transmitted from at least one of the facilities 10, and the device scheduled time determination unit 22b changes at least one of the scheduled time information according to the change request information. Become. As a result, the scheduled time can be changed in consideration of the desire on the facility 10 side.

  Hereinafter, the change of the scheduled time will be described in detail with reference to FIGS. In the description of FIGS. 4 to 7, there are three facilities 10, and lighting facilities and air conditioners are provided in each facility 10, and a case where scheduled time information of the air conditioners is changed will be described as an example. .

  FIG. 4 is a diagram showing the state of power when the scheduled time is not changed, and (a) shows the power consumption of each facility 10 and the total power consumption of the assembly 100 for each demand period. As shown in FIG. 4A, it is assumed that each facility 10 transmits scheduled time information that the air conditioner is activated at 7:30 am to the controller 20. In this case, the control unit 22 reads the corresponding power consumption pattern information from the power database 23 based on the received scheduled time information and the predicted temperature information from the Japan Meteorological Agency 30. Then, the total power consumption prediction unit 22a calculates a total power consumption pattern in the entire assembly 100 as shown in FIG.

  FIG. 4B is a breakdown of power consumption in the demand period from 7:30 am to 8 am for each facility 10, and FIG. 4C is the demand time period for each facility 10 from 7:30 am to 8 am Is a breakdown of power consumption. As shown in FIGS. 4B and 4C, the power consumption of the lighting device is the same in both demand periods. However, the power consumption of the air conditioner is greatest from 7:30 to 7:40 immediately after startup, and then gradually decreases with the passage of time.

  FIG. 5 is a diagram showing the desired change information of each facility 10. As shown to Fig.5 (a), the 1st facility 10 makes the 1st hope that the starting start time of an air conditioner will be changed to 7:20 am, and the 2nd hope is starting start time 7:00 am 10 minutes. Also, the third desire is the start time of 7:00 am, the fourth desire is the start time of 6:50 am, and the fifth desire is the start time of 6:40 am.

  The second facility 10 has a first desire to change the start-up time of the air conditioner to 7:40 am, and the second desire is that the start-up time is 7:50 am. Also, the third desire is the start time of 8:00 am, the fourth desire is the start time of 8:10 am, and the fifth desire is the start time of 8:20 am.

  The third facility 10 has a first desire to change the start-up time of the air conditioner to 7:20 am, and the second desire is that the start-up time is 7:10 am. Also, the third desire is the start time of 7:00 am, the fourth desire is the start time of 7:40 am, and the fifth desire is the start time of 7:50 am.

  FIG. 5B shows information on the priority of change when changing the operation start time of the air conditioner when the desired change information is not sent from the facility 10. When the change request information has not been transmitted, the device scheduled time determination unit 22b changes at least one of the scheduled times for the operation of the air conditioner based on the information shown in FIG.

  Further, the desired change information shown in FIG. 5A does not have to clearly indicate the start time of the air conditioner as described above, and may be as follows, for example. That is, when the facility 10 is a school, the desired change information is information indicating, for example, “Because there is a class from the temporary limit, it is prohibited to shift the activation start time backward, and if it is shifted forward, it is permissible” (First facility). In addition, the desired change information may be information indicating, for example, “It is permissible to shift the activation start time backward because there is no class at the temporary meeting for the temporary period,” (second facility). Furthermore, the desired change information is, “If it is before 7:00 am, it is permissible to shift the start time forward, but it is not permissible to shift before that because of the electricity bill. Start instead of shifting before 7:00 am The information may indicate that the time can be shifted later (third facility).

  FIG. 6 shows how the scheduled time is determined by the device scheduled time determination unit 22b shown in FIG. As shown in FIG. 6 (a), first, the intra-predetermined time prediction unit 22a1 of the total power consumption prediction unit 22a is 7 am to 7:30 am, 7:30 am to 8 am, 8 am to 8:30 am, The total power consumption of the aggregate 100 in each demand period from 8:30 am to 9 am and 9 am to 9:30 am is predicted.

