JP5758950B2 - Air conditioner control device, air conditioner control system, air conditioner control method and program - Google Patents

Description

  The present invention relates to an air conditioner control device, an air conditioner control system, an air conditioner control method, and a program for controlling the operation of an air conditioner.

  In building operation management, it is very important from the management aspect to operate equipment within the planned range (target price range). Regarding the operation of air conditioning equipment, it is common practice to set energy reduction targets and budgets, and control the air conditioning equipment so that the amount of power consumption or the amount converted value falls within that range.

  For example, the target reduction rate from the base year is determined in units of one month, and the target power consumption (amount) for the day is set to a value obtained by dividing the target power consumption (amount) for the month by the number of days in the month. Then, the operation of the air conditioner is controlled so as not to exceed the daily target power consumption (money amount).

  Here, a system that controls the operation of the air conditioner so that the power consumption does not exceed the limit value without impairing the comfort of the room has been proposed (for example, Patent Document 1).

  In the remote management system of the air conditioning equipment of Patent Document 1, the management device acquires data indicating the operation status of the air conditioner, and is the comfort satisfied when the power consumption exceeds the target value? The control information that suppresses the amount of power used is transmitted to the air conditioner if it is diagnosed. On the other hand, when the comfort is not satisfied, the excess value of the power consumption is transferred to the target value of the power consumption after that time, and the target value is reduced.

JP 2010-203628 A

  In the remote management system of the air conditioning facility of Patent Document 1, since it is determined whether or not the power consumption can be suppressed only when the actual value exceeds the target value, while the actual value is below the target value, There has been a problem that power consumption is not reduced and efficient energy reduction is not performed. Also, when using target values in units of one month, for example, when days with low heat loads are concentrated in the first half of the month and days with high loads are concentrated in the second half, There was a problem that the state of worsening continued.

  This invention is made | formed in view of the said situation, and it aims at providing the air-conditioner control apparatus etc. which can operate | use the air-conditioner according to a plan, without giving a big difference in comfort. .

In order to achieve the above object, the air conditioner control device of the present invention stores a storage schedule list in which a plurality of operation schedules including information on the target temperature of an air conditioner are ranked in order of higher power consumption. A period target value setting unit for setting a period target value for a certain period related to the power consumption of the air conditioner, and a period of time for operating the air conditioner with the operation schedule selected from the operation schedule list to reach the target temperature . A thermal load estimation unit that calculates an estimated value of the thermal load, an operation schedule selection unit that selects an operation schedule for controlling the air conditioner based on the estimated value of the thermal load, and a control signal in accordance with the operation schedule are generated. And a control signal generator for outputting to the air conditioner. An operation schedule selection part selects a high-order operation schedule in the operation schedule in which the period predicted value which concerns on the power consumption of the fixed period estimated based on the estimated value of a heat load falls below a period target value.

  According to the present invention, it is possible to operate an air conditioner according to a plan without giving a large difference in comfort.

It is a block diagram which shows the structure of the air conditioning machine control system which concerns on Embodiment 1. FIG. It is a figure which shows the content of the driving schedule list which concerns on Embodiment 1. FIG. It is a flowchart which shows the air-conditioner control process which concerns on Embodiment 1. FIG. It is a figure which shows the content of the driving schedule list which concerns on Embodiment 2. FIG. It is a flowchart which shows the air conditioning machine control process which concerns on Embodiment 2. FIG. It is a block diagram which shows the structure of the air conditioning machine control system which concerns on Embodiment 3. FIG. It is the figure which showed the relationship between the heat load of an air conditioner, and power consumption. It is a figure for demonstrating the determination method of the level of a thermal load. It is a figure for demonstrating the determination method of the level of a thermal load.

Embodiment 1 FIG.
As shown in FIG. 1, the air conditioner control system 1 according to Embodiment 1 of the present invention includes a control device 10 and an air conditioner 20 controlled by the control device 10. Here, FIG. 1 shows a configuration in which only one air conditioner 20 is provided, but an arbitrary number of air conditioners 20 are provided, and the control device 10 controls each air conditioner 20. The air conditioner is an air conditioner having a cooling function or a heating function. In the present embodiment, the case of cooling operation in summer will be described.

  The control device 10 includes an arithmetic processing unit 11 and a storage unit 12. The control device 10 may further include an operation unit for an operator to input data, a display unit for outputting and displaying data, a communication unit for transmitting and receiving data, and the like.

  The storage unit 12 includes, for example, a readable / writable nonvolatile semiconductor memory such as a flash memory or a magnetic storage device such as a hard disk drive. The storage unit 12 stores a monthly target value list 121, environmental information 122, an operation schedule list 123, device characteristic data 124, and an electricity bill table 125. The storage unit 12 also stores a program executed by the arithmetic processing unit 11.

  The monthly target value list 121 stores target values related to power consumption for each month. In the present embodiment, this target value is the target amount of electricity bill for each month. The monthly target value list 121 is, for example, a value input in advance from the operation unit of the control device 10 by an administrator, or a value obtained by multiplying a result of the previous year by a certain rate.

  The environment information 122 is information indicating the environment of the space in which the air conditioner 20 operates. For example, data related to a heat source such as a person, lighting, or OA equipment, which is input in advance from the operation unit of the control device 10 by an administrator, Includes building insulation properties, window location, window opening area, etc. Moreover, you may include information, such as the weather forecast data regularly acquired using the communication part of the control apparatus 10, and past weather data.

  The operation schedule list 123 is a list set for each month, and is a list in which a plurality of operation schedules of the air conditioner 20 are ranked according to the power consumption. The driving schedule list 123 is input and stored in advance from the operation unit of the control device 10 by the administrator. The example of FIG. 2 shows a driving schedule list 123 for a specific month in summer, and includes driving schedules from the highest level 0 to the lowest level 10 arranged in descending order of power consumption.

