JP2007195392A - Demand supervisory equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide demand supervisory equipment which adequately judges the possibility that the power consumption of a target device exceeds the target power consumption, and controls the power consumption of the target device to be smaller than a predetermined value. <P>SOLUTION: This demand supervisory equipment 20 comprises a power consumption measuring module 22 for measuring the power consumption of a target device 10, a control level judgment module 23 for determining power consumption control place to take place on the target device 10 based on a power consumption level measured within a demand time limit, a control pattern decision module 24, and a device operation control module 26 for controlling the operation of the target device 10 based on the determined power consumption control. To determine power consumption control, both the control level judgment module 23 and the control pattern determination module 24 use a target power consumption in a demand time limit as a first threshold and an upper limit power consumption in the time limit as a second threshold. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a demand monitoring control device, and more specifically, for example, in a facility such as a store, a building, or a factory, by controlling the operation of a plurality of target devices connected to a common power supply line, these target devices The present invention relates to a demand monitoring control apparatus that suppresses the amount of power consumption within a predetermined upper limit value.

  Conventionally, for example, in facilities such as stores, buildings, and factories, by controlling the operation of a plurality of target devices connected to a common power supply line, the power consumption of these target devices is suppressed within a predetermined upper limit value. A demand monitoring control apparatus is known.

  Such a demand monitoring control device measures the power consumption of the target device from the start time every demand time period (usually about 30 minutes) as a unit time, and the target device at the end of the demand time period at each measurement time point. The operation of these target devices is controlled by determining the possibility that the power consumption exceeds the preset target power consumption (target power consumption at the end of the demand period).

  At each measurement time point, the possibility of the power consumption of the target device exceeding the target power consumption at the end of the demand time limit is determined from the power consumption at the time of measurement from the power consumption rate at that time (gradient) Assuming that the power consumption at the end of the demand period is predicted, it is determined whether the predicted power consumption (hereinafter also referred to as the predicted power consumption) exceeds the target power consumption. (See, for example, Patent Document 1 and Patent Document 2).

JP 2000-50500 A JP 2002-247757 A

  However, in the demand monitoring control device as described above, the power consumption at the end of the demand time period is predicted from the power consumption at the time of measurement, assuming that the rate of increase in power consumption at that time is continuing. As a result, it is judged whether or not the predicted power consumption exceeds the target power consumption. Therefore, the rate of increase in power consumption changes greatly due to variations in measured values and temporary sudden changes in power consumption. As a result, the predicted power consumption at the end of the demand time period changes greatly, and the excess amount and margin amount with respect to the target power consumption also change greatly. There is a possibility that the possibility that the amount exceeds the target power consumption cannot be appropriately determined.

  In the initial stage of the demand time period (stage where there is a lot of remaining time until the end of the demand time period) even if the change in the increase rate of power consumption due to variations in measured values or temporary sudden changes in power consumption is small As in the case described above, the predicted power consumption amount at the end of the demand time period changes greatly, and the excess amount and the margin amount with respect to the target power consumption amount change greatly. There is a possibility that it is not possible to appropriately determine the possibility that the power consumption amount exceeds the target power consumption amount.

  Thus, unless the possibility that the power consumption at the end of the demand time limit exceeds the target power consumption cannot be determined appropriately, the power consumption of the target device cannot be suppressed within a predetermined upper limit value.

  In view of the above circumstances, the present invention appropriately determines the possibility that the power consumption of the target device at the end of the demand time limit will exceed the target power consumption, and sets the power consumption of the target device to a predetermined upper limit value. It is an object of the present invention to provide a demand monitoring control device that can be suppressed within a range.

  In order to achieve the above object, a demand monitoring control apparatus according to claim 1 of the present invention includes a power consumption measuring means for measuring the power consumption of a target device, and a demand time period that is a predetermined unit time. A processing content determining means for determining the processing content of the power consumption control of the target device based on the power consumption measured by the power consumption measuring means, and a target based on the processing content determined by the processing content determining means. An operation control means for controlling the operation of the equipment, and in the demand monitoring control device that suppresses the power consumption of the target equipment within a predetermined upper limit within the demand time limit, the processing content determination means is configured to start a demand time limit. Power consumption at each time point, which is calculated as an average increase in power consumption with a value of zero at the time point toward the value at the end of the preset demand time period A value obtained by multiplying the value of the target power consumption at the end of the demand time limit by the first threshold value having the power amount as the target power consumption and the preset upper limit power consumption determination ratio is set as the value at the start of the demand time limit. The power consumption amount at each time point determined as an average increase toward the value of the target power consumption amount at an arbitrary time point in the demand time period, and the target power consumption amount at any time point in the demand time period are: Determining the processing content using the second threshold value with the power consumption amount at each time point determined to increase on the average toward the value of the target power consumption amount at the end of the demand time limit. Features.