  Specifically, the total power consumption from 7:00 am to 7.30 am is 30 kW, and the total power consumption from 7.30 am to 8:00 am is 300 kW. The total power consumption from 8 am to 8:30 am, the total power consumption from 8:30 am to 9 am, and the total power consumption from 9 am to 9:30 am is 120 kW. It is assumed that the target power is 180 kW.

  As described above, the total power consumption from 7.30 am to 8:00 is 300 KW, which exceeds the target power. Thus, since the total power consumption of the aggregate 100 in one demand time limit exceeds the target power, the device scheduled time determination unit 22b changes at least one of the scheduled time information of each air conditioner.

  First, the equipment scheduled time determination unit 22b changes the activation start time of the air conditioner according to the first request of the first facility 10, as shown in FIG. 6 (b). FIG. 7 is a diagram showing details of power consumption when the start time of the air conditioner is changed. As shown to Fig.7 (a), the apparatus scheduled time determination part 22b changes the starting start time of an air conditioner from 7:30 to 7:20. Thereby, as shown in FIG.6 (b), the total power consumption from 7.30 am to 8:00 becomes 270 kW. However, since the total power consumption from 7.30 am to 8:00 exceeds the target power, the device scheduled time determination unit 22b further changes the scheduled time information of the operation of each air conditioner.

  Next, the device scheduled time determination unit 22b changes the activation start time of the air conditioner according to the first request of the second facility 10, as shown in FIG. That is, as shown in FIG.7 (b), the apparatus scheduled time determination part 22b changes the starting start time of an air conditioner from 7:30 to 7:40. Thereby, as shown in FIG.6 (c), the total power consumption from 7.30 am to 8:00 becomes 250 kW. However, since the total power consumption from 7.30 am to 8:00 exceeds the target power, the device scheduled time determination unit 22b further changes the scheduled time information of the operation of each air conditioner.

  Thereafter, the device scheduled time determination unit 22b changes the start time of the air conditioner according to the first request of the third facility 10, as shown in FIG. 6 (d). That is, as shown to Fig.7 (a), the apparatus scheduled time determination part 22b changes the starting start time of an air conditioning machine from 7:30 to 7:20. Thereby, as shown in FIG.6 (d), the total power consumption from 7.30 am to 8:00 becomes 220 kW. However, since the total power consumption from 7.30 am to 8:00 exceeds the target power, the device scheduled time determination unit 22b further changes the scheduled time information of the operation of each air conditioner.

  Next, the device scheduled time determination unit 22b changes the activation start time of the air conditioner according to the second desire of the first facility 10, as shown in FIG. 6 (e). That is, as shown in FIG.7 (c), the apparatus scheduled time determination part 22b changes the starting start time of an air conditioner from 7:20 to 7:10. Thereby, as shown in FIG.6 (e), the total power consumption from 7.30 am to 8:00 becomes 200 kW. However, since the total power consumption from 7.30 am to 8:00 exceeds the target power, the device scheduled time determination unit 22b further changes the scheduled time information of the operation of each air conditioner.

  Thereafter, the device scheduled time determination unit 22b changes the start time of the air conditioner according to the second request of the second facility 10 as shown in FIG. 6 (f). That is, as shown in FIG. 7D, the device scheduled time determination unit 22b changes the activation start time of the air conditioner from 7:40 to 7:50. As a result, as shown in FIG. 6F, the total power consumption from 7.30 am to 8:00 am is 170 kW and does not exceed the target power. Moreover, the total power consumption in other demand time periods does not exceed the target power. For this reason, the apparatus scheduled time determination part 22b determines to operate the air conditioner of each facility 10 with the current scheduled time information.

  Next, the power control method according to the present embodiment will be described with reference to FIGS. FIG. 8 is a flowchart showing an example of the power control method according to the present embodiment, and shows the operation on the facility 10 side.