  Each operation schedule includes information on an operation type such as air conditioning, an operation start time, an operation end time, and a reference temperature. FIG. 2 shows a part of the information. Each operation schedule may also contain detailed setting information that realizes energy savings. For example, during summer cooling operation, the setting for making the target temperature higher than normal during lunch breaks or when the heat load is small It is.

  The highest level 0 operation schedule is the basic operation schedule, and is set so that power consumption gradually decreases in the order of levels 1 to 10. For example, the basic operation schedule of level 0 is a cooling operation with a reference temperature of 26 ° C. as a target room temperature. Level 1 is an operation that is raised by 1 ° C. with respect to the reference temperature of the basic operation schedule for 3 minutes out of 30 minutes. Level 2 is an operation that is raised by 1 ° C. for 6 minutes out of 30 minutes. Level 3 is an operation in which operation is stopped for 3 minutes in 30 minutes, and level 4 is an operation in which operation is stopped for 6 minutes in 30 minutes. Level 5 is a cooling operation in which the reference temperature of the basic operation schedule is increased by 1 ° C. and the target room temperature is 27 ° C. Level 6 is an operation in which the temperature is raised by 1 ° C. for 3 minutes out of 30 minutes with respect to the reference temperature of 27 ° C.

  Note that it is desirable that the driving schedule list 123 is configured so that a certain level of comfort can be ensured even when driving at the lowest level driving schedule with the lowest power consumption. In the example of FIG. 2, the reference temperature of the operation schedule at level 10 is set to 28 ° C. during cooling.

  The device characteristic data 124 is data indicating input power necessary for each output capacity of the air conditioner, and includes, for example, a catalog value of the air conditioner. The electricity bill table 125 is based on a contract with an electric power company, and is data indicating an electricity bill with respect to power consumption for each time zone.

  The arithmetic processing unit 11 includes a CPU (Central Processing Unit) and the like, and implements an air conditioner control function and the like by executing various programs stored in the storage unit 12. The arithmetic processing unit 11 includes functional units such as a target value setting unit 111, an operation schedule selection unit 112, a heat load estimation unit 113, and a control signal generation unit 114 in order to realize an air conditioner control function.

  The target value setting unit 111 divides the monthly target value in the monthly target value list 121, which is the target amount of electricity bill for January, by the number of days in the current month, and calculates the target amount of electricity bill for the day. Then, a value obtained by multiplying the calculated target amount by a coefficient according to the thermal load estimated by the thermal load estimation unit 113 is determined as a daily target value, and output to the operation schedule selection unit 112. To do.

  The operation schedule selection unit 112 provisionally selects an operation schedule in order from the basic operation schedule of level 0 in the lower order, reads the contents of the operation schedule temporarily selected, and outputs the contents to the heat load estimation unit 113. Moreover, the operation schedule selection part 112 calculates the power consumption of an air conditioner based on the estimated value of the thermal load input from the thermal load estimation part 113, and estimates the electricity bill for one day based on it. The prediction of the electricity bill is performed with reference to data such as the device characteristic data 124 and the electricity bill table 125 stored in the storage unit. One operation schedule is finally selected from the operation schedule list 123 based on the result of comparing the predicted electricity rate and the daily target value input from the target value setting unit 111, and is output to the control signal generation unit 114.

  The thermal load estimation unit 113 calculates the thermal load for setting the target room temperature of the operation schedule input from the operation schedule selection unit 112 from the environment information 122 stored in the storage unit 12 every predetermined time. The period for calculating the heat load is preferably 5 minutes, 10 minutes, 30 minutes, 1 hour, or the like.

  The heat load is calculated by any known method. An existing heat load calculation program may be used. For example, heat generated from a heat source such as a person based on data related to a heat source such as a person, lighting, or OA equipment included in the environmental information 122, heat insulation characteristics of a building, window position, window opening area, outside air temperature prediction data, etc. Obtain heat transfer from the building outer wall, solar radiation from windows, and sensible heat load from outside air. In addition, the latent heat load caused by the entry and exit of water vapor due to the human body, intake outside air, and the like is obtained. Then, the sum of the sensible heat load and the latent heat load is calculated as the heat load.

  The control signal generation unit 114 generates a control signal for the air conditioner 20 based on the operation schedule selected by the operation schedule selection unit 112 and outputs the control signal to the air conditioner 20. For example, the control signal generation unit 114 generates and outputs a control signal including a signal for instructing a change in the target room temperature, operation or stop at a timing according to the selected operation schedule.

  The operation of the air conditioner control system 1 configured as described above will be described.

  The arithmetic processing unit 11 of the control device 10 executes the air conditioner control processing program stored in the storage unit 12, whereby the monthly target value list 121, the environment information 122, the operation schedule list 123, the device characteristic data 124, Based on the electricity price table 125, the daily target value is determined, the heat load is estimated, the operation schedule is selected, the control signal is generated, and the control signal is output to the air conditioner 20. The air conditioner 20 performs an air conditioning operation based on the control signal input from the control device 10.

  The air conditioner control process executed by the arithmetic processing unit 11 will be described in detail along the flowchart shown in FIG.

  First, the target value setting unit 111 acquires the monthly target value of the current month from the monthly target value list 121 of the storage unit 12 (step S101). The acquired monthly target value is divided by the number of days in the current month to determine the daily target value (step S102).

  Next, the driving schedule selection unit 112 sets the driving schedule level x to 0 (step S103), and then acquires the driving schedule of the level x (x = 0) from the storage unit 12 (step S104). Then, the acquired operation schedule is output to the thermal load estimation unit 113.

