JP2017131074A - Demand controller - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a demand controller capable of adjusting demand control between a plurality of systems.SOLUTION: A demand controller 20 includes: an acquisition unit 21 that from an apparatus-by-apparatus power measurement device 130 for individually calculating, from a power waveform of a total power value, a first use power value, a use power value of an air conditioner belonging to a first apparatus group, and a second use power value, a use power value of a predetermined apparatus belonging to a second apparatus group, acquires the first use power value and the second use power value; an instruction determination unit 22 that, on the basis of the first use power value and the second use power value, determines a first instruction with respect to suppression of use power of the first apparatus group and a second instruction with respect to suppression of use power of the second apparatus group; an A system instruction unit 23a that transmits the first instruction to an A system air conditioning controller 30; and a B system instruction unit 23b that transmits the second instruction to a B system air conditioning controller.SELECTED DRAWING: Figure 18

Description

  The present invention relates to a demand control apparatus.

  Demand control that controls the power usage of devices so that the power consumption during demand time does not exceed the target demand (average power during demand time) in areas with many devices that consume power, such as office buildings May be performed. For example, in Patent Document 1 (Japanese Patent Laid-Open No. 2007-212038) and Patent Document 2 (Japanese Patent Laid-Open No. 2002-147819), an area such as a building is provided by one demand control device provided for one air conditioner system. A control for achieving a given target demand is disclosed.

  Application of BEMS (Building Energy Management System) is conceivable as a method of expanding demand control described in Patent Document 1 over an entire area such as an office building. However, since measurement is performed for each breaker in BEMS, although it is possible to grasp for each floor or each domain, it is difficult to grasp the power used for each equipment system across a plurality of floors or a plurality of domains. Therefore, in order to apply BEMS to the entire area of an office building or the like, it is necessary to increase the number of measurement points, and since it requires a large number of measurement devices, it is considered difficult to implement due to economic problems. .

  Also, in areas where a large number of devices are provided, power is consumed by multiple systems that are branched from the main power line for reasons such as different types of devices. Demand control may be performed by using.

  For example, a plurality of systems such as an air conditioner system including a plurality of air conditioner indoor units and one or a plurality of air conditioner outdoor units, a lighting device system including a plurality of lighting devices, and other equipment systems including other devices can be considered. Further, when the air conditioner system is viewed in more detail, the air conditioner belonging to the A system is demand-controlled by the control device for the A system, and the air conditioner belonging to the B system is demand controlled by the control device for the B system. There is also a case that is done. In such a case, since the demand control of the air conditioner is generally performed by connecting the air conditioning control device and the main power meter, a plurality of controls such as a control device for the A system and a control device for the B system are used. Coexistence is difficult when there is a device. The above-described Patent Document 1 and Patent Document 2 are configured to achieve the target demand of the entire area with one demand control device, and other demand control devices provided in the same area It does not allow optimal demand control while exchanging data. For example, a control device for system A was developed by company A, a control device for system B was developed by company B, a control device for system A and a control device for system B, and a control device for system A Although the power of the A system device can be grasped, the control device for the B system does not measure the power of the B system device, the control flow of the demand control is completely different, the data configuration and the communication method are It is conceivable that the control device for the A system and the control device for the B system cannot be connected because they are completely different.

  An object of the present invention is to adjust demand control between a plurality of systems when a plurality of devices in an area subject to demand control are divided into a plurality of systems and demand-controlled by a plurality of control devices. It is to provide a demand control device that can be used.

  The demand control device according to the first aspect of the present invention is configured so that the total power consumption of all target devices including the first device group including the air conditioners and the second device group including the predetermined devices falls within the upper limit value in a predetermined time period. A demand control device that performs demand control by sending an instruction to the first control device that controls the first device group and the second control device that controls the second device group, and is first based on the power waveform of the total power value. From a power measuring device that separately calculates a first used power value that is a used power value of an air conditioner belonging to a device group and a second used power value that is a used power value of a predetermined device belonging to the second device group, Based on the acquisition unit that acquires the power value and the second used power value, the first used power value and the second used power value, the first instruction regarding the suppression of the used power of the first device group and the used power of the second device group Decided on the second instruction regarding the suppression of That includes an instruction determination unit, a first instruction unit for sending the first indication to the first control unit, a second instruction unit for sending a second instruction to the second control device.

  In the prior art, where there was no demand control device according to the first aspect, the first control device and the second control device had to perform demand control individually based only on the total power value. In other words, excessive suppression of power consumption has occurred, or suppression has been biased to only one of the first device group and the second device group. On the other hand, when there is a demand control device according to the first aspect, the first instruction and the second device relating to the suppression of the used power of the first device group based on the first used power value and the second used power value by the instruction determining unit. Since the second instruction relating to the suppression of the power consumption of the group can be determined, it is possible to determine the first instruction and the second instruction that can be suppressed with good balance using both the first power consumption value and the second power consumption value.

  The demand control device according to a second aspect of the present invention is the demand control device according to the first aspect, wherein the acquisition unit acquires the total power value, the first used power value, and the second used power value in real time, and determines the instruction. The unit predicts the total power consumption at the end of the predetermined time period based on the total power value, the first power consumption value, and the second power consumption value acquired in real time by the acquisition unit, and gives the first instruction and the second instruction. To decide.

  In the demand control device according to the second aspect, not only the total power value, but also the first used power value and the second used power value are acquired in real time, and therefore the difference in fluctuation between the first used power value and the second used power value. The first instruction and the second instruction can be determined in consideration of the above.

  A demand control device according to a third aspect of the present invention is the demand control device according to the first aspect or the second aspect, wherein the instruction determining unit weights the first device group and the second device group and uses the power consumption. It is configured to be able to suppress and change the weighting.

  In the demand control device according to the third aspect, since the power consumption can be suppressed by weighting the first device group and the second device group, the power consumption of the first device group and the second device group can be reduced. Weighting for optimizing the effect and influence of suppression can be performed. Moreover, since weighting can be changed, weighting can be changed according to the condition of the electric power used of a 1st apparatus group and a 2nd apparatus group. As a result, adjustment is made so as to reduce the bias between the first device group and the second device group for suppressing the power consumption by optimizing the weighting for suppressing the power consumption of the first device group and the second device group. Can do.

  A demand control device according to a fourth aspect of the present invention is the demand control device according to the third aspect, wherein the instruction determination unit weights the suppression of power consumption for the first device group and the second device group in the middle of a predetermined time period. Is configured to be changeable.

  In the demand control device according to the fourth aspect, since the weighting can be changed in the middle of the predetermined time period, the weighting can be changed according to the state of suppression of the power consumption of the first device group and the second device group.

  A demand control device according to a fifth aspect of the present invention is the demand control device according to any one of the first to fourth aspects, wherein the acquisition unit is a room in a space that is air-conditioned by the first device group consisting of air conditioners. The temperature is configured to be acquired, and the instruction determining unit determines that the room temperature environment has deteriorated from the room temperature when determining the first instruction and the second instruction based on the first power consumption value and the second power consumption value. The first instruction and the second instruction can be changed depending on whether or not the determination is made.

  In the demand control device according to the fifth aspect, since the instruction determination unit can change the contents of the first instruction and the second instruction when the indoor temperature environment deteriorates, the deterioration of the temperature environment is prevented by the first instruction and the second instruction. Can be relaxed.

  A demand control device according to a sixth aspect of the present invention is the demand control device according to any of the first to fifth aspects, wherein the first control device and the second control device are instructed to indicate an instruction value relating to a suppression level. The first instruction unit is configured to use, as a first instruction, a first instruction value that lowers the suppression level of the first device group relative to the suppression level when the demand control is not performed. The second instruction unit sends, as a second instruction, a second instruction value that lowers the suppression level of the second device group relative to the suppression level when the demand control is not performed, Is.

  In the demand control device according to the sixth aspect, the first instruction value sent from the first instruction unit to the first control device is used to reduce the suppression level of the first device group, and the second instruction sent from the second instruction unit to the second control device. By reducing the suppression level of the second device group by the value, the suppression levels of the first device group and the second device group can be individually set.