  As shown in FIG. 8, first, the control unit 15 stores information on the current power consumption in the power data storage unit 13 (step S <b> 1). Here, when the equipment 11 is an air conditioner or the like that operates frequently in the morning, the control unit 15 may store the power consumption information only in the morning in the power data storage unit 13. Next, the control unit 15 determines whether it is time to determine the scheduled time information of today's equipment 11 (step S2). For example, the control unit 15 determines whether it is 5 o'clock in the morning.

When it is determined that it is not the timing for determining the scheduled time information of today's equipment 11 (step S2: NO), the control unit 15 determines whether it is the timing for transmitting the power consumption pattern of the equipment 11 of today. (Step S3). If it is determined that it is not time to transmit the power consumption pattern (step S3: NO), the process is step S1.
Migrate to

  On the other hand, if it is determined that it is time to transmit the power consumption pattern (step S3: YES), the control unit 15 transmits information on the power consumption pattern via the communication unit 14 (step S4), as shown in FIG. The process ends.

  When it is determined that it is time to determine the scheduled time information of today's equipment 11 (step S2: YES), the control unit 15 transmits the currently selected scheduled time information via the communication unit 14. (Step S5). Thereafter, the control unit 15 determines whether or not to send change request information (step S6). When it is determined that the change request information is not transmitted (step S6: NO), the process proceeds to step S8.

  On the other hand, when it is determined that the change request information is to be transmitted (step S6: YES), the control unit 15 transmits the change request information as illustrated in FIG. 5 via the communication unit 14 (step S7). Thereafter, the process proceeds to step S8.

  In step S8, the control unit 15 determines whether or not the scheduled time information determined by the controller 20 has been received (step S8). If it is determined that the scheduled time information has not been received (step S8: NO), this process is repeated until it is determined that it has been received. On the other hand, when it is determined that the scheduled time information has been received (step S8: YES), the control unit 15 operates the equipment 11 according to the received scheduled time information (step S9). Thereafter, the process shown in FIG. 8 ends. The process shown in FIG. 8 is repeatedly executed until the apparatus power supply on the facility 10 side is turned off.

  FIG. 9 is a flowchart showing an example of the power control method according to the present embodiment, and shows the operation on the controller 20 side. This power control method is executed by the controller 20 based on a demand program stored in the control unit 22. As illustrated in FIG. 9, the control unit 22 of the controller 20 determines whether or not information on the current power consumption pattern has been received from the facility 10 side (step S <b> 11).

  When it is determined that the information on the current power consumption pattern has been received (step S11: YES), the control unit 22 determines whether the power database 23 stores information on the power consumption pattern under the same conditions (step S11). S12). That is, the control unit 22 determines whether or not information on the power consumption pattern when the equipment 11 is operated is stored in the power database 23 based on the same facility 10, the same temperature condition, and the same scheduled time information. .

  When it is determined that the power consumption pattern information of the same condition is stored in the power database 23 (step S12: YES), the control unit 22 averages the power consumption pattern received this time and the power consumption pattern for the past. Is stored in the power database 23 (step S13). Thereafter, the process proceeds to step S11. On the other hand, when determining that the power consumption pattern information of the same condition is not stored in the power database 23 (step S12: NO), the control unit 22 stores the power consumption pattern information received this time in the power database 23. (Step S14). Thereafter, the process proceeds to step S11.

  If it is determined that the information on the power consumption pattern for today is not received (step S11: NO), the control unit 22 determines whether or not the scheduled time information for today is received from each facility 10 ( Step S15). If it is determined that today's scheduled time information has not been received (step S15: NO), the process proceeds to step S11.

  If it is determined that today's scheduled time information has been received (step S15: YES), the intra-predetermined time prediction unit 22a1 of the control unit 22 predicts the total power consumption of each demand time period (step S16). Thereafter, the device scheduled time determination unit 22b determines whether any of the total power consumption in each demand time limit exceeds the target power (step S17).