  The demand monitoring control apparatus according to claim 2 of the present invention is the demand monitoring control device according to claim 1, wherein the operation control means is based on target device control information in which a control priority order and control contents of the target device are stored in advance. It controls the operation of the target device.

  The demand monitoring control device according to claim 3 of the present invention is the demand monitoring control device according to claim 1 described above, wherein the operation control means has the control priority of the target device, the control content, the control execution availability condition, and the expected effect by the control execution. The operation of the target device is controlled based on the target device control information stored in advance.

  According to a fourth aspect of the present invention, the demand monitoring control apparatus according to the third aspect described above is the control content stored in advance in the target device control information from the power consumption measured by the power consumption measuring means. The actual effect calculation means for calculating the actual effect and outputting the actual effect as the actual effect is provided.

  According to the demand monitoring control apparatus of the present invention, the processing content determination means increases the power consumption amount with the value at the time of start of the demand time period being zero toward the preset value at the time of end of the demand time period. Obtained by multiplying the value of the target power consumption amount at the end of the demand time period by a predetermined upper limit power consumption determination ratio, and setting the target power consumption amount as the target power consumption amount at each time point required to be Power consumption at each point of time when the power consumption amount having a value at the start of the demand time period as an average increases toward the target power consumption value at an arbitrary time point of the demand time period, and the demand time period Each time point that the target power consumption at an arbitrary point in time increases as an average increases toward the target power consumption value at the end of the demand period Since the processing content is determined using the second threshold value with the power consumption amount as the upper limit power consumption amount, the target device at the end of the demand time period even if there are variations in measured values or temporary sudden changes in the power consumption amount, etc. It is possible to appropriately determine the possibility that the power consumption amount exceeds the target power consumption amount, and to reduce the power consumption amount of the target device within a predetermined upper limit value.

  Further, according to the demand monitoring control apparatus of the present invention, the actual effect calculating means obtains the actual effect according to the control content stored in advance in the target device control information from the power consumption measured by the power consumption measuring means. Since it is calculated and output as a result effect, the difference from the expected effect stored in advance can be confirmed, and if the difference is large, the accuracy of the control can be quickly improved by changing the setting There is an effect. Furthermore, for example, a trade-off relationship with a store showcase (refrigerator), such as control of changing the air-conditioning set temperature (lowering the air-conditioner set temperature during cooling increases the power consumption of the air-conditioner, As the room temperature decreases, the amount of air leaks decreases and the power consumption of the showcase decreases, while conversely, increasing the air conditioner set temperature decreases the power consumption of the air conditioner. The amount of air leaked increases as the room temperature rises, and the power consumption of the showcase increases.The direction and amount of increase / decrease in overall power consumption varies depending on the installation status of the equipment). It can be used as a guideline for setting the expected effect when the values are different.

  Exemplary embodiments of a demand monitoring control apparatus according to the present invention will be described below in detail with reference to the accompanying drawings.

<Embodiment 1>
FIG. 1 is a block diagram schematically showing the configuration of the demand monitoring control apparatus according to Embodiment 1 of the present invention. The demand monitoring control device 20 in FIG. 1 controls the operation of a plurality of target devices 10 connected to a common power supply line in a facility such as a store, a building, or a factory. Here, in the first embodiment, a lighting device, a ventilation fan, and an air conditioning device will be described as the target device 10.

  Such a demand monitoring control device 20 includes a main control unit 21, a power consumption measurement unit 22, a control level determination unit 23, a control pattern determination unit 24, a device operation control unit 26, and a storage area 30. . The main control unit 21 performs overall control of the operation of the demand monitoring control device 20 based on data and programs stored in the main memory 31 of the storage area 30.

  The power consumption measuring unit 22 measures the power consumption of the target device 10 every set time (for example, every minute). The power consumption measured by the power consumption measuring unit 22 is appropriately stored in the power consumption storage unit 32 of the storage area 30.