  The demand control device according to a seventh aspect of the present invention is the demand control device according to any one of the first to sixth aspects, wherein the first device group includes a power measurement sensor for measuring the power of the air conditioner, The first control device is configured to be able to acquire the first used power value from the data from the power measurement sensor, and the acquisition unit gives the first used power value given from the power measurement sensor and the first control device. It is comprised so that it can select and acquire the 1st used electric power value.

  In the demand control device according to the seventh aspect, since the acquisition unit can select the case where the first power consumption value is acquired from the power measurement sensor and the case where it is acquired from the first control device, the first power usage with higher accuracy can be selected. The instruction determination unit can determine the first instruction and the second instruction using the value.

  In the demand control device according to the first aspect of the present invention, the demand control can be well adjusted between the system including the first device group and the system including the second device group.

  In the demand control device according to the second aspect of the present invention, the function of adjusting demand control between the system including the first device group and the system including the second device group is improved.

  In the demand control device according to the third aspect of the present invention, it is possible to reduce the adverse effect due to the suppression of power consumption while increasing the effect of suppression of power consumption for the first device group and the second device group.

  In the demand control device according to the fourth aspect of the present invention, the demand control target can be reliably achieved, and at the same time, the adverse effect due to the suppression of power consumption can be easily reduced.

  In the demand control device according to the fifth aspect of the present invention, it is possible to achieve the demand control target while suppressing deterioration of the indoor temperature environment.

  In the demand control device according to the sixth aspect of the present invention, it is possible to easily send an instruction to balance the first used power value and the second used power value.

  In the demand control device according to the seventh aspect of the present invention, the accuracy of demand control can be improved for the system including the first device group.

The block diagram which shows the outline | summary of the electric equipment system to which the demand control apparatus which concerns on 1st Embodiment was applied. The figure for demonstrating an example of the conventional demand control. The graph for demonstrating the total electric energy used by an example of the conventional demand control. The graph for demonstrating the suppression level in an example of the conventional demand control. The graph which shows the electric energy used of each system | strain in an example of the conventional demand control. The pie chart which shows the ratio of the electric power used of each system | strain in an example of the conventional demand control. The pie chart which shows the electric energy used of each system | strain in which the conventional demand control of FIG. 3 was performed. The figure for demonstrating the other example of the conventional demand control. The graph for demonstrating the total electric energy used by the other example of the conventional demand control. The graph for demonstrating the suppression level in the other example of the conventional demand control. The graph which shows the electric energy used of each system | strain in the other example of the conventional demand control. The pie chart which shows the electric power consumption of each system | strain in which the conventional demand control of FIG. 8 was performed. The figure for demonstrating the demand control of 1st Embodiment. The graph for demonstrating the total electric energy used by the demand control of 1st Embodiment. The graph for demonstrating the suppression level in the demand control of 1st Embodiment. The graph for demonstrating the electric energy used of each system | strain in the demand control of 1st Embodiment. The pie chart for demonstrating the ratio of the electric power used of each system | strain in the demand control of 1st Embodiment. The block diagram for demonstrating the structure of the demand control apparatus which concerns on 1st Embodiment. The block diagram which shows the outline | summary of the electric equipment system to which the demand control apparatus which concerns on 2nd Embodiment was applied. The flowchart which shows an example of the electric power reduction operation | movement by the demand control apparatus which concerns on 2nd Embodiment. The flowchart for demonstrating the operation | movement of the electric power reduction of the non-management apparatus group by the demand control apparatus which concerns on 2nd Embodiment.

<First Embodiment>
(1) Schematic Configuration of Entire System A schematic configuration of the entire system to which a demand control device according to an embodiment of the present invention is applied will be described with reference to FIG. The electrical equipment system 10 includes, for example, a plurality of air conditioner outdoor units 31, 41, a plurality of air conditioner indoor units 32, 42, and a plurality of lighting devices 51 provided in a demand control target area Ar1 such as an office building or a factory. It is included as an electrical device to which power is supplied through the power line 110.

  The air conditioner outdoor unit 31 and the plurality of air conditioner indoor units 32 belonging to the device group of the A system are connected between the devices in the A system such as the proportion of the air conditioning burden and the distribution ratio of the electric power used by the A system air conditioning control device 30. Control related to adjustment is performed. The operation control of the air conditioning outdoor unit 31 itself is performed by a built-in outdoor control device (not shown), and the operation control of the air conditioning indoor unit 32 itself is performed by a built-in indoor control device (not shown). Similarly, the air-conditioning outdoor unit 41 and the plurality of air-conditioning indoor units 42 belonging to the B-system device group are controlled by the B-system air-conditioning control device 40 regarding adjustments between devices in the B-system. Operation control of the air-conditioning outdoor unit 41 and the air-conditioning indoor unit 32 itself is performed by a built-in outdoor control device (not shown) and an indoor control device (not shown), respectively. In addition, the plurality of lighting devices 51 belonging to the C system device group are controlled by the C system lighting control device 50 regarding adjustments between devices in the C system such as a distribution ratio of power used. The illumination device 51 is controlled by the C-system illumination control device 50 to turn on / off and / or dimm. Therefore, when the suppression level of any lighting device 51 among the plurality of lighting devices 51 is reduced by the C-system lighting control device 50, for example, the brightness of the lighting device 51 is reduced to match the power used, or illumination is performed. The device 51 is turned off. That is, the A system air conditioning control device 30 is configured to be capable of demand control using the air conditioning outdoor unit 31 and the plurality of air conditioning indoor units 32 belonging to the A system, and the air conditioning outdoor unit 41 and the plurality of air conditioning indoor units 42 belonging to the B system are configured. In other words, the B system air conditioning control device 40 is configured to be capable of demand control, and the C system lighting control device 50 is configured to be capable of demand control using a plurality of lighting devices 51 belonging to the C system.

  The A-system air conditioning control device 30 uses the data relating to each used power input from the power measurement sensor 33 for measuring the used power of the controlled air-conditioning outdoor unit 31 and the air-conditioning indoor unit 32 to the A-system. It is comprised so that the electric power consumption of the whole apparatus which can belong can be grasped | ascertained. In addition, the A-system air conditioning control device 30 uses the data related to each indoor temperature input from the indoor temperature sensor 34 for measuring the indoor temperature of the controlled air-conditioning indoor unit 32 to use each air-conditioned room belonging to the A-system. It is comprised so that the indoor temperature of the air-conditioning object space of the machine 32 can be grasped | ascertained.

  A backbone power supply 100 is connected to the electrical equipment system 10, and power is supplied through the backbone power line 110. The value of the total power supplied to the demand control target area Ar <b> 1 is referred to as a total power value (kW). In this electrical equipment system 10, the value of the power supplied through the backbone power line 110 is the total power value. The power supplied from the main power line 110 is measured by the main power meter 120. The main power meter 120 is, for example, a pulse power meter used in demand control. However, in the case of the electrical device system 10, the device-specific power measurement device 130 included in the electrical device system 10 has a function of measuring the basic power. In addition, the device-specific power measurement device 130 can distinguish the power for each device from the power waveform of the main power line 110. Therefore, from the total power value supplied through the main power line 110, for example, the power used by the air conditioner and the lighting device can be distinguished and measured, and the power used for the air conditioning and the power used for the lighting can be distinguished and measured. it can. Further, the device-specific power measuring device 130 measures the power used by the A system and the power used by the B system separately from the difference in the power waveform caused by the difference between the compressors built in the air conditioning outdoor units 31 and 41. be able to. Such a device-specific power measurement device 130 can be realized by using a technique described in, for example, Japanese Patent Laid-Open No. 2000-292465, Japanese Patent No. 5644774, and / or Japanese Patent Laid-Open No. 2013-238523.