  The thermal load estimation unit 113 calculates an estimated value of the thermal load for achieving the target room temperature of the operation schedule input from the operation schedule selection unit 112 based on the environmental information 122 read from the storage unit 12 at predetermined time intervals. (Step S105). The period for calculating the thermal load is, for example, 5 minutes, 10 minutes, 30 minutes, 1 hour. The thermal load estimation unit 113 outputs the calculated thermal load to the target value setting unit 111 and the operation schedule selection unit 112.

  The target value setting unit 111 determines a thermal load level indicating the magnitude of the thermal load on the current day from the thermal load data input from the thermal load estimation unit 113 (step S106). Here, the judgment level is divided into three levels of large, medium, and small according to the magnitude of the thermal load. The classification method of the heat load level may be any method. For example, a threshold value may be set in advance, and the thermal load level may be divided using the threshold value as a boundary.

  Thereafter, the target value setting unit 111 multiplies the daily target value Td determined in step S102 by a predetermined rate β according to the determined thermal load level on that day (step S107). For example, β is 1.1 when it is determined in step S106 that the heat load level is high, β is 1 when it is determined that the heat load level is medium, and β is 0.9 when it is determined that the heat load level is low. The daily target value Td re-determined in this way is output to the operation schedule selection unit 112.

  The operation schedule selection unit 112 stores, in the storage unit 12, the operating power (power consumption) of the air conditioner 20 necessary for removing the thermal load based on the thermal load data input from the thermal load estimation unit 113. It is obtained by referring to the device characteristic data 124. Then, referring to the electricity rate table 125 stored in the storage unit 12, the electricity rate for each time zone is calculated from the operating power for each time zone, and the total amount for the day is derived (step S108). Then, it is determined whether or not the total amount of electricity charges for one day is equal to or less than the target value Td determined in step S107 (step S109).

  When the electricity bill for one day is equal to or less than the target value Td (step S109: Yes), the operation schedule selection unit 112 selects an operation schedule of level x (x = 0) and outputs it to the control signal generation unit 114. (Step S110).

  When the electricity bill for one day exceeds the target value Td (step S109: No), x is initially 0 and not x = 10 (step S111: No), so x is increased by 1 (step S112). The operation schedule selection unit 112 acquires the operation program of level x from the storage unit 12 and outputs it to the thermal load estimation unit 113 (step S113).

  The thermal load estimation unit 113 recalculates the thermal load for setting the target room temperature of the operation schedule input from the operation schedule selection unit 112 based on the environment information 122 read from the storage unit 12 every predetermined time (step) S114). The thermal load estimation unit 113 outputs the recalculated thermal load to the operation schedule selection unit 112.

  Then, it returns to step S108, and the operation schedule selection part 112 calculates the electric bill for every time slot | zone based on the data of the thermal load input from the thermal load estimation part 113, and calculates | requires the electric bill for one day (step) S108).

  Here, although the heat load is recalculated in step S114, the target value Td is not changed as in step S107 based on the recalculated heat load. Even when an operation schedule with different levels is selected, multiplying by the coefficient β according to the heat load level may cause the target amount to be set lower, so select an operation schedule that lowers the heat load more than necessary. It becomes. Therefore, in the present embodiment, the target value Td is set based on the load when the driving is performed as a reference, for example, when the driving is performed according to the level 0 driving schedule.

  It is determined whether the daily electricity price recalculated in step S108 is less than or equal to the target value Td. If the electricity price is less than or equal to the target value Td (step S109: Yes), the operation schedule selecting unit 112 The operation schedule for x is selected and output to the control signal generator 114 (step S110).

  When the electricity bill for one day exceeds the target value Td (step S109: No), after confirming that x = 10 is not satisfied (step S111: No), x is increased by 1 (step S112), and the operation is started. The schedule selection unit 112 acquires the operation schedule of level x from the storage unit 12 and outputs it to the thermal load estimation unit 113 (step S113). And the thermal load estimation part 113 recalculates a thermal load (step S114).

  In this way, unless x = 10, steps S108, S109, and S111 to S114 are repeated until the daily electricity bill is equal to or less than the target value Td. Since the heat load is smaller when the lower-level operation schedule is selected, the electricity bill is also lower. Through the above steps, the operation schedule selection unit 112 selects an operation schedule at a level at which the daily electricity bill is equal to or less than the target value Td, and outputs the operation schedule to the control signal generation unit 114.

  On the other hand, when x = 10 is reached in step S110 without the daily electricity charge being equal to or less than the target value Td (step S111: Yes), a driving schedule of level 10 is selected (step S115), and a control signal is generated. Output to the unit 114.

  The control signal generation unit 114 generates a control signal for the air conditioner 20 based on the operation schedule input from the operation schedule selection unit 112 in step S110 or S115, and outputs the control signal to the air conditioner 20 (step S116). For example, the control signal generation unit 114 generates and outputs a signal including a signal for instructing a change in the target room temperature, an operation or a stop at a timing according to the selected operation schedule. Thereafter, the process ends.

  By executing the air conditioner control process described above, the control device 10 sets a daily target value that has a difference depending on the estimated thermal load. Then, the operation schedule at the highest level is selected from among the operation schedules in which the predicted electricity rate falls below the daily target value for the first time, that is, the operation schedule in which the predicted electricity rate falls below the daily target value. If the electricity rate predicted by any level of the operation schedule does not fall below the daily target value, the operation schedule of the lowest level 10 is selected.

  If control is performed to keep the daily target value constant regardless of the thermal load, operation is performed with a level 0 program when the thermal load level is low, but when the thermal load level is high, the level is There may be driving of 6 or more, and a great difference occurs in comfort. On the other hand, in the case where the daily target value has a difference according to the heat load as in the present embodiment, even if the heat load level is large, for example, in the range of levels 2 to 4 Driving becomes possible, and the difference in comfort can be reduced.