  The control level determination unit 23 monitors the power consumption amount stored in the power consumption amount storage unit 32 in a demand time period (for example, 30 minutes) which is a preset unit time, and the power consumption amount and the storage area The control level is determined by comparing the determination criterion stored in the 30 criterion storage unit 33 with a predetermined time interval. The control level determination unit 23 will be described in detail as follows.

  The criterion storage unit 33 stores the target power consumption and the upper limit power consumption determination ratio. The target power consumption amount and the upper limit power consumption amount determination ratio are respectively input by a user of the demand monitoring control device 20 through a setting input unit (not shown) of a touch panel display or the like (for example, CRT). The control level determination unit 23 sets the target power consumption amount in the demand time period as the first threshold value, and further sets the upper limit power consumption amount in the demand time period as the second threshold value, and monitors each of the first threshold value and the second threshold value. The control level is determined by comparing the quantity. An image of such control level determination will be described with reference to FIGS. Here, the target power consumption amount is determined at each time point when the power consumption amount having a value of zero at the demand time point start point is increased on average toward the preset value at the time point of the demand time point end. Power consumption. Further, the upper limit power consumption is a power consumption amount obtained by multiplying the target power consumption value at the end of the demand time period by a preset upper limit power consumption determination ratio as a value at the start of the demand time limit. , The power consumption at each time point determined as an average increase toward the target power consumption value at any time point in the demand time period, and the target power consumption value at any time point in the demand time period are The amount of power consumption at each time point determined as an average increase toward the target power consumption value. In other words, the upper limit power consumption is obtained by multiplying the target power consumption value at the end of the demand time period by a preset upper limit power consumption determination ratio as a value at the start of the demand time limit, and this value, It is determined by a line connecting each point of the target power consumption value at an arbitrary time point in the demand time period and the target power consumption value at the end time of the demand time period.

  FIG. 2 is a chart in which the horizontal axis represents time (minutes), the vertical axis represents electric energy (kWh), and the starting point of the demand time period is the origin. The straight line (A) in FIG. 2 indicates the target power consumption that is the first threshold. Here, the target power consumption at the start of demand is shown as an initial value 0 (kWh). A broken line (B) indicates the upper limit power consumption that is the second threshold. This broken line (b) is a value (25 kWh in FIG. 2) obtained by multiplying the actual target power consumption (for example, 250 kWh) in the demand time period by the upper limit power consumption determination ratio (for example, 10%), and an arbitrary time point in the demand time period The values of the target power consumption at the end of the demand time limit (at the end of 30 minutes) and the points of the target power consumption at the end of the demand period (for example, when 25 minutes have elapsed) are connected. A broken line (C) indicates the actual value of the power consumption to be monitored.

  As shown in FIG. 3, the control level determination unit 23 determines that the control level is L <b> 1 when the power consumption is continuously lower than the target power consumption by a specified number of times (for example, twice or more). When the amount of power is equal to or greater than the target power consumption and continuously falls below the upper limit power consumption for a specified number of times (for example, twice or more) (for example, (a) in FIG. 2), the control level is When it is determined as L2 and the power consumption exceeds the upper limit power consumption continuously for a specified number of times (for example, twice or more) (for example, (b) and (c) in FIG. 2), the control level is L3. Judgment. In this embodiment, each designated number of times is described as two.

  The control pattern determination unit 24 includes a control level determined by the control level determination unit 23, a state of the target device 10 or the like monitored through the monitoring unit 25 described later, and a control pattern storage unit in the storage area 30 as shown in FIG. The control pattern is determined using the data stored in 34. The monitoring unit 25 monitors the state of notification means such as the target device 10, the warning output unit 27, the warning output unit 28, and the emergency warning output unit 29. Such control patterns determined by the control pattern determination unit 24 include warning warning / release, warning warning / release, emergency warning, demand control, and restoration control. The warning issuance is to issue a warning about excess target power consumption through the warning output unit 27 (the power consumption at the end of the demand period may exceed the target power consumption). This is to stop issuing the target power amount excess warning through the report output unit 27. The warning is issued through the warning output unit 28. The target power consumption excess warning (the power consumption at the end of the demand time period may exceed the target power consumption. Therefore, it is necessary to control the target device 10 that reduces the power consumption. ) Is issued, and the release is to stop issuing the target power amount excess warning through the warning output unit 28. The emergency warning is issued through the emergency warning output unit 29 for a target power consumption excess emergency warning (the power consumption at the end of the demand period is likely to exceed the target power consumption, but there is no controllable target device 10). It is to announce. Demand control refers to controlling the operation of a device so that the power consumption of the target device exceeds the target power amount, and that power consumption falls below the target power amount by the end of the demand time limit. If there is a device under demand control and the power consumption of the target device is less than the target power consumption, the demand control is performed so that the power consumption does not exceed the target power consumption by the end of the demand time limit. Control to return the equipment inside.