  For example, the power waveform of the air conditioner outdoor unit 31 can be acquired by operating only the A system air conditioner outdoor unit 31 during the test operation. Next, the power waveform of the air conditioning indoor unit 32 can be acquired by operating only the A system air conditioning indoor unit 32 during the trial operation. Similarly, the power waveforms of the B-system air-conditioning outdoor unit 41 and the air-conditioning indoor unit 42 and the C-system lighting device 51 can be acquired during the trial operation. By using the power waveform for each device acquired as described above, the power measuring device for each device 130 determines from the power waveform of the main power line 110 that the air conditioning outdoor unit 31, the air conditioning indoor unit 32, and the A system belonging to the A system. The A system power value of the air conditioning control device 30, the B system power value of the air conditioning outdoor unit 41, the air conditioning indoor unit 42 and the B system air conditioning control device 40 belonging to the B system, and the lighting device 51 and the C system lighting control device 50 Each of the C grid power values can be measured.

  Comprehensive demand control of the electrical equipment system 10 is performed by the demand control apparatus 20 that acquires the A-system power value, the B-system power value, and the C-system power value from the device-specific power measurement apparatus 130. In order to make the explanation easy to understand, the demand control device 20 is positioned as a device to be added later to an existing system composed of devices other than the demand control device 20 and the device-specific power measurement device 130 in the electrical device system 10. Will be explained. However, the demand control device 20 cannot be incorporated into the electric device system 10 from the initial stage of designing the electric device system 10, but is designed by incorporating the demand control device 20 into the electric device system 10 from the initial stage. It doesn't matter.

  In order to help understand the merits of demand control performed using the demand control device 20, first, conventional demand control in which demand control is performed only by the A system will be described in (1-1) described later. The conventional demand control in which the demand control is performed in the A system and the B system is described in 1-2), and finally the demand control using the demand control device 20 according to the first embodiment is described in (1-3). To do. The target demand is an upper limit value of the average power for the demand time period. Achieving the target demand means that the upper limit value (target power amount) of the total power consumption used during the demand period is not exceeded from the viewpoint of the power consumption.

(1-1) When demand control is performed only by the A system Before the demand control device 20 is incorporated, the A system air conditioning control device 30 performs demand control of the air conditioning outdoor unit 31 and the plurality of air conditioning indoor units 32. It was. The demand control described with reference to FIGS. 2 to 7 is a conventional demand control performed without using the demand control device 20. Therefore, in the operation examples shown in FIGS. 2 to 7, the demand control device 20 and the device-specific power measurement device 130 are removed from the electrical device system 10 shown in FIG. 3 is an example of the operation of a system connected to an air conditioning control device 30. FIG. 2 shows an operation in the case where the demand control is performed only by the A-system air conditioning control device 30 with 60 minutes as the demand time period (predetermined time period). In FIG. 2 and FIGS. 8 and 13 to be described later, the value of the electric energy is shown with the decimal part rounded down. Therefore, the electric energy used in the A system and the electric power used in the B system with respect to the total electric energy used. The sum of the amount and the amount of power used by the C system may not match. FIG. 3 shows how the total power consumption changes over time, and shows the results of demand control performed by the A-system air conditioning control device 30.

  Before the demand control device 20 is incorporated, the A-system air-conditioning control device 30 can achieve the target value of the A-system according to the change in the total power value (change in the basic power) given from the main power meter 120. In addition, demand control is performed to reduce only the suppression level of the A system as required. In addition, when the suppression level is 100%, it is the same meaning as not performing suppression, and lowering the percentage of the suppression level, that is, reducing the suppression level means that the power used is reduced. .

  For example, when it is predicted from the change in the total power value that the target demand of the target area Ar1 is exceeded, the A system air conditioning control device 30 does not cooperate with the B system air conditioning control device 40 and the C system lighting control device 50, Decrease the suppression level of the A system by its own judgment. The A-system air conditioning control device 30 makes a determination for demand control at intervals of 5 minutes. For example, when 5 minutes have elapsed, the total power consumption has reached 7 kWh and has exceeded the standard power consumption of 5 kWh. The suppression level is 50%. However, since the total power consumption at the time when 10 minutes have passed is 12 kWh and still exceeds the reference power consumption of 10 kWh, the system A air conditioning control device 30 sets the suppression level to 25% when 15 minutes have passed. Yes. Then, when 30 minutes have elapsed, the A-system air conditioning control device 30 continues the demand control for setting the suppression level to 25% until the total power consumption becomes 28 kW and falls below the reference power amount of 30 kWh. Thereafter, when 35 minutes have passed, the suppression level is 100%.

  When the system A air conditioning control device 30 reduces the suppression level of the system A to 50%, for example, the capacity of the air conditioning outdoor unit 31 is limited, the set temperature of the air conditioning indoor unit 32 is relaxed, or the air conditioning indoor unit 32 The system A air-conditioning control device 30 causes the air-conditioning outdoor unit 31 and the plurality of air-conditioning indoor units 32 so that the power consumption of the air-conditioning outdoor unit 31 and the plurality of air-conditioning indoor units 32 becomes 50%, for example, by performing a thinning operation. To control. With such control, the system A air conditioning control device 30 performs control so as not to exceed the target demand while monitoring the way of changing the total power value.

  As shown in FIG. 5, in the above-described example, the B system air conditioning control device 40 and the C system lighting control device 50 do not perform demand control, so the B system air conditioning outdoor unit 41, the air conditioning indoor unit 42, and C The system lighting device 51 continues to operate while consuming a certain amount of power. In FIG. 6, the system A air conditioning outdoor unit 31 and the air conditioning indoor unit 32, the system B air conditioning outdoor unit 41 and the air conditioning indoor unit 42, and the system C lighting device 51 are operated at full output. The ratio of the used power to the total power value is shown. On the other hand, FIG. 7 shows the ratio of the used power amount for each system to the total used power amount in the demand time period when the demand control is performed. As described above, when the demand control is performed only with the A-system air conditioner outdoor unit 31 and the plurality of air-conditioner indoor units 32, the power reduction for preventing the target power amount from being exceeded is performed. And since the some air-conditioning indoor unit 32 bears, it turns out that the suppression level of A system | strain is extremely small.

(1-2) When demand control is performed in the A system and the B system Before the demand control device 20 is incorporated, the A system air conditioning control device 30 and the B system air conditioning control device 40 use the air conditioning outdoor unit 31 and the plurality of air conditioning rooms. The case where demand control is performed with respect to the machine 32, the air-conditioning outdoor unit 41, and the plurality of air-conditioning indoor units 42 will be described. The demand control described with reference to FIGS. 8 to 12 is a conventional demand control that is performed without using the demand control device 20. Therefore, in the operation example shown in FIGS. 8 to 12, the demand control device 20 and the device-specific power measurement device 130 are removed from the electrical device system 10 shown in FIG. It is an example of the operation | movement of the system which connected to the air-conditioning control apparatus 30 and connected the basic | foundation wattmeter 120 also to the B system | strain air-conditioning control apparatus 40. FIG. 8 shows an operation in the case where the demand control is performed by the A system air conditioning control device 30 and the B system air conditioning control device 40 with 60 minutes as a demand time limit (an example of a predetermined time period). However, the A-system air conditioning control device 30 and the B-system air conditioning control device 40 perform demand control independently of each other without cooperating with each other. FIG. 9 shows how the total power consumption changes over time, and shows the results of demand control performed by the A system air conditioning control device 30 and the B system air conditioning control device 40. ing.

  The A-system air conditioning control device 30 was configured in the same manner as that described in (1-1) above. Further, the B-system air conditioning control device 40 does not grasp the power consumption of all the devices belonging to the B-system, and the B-system air conditioning control device 40 changes the total power value given from the main power meter 120 according to the change in the total power value. In order to achieve the value, demand control is performed to reduce only the suppression level of the B system as necessary. When the A-system air conditioning control device 30 reduces the suppression level of the A-system, for example, the capacity of the air-conditioning outdoor unit 31 is limited, the set temperature of the air-conditioning indoor unit 32 is relaxed, or the thinning-out operation of the air-conditioning indoor unit 32 is performed. For example, when the suppression level is reduced, the B-system air conditioning control device 40, for example, turns on / off the air conditioning outdoor unit 41 and / or the plurality of air conditioning indoor units 42. It is assumed that the configuration is such that demand control is performed to reduce power consumption by changing the ON time by simple control such as OFF control.