  As described above, according to the present embodiment, the thermal load when operating according to the operation schedule of level 0 in the operation schedule list 123 stored in advance in the storage unit 12 is estimated, and the estimated heat When the daily target value is determined according to the magnitude of the load, the heat load is estimated based on the operation schedule temporarily selected from 0 to the lower level in order, and the air conditioner is operated so as to remove the estimated heat load The operation schedule when the electricity charge of the first time becomes equal to or less than the daily target value is selected, and a control signal for operating with the selected operation schedule is generated and output to the air conditioner 20. As a result, an air-conditioning operation capable of maintaining the highest comfort within a range where the electricity rate is equal to or less than the daily target value is possible.

  In addition, because the daily target value varies depending on the expected heat load, and the operation schedule that matches the daily target value is selected, the comfort level is maintained above a certain level even if the heat load is large or small depending on the day. Can be kept in. For example, in summer, it is possible to reduce electricity charges on a cool day (day with a small heat load) without compromising comfort, and on a hot day (day with a large heat load) to drive at a relaxed target value. , Comfort does not deteriorate more than necessary, and people in the room are not forced to endure.

  Furthermore, since the environmental information 122 used for estimating the heat load includes weather forecast information and the like, the heat load is estimated in consideration of the weather forecast, and the daily target value is set more appropriately based on the heat load. And more comfortable air-conditioning operation becomes possible.

Embodiment 2. FIG.
The overall configuration of the air conditioner control system 1 in the second embodiment of the present invention is the same as the configuration in the first embodiment. Since the contents of the operation schedule list 223 stored in the storage unit 12 and the contents of the air conditioner control process executed by the arithmetic processing unit 11 are different from those in the first embodiment, these will be described in detail with reference to FIGS.

  Similarly to the operation schedule list 123 of the first embodiment, the operation schedule list 223 according to the present embodiment is a list set for each month, and ranks the plurality of operation schedules of the air conditioner 20 according to the power consumption. It is a list that is attached. The example of FIG. 4 shows a driving schedule list 223 for a specific month in summer, and includes driving schedules from the highest level 0 to the lowest 10 arranged in descending order of power consumption.

  Each operation schedule in the operation schedule list 223 includes information such as an operation type such as air conditioning and the like, an operation start time, an end time, and a reference temperature, as in the operation schedule list 123 of the first embodiment. In addition to this, the operation schedule list 223 includes information on the level of the selection start thermal load at which the operation schedule selection unit 112 starts selection.

  The arithmetic processing unit 11 of the control device 10 executes the air conditioner control processing program stored in the storage unit 12, whereby the monthly target value list 121, the environment information 122, the operation schedule list 223, the device characteristic data 124, Based on the electricity price table 125, the daily target value is determined, the heat load is estimated, the operation schedule is selected, the control signal is generated, and the control signal is output to the air conditioner 20. The air conditioner 20 performs an air conditioning operation based on the control signal input from the control device 10.

  The air conditioner control process executed by the arithmetic processing unit 11 will be described in detail along the flowchart shown in FIG.

  First, the target value setting unit 111 acquires a monthly target value for the current month from the monthly target value list 121 of the storage unit 12 (step S201). The acquired monthly target value is divided by the number of days in the current month to determine the daily target value (step S202).

  Next, the driving schedule selection unit 112 sets the driving schedule level x to 0 (step S203), and then acquires the driving schedule of the level x (x = 0) from the storage unit 12 (step S204). Then, the acquired operation schedule is output to the thermal load estimation unit 113.

  The thermal load estimation unit 113 calculates an estimated value of the thermal load for achieving the target room temperature of the operation schedule input from the operation schedule selection unit 112 based on the environmental information 122 read from the storage unit 12 at predetermined time intervals. (Step S205). The period for calculating the thermal load is, for example, 5 minutes, 10 minutes, 30 minutes, 1 hour. The thermal load estimation unit 113 outputs the calculated thermal load to the operation schedule selection unit 112.

  The operation schedule selection unit 112 determines a thermal load level indicating the magnitude of the thermal load on the current day from the thermal load data input from the thermal load estimation unit 113 (step S206). Here, the judgment level is divided into three levels of large, medium, and small according to the magnitude of the thermal load.

  Thereafter, the operation schedule selection unit 112 refers to the selection start thermal load level in the operation schedule list 223, and selects the level x of the operation schedule corresponding to the thermal load level determined in step S206 (step S207). In the case of the example in FIG. 4, if it is determined in step S206 that the thermal load level is high, level 0 is selected, if it is determined that the thermal load level is medium, level 2 is selected, and if it is determined that the thermal load level is low, the level is selected. 4 is selected.

  The operation schedule selection unit 112 acquires the operation program at the level x selected in step S207 from the storage unit 12 and outputs it to the thermal load estimation unit 113 (step S208).

  The thermal load estimation unit 113 recalculates the thermal load for setting the target room temperature of the operation schedule input from the operation schedule selection unit 112 based on the environment information 122 read from the storage unit 12 every predetermined time (step) S209). The thermal load estimation unit 113 outputs the recalculated thermal load to the operation schedule selection unit 112.

  The operation schedule selection unit 112 stores, in the storage unit 12, the operating power (power consumption) of the air conditioner 20 necessary for removing the thermal load based on the thermal load data input from the thermal load estimation unit 113. It is obtained by referring to the device characteristic data 124. Then, with reference to the electricity rate table 125 stored in the storage unit 12, the electricity rate for each time zone is calculated from the operating power for each time zone, and the total price per day is derived (step S210). Then, it is determined whether or not the total amount of electricity charges per day is equal to or less than the target value Td (step S211).

  When the electricity bill for one day is equal to or less than the target value Td (step S211: Yes), the operation schedule selection unit 112 selects the operation schedule of level x and outputs it to the control signal generation unit 114 (step S212). .