  The device operation control unit 26 operates the target device 10 based on the data stored in the operation control information storage unit 35 of the storage area 30 when demand control or restoration control is determined by the control pattern determination unit 24. Is to control. Here, the data in the operation control information storage unit 35 is input by a user of the demand monitoring control device 20 through a setting input unit (not shown) such as a touch panel type display (for example, CRT). The rank, the control target device, the operation content, the change execution condition, the expected effect, and the like are stored in a table format. Here, the expected effect is the power consumption (kWh) that can be reduced per hour.

  In addition, when the demand control is determined by the control pattern determination unit 24, the device operation control unit 26 determines whether the following conditional expression (1) stored in the operation control information storage unit 35 is satisfied. When it is established, demand control is performed, and when it is not established, demand control is not performed. Here, when performing demand control, in the data stored in the operation control information storage unit 35, operation control is performed by selecting from the target devices 10 having a higher priority.

Conditional expression (1) OP / (30−t) −ΣEc / 60 ≧ 0
Here, OP is the excess power consumption at the current monitoring control time ("power consumption-target power consumption" (kWh)), and t is the current monitoring control time (the demand time limit start time is 0 minutes) ΣEc is the expected effect total value (kWh) of the target device 10 currently under demand control.

  Furthermore, when the restoration control is determined by the control pattern determination unit 24, the device operation control unit 26 determines whether or not the following conditional expression (2) stored in the operation control information storage unit 35 is satisfied. When it is established, the restoration control is performed, and when it is not established, the restoration control is not performed. Here, when performing restoration control, in the data stored in the operation control information storage unit 35, operation control is performed by selecting from the target devices 10 having a lower priority.

Conditional expression (2) RP / (30−t) × r ≧ EcL
Here, RP is “− (power consumption−target power consumption)” (kWh) at the current monitoring control time (RP = −OP), and t is the current monitoring control time (the demand time limit start time point). EcL is the expected effect value (kWh) of the target device 10 that is currently in demand control and has the lowest priority, and r is a recoverable power amount ratio (%). It is.

  The demand monitoring control apparatus 20 having the above configuration controls the operation of the target device 10 as follows.

  The main control unit 21 of the demand monitoring control device 20 measures the power consumption of the target device 10 every set time (for example, every minute) through the power consumption measurement unit 22 and stores the measured power consumption. Stored in the unit 32.

  When the demand time limit is reached, the main control unit 21 sets the target power consumption stored in the determination reference storage unit 33 through the control level determination unit 23, that is, the demand start time as the initial value 0 within the demand time limit. The power consumption amount at each time point determined to increase on average is set as the first threshold value, and the upper limit power consumption amount determination ratio stored in the determination reference storage unit 33 and the target power consumption amount at the determined time point are determined. The power consumption stored in the power consumption storage unit 32 is monitored using the upper limit power consumption as a second threshold.

  The main control unit 21 determines that the control level is L1 through the control level determination unit 23 when the power consumption is continuously lower than the first threshold value (target power consumption) twice or more, and the power consumption If the amount is equal to or greater than the first threshold (target power consumption) and continuously falls below the second threshold (maximum power consumption) twice or more, it is determined that the control level is L2, and the power consumption When the amount exceeds the second threshold value (upper limit power consumption amount) twice or more continuously, it is determined that the control level is L3.

  When the control level determination unit 23 determines the control level (L1 to L3), the main control unit 21 performs control based on the data stored in the control pattern storage unit 34 through the control pattern determination unit 24 and the monitoring unit 25. Determine the pattern. Specifically, when the control level is L1 and only the warning is being issued, it is determined as “warning release”, and when the control level is L1 and only the alarm is being issued, “alarm release” is set. decide. If the target device 10 under demand control exists at the control level L1, “restore control” is determined. Further, when the control level is L2 and no warning and warning are issued, it is determined as “caution warning issued”. Further, if there is a target device 10 that can be demand-controlled at the control level L3 and no alarm is issued, it is determined as “alarm issue”, and there is a target device 10 that can be demand-controlled at the control level L3. In this case, “demand control” is determined. Then, when there is no target device 10 that can be demand-controlled at the control level L3, it is determined as “emergency warning”.