  For example, when it is predicted from the change in the total power value that the target demand of the target area Ar1 is exceeded, the A system air conditioning control device 30 does not cooperate with the B system air conditioning control device 40 and the C system lighting control device 50, Decrease the suppression level of the A system by its own judgment. Moreover, the B system air-conditioning control apparatus 40 makes the suppression level of B system small by original judgment, without cooperating with the A system air conditioning control apparatus 30 and the C system lighting control apparatus 50.

  Similarly to the A system air conditioning control device 30, the B system air conditioning control device 40 also makes a determination for demand control at intervals of 5 minutes. For example, when 5 minutes have elapsed, the total power consumption has reached 7 kWh and has exceeded the standard power consumption of 5 kWh. The suppression level is 50%. Further, at the time when 10 minutes have elapsed, the B system air conditioning control device 40 sets the suppression level to 25%. However, since the total power consumption at the time when 10 minutes have elapsed is 11 kWh and still exceeds the reference power energy of 10 kWh, the grid A air conditioning control device 30 sets the suppression level to 50% when 15 minutes have elapsed, The B system air conditioning controller 40 sets the suppression level to 25%. The difference from the case described in (1-1) above is that demand control by the B-system air conditioning control device 40 is added, so that an increase in total power consumption is suppressed. As a result, the suppression level of the A-system air conditioning control device 30 is maintained at 50% without being reduced to 25% even when 15 minutes have elapsed. When 15 minutes have elapsed, the total power consumption is 14 kW, which is less than the standard power consumption of 15 kWh. Therefore, when 20 minutes have elapsed, both the A system and the B system have a suppression level of 100%. ing.

  As shown in FIG. 11, in the above example, the C system lighting control device 50 does not perform demand control, and therefore the C system lighting device 51 continues to operate while consuming a certain amount of power. The ratio of electric power used by each system when the A system air conditioner outdoor unit 31 and air conditioner indoor unit 32, the B system air conditioner outdoor unit 41 and the air conditioner indoor unit 42, and the C system illumination device 51 are operated at full output is as follows. This is the same as that shown in FIG. On the other hand, FIG. 12 shows the ratio of the used power amount for each system to the total used power amount in the demand time period when the demand control is performed. As described above, when the demand control is independently performed by the A-system outdoor unit 31 and the plurality of air-conditioning indoor units 32 and the B-system air-conditioning outdoor unit 41 and the plurality of air-conditioning indoor units 42, An imbalance is caused by a difference in power consumption between the device 30 and the B-system air conditioning control device 40 and / or a difference in demand control sequence. For example, as shown in FIG. 6, since the ratio of the power usage of the B system to the total power usage is small, the B system air conditioning control device 40 can reduce the power usage of the B system to reduce the overall target demand. If it tries to achieve, it turns out that the suppression level of B system | strain is very small by demand control compared with the suppression level of A system | strain.

(1-3) When performing demand control by adding the demand control device 20 The demand control device 20 is incorporated in the above-described existing system, and the demand control device 20 is transmitted through the A system air conditioning control device 30 and the B system air conditioning control device 40. The case where demand control is performed on the air-conditioning outdoor unit 31 and the plurality of air-conditioning indoor units 32 and the air-conditioning outdoor unit 41 and the plurality of air-conditioning indoor units 42 will be described. The demand control described with reference to FIGS. 13 to 17 is a demand control according to the first embodiment using the demand control device 20. Therefore, the operation example shown in FIGS. 13 to 17 is an example of the operation of the electrical device system 10 shown in FIG. FIG. 8 shows an operation in the case where demand control is performed by the demand control apparatus 20 with 60 minutes as a demand time period (predetermined time period). The system A air conditioning control device 30 and the system B air conditioning control device 40 perform demand control in cooperation with each other by the demand control device 20. FIG. 9 shows how the total power consumption changes over time, and shows the results of demand control performed by the demand control device 20. In addition, when the A system outdoor unit 31 and the air conditioning indoor unit 32, the B system air conditioning outdoor unit 41 and the air conditioning indoor unit 42, and the C system lighting device 51 are operated at full output, The ratio is the same as that shown in FIG.

  It is assumed that the A system air conditioning control device 30 and the B system air conditioning control device 40 are configured in the same manner as described in (1-2) above. However, the A system air conditioning control device 30 and the B system air conditioning control device 40 are the suppression levels indicated by the demand control device 20 based on the data related to the power of the target area Ar1 and the data related to the target demand given as total power from the demand control device 20. Demand control is performed. A method of controlling the A-system air conditioning control device 30 and the B-system air conditioning control device 40 to the suppression level indicated by the demand control device 20 will be described later.

  The demand control device 20 acquires the power by device of the A system, the B system, and the C system in real time from the power measurement device by device 130. Then, when it is predicted from the change in the total power value that the target demand of the target area Ar1 is exceeded, the demand control device 20 uses the power usage amount of the A system, the power usage amount of the B system, and The suppression level is determined according to the amount of power used by the C system.

  For example, when 5 minutes have elapsed, the total power consumption has reached 7 kWh and has exceeded the reference power amount of 5 kWh. Therefore, as shown in FIG. The suppression level of the system is set to 60%, and the suppression level of the system B is set to 70%. The demand control device 20 obtains the total power, the power used in the A system and the B system in real time from the device-specific power measuring device 130, predicts the total power consumption at the end of the demand time period, and controls the suppression level of the A system. And B system suppression level instructions are determined. As a result of being able to grasp and designate the necessary suppression level in demand control by grasping the power by system, the demand time limit is completed as compared with the case of (1-1) and (1-2) above. Until then, stable demand control can be performed, and control can be performed so that the target power amount is almost reached when the demand time period ends.

  In addition, when the power consumption of the A system and the power consumption of the B system occupying the total power consumption is compared with the power consumption of the B system, the power consumption of the B system is smaller as shown in FIG. It has become. Therefore, the demand control device 20 sets the suppression level of the B system to 70% according to the predetermined relationship between the power consumption of each system and the suppression level, and sets the suppression level of the A system from the suppression level of the B system. Is also determined to be 60%. The instruction determined by the demand control device 20 does not make the suppression level of the A system and the suppression level of the B system the same, but the suppression level of the A system is 60% and the suppression level of the B system is 70%. It is weighted so as to be smaller.

  As shown in FIG. 16, in the above-described example, the C system lighting control device 50 does not perform demand control, so the C system lighting device 51 continues to operate while consuming a certain amount of power. FIG. 17 shows the ratio of the used power amount for each system to the total used power amount in the demand time period when the demand control is performed. As described above, since the demand control device 20 indicates the suppression level necessary for demand control by grasping the power by system, the total power consumption at the end of the demand time limit is set as the target power amount. Can be almost the same. Moreover, it can suppress that demand control is biased to any system | strain because the demand control apparatus 20 weights and determines a suppression level.

(2) Demand control device 20
(2-1) Configuration of Demand Control Device 20 As shown in FIG. 18, the demand control device 20 includes an acquisition unit 21, an instruction determination unit 22, and a control instruction unit 23. The acquisition unit 21 acquires the power used by the A system (example of the first used power value), the power used by the B system (example of the second used power value), and the power used by the C system from the device-specific power measurement device 130. It has the power totalization part 21a for every system. The system power totalization unit 21a calculates the power consumption for each system by summing the power for each system. The device-specific power measurement device 130 uses the power waveform of the power value of the main power line 110 to determine the first used power value of the air conditioner belonging to the A system device group (example of the first device group) and the B system device group (first The second power consumption value of a predetermined device belonging to (example of two device group) is calculated separately. In the first embodiment, the air conditioners belonging to the A system device group are the air conditioning outdoor unit 31 and the plurality of air conditioning indoor units 32, and the predetermined devices belonging to the B system device group are the air conditioning outdoor unit 41 and the plurality of air conditioning units. This is an indoor unit 42. In the first embodiment, the power used by the A-system air conditioning control device 30 is not included in the first power usage value. Similarly, the power used by the B-system air conditioning control device 40 is not included in the second power usage value.