  When the electricity price for one day exceeds the target value Td (step S211: No), x = 0, 2, and 4 are not initially x = 10 (step S213: No), so x is increased by 1. (Step S214), the operation schedule selection unit 112 acquires the operation program of level x from the storage unit 12, and outputs it to the thermal load estimation unit 113 (step S215).

  The thermal load estimation unit 113 recalculates the estimated value of the thermal load for achieving the target room temperature of the operation schedule input from the operation schedule selection unit 112 based on the environmental information 122 read from the storage unit 12 at predetermined time intervals. (Step S216). The thermal load estimation unit 113 outputs the recalculated thermal load to the operation schedule selection unit 112.

  Then, it returns to step S210 and the driving schedule selection part 112 calculates the electricity bill for every time slot | zone based on the data of the thermal load input from the thermal load estimation part 113 (step S210). It is determined whether the calculated daily total amount of the electricity charge is equal to or less than the target value Td. If the electricity charge is equal to or less than the target value Td (step S211: Yes), the operation schedule selecting unit 112 sets the level x Is selected and output to the control signal generator 114 (step S212).

  When the electricity bill for one day exceeds the target value Td (step S211: No), after confirming that x = 10 is not satisfied (step S213: No), x is increased by 1 (step S214), and the operation is started. The schedule selection unit 112 acquires the operation schedule of level x from the storage unit 12 and outputs it to the thermal load estimation unit 113 (step S215).

  In this way, unless x = 10, steps S210, S111, and S213 to S216 are repeated until the daily electricity bill is equal to or less than the target value Td. Since the heat load is smaller when the lower-level operation schedule is selected, the electricity bill is also lower. Through the above steps, the operation schedule selection unit 112 selects an operation schedule at a level at which the daily electricity bill is equal to or lower than the target value Td for the first time, and outputs the operation schedule to the control signal generation unit 114.

  On the other hand, if x = 10 in step S213 without the electric charge being equal to or less than the target value Td (step S213: Yes), a driving schedule of level 10 is selected (step S217), and the control signal generator 114 is notified. Output.

  The control signal generation unit 114 generates a control signal for the air conditioner 20 based on the operation schedule input from the operation schedule selection unit 112 in step S212 or step S217, and outputs the control signal to the air conditioner 20 (step S218). For example, the control signal generation unit 114 generates and outputs a signal including a signal indicating a change in target temperature, operation or stop at a timing according to the selected operation schedule.

  By executing the air conditioner control process described above, an operation schedule to start selection is set according to the estimated determination level of the thermal load, and an operation schedule in which the predicted electricity rate is lower than the daily target value for the first time is selected. In other words, the rank of the upper limit of the selectable operation schedule is set according to the estimated judgment level of the heat load, and the highest rank in the operation schedule where the predicted electricity rate is lower than the daily target value is below the upper limit rank. Select the driving schedule of the level. If the electricity rate predicted by any level of the operation schedule does not fall below the daily target value, the operation schedule of the lowest level 10 is selected.

  As described above, according to the present embodiment, the thermal load when operating according to the level 0 operation schedule in the operation schedule list 223 stored in advance in the storage unit 12 is estimated, and the estimated heat The air conditioner is configured to determine the operation schedule to start selection according to the magnitude of the load, estimate the heat load based on the operation schedule selected from the selection start level toward the lower order, and remove the estimated heat load. The operation schedule when the electricity charge when driving the vehicle becomes the daily target value or less for the first time is selected, and a control signal for operating with the selected operation schedule is generated and output to the air conditioner 20. As a result, since the operation schedule of the upper limit order that can be selected is changed depending on the expected heat load, it is possible to operate the air conditioner with less variation in comfort and suppressing power consumption. In other words, an operation schedule that reduces power consumption is selected on days when the heat load is low, and an operation schedule that maintains comfort by increasing power consumption is selected on days when the heat load is high.

Embodiment 3 FIG.
As shown in FIG. 6, the air conditioner control system 3 according to Embodiment 3 of the present invention includes a control device 30 and an air conditioner 23 controlled by the control device 30. Here, FIG. 6 shows a configuration with only one air conditioner 23, but an arbitrary number of air conditioners 23 are provided, and the control device 30 controls each air conditioner 23. The air conditioner is an air conditioner having a cooling function or a heating function. In the present embodiment, a case where the cooling operation is performed in summer or the like will be described.

  The control device 30 includes an arithmetic processing unit 31 and a storage unit 12. As in the first embodiment, the storage unit 12 stores a monthly target value list 121, environmental information 122, an operation schedule list 123, device characteristic data 124, an electricity rate table 125, a program executed by the arithmetic processing unit 31, and the like. doing.

  Among them, the device characteristic data 124 is the same as in the first embodiment, in addition to the catalog value indicating the input power required for each output capacity of the air conditioner, the actual data acquired from the air conditioner 23 by the arithmetic processing unit 31. Is included.

  The arithmetic processing unit 31 includes an operation result acquisition unit 315 in addition to the target value setting unit 111, the operation schedule selection unit 112, the thermal load estimation unit 113, and the control signal generation unit 114, as in the first embodiment. .

  Arithmetic processor 31 executes the same air conditioner control process as in the first and second embodiments. In parallel with the air conditioner control process, the operation result acquisition unit 315 of the arithmetic processing unit 31 consumes when the air conditioner 23 is operated based on the control signal generated by the control signal generation unit 114 by the air conditioner control process. Get power. The acquired power consumption is stored in the storage unit 12 in association with the estimated value of the thermal load calculated based on the operation schedule that is the basis for generating the control signal.