  If it is determined that none of the total power consumption in each demand time limit exceeds the target power (step S17: NO), the device scheduled time determination unit 22b determines to operate with the current scheduled time information (step S18). Thereafter, the process proceeds to step S20. On the other hand, when it is determined that any of the total power consumption in each demand time limit exceeds the target power (step S17: YES), the device scheduled time determination unit 22b executes a process for changing the scheduled time information of each facility 10. (Step S19). Then, the process proceeds to step S20.

  In step S <b> 20, the control unit 22 transmits the scheduled time information determined in step S <b> 18 or step S <b> 19 to each facility 10. Thereafter, the process shown in FIG. 9 ends. The process shown in FIG. 9 is repeatedly executed until the apparatus power supply on the controller 20 side is turned off.

  FIG. 10 is a flowchart showing details of the scheduled time information changing process (step S19) shown in FIG. As shown in FIG. 10, first, the device scheduled time determination unit 22b initializes the facility variable A and the desired variable N to “1” (step S21). Thereafter, the device scheduled time determination unit 22b changes the scheduled time according to the Nth desire of the A facility 10 (step S22). Next, the predetermined time limit prediction unit 22a1 predicts the total power consumption of each demand time limit (step S23). Thereafter, the device scheduled time determination unit 22b determines whether any of the total power consumption of each demand time limit exceeds the target power (step S24).

If it is determined that none of the total power consumption in each demand time limit exceeds the target power (step S24: NO), the process proceeds to step S38. On the other hand, when it is determined that any of the total power consumption in each demand time limit exceeds the target power (step S24: YES), the device scheduled time determination unit 22b determines whether or not the facility variable A is the maximum value A _MAX . Is determined (step S25). Here, the maximum value A _MAX is the same as the number of facilities 10. That is, when the number of facilities is 3, the maximum value A _MAX is “3”.

When it is determined that the facility variable A is not the maximum value A _MAX (step S25: NO), the device scheduled time determination unit 22b increments the facility variable A (step S26). Thereafter, the process proceeds to step S22. On the other hand, when it is determined that the facility variable A is the maximum value A _MAX (step S25: YES), the device scheduled time determination unit 22b determines whether the desired variable N is the maximum value N _MAX (step S27). ). Here, when the change request information includes the first to fifth requests, the maximum value N _MAX is “5”.

When it is determined that the desired variable N is not the maximum value N _MAX (step S27: NO), the device scheduled time determination unit 22b initializes the facility variable A to “1” (step S28). Thereafter, the device scheduled time determination unit 22b increments the facility variable N (step S29), and the process proceeds to step S22.

In addition, when it is determined that the desired variable N is the maximum value N _MAX (step S27: YES), the device scheduled time determination unit 22b has the start start time of the facility device 11 among the change request information of each facility 10. A facility 10 having an early hope is identified (step S30). Next, the equipment scheduled time determination unit 22b substitutes the number of the facility 10 identified in step S30 for the facility variable A (step S31). That is, when the first facility 10 is specified, the device scheduled time determination unit 22b substitutes “1” for the facility variable A, and substitutes “2” for the facility variable A when the second facility 10 is specified. Will be. The same applies when another facility 10 is specified.

  Thereafter, the device scheduled time determination unit 22b changes the earliest activation start time of the A facility 10 to 10 minutes before (step S32). Next, the predetermined time limit prediction unit 22a1 predicts the total power consumption of each demand time limit (step S33). Thereafter, the device scheduled time determination unit 22b determines whether any of the total power consumption of each demand time limit exceeds the target power (step S34).

When it is determined that none of the total power consumption in each demand time limit exceeds the target power (step S34: NO), the process proceeds to step S38. On the other hand, when it is determined that any of the total power consumption in each demand time limit exceeds the target power (step S34: YES), the device scheduled time determination unit 22b determines whether the facility variable A is the maximum value A _MAX or not. Is determined (step S35).