  The acquisition unit 21 may be connected to the main power meter 120. When the total power measurement accuracy of the main power meter 120 is better than the total power measurement accuracy of the individual power measurement device 130, data obtained from the individual power measurement device 130 using the total power of the main power meter 120 You may comprise the acquisition part 21 so that can be corrected.

  The acquisition unit 21 is configured to be able to acquire the power usage of the A system measured by the A system power measurement sensor 33 via the A system air conditioning control device 30. And the acquisition part 21 is comprised so that the used electric power measured by the sensor 33 for electric power measurement can be acquired as a 1st used electric power value. For example, when the power usage of the A system measured by the power measurement sensor 33 is more accurate than the power usage of the A system measured by the device-specific power measurement device 130, the acquisition unit 21 measures the power using the power measurement sensor 33. By acquiring the used power of the A system as the first used power value, it is possible to improve the accuracy of demand control. When the acquisition unit 21 acquires the power usage of the A system measured by the power measurement sensor 33 as the first power usage value, the system power totalization unit 21 a uses the A system measured by the power measurement sensor 33. The power consumption and the total power consumption of system A are calculated using the power.

  The acquisition unit 21 is configured to be able to acquire the indoor temperature of the space that is air-conditioned by the A system air conditioning indoor unit 32 by the indoor temperature sensor 34. The instruction determination unit 22 described later can also be configured to reflect the room temperature detected by the room temperature sensor 34 in the content of the instruction to be determined.

  The instruction determination unit 22 is provided with the total power value, the first used power value, and the second used power value from the acquisition unit 21, and the used power amount and the total used power for each system in the demand time limit from the per-system power totaling unit 21a. Given the amount. The instruction determination unit 22 uses the first instruction and the B system relating to the suppression of the power consumption of the A system air conditioner group (hereinafter also referred to as the first equipment group) based on the first power consumption value and the second power consumption value. 2nd instruction | indication regarding suppression of the electric power used of an air conditioner group (henceforth a 2nd apparatus group) is determined. In the example described in (1-3) above, the total use at the end of the demand time period (an example of the predetermined time period) is based on the total power value in addition to the first power consumption value and the second power consumption value. The instruction is determined by predicting the amount of electric power. For this purpose, a calculation such as prediction is performed by the control target calculation unit 22 a included in the instruction determination unit 22. At this time, an instruction to set the suppression level of system A to 60% is the first instruction, and an instruction to set the suppression level of system B to 70% is the second instruction. The instruction determination unit 22 also uses the first used power value and the second used power value for weighting between the control level of the A system and the control level of the B system when determining the first instruction and the second instruction. ing. For example, the instruction determination unit 22 includes a table indicating a weighting relationship among the first power usage value and the second power usage value, the control level of the A system, and the control level of the B system. Weighting is performed between the control level of the A system and the control level of the B system. The weighting relationship may be held in a form other than the table.

  In the example described in (1-3) above, after the suppression level is changed to 60% for the A system and 70% for the B system, the suppression level is maintained until the end of the demand time limit. However, the acquisition unit 21 acquires the total power value, the first used power value, and the second used power value in real time, and the instruction determination unit 22 acquires the total power value acquired in real time by the acquiring unit 21 and the first used value. The first instruction and the second instruction can be determined by predicting the total power consumption at the end of the demand period based on the power value and the second power consumption value. For example, let us consider a case where, after 15 minutes have elapsed, the air conditioning indoor units 32 belonging to the system A disposed in the conference room are turned off after the conference is finished. In that case, since the total power value and the first power usage value decrease, the instruction determination unit 22 changes the contents of the first instruction and the second instruction to increase the suppression level. In addition, since the ratio between the first used power value and the second used power value changes, the instruction determination unit 22 changes the weighting of the suppression level of the A system and the suppression level of the B system to change the suppression level of the A system. The ratio of increasing is set to be larger than the ratio of increasing the suppression level of the B system. The instruction determination unit 22 predicts the total power consumption at the end of the demand time period, for example, changes the suppression level of the A system from 60% to 70%, and the suppression level of the B system from 70% to 75%. And so on. For example, conversely, when several air conditioning indoor units 32 belonging to the system A arranged in the conference room are turned on, similarly, the total power value acquired in real time, the first used power value, and Based on the second power consumption value, the demand control device 20 can change the suppression level of the A system and / or the suppression level of the B system.

  The instruction determined by the instruction determination unit 22 is transmitted from the instruction determination unit 22 to the control instruction unit 23. The control instruction unit 23 transmits a second instruction to the A system instruction unit 23a (an example of the first instruction unit) for transmitting the first instruction to the A system air conditioning control device 30 and the B system air conditioning control device 40. B system instruction unit 23b (an example of a second instruction unit) and a C system instruction unit 23c for transmitting an instruction to the C system illumination control device 50. In the example described in the above (1-3), the C system illumination control device 50 is not allowed to perform demand control. However, the acquisition unit 21 acquires the power usage of the C system from the device-specific power measurement device 130 and instructs The determination unit 22 may be configured to determine an instruction for the C system illumination control device 50 and to cause the C system illumination control device 50 to send an instruction from the C system instruction unit 23c.

(2-2) Control of system A air conditioning control device 30 and system B air conditioning control device 40 by demand control device 20 (2-2-1) of system A air conditioning control device 30 and system B air conditioning control device by demand control device 20 When the target demand can be rewritten Before the demand control device 20 is added, for example, the main power meter 120 is connected to the system A air conditioning control device 30 and the system B air conditioning control device 40, and the demand time limit is 60 minutes. And the total power consumption for 60 minutes is set to 60 kWh. That is, the target average power that is the target demand of the target area Ar1 at this time is 60 kW. As described in (1-2) above, the A-system air conditioning control device 30 inputs the total power value measured by the main power meter 120 and independently performs demand control so that the target demand becomes 60 kW. The system B air conditioning control device 40 also inputs the total power value measured by the main power meter 120 and considers the case where the demand control is independently performed so that the target demand becomes 60 kW.

  When adding the demand control device 20, instead of the total power value measured by the main power meter 120, the first power usage value of the A system measured by the device-specific power measurement device 130 is used as the A system air conditioning control device 30. And the connection is changed so that the second power consumption value of the B system is supplied to the B system air conditioning controller 40. What is described here is an example in which the demand control function of the C-system lighting control device 50 is not used.

  Then, the first used power value of the A system and the second used power value of the B system in the total power value as shown in FIG. In the demand control device 20, the first power consumption value when the air conditioner outdoor unit 31 and the plurality of air conditioner indoor units 32 belonging to the first device group of the A system are fully operated is 57% of the total power value. It is recognized that the second used power value when the air-conditioning outdoor unit 41 and the plurality of air-conditioning indoor units 42 belonging to the second device group are fully operated is 29% of the total power value. That is, in the demand control device 20, the first used power value when the first device group of the A system is fully operated is nearly twice the second used power value when the second device group of the B system is fully operated. Recognize that it becomes a value. The demand control device 20 is not only the ratio of the first used power value and the second used power value in the total power value, but also the demand control sequence of the A system air conditioning control device 30 and the B system air conditioning control device 40. Weighting is performed considering differences. The difference in the sequence of demand control is, for example, that the A system air conditioning control device 30 reduces a relatively large amount of power consumption in the first half of the demand time period, whereas the B system air conditioning control apparatus 40 is in the second half of the demand time period. For example, a relatively large amount of power consumption is reduced. The demand control device 20 is based on data such as a table indicating the relationship between the first power consumption value and the second power consumption value during full operation of the A system and the B system stored in the system, during demand control. Determine the weight of.

  For example, the demand control device 20 sets the target demand of the A system air conditioning control device 30 and the B system air conditioning control device 40 according to the suppression level performed by the A system air conditioning control device 30 and the suppression level performed by the B system air conditioning control device 40. rewrite.