  For example, the relationship between the actual value of power consumption acquired by the operation result acquisition unit 315 and the estimated value of thermal load is compared with the relationship between the output capability and the catalog value of power consumption. Here, the output capacity of the air conditioner corresponds to a heat load when the air conditioner operates at a target temperature. As shown in FIG. 7, when the deviation between the actual value and the catalog value is equal to or greater than a predetermined value, the relational expression obtained by the least square method or the like with respect to the actual value is stored in the storage unit 12 and the actual result of the device characteristic data 124. Store as data. This performance data may be obtained for each range divided according to the outside air temperature and the size of the air conditioning load.

  When the operation schedule selection unit 112 calculates the electricity bill in step S108 in FIG. 3 or step S210 in FIG. 5, the latest performance data is used as the device characteristic data 124.

  In addition, the operation result acquisition unit 315 obtains a cumulative value Cd of the daily power consumption from the power consumption acquired from the air conditioner. In step S102 of FIG. 3 or step S202 of FIG. 5, the target value setting unit 111 obtains the difference between the previous day's target value Td and the cumulative value Cd. If Td <Cd, (Cd−Td) remains. A value obtained by subtracting the value divided by the number of days from the day target value for the day is set as a new day target value Td. On the other hand, in the case of Td> Cd, a value obtained by dividing the surplus (Td−Cd) by the remaining number of days in the month and added to the day target value for the day is set as a new day target value Td.

  As described above, according to the present embodiment, the relationship between the power consumption and the estimated value of the heat load is obtained based on the actual power consumption value acquired by the operation result acquisition unit 315 from the air conditioner 23. The operation schedule selection unit 112 calculates the electricity bill using the result. In addition, a value obtained by dividing the difference between the cumulative value of power consumption on the previous day and the daily target value by the remaining number of days in the month is added to or subtracted from the daily target value for that day. As a result, it is possible to more accurately calculate the expected electricity rate and to set an appropriate target in consideration of comfort and energy saving.

  As described above, the present invention stores a plurality of operation schedules related to an air conditioner in an operation schedule list in which a higher power consumption is ranked as a higher rank and stores the operation schedule in the operation schedule selected from the operation schedule list. In the operation schedule, the estimated value of the thermal load for a predetermined period when the machine is operated is calculated, and the predicted period for the power consumption of the predetermined period predicted based on the estimated value of the thermal load is lower than the target value for the period. An upper operation schedule is selected, and a control signal in accordance with the selected operation schedule is generated and output to the air conditioner. As a result, it is possible to operate the air conditioner according to the plan without giving a large difference in comfort.

  In addition, this invention is not limited to the said embodiment, Of course, the various change in the range which does not deviate from the summary of this invention is possible.

  For example, in the above embodiment, the target value setting unit 111 is large in accordance with the thermal load based on the thermal load estimation value calculated by the thermal load estimation unit 113 based on the level 0 operation schedule. However, the determination level may be divided into an arbitrary number of stages.

  In addition, as a method for classifying the judgment level according to the magnitude of the heat load, an example is given in which a threshold value is set in advance and the judgment level is divided on the basis of the threshold value. May be.

  As a first method, the average heat load Qm of the current month may be calculated based on the environmental information 122 including the weather forecast data for one month of the current month, and classified according to the ratio between the heat load and Qm of the current day. . For example, as shown in FIG. 8, if it is less than (Qm × 90%) on the current day, it is determined that the heat load level is low, and if it is less than (Qm × 90%) and less than (Qm × 110%), heat It is determined that the load level is medium, and if it is (Qm × 110%) or more, it is determined that the thermal load level is high. Accordingly, it is possible to determine an appropriate heat load level based on weather forecast data and the like, and a more comfortable air conditioning operation is possible.

  As a second method, load determination is performed in periods such as early, middle, and late in March and September when the temperature difference (difference in heat load) is large within one month. FIG. 9 shows an example in September. It is determined that the heat load level is high at the beginning of September, the heat load level is medium at the middle, and the heat load level is low at the end. In this case, the load determination criterion is the date. As shown in FIG. 9, the date for switching the heat load level is preferably determined from the weather results of the past several years. As a result, it is possible to determine the thermal load level only from the date, and the thermal load calculation process can be omitted.

  In the first embodiment, the target value is set by multiplying the target value by a predetermined coefficient corresponding to the large, medium, and small determination levels of the estimated value of the thermal load. You may make it multiply by the coefficient proportional to.

  Moreover, in the said embodiment, the electricity bill was estimated from the estimated value of the heat load, and the operation schedule that falls below the target value was selected for the first time. This means that the highest operation schedule is selected from among operation schedules in which the predicted electricity rate is lower than the target value. However, it is not necessarily the highest level. In order to realize a higher energy reduction amount, a lower operation schedule may be selected from the highest level by a predetermined number of levels.

  In addition, although the highest level 0 operation schedule is used as the basic operation schedule as the basis for determining the heat load level, if the heat load level can be appropriately classified, the basic operation schedule is an operation schedule of another level. But you can. For example, the lowest operation schedule may be used as the basic operation schedule.

  Moreover, in the said embodiment, although the example of the following air_conditionaing | cooling operation was demonstrated, the operation schedule lists 123 and 223 are set appropriately, and the thermal load estimation part 113 calculates the estimated value of the thermal load for heating. Thus, the heating operation can be similarly controlled.

  Moreover, although the case where the target value set by the target value setting unit is the electricity charge for one day has been described, the electricity charge for another period may be used, or another value related to power consumption may be used. For example, it may be a power consumption amount for a predetermined period such as half a day, a day, or a week. In this case, instead of the electricity bill calculated by the operation schedule selection unit 112, the amount of power consumption for a predetermined period is calculated and compared with the target value.

  In addition, by applying the air conditioner control processing program executed by the arithmetic processing units 11 and 31 of the above embodiment to an information terminal such as an existing server, the information terminal is controlled by the control devices 10 and 30 according to the present invention. It is also possible to function as.