When it is determined that the facility variable A is not the maximum value A _MAX (step S35: NO), the device scheduled time determination unit 22b increments the facility variable A (step S36). Thereafter, the process proceeds to step S32. On the other hand, when it is determined that the facility variable A is the maximum value A _MAX (step S35: NO), the device scheduled time determination unit 22b initializes the facility variable A to “1” (step S37). Thereafter, the process proceeds to step S32.

  Moreover, in step S38, the apparatus scheduled time determination part 22b determines to drive | operate with the scheduled time information after a change (step S38). Thereafter, the process proceeds to step S20 in FIG.

  Thus, according to the present embodiment, the total power consumption in the aggregate 100 is predicted based on the scheduled time information indicating the schedule of the operation of each facility device 11 included in the aggregate 100. For this reason, it is not necessary to perform power calculation processing in real time by measuring the power consumption of each equipment device 11, and the future power consumption can be predicted from each scheduled time information. Further, when the predicted total power consumption exceeds the target power, at least one of the scheduled time information of the operation of each facility device 11 is changed. For this reason, the time zone of the power consumption peak of each facility device 11 estimated from the scheduled operation time can be shifted, and the maximum power consumption can be suppressed without stopping the facility device 11. Therefore, it is possible to reduce the probability of exceeding the target power, to reduce the number of times the facility equipment 11 is stopped in order to suppress the maximum power consumption, and to make a plan that can realize the peak cut in advance.

  Further, the controller 20 receives change request information from at least one facility 10 among the plurality of facilities 10, and according to the change request information, at least one of the scheduled time information of the operation of each equipment device 11 is obtained. change. For this reason, in consideration of the change request from the facility 10, the time zone of the power consumption peak can be shifted, and the environmental deterioration due to the change of the scheduled time information can be suppressed.

  Moreover, when the total power consumption of the aggregate 100 within a predetermined time period is predicted and the total power consumption exceeds the target power of the aggregate 100, at least one of the scheduled time information of the operation of each facility device 11 is assumed. Change one. Therefore, the scheduled time information is changed by predicting the total power consumption within the demand time period directly connected to the contract fee, and the contract fee can be appropriately reduced.

  Further, since the controller 20 obtains the temperature information from the Japan Meteorological Agency 30, the temperature information can be obtained free of charge.

  Also, when the facility 10 is a school or the like that does not exist on the same site, and the assembly 100 is the same corporation or the same organization that manages the school or the like, the power control system 1 corresponding to the new demand contract should be provided. It becomes. Thereby, it is possible to perform new demand control that is assumed to be collectively contracted for a plurality of facilities 10 that do not exist in the same site.

  As described above, the present invention has been described based on the embodiment, but the present invention is not limited to the above embodiment, and may be modified without departing from the gist of the present invention. For example, in the above embodiment, the facility 10 is a school or the like that does not exist on the same site, and the assembly 100 is the same corporation or the same organization that manages the school or the like. The assembly 100 may be a factory including these small factories. The facility 10 may be a room such as a building, and the assembly 100 may be a building. In the regulation embodiment, real-time processing is not required for demand control, but it may be used in combination with conventional real-time demand control. Furthermore, the various configurations of the present embodiment may be realized by a processor or the like using hardware or a program.

  Moreover, in the said embodiment, although the air conditioner was mentioned as an example of the equipment device 11, it may be other apparatuses, such as not only an air conditioner but a refrigerator. In the above embodiment, the scheduled time information is changed for one type of equipment 11, but the present invention is not limited to this, and the scheduled time information may be changed for various types of equipment 11.