  When it is determined that a warning is issued through the control pattern determining unit 24, the main control unit 21 issues a warning through the warning output unit 27, and when it is determined as an alarm through the control pattern determining unit 24, When the control unit 21 issues an alarm through the alarm output unit 28 and determines that an emergency alarm is issued through the control pattern determination unit 24, the control unit 21 issues an emergency alarm through the emergency alarm output unit 29. When it is determined that the warning information is canceled or the alarm is canceled through the control pattern determination unit 24, the main control unit 21 issues a warning through the warning output unit 27 or issues a warning through the warning output unit 28. To stop.

  On the other hand, when the demand control is determined through the control pattern determination unit 24, the main control unit 21 determines whether or not the conditional expression (1) is satisfied through the device operation control unit 26. Controls the operation of the target device 10 by selecting from the target devices 10 having a higher priority order based on the data stored in the operation control information storage unit 35. Thereby, the power consumption of the target apparatus 10 can be reduced.

  Further, when the conditional expression (1) is not satisfied, the power consumption amount of the target device 10 at the end of the demand time period is lower than the target power consumption amount only with the target device 10 currently under demand control. As a result, the power consumption of the target device 10 can be reduced.

  When the restoration control is determined through the control pattern determination unit 24, the main control unit 21 determines whether or not the conditional expression (2) is satisfied through the device operation control unit 26. Based on the data stored in the operation control information storage unit 35, the target device 10 having a lower priority is selected and the operation of the target device 10 is controlled. Thereby, when there is a device under demand control, the device under demand control can be returned to the original range within a range where the power consumption of the target device 10 at the end of the demand time limit does not exceed the target power consumption.

  In addition, when the conditional expression (2) is not satisfied, if the device that is the restoration candidate is restored, the power consumption of the target device 10 at the end of the demand time limit will exceed the target power consumption. Restoration control is not performed.

  When summarizing the demand monitoring control apparatus 20 in the first embodiment, the power consumption measuring unit 22 constitutes a power consumption measuring unit, and the control level determining unit 23, the control pattern determining unit 24, and the monitoring unit 25 determine processing contents. The device operation control unit 26 constitutes the operation control means.

  And according to the demand monitoring control apparatus 20 in Embodiment 1 of this invention, the target power consumption in a demand time limit, ie, the power consumption amount which makes the value at the time of a demand time limit zero, through the control level determination part 23, The power consumption amount at each time point determined to increase on average toward a preset value at the end point of the demand time period is set as a first threshold, and the upper limit power consumption amount in the demand time period, that is, at the end point of the demand time period The power consumption, which is obtained by multiplying the target power consumption value by the preset upper limit power consumption determination ratio, is the value at the start of the demand time period. Power consumption at each point of time required to increase on average, as well as at any point in time for demand The power consumption amount at each time point determined as the target power consumption amount increasing on average toward the value of the target power consumption amount at the end of the demand time period is set as the second threshold value, and the first threshold value and the second threshold value are set. The control level is determined by comparing each and the power consumption amount, and the control pattern is determined based on the data stored in the control pattern storage unit 34 through the control pattern determination unit 24 and the monitoring unit 25. Even if there is a variation in power consumption or a temporary sudden change in power consumption, the possibility that the power consumption of the target device 10 at the end of the demand time limit will exceed the target power consumption is appropriately determined. The power consumption can be suppressed within a predetermined upper limit value.

  Further, according to the demand monitoring control apparatus 20, since the operation of the target device 10 is controlled through the device operation control unit 26 based on the data stored in the operation control information storage unit 35, particularly demand control or restoration is performed. Since the determination of the execution of the control is performed using the conditional expression (1) or the conditional expression (2), the power consumption status of the target device 10 is monitored to control the operation of the plurality of target devices 10 in the target facility. It can be done efficiently without waste.

<Embodiment 2>
FIG. 6 is a block diagram schematically showing the configuration of the demand monitoring control apparatus according to Embodiment 2 of the present invention. In addition, the same code | symbol is attached | subjected to what has the same structure as the demand monitoring control apparatus in Embodiment 1 of this invention mentioned above, and the overlapping description is abbreviate | omitted.