  Such a program distribution method is arbitrary, for example, a computer-readable recording medium such as a CD-ROM (Compact Disk Read-Only Memory), a DVD (Digital Versatile Disk), an MO (Magneto Optical Disk), or a memory card. It may be stored and distributed in the network, or distributed via a communication network such as a mobile phone network or the Internet.

  DESCRIPTION OF SYMBOLS 1,3 Air-conditioner control system 10,30 Control apparatus, 20,23 Air-conditioner, 11,31 Arithmetic processing part, 111 Target value setting part, 112 Operation schedule selection part, 113 Thermal load estimation part, 114 Control signal generation part , 12 storage unit, 121 target value list, 122 environment information, 123, 223 operation schedule list, 124 device characteristic data, 125 electricity rate table, 315 operation result acquisition unit

Claims (16)

A storage unit storing an operation schedule list in which a plurality of operation schedules including information on the target temperature of the air conditioner are ranked with higher power consumption as a higher rank;
A period target value setting unit for setting a period target value for a certain period related to the power consumption of the air conditioner;
A thermal load estimator that calculates an estimated value of the thermal load for the predetermined period for operating the air conditioner to the target temperature by the operation schedule selected from the operation schedule list;
An operation schedule selection unit that selects an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
A control signal generation unit that generates a control signal according to the operation schedule selected by the operation schedule selection unit and outputs the control signal to the air conditioner,
Air conditioner control device. A storage unit storing an operation schedule list in which a plurality of operation schedules related to an air conditioner are ranked with higher power consumption as a higher rank,
A period target value setting unit for setting a period target value for a certain period related to the power consumption of the air conditioner;
A thermal load estimator that calculates an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule selected from the operation schedule list;
An operation schedule selection unit that selects an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
A control signal generation unit that generates a control signal according to the operation schedule selected by the operation schedule selection unit and outputs the control signal to the air conditioner, and
The operation schedule selection unit temporarily selects the operation schedule from the highest operation schedule to the lower order in order,
The thermal load estimation unit calculates an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule temporarily selected by the operation schedule list,
Until the period predicted value based on the estimated value of the thermal load falls below the period target value, the temporary selection of the operation schedule and the calculation of the estimated value of the thermal load are repeated.
The operation schedule selection unit finally selects an operation schedule when the predicted period value falls below the target period value for the first time,
The control signal generation unit generates a control signal according to the operation schedule finally selected by the operation schedule selection unit and outputs the control signal to the air conditioner .
Air-conditioning machine controller. The period target value setting unit sets the period target value corresponding to the estimated range of the thermal load calculated by the thermal load estimation unit based on a predetermined basic operation schedule in the operation schedule list. ,
The period target value corresponding to the range where the estimated value of the thermal load is large is set to be higher than the period target value corresponding to the small range.
The air conditioner control device according to claim 1 or 2 . A storage unit storing an operation schedule list in which a plurality of operation schedules related to an air conditioner are ranked with higher power consumption as a higher rank,
A period target value setting unit for setting a period target value for a certain period related to the power consumption of the air conditioner;
A thermal load estimator that calculates an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule selected from the operation schedule list;
An operation schedule selection unit that selects an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
A control signal generation unit that generates a control signal according to the operation schedule selected by the operation schedule selection unit and outputs the control signal to the air conditioner, and
The operation schedule selection unit determines the upper rank order of the operation schedule corresponding to the estimated range of the thermal load calculated by the thermal load estimation unit based on a predetermined basic operation schedule in the operation schedule list. Set, and select the highest driving schedule below the upper limit rank among the driving schedules where the predicted period value is lower than the target period value,
The order of the upper limit corresponding to the range where the estimated value of the thermal load is large is higher than the order of the upper limit corresponding to the small range .
Air-conditioning machine controller. The operation schedule selection unit temporarily selects an operation schedule from the upper limit operation schedule to the lower order in order,
The thermal load estimation unit calculates an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule temporarily selected by the operation schedule list,
Until the period predicted value based on the estimated value of the thermal load falls below the period target value, the temporary selection of the operation schedule and the calculation of the estimated value of the thermal load are repeated.
The operation schedule selection unit finally selects an operation schedule when the predicted period value falls below the target period value for the first time,
The control signal generation unit generates a control signal according to the operation schedule finally selected by the operation schedule selection unit and outputs the control signal to the air conditioner.
The air conditioner control device according to claim 4. The storage unit includes environmental information including at least one of weather prediction data, past weather performance data, data on a heat source of a space where the air conditioner operates, heat insulation data of a building, window position, and window opening area. Remember,
The thermal load estimation unit calculates an estimated value of the thermal load for the certain period based on the operation schedule selected by the operation schedule selection unit and the environment information.
The air conditioner control device according to any one of claims 1 to 5. Obtaining actual data of the power consumption of the air conditioner, further comprising a historical data acquisition unit for storing in the storage unit,
The operation schedule selection unit includes the estimated value of the thermal load calculated based on the operation schedule related to the operation of the air conditioner when the actual data is acquired, and the actual data stored in the storage unit. Based on the information indicating the relationship with the power consumption value, the period predicted value related to the power consumption for the certain period is calculated.
The air conditioner control device according to any one of claims 1 to 6. The period target value and the period predicted value are values related to the amount of power consumed per day,
The air conditioner control device according to any one of claims 1 to 7. The period target value and the period predicted value are values related to a daily electricity bill,
The air conditioner control device according to any one of claims 1 to 7. An air conditioner and the air conditioner control device according to any one of claims 1 to 9, which controls the air conditioner.
Air conditioner control system. An air conditioner control method performed by a control device for controlling an air conditioner,
A storage step of storing a plurality of operation schedules including information on the target temperature of the air conditioner, an operation schedule list in which higher power consumption is ranked higher,
A period target value setting step for setting a period target value for a certain period related to the power consumption of the air conditioner;