  For example, if the target power amount is 5 kWh when 5 minutes have elapsed and the total power consumption is 7 kWh, it is predicted that it will be 84 kWh at the end of the demand period, and the target demand cannot be achieved. The demand control device 20 determines. Therefore, the demand control device 20 requires that the suppression level of the total power consumption be about 67% in order to achieve the target demand, and considers the above-mentioned weighting, and the A system air conditioning control device The suppression level of 30 is determined to be 60%, and the suppression level of the B-system air conditioning control device 40 is determined to be 70%.

  In the demand control device 20, the power consumption of the first device group at the time when 5 minutes have elapsed, which is obtained from the first power consumption value of the first device group of the A system by the acquisition unit 21, is 4 kWh. Data indicating that the amount of power used by the second device group at the time of 5 minutes obtained from the second power consumption value of the two device group is 2 kWh is acquired. The instruction determination unit 22 of the demand control device 20 determines that the power consumption of the first device group is 48 kWh and the power consumption of the second device group is 48 kWh when the demand time period ends when the usage situation continues. Calculate to be 24 kWh. Therefore, the instruction determination unit 22 performs the first instruction to set the target demand of the A-system air conditioning control device 30 to 30.4 kW so that the suppression level becomes 60%, and the B-system air conditioning so that the suppression level becomes 70%. The second instruction for setting the target demand of the control device 40 to 17.4 kW is determined.

  The system A instruction unit 23a of the control instruction unit 23 of the demand control device 20 transmits a first instruction to rewrite the target demand of the system A air conditioning control device 30 to 30.4 kW, and sets the target demand of the system B air conditioning control device 40 to 17 Send a second instruction to rewrite to 4 kW.

(2-2-1) When the demand control device 20 cannot rewrite the target demand of the B-system air conditioning control device 40 When the demand control device 20 is added later to an existing system, the demand control device 20 is not necessarily controlled. The control device of each target system does not necessarily have a configuration in which the target demand can be rewritten. In order to describe the operation of the demand control device 20 in such a case, it is assumed here that the system B air conditioning control device 40 cannot be rewritten by the demand control device 20 according to the target demand.

  As in the case described in (2-2-1) above, the target demand of the target area Ar1 is 60 kW, and the target demand of the B-system air conditioning control device 40 is fixed to 60 kW and cannot be rewritten. It is assumed that the control of the system A air conditioning control device 30 by the demand control device 20 is the same as that described in (2-2-1) above. Therefore, when the target demand of the A-system air conditioning control device 30 is rewritten to 0.4 kW and the demand time limit ends, the A-system air-conditioning control device 30 suppresses the power consumption of the A-system to 30.4 kWh or less. .

  The demand control device 20 uses the acquisition unit 21 to acquire data indicating that the power consumption of the second device group is 2 kWh at the time when 5 minutes have elapsed, which is obtained from the second power consumption value of the second device group of the B system. ing. And the instruction | indication determination part 22 of the demand control apparatus 20 is calculating that the electric power consumption of a 2nd apparatus group will be 24 kWh when the use condition as it is continues. Therefore, the instruction determination unit 22 of the demand control device 20 reduces the power consumption of 6.6 kWh in the remaining 55 minutes, so that the total power consumption is 67.2 kWh when the demand time limit ends. A total power value (a power value to be controlled) that appears to be output is output to the B-system air conditioning control device 40. That is, the demand control device 20 outputs, for example, a value of 67.2 kW as the total power value at the time when 5 minutes have elapsed, to the B-system air conditioning control device 40. Thus, if the total electric power value exceeding a target demand is given to B system air-conditioning control apparatus 40, B system air-conditioning control apparatus 40 will perform demand control so that the excess part may be reduced during a demand time limit. For example, the suppression level is set to 70% with respect to the value of 67.2 kW of the total power value at the time when 5 minutes have elapsed, and the B system air conditioning control device 40 is set to 0 between 5 minutes and 10 minutes. Assume that the power consumption of system B is reduced by .6 kWh. Next, the demand control device 20 considers 0.6 kWh reduced from the time point after 5 minutes to the time point after 10 minutes, for example, the B system air conditioning control device 40 with a value of 66.6 kW as a total power value, for example. Output for. In other words, the demand control device 20 repeatedly gives a total power value to the B system air conditioning control device 40 as a total power value by adding a value commensurate with the power consumption to be reduced in the B system in demand control performed for the B system. . Since the demand control device 20 provides the B system air conditioning control device 40 with a value slightly larger than the target demand as the total power value, the B system air conditioning control device 40 performs demand control, so the demand control of the B system air conditioning control device 40 The feedback which increases / decreases the total power value given to the B system air conditioning control device 40 according to the power consumption reduced in step B is used, and the power consumption reduced by the demand control of the B system air conditioning control device 40 is reduced to the second device of the B system. Move closer to the amount of power used by the group. By performing such an operation by the demand control device 20, the B system air conditioning control device 40 can perform demand control without bias while maintaining harmony with the A system air conditioning control device 30. Note that, for example, the total power value to be given to the B-system air conditioning control device 40 in a trial operation is determined in advance so that the total power value is not increased or decreased by feedback.

Second Embodiment
(3) Schematic configuration of entire system In the electrical equipment system 10 according to the first embodiment, electrical equipment (outside the air conditioning room) managed by the A system air conditioning control device 30, the B system air conditioning control device 40, and the C system lighting control device. The case where the demand control is performed for the machines 31, 41, the air conditioner indoor units 32, 42, and the lighting device 51) has been described. However, electric equipment that is not managed by the control device may be supplied with power from the main power line 110 in some cases. In the second embodiment, an example in which the present invention is applied to an electric device system having an electric device that is not managed by a control device will be described. Therefore, in the electric equipment system 10A according to the second embodiment, the demand control target area Ar2 includes an air-conditioning outdoor unit 61, a plurality of air-conditioning indoor units 62, and a lighting device 63 that are air-conditioners not managed by the air-conditioning control device. It is. That is, the air conditioning outdoor unit 61, the plurality of air conditioning indoor units 62, and the lighting device 63 are also supplied with power from the main power line 110.

  In the electrical equipment system 10 </ b> A, the demand control device 20 is connected to the notification terminal 70. The notification terminal 70 is a terminal for notifying a work instruction for reducing power by screen display and / or e-mail or the like. The notification terminal 70 is a terminal for reducing the power of the electrical equipment that is not managed by the control device. In the second embodiment, the notification terminal 70 is for reducing the power of the air conditioning outdoor unit 61, the plurality of air conditioning indoor units 62, and the lighting device 63. Terminal. In the electrical equipment system 10A, the configuration other than the air conditioning outdoor unit 61, the plurality of air conditioning indoor units 62, and the notification terminal 70 is the same as that of the electrical equipment system 10 of the first embodiment.

(4) Control including the air conditioning outdoor unit 61, the plurality of air conditioning indoor units 62, and the lighting device 63 In order to control the air conditioning outdoor unit 61, the plurality of air conditioning indoor units 62, and the lighting device 63, the demand control device 20 However, it is necessary to determine whether or not the target demand can be achieved by controlling the A system air conditioning control device 30, the B system air conditioning control device 40, and the C system lighting control device 50. Therefore, as shown in FIG. 20, the demand control device 20 first calculates the difference between the power that can be demand controlled and the reduction amount (step S1). In the following description, the air-conditioning outdoor unit 61, the plurality of air-conditioning indoor units 62, and the lighting device 63 are referred to as devices belonging to the D system (abbreviated as D system) or non-managed device groups. Further, the demand control device 20 will be described below on the assumption that the demand control device 20 uses the C system lighting control device 50 in addition to the A system air conditioning control device 30 and the B system air conditioning control device 40 to perform demand control.

  The demand control device 20 calculates the total at the end of the demand period from the power usage value of the A system, the power usage value of the B system, the power usage value of the C system, and the power usage value of the D system acquired from the power measuring device 130 by device. Predict the amount of power used. Then, the demand control device 20 calculates the necessary reduction power amount obtained by subtracting the target power consumption amount from the predicted total power consumption amount. The maximum amount of reduction that the demand control device 20 can perform is the amount of power consumed in the A, B, and C systems from the consumed power consumed in the A, B, and C systems at the end of the demand time limit to the point of determination. Subtracted value. The demand control device 20 compares the maximum reduction amount with the required reduction power amount (step S2).