  Furthermore, in the above embodiment, as shown in FIG. 10, even if the scheduled time information is changed based on the desired change information from the facility 10, if the total power consumption within the demand time limit exceeds the target power, the demand time limit Until the total power consumption in the facility becomes equal to or less than the target power, a process of shifting the scheduled time of each facility 10 forward by 10 minutes is executed. However, it is not limited to 10 minutes, and it may be shifted forward by several minutes or shifted forward by several tens of minutes. Furthermore, the case where the total power consumption within each demand period is the smallest as a result of changing the scheduled time information based on the desired change information without shifting the scheduled time of each facility 10 forward by 10 minutes. May be adopted.

It is a schematic block diagram of the electric power control system which concerns on this embodiment. It is a schematic diagram which shows an example of the information transmitted to the controller 20 by each set 10 shown in FIG. It is a schematic diagram which shows an example of the memory content of the electric power database 23 shown in FIG. It is a figure which shows the mode of the electric power when a scheduled time is not changed, (a) shows the power consumption of each facility 10 for every demand period and the total power consumption of the assembly 100, (b) shows the power consumption of each facility 10 The breakdown of power consumption in the demand period from 7.30 am to 8 am is shown, and (c) shows the breakdown of power consumption in the demand period from 7.30 am to 8 am of each facility 10. It is a figure which shows the desired change information of each facility 10, (a) shows an example of the desired change information transmitted from a facility, (b) has shown the initial value of the desired change information. It is a figure which shows the mode of the scheduled time determination by the apparatus scheduled time determination part 22b shown in FIG. 1, (a) shows an example of the total power consumption before scheduled time change, (b) is the 1st facility 1st facility. An example of the total power consumption after changing the scheduled time based on the hope is shown, (c) shows an example of the total power consumption after changing the scheduled time based on the first hope of the second facility, (d ) Shows an example of the total power consumption after changing the scheduled time based on the first desire of the third facility, and (e) shows the total consumption after changing the scheduled time based on the second preference of the first facility. An example of the power is shown, and (f) shows an example of the total power consumption after changing the scheduled time based on the second desire of the second facility. It is a figure which shows the detail of the power consumption when the starting start time of an air conditioner is changed, (a) is after changing the scheduled time based on the first hope of the first facility and the first hope of the third facility Shows the breakdown of power consumption, (b) shows the breakdown of power consumption after changing the scheduled time based on the first hope of the second facility, (c) shows the schedule based on the second hope of the first facility The breakdown of the power consumption after changing the time is shown, and (d) shows the breakdown of the power consumption after changing the scheduled time based on the second desire of the second facility. It is a flowchart which shows an example of the electric power control method which concerns on this embodiment, and has shown operation | movement by the facility 10 side. It is a flowchart which shows an example of the electric power control method which concerns on this embodiment, and has shown operation | movement by the controller 20 side. It is a flowchart which shows the detail of the change process of the scheduled time information shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Electric power control system 10 ... Facility 11 ... Equipment 12 ... Schedule time memory | storage part 13 ... Electric power data memory | storage part 14 ... Communication part 15 ... Control part 20 ... Controller (demand controller)
21 ... Communication unit (receiving unit, scheduled time transmitting unit, scheduled time receiving unit)
22 ... Control unit 22a ... Total power consumption prediction unit 22a1 ... Predetermined time limit prediction unit 22b ... Device scheduled time determination unit (device scheduled time change unit)
30 ... Japan Meteorological Agency 100 ... Aggregate

Claims (9)