A thermal load estimation step of calculating an estimated value of the thermal load of the predetermined period for operating the air conditioner with the operation schedule selected from the operation schedule list to reach the target temperature ;
An operation schedule selection step of selecting an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
A control signal generation step of generating a control signal according to the operation schedule selected in the operation schedule selection step and outputting the control signal to the air conditioner,
Air conditioner control method.   An air conditioner control method performed by a control device for controlling an air conditioner,
  A storage step of storing a plurality of operation schedules related to the air conditioner, an operation schedule list in which higher power consumption is ranked higher,
  A period target value setting step for setting a period target value for a certain period related to the power consumption of the air conditioner;
  A thermal load estimation step for calculating an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule selected from the operation schedule list;
  An operation schedule selection step of selecting an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
  Generating a control signal according to the operation schedule selected in the operation schedule selection step and outputting the control signal to the air conditioner, and
  In the operation schedule selection step, the operation schedule is temporarily selected from the highest operation schedule to the lower order in order,
  In the thermal load estimation step, calculate an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule temporarily selected by the operation schedule list,
  Until the period predicted value based on the estimated value of the thermal load falls below the period target value, the temporary selection of the operation schedule and the calculation of the estimated value of the thermal load are repeated.
  In the operation schedule selection step, finally select an operation schedule when the predicted period value falls below the target period value for the first time,
  In the control signal generation step, a control signal according to the operation schedule finally selected in the operation schedule selection step is generated and output to the air conditioner.
  Air conditioner control method.   An air conditioner control method performed by a control device for controlling an air conditioner,
  A storage step of storing a plurality of operation schedules related to the air conditioner, an operation schedule list in which higher power consumption is ranked higher,
  A period target value setting step for setting a period target value for a certain period related to the power consumption of the air conditioner;
  A thermal load estimation step for calculating an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule selected from the operation schedule list;
  An operation schedule selection step of selecting an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
  Generating a control signal according to the operation schedule selected in the operation schedule selection step and outputting the control signal to the air conditioner, and
  In the operation schedule selection step, the rank of the upper limit of the operation schedule corresponding to the range of the estimated value of the thermal load calculated in the thermal load estimation step based on a predetermined basic operation schedule in the operation schedule list. Set, and select the highest driving schedule below the upper limit rank among the driving schedules where the predicted period value is lower than the target period value,
  The order of the upper limit corresponding to the range where the estimated value of the thermal load is large is higher than the order of the upper limit corresponding to the small range.
  Air conditioner control method. Computer
A storage unit that stores an operation schedule list in which a plurality of operation schedules including information on the target temperature of the air conditioner are ranked with higher power consumption as a higher rank,
A period target value setting unit for setting a period target value for a certain period related to the power consumption of the air conditioner;
A thermal load estimator that calculates an estimated value of the thermal load for the certain period for operating the air conditioner to the target temperature by the operation schedule selected from the operation schedule list;
An operation schedule selection unit that selects an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
A control signal generation unit that generates a control signal according to the operation schedule selected by the operation schedule selection unit and outputs the control signal to the air conditioner;
Program to function as.   Computer
  A storage unit that stores an operation schedule list in which a plurality of operation schedules related to an air conditioner are ranked with higher power consumption as a higher rank,
  A period target value setting unit for setting a period target value for a certain period related to the power consumption of the air conditioner;
  A thermal load estimator that calculates an estimated value of the thermal load for the predetermined period when the air conditioner is operated with the operation schedule selected from the operation schedule list;
  An operation schedule selection unit that selects an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
  A control signal generation unit that generates a control signal according to the operation schedule selected by the operation schedule selection unit and outputs the control signal to the air conditioner;
  A program that functions as
  The operation schedule selection unit temporarily selects the operation schedule from the highest operation schedule to the lower order in order,
  The thermal load estimation unit calculates an estimated value of the thermal load for the certain period when the air conditioner is operated with the operation schedule temporarily selected by the operation schedule list,
  Until the period predicted value based on the estimated value of the thermal load falls below the period target value, the temporary selection of the operation schedule and the calculation of the estimated value of the thermal load are repeated.
  The operation schedule selection unit finally selects an operation schedule when the predicted period value falls below the target period value for the first time,
  The control signal generation unit generates a control signal according to the operation schedule finally selected by the operation schedule selection unit and outputs the control signal to the air conditioner.
  program.   Computer
  A storage unit that stores an operation schedule list in which a plurality of operation schedules related to an air conditioner are ranked with higher power consumption as a higher rank,
  A period target value setting unit for setting a period target value for a certain period related to the power consumption of the air conditioner;
  A thermal load estimator that calculates an estimated value of the thermal load for the predetermined period when the air conditioner is operated with the operation schedule selected from the operation schedule list;
  An operation schedule selection unit that selects an upper operation schedule among operation schedules in which the period predicted value related to the power consumption of the certain period predicted based on the estimated value of the thermal load is lower than the period target value;
  A control signal generation unit that generates a control signal according to the operation schedule selected by the operation schedule selection unit and outputs the control signal to the air conditioner;
  A program that functions as
  The operation schedule selection unit determines the upper rank order of the operation schedule corresponding to the estimated range of the thermal load calculated by the thermal load estimation unit based on a predetermined basic operation schedule in the operation schedule list. Set, and select the highest driving schedule below the upper limit rank among the driving schedules where the predicted period value is lower than the target period value,
  The order of the upper limit corresponding to the range where the estimated value of the thermal load is large is higher than the order of the upper limit corresponding to the small range.
  program.

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