  The demand control device 20 performs demand control using the A system air conditioning control device 30, the B system air conditioning control device 40, and the C system lighting control device 50 when the maximum reduction amount is less than the required reduction power amount. If the maximum reduction amount exceeds the necessary reduction power amount, it is judged that the necessary reduction power amount can be achieved (in step S2). No).

  When determining that it is possible to achieve the required power reduction amount, the demand control device 20 acquires the room temperature detected by the room temperature sensor 34 (step S3). For example, the demand control device 20 also acquires the allowable range of the room temperature from the A-system air conditioning control device 30 at the same time, and determines whether or not the indoor temperature is within this allowable range (step S4).

  The demand control device 20 performs demand control using the A system air conditioning control device 30, the B system air conditioning control device 40, and the C system lighting control device 50 when not within the allowable range (Yes in step S4). However, if it is determined that the required amount of power reduction cannot be achieved (Yes in step S2), the power of the unmanaged device group is reduced (step S6). Specifically, using the notification terminal 70, for example, a work content instruction for an unmanaged device group for power reduction is notified. The worker stops the operation of the unmanaged device group or controls the capability according to the instruction from the notification terminal 70.

  When it is determined that it is within the allowable range (No in step S4), the demand control device 20 cancels the power reduction of the unmanaged device group (step S5). Specifically, using the notification terminal 70, for example, a work content instruction is notified to an unmanaged device group for canceling power reduction. The worker performs the operation of the unmanaged device group or cancels the capability control in accordance with the instruction from the notification terminal 70.

(5) Power Reduction Control of Unmanaged Device Group The power reduction control of the unmanaged device group will be described with reference to FIG. In the following description, an air conditioner included in the unmanaged device group is referred to as an unmanaged air conditioner, and an illumination device included in the unmanaged device group is referred to as an unmanaged lighting device. A device group managed by the A system air conditioning control device 30, the B system air conditioning control device 40, and the C system lighting control device 50 is referred to as a management device group, and the air conditioners belonging to the A system and the B system. The machine is called a management air conditioner, and the lighting device belonging to the C system is called a management lighting apparatus.

  First, the demand control apparatus 20 specifies the electric power used for the air conditioning use and the electric power used for the illumination use from the data acquired from the power measurement apparatus 130 classified by apparatus (step S11). The power for the specified air conditioning use is compared with the power for the management air conditioner (the first power consumption value and the second power consumption value) to determine whether or not there is an unmanaged air conditioner (step S12).

  When it is determined that the managed air conditioner cannot be suppressed (No in step S12), the instruction determining unit 22 of the demand control device 20 calculates the power suppression level of the unmanaged air conditioner from the power used by the unmanaged air conditioner. (Step S17). And the control instruction | indication part 23 of the demand control apparatus 20 produces the electric power reduction instruction | indication of the air-conditioning outdoor unit 61 which is a non-management air conditioner, and the some air conditioning indoor unit 62 according to a suppression level (step S18).

  When it is determined that the management air conditioner can suppress (Yes in step S12) and when a power reduction instruction for the unmanaged air conditioner is generated (step S18), the demand control device 20 uses the power for the air conditioning use and the lighting use. Then, a power suppression level for lighting use is calculated (step S13). It is determined from the power suppression level of the lighting application whether or not the power suppression level of the lighting application can be achieved with only the management lighting device (step S14).

  When it is determined that the power suppression level of the lighting application cannot be achieved only with the management lighting device (No in step S14), the demand control device 20 uses the instruction determination unit 22 according to the power suppression level of the lighting application. A power reduction instruction for the unmanaged lighting device is created (step S19).

  When it is determined that the power control level for lighting use can be achieved in the managed lighting device (Yes in step S14) and when a power reduction instruction for the unmanaged lighting device is created (step S19), the demand control device 20 The instruction determination unit 22 creates an instruction for the C-system lighting control device 50 according to the suppression level of the management lighting device. Then, in response to the instruction determined by the instruction determination unit 22, the C system instruction unit 23c transmits an instruction to the C system illumination control device 50 (step S15). Note that if the demand control can be performed only by the management air conditioner and it is not necessary to suppress the power for lighting use, the answer to step S14 is Yes.

  Further, the demand control device 20 transmits necessary notifications about the air conditioning outdoor unit 61, the plurality of air conditioning indoor units 62, and the lighting device 63, which are unmanaged air conditioners, to the notification terminal 70. In addition, although 2nd Embodiment demonstrated the case where there was only one illuminating device 63, there may be two or more illuminating devices 63 which are non-management lighting equipment. Moreover, what is contained in a non-management apparatus group is not restricted to an air conditioner and an illuminating device, Other electric equipment may be contained.

(6) Features (6-1)
As described in (1-2) above, conventionally, the system A air conditioning control device 30 (example of the first control device) and the system B air conditioning control device 40 (example of the second control device) only have the total power value. Therefore, the air conditioner outdoor unit 31 and the plurality of air conditioner indoor units 32 (example of the first device group) belonging to the A system, the air conditioner outdoor unit 41 belonging to the B system and the plurality of air conditioner outdoor units 31 belonging to the A system In the air conditioning indoor unit 42 (example of the second device group), excessive suppression of power consumption occurred, or suppression was biased to only one of the A system air conditioner and the B system air conditioner. On the other hand, when there is the demand control device 20, the instruction determination unit 22 uses the first power consumption value and the second power consumption value to control the air conditioners belonging to the A system (examples of air conditioners belonging to the first device group). Since it is possible to determine the first instruction regarding the suppression of power consumption and the second instruction regarding the suppression of power consumption of the air conditioners belonging to the B system (an example of a predetermined device belonging to the second device group), the first power consumption value and The first instruction and the second instruction that can be suppressed in a well-balanced manner using both of the second power consumption values can be determined. As a result, adjustment of demand control between the A system including the first device group and the B system including the second device group can be successfully performed.

(6-2)
Since the demand control device 20 acquires not only the total power value but also the first used power value of the A system and the second used power value of the B system by the acquiring unit 21 in real time, the instruction determining unit 22 The first instruction and the second instruction can be determined while taking into account the difference in fluctuation between the used power value and the second used power value. As a result, the function of the demand control device 20 that adjusts demand control between the A system including the first device group and the B system including the second device group is improved.

(6-3)
As described in (1-3) above, the demand control device 20 does not make the suppression level of the A system and the suppression level of the B system the same, but weights one to 60% and the other to the other. The power consumption can be suppressed by weighting the first device group of the A system and the second device group of the B system, which are 70%. Weighting for optimizing the effect and influence of suppression of power consumption for the first device group of the A system and the second device group of the B system can be performed. Moreover, since the demand control apparatus 20 can change weighting based on the table etc. which are memorize | stored, it weights according to the condition of the electric power used of the 1st apparatus group of A system, and the 2nd apparatus group of B system. Can be changed. As a result, the weighting of the suppression of the power used by the first device group of the A system and the second device group of the B system is optimized to suppress the power consumption of the A system and the power consumption of the B system. It is possible to adjust so as to reduce the bias between the two devices, and it is possible to reduce the adverse effect of the suppression of power consumption while increasing the effect of suppression of power consumption for the first device group and the second device group.

(6-4)
Since the demand control device 20 can change the weighting in the middle of the demand time period (an example of the predetermined time period), it corresponds to the state of suppression of the power consumption of the first device group of the A system and the second device group of the B system. To change the weight. For example, when the power usage of the A system decreases in the middle of the demand time period and the power usage of the B system increases in the middle of the demand time period, if the weighting of the A system is decreased and the weighting of the B system is increased, the weighting This makes it easier to achieve the target demand than when no change is made. As described above, the demand control device 20 can easily achieve the demand control target, and at the same time, can easily reduce the adverse effect due to the suppression of power consumption.