A power control system that prevents the total power consumption from exceeding the target power of the aggregate by predicting the total power consumption of the aggregate consisting of a plurality of sets each having equipment.
Predicting the total power consumption in the aggregate based on the scheduled time information indicating the schedule of operation of each facility device,
When the predicted total power consumption exceeds the target power, at least one of the scheduled time information of each facility device is changed. A power control system comprising a set of a plurality of sets having equipment and a demand controller for controlling the total power consumption of the set,
The demand controller is
A receiving unit for receiving scheduled time information indicating a schedule of operation of each facility device transmitted from each set;
A total power consumption prediction unit that predicts the total power consumption of the aggregate based on the scheduled time information from each set received by the reception unit;
When the total power consumption predicted by the total power consumption prediction unit exceeds the target power of the aggregate, at least one of the scheduled time information of each facility device is changed so that the total power consumption is the target power. An equipment scheduled time change unit that prevents the power from being exceeded,
A scheduled time transmitting unit for transmitting the scheduled time information changed by the device scheduled time changing unit to each set;
A power control system comprising: The demand controller further includes a request information receiving unit that receives change request information that is transmitted from at least one of a plurality of sets and indicates a change request of the scheduled time information,
The said apparatus scheduled time change part changes at least 1 of the scheduled time information of each installation apparatus according to the change desired information received by the said desired information receiving part. Power control system. The total power consumption prediction unit has a prediction unit within a predetermined time period for predicting the total power consumption of the aggregate within a predetermined demand time period,
The device scheduled time changing unit is configured to determine a scheduled time for each facility device when a total power consumption of the aggregate within a predetermined demand time period predicted by the predetermined time period predicting unit exceeds a target power of the aggregate. The power control system according to claim 2, wherein at least one of the information is changed. A demand controller for controlling the total power consumption of an assembly composed of a plurality of sets each having equipment.
A receiving unit for receiving scheduled time information indicating a schedule of operation of each facility device transmitted from each set;
A total power consumption prediction unit that predicts the total power consumption of the aggregate based on the scheduled time information from each set received by the reception unit;
When the total power consumption predicted by the total power consumption prediction unit exceeds the target power of the aggregate, at least one of the scheduled time information of each facility device is changed so that the total power consumption is the target power. An equipment scheduled time change unit that prevents the power from being exceeded,
A scheduled time transmitting unit for transmitting the scheduled time information changed by the device scheduled time changing unit to each set;
A demand controller comprising: A request information receiving unit for receiving change request information transmitted from at least one set of the plurality of sets and indicating a change request of the scheduled time information;
The said apparatus scheduled time change part changes at least 1 of the scheduled time information of each installation apparatus according to the change desired information received by the said desired information receiving part. Demand controller. The total power consumption prediction unit has a prediction unit within a predetermined time period for predicting the total power consumption of the aggregate within a predetermined demand time period,
The device scheduled time changing unit is configured to determine a scheduled time for each facility device when a total power consumption of the aggregate within a predetermined demand time period predicted by the predetermined time period predicting unit exceeds a target power of the aggregate. The demand controller according to claim 5, wherein at least one of the information is changed. A demand program for causing a demand controller to control the total power consumption of an aggregate consisting of a plurality of sets having equipment,
A receiving step for receiving scheduled time information indicating a schedule of operation of each facility device transmitted from each set;
A total power consumption prediction step of predicting the total power consumption of the aggregate based on the scheduled time information received from each set received by the receiver;
When the total power consumption predicted in the total power consumption prediction step exceeds the target power of the aggregate, at least one of the scheduled time information of each facility device is changed so that the total power consumption is the target power. A device scheduled time change step for preventing the power from being exceeded,
A scheduled time transmitting step of transmitting the scheduled time information changed in the device scheduled time changing step to each set;
A demand program characterized by causing A power control method for controlling the total power consumption of an assembly composed of a plurality of sets having equipment,
A receiving step for receiving scheduled time information indicating a schedule of operation of each facility device transmitted from each set;
A total power consumption prediction step of predicting the total power consumption of the aggregate based on the scheduled time information received from each set received by the receiver;
When the total power consumption predicted in the total power consumption prediction step exceeds the target power of the aggregate, at least one of the scheduled time information of each facility device is changed so that the total power consumption is the target power. A device scheduled time change step for preventing the power from being exceeded,
A scheduled time transmitting step of transmitting the scheduled time information changed in the device scheduled time changing step to each set;
A power control method comprising:

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