(6-5)
In the demand control device 20, the instruction determination unit 22 can change the contents of the first instruction and the second instruction when the indoor temperature environment deteriorates. For example, when the room temperature environment of the air conditioning target space of the A system is deteriorated by the A system indoor temperature sensor 34, the suppression level of the B system is reduced by setting the suppression level of the B system to a small value. Suppression of power consumption can be alleviated. Thus, since the instruction determination unit 22 can determine the first instruction and the second instruction in consideration of the detection result of the A system indoor temperature sensor 34, the deterioration of the temperature environment is mitigated by the first instruction and the second instruction. can do. As a result, it is possible to achieve the demand control target while suppressing deterioration of the indoor temperature environment.

(6-6)
The suppression level of the first device group of the A system can be reduced by the first instruction value sent from the A system instruction unit 23a (an example of the first instruction unit) of the demand control device 20 to the A system air conditioning control device 30. Moreover, the suppression level of the 2nd apparatus group of B system | strain can be reduced with the 2nd command value which B system | strain instruction | indication part 23b (example of a 2nd instruction | indication part) sends to the B system | strain air-conditioning control apparatus 40. As described in (2-2) above, the first instruction value and the second instruction value are controlled by the target demand and / or the demand control device 20 to the A system air conditioning control device 30 and the B system air conditioning control device 40. The target power value. The demand control device 20 can individually set the suppression levels of the first device group of the A system and the second device group of the B system, so that the first used power value and the second used power value are balanced. Can send instructions easily.

(6-7)
The acquisition unit 21 of the demand control device 20 acquires the first power consumption value from the device-specific power measurement device 130 (an example of a power measurement device) and from the A-system air conditioning control device 30 using a power measurement sensor. It is configured so that cases can be selected. Therefore, the acquisition unit 21 of the demand control device 20 can determine the first instruction and the second instruction by using the more accurate first power usage value, so that the A system including the first device group The accuracy of demand control can be improved.

(7) Modification (7-1) Modification A
Although the said 1st Embodiment and 2nd Embodiment demonstrated the case where the air-conditioning outdoor units 31 and 41 were each provided in each system | strain, two or more air-conditioning outdoor units may be provided in each system | strain. For example, a plurality of air conditioning outdoor units may be provided in the A system, and the plurality of refrigerant systems may be controlled by one A system air conditioning control device. Similarly, the B system can also be configured using a plurality of air conditioning outdoor units and a plurality of refrigerant systems. The D system can also be configured by a plurality of air conditioner outdoor units.

(7-2) Modification B
In the said 1st Embodiment and 2nd Embodiment, although the electric power used of the air-conditioning indoor units 32 and 42 is included in the 1st electric power usage value of A system, and the 2nd electric power usage value of B system, Since the air conditioner outdoor unit uses a larger amount of power for the air conditioner indoor unit, the power used by the air conditioner indoor units 32 and 42 is included in the first power consumption value of the A system and the second power consumption value of the B system. You may make it perform demand control without it.

(7-3) Modification C
In the said 1st Embodiment and 2nd Embodiment, the air-conditioning outdoor unit 41 and several air-conditioning indoor unit 42 which belong to B system are demonstrated as a predetermined apparatus of a 2nd apparatus group, and B system air-conditioning control apparatus 40 is 2nd control apparatus. As explained. However, the second device group and the second control device are not limited to the above example, and other device groups and other control devices may be used as the second device group and the second control device. For example, a plurality of C system lighting devices 51 may be the predetermined devices of the second device group, and the C system lighting control device 50 may be the second control device. Further, the air conditioning outdoor unit 41 and the plurality of air conditioning indoor units 42 belonging to the B system and the plurality of C system lighting devices 51 are combined into a predetermined device of the second device group, and the B system air conditioning control device 40 and the C system lighting control are combined. The device 50 may be combined to form a second control device.

(7-4) Modification D
If the power waveforms of the air conditioning indoor units 32, 42, 62 are not characteristic, and therefore it is difficult to separately measure the power used by the air conditioning indoor unit 32, the air conditioning indoor unit 42, and the air conditioning indoor unit 62, the air conditioning indoor unit 32. Alternatively, different types of harmonics may be added to the power waveforms of the air conditioning indoor unit 42 and the air conditioning indoor unit 62 to perform power measurement for each device. The addition of harmonics can be performed using a technique described in, for example, Japanese Patent Application Laid-Open No. 2004-38765.

DESCRIPTION OF SYMBOLS 10,10A Electrical equipment system 20 Demand control apparatus 21 Acquisition part 22 Instruction determination part 23 Control instruction | indication part 23a A system | strain instruction | indication part (example of 1st instruction | indication part)
23b B system instruction section (example of second instruction section)
23c C system instruction unit (example of second instruction unit)
30 A system air conditioning control device (example of first control device)
31 Air conditioner outdoor unit (example of air conditioner of the first equipment group)
32 Air conditioner indoor unit (example of air conditioner of the first equipment group)
33 Electric power measurement sensor 34 Indoor temperature sensor 40 B system air conditioning control device (example of second control device)
41 Air-conditioning outdoor unit (example of predetermined equipment in the second equipment group)
42 Air-conditioning indoor unit (example of specified equipment in the second equipment group)
50C system lighting control device (example of second control device)

JP 2007-212038 A JP 2002-147819 A

Claims (7)

In such a way that the total power consumption of all target devices including the first device group consisting of the air conditioners (31, 32) and the second device group consisting of the predetermined devices (41, 42, 51) in the predetermined time limit falls within the upper limit value. A demand control device (20) that performs demand control by sending instructions to a first control device (30) that controls the first device group and a second control device (40, 50) that controls the second device group; There,
A first used power value that is a used power value of an air conditioner belonging to the first device group and a second used power value that is a used power value of a predetermined device belonging to the second device group are separately determined from the power waveform of the total power value. An acquisition unit (21) for acquiring the first power consumption value and the second power consumption value from the power measurement device to calculate
Based on the first power consumption value and the second power consumption value, instruction determination for determining a first instruction regarding suppression of power consumption of the first device group and a second instruction regarding suppression of power consumption of the second device group Part (22);
A first instruction section (23a) for sending the first instruction to the first control device;
A second instruction section (23b, 23c) for sending the second instruction to the second control device;
A demand control device comprising: The acquisition unit acquires the total power value, the first used power value, and the second used power value in real time,
The instruction determination unit predicts the total power consumption at the end of the predetermined time period based on the total power value acquired in real time by the acquisition unit, the first power usage value, and the second power usage value. Determining the first instruction and the second instruction;
The demand control apparatus according to claim 1. The instruction determination unit is configured to weight the first device group and the second device group to suppress power consumption and change the weight.
The demand control apparatus according to claim 1 or 2. The instruction determination unit is configured to be able to change a weight of suppression of power consumption for the first device group and the second device group in the middle of the predetermined time period.
The demand control apparatus according to claim 3. The acquisition unit is configured to be able to acquire a room temperature of a space that is air-conditioned by the first device group including an air conditioner,
The instruction determination unit determines that the room temperature environment has deteriorated from the room temperature when determining the first instruction and the second instruction based on the first power consumption value and the second power consumption value. The first instruction and the second instruction are configured to be changeable depending on whether or not
The demand control apparatus according to any one of claims 1 to 4. The first control device and the second control device are configured to be able to perform demand control by instructing an instruction value related to a suppression level,
The first instruction unit sends, as the first instruction, the first instruction value that lowers the suppression level of the first device group to the first control device with respect to the suppression level when the demand control is not performed,
The second instruction unit sends, as the second instruction, the second instruction value that lowers the suppression level of the second device group to the second control device with respect to the suppression level when the demand control is not performed.
The demand control apparatus according to any one of claims 1 to 5. The first device group includes a power measurement sensor (33) for measuring power of an air conditioner,
The first control device is configured to be able to acquire the first power consumption value from data from the power measurement sensor,
The acquisition unit is configured to be able to select and acquire the first used power value given from the power measurement sensor and the first used power value given from the first control device. Yes,
The demand control apparatus according to any one of claims 1 to 6.

Images