  The demand monitoring control apparatus 201 in FIG. 6 controls the operation of a plurality of target devices 10 connected to a common power supply line in a facility such as a store, a building, or a factory. Here, in the second embodiment, a lighting device, a ventilation fan, and an air conditioning device will be described as the target device 10.

  Such a demand monitoring control apparatus 201 includes a main control unit 21, a power consumption measurement unit 22, a control level determination unit 23, a control pattern determination unit 24, a device operation control unit 26, a storage area 30, and a performance effect calculation unit 41. It is prepared.

  The power consumption measuring unit 22 measures the power consumption of the target device 10 every set time (for example, every minute) as in the first embodiment described above. The measured power consumption is appropriately stored in the power consumption storage unit 321 of the storage area 30. In this power consumption storage unit 321, a database is keyed so that the power consumption can be searched and calculated by a combination of the device state, the outside air temperature zone, the outside air humidity zone, the time zone, and the like.

  As in the first embodiment, the device operation control unit 26 stores the demand control or restoration control in the operation control information storage unit 351 in the storage area 30 when the control pattern determination unit 24 determines the demand control or the restoration control. The operation of the target device 10 is controlled based on certain data. Here, the data in the operation control information storage unit 351 is input by a user of the demand monitoring control device 201 through a setting input unit (not shown) such as a touch panel display (for example, CRT). The rank, control target device, control target device, control content, control execution availability condition, expected effect by control execution, and the like are stored in a table format. The data stored in the operation control information storage unit 351 is output on the screen of the setting input unit so that it can be viewed. Here, the expected effect is the power consumption (kWh) that can be reduced per hour that can be expected when the control is performed.

  The operation control information storage unit 351 stores the above formula (1) and the above formula (2), and the equipment operation control unit 26 establishes the conditional expression as in the first embodiment. Is determined, and operation control is performed based on the data stored in the operation control information storage unit 351.

  The performance effect calculation unit 41 stores the power consumption amount measured by the power consumption amount measurement unit 22 and stored in the operation control information storage unit 351 of the storage area 30 from the power consumption amount stored appropriately in the power consumption amount storage part 321 of the storage area 30. The actual effect for each control content is calculated as the actual effect. The actual effect is calculated in the actual effect calculation period stored in advance in the operation control information storage unit 351, except for the device state that is converted before and after the change of each control content, the same device state, outside temperature zone, outside air This is done by subtracting the average power consumption between the groups of power consumption data in the humidity zone and time zone from before the change of each control content and averaging them.

  The actual effect data calculated by the actual effect calculation unit is output on the screen of the setting input unit together with the data stored in the operation control information storage unit 351 as shown in FIG. It has become.

  The demand monitoring control apparatus 201 having the above configuration controls the operation of the target device 10 as follows.

  The main control unit 21 of the demand monitoring control apparatus 201 measures the power consumption of the target device 10 for every set time (for example, every minute) through the power consumption measurement unit 22 and stores the measured power consumption. Stored in the unit 321. At this time, the power consumption storage unit 321 is keyed so that the power consumption can be searched and calculated by a combination of the device state, the outside air temperature zone, the outside air humidity zone, the time zone, and the like.

  When the demand time limit is reached, the main control unit 21 sets the target power consumption stored in the determination reference storage unit 33 through the control level determination unit 23, that is, the demand start time as the initial value 0 within the demand time limit. The power consumption amount at each time point determined to increase on average is set as the first threshold value, and the upper limit power consumption amount determination ratio stored in the determination reference storage unit 33 and the target power consumption amount at the determined time point are determined. The power consumption stored in the power consumption storage unit 321 is monitored using the upper limit power consumption calculated as a second threshold.

  The main control unit 21 determines that the control level is L1 through the control level determination unit 23 when the power consumption is continuously lower than the first threshold value (target power consumption) twice or more, and the power consumption If the amount is equal to or greater than the first threshold (target power consumption) and continuously falls below the second threshold (maximum power consumption) twice or more, it is determined that the control level is L2, and the power consumption When the amount exceeds the second threshold value (upper limit power consumption amount) twice or more continuously, it is determined that the control level is L3.

  When the control level determination unit 23 determines the control level (L1 to L3), the main control unit 21 performs control based on the data stored in the control pattern storage unit 34 through the control pattern determination unit 24 and the monitoring unit 25. Determine the pattern. Specifically, when the control level is L1 and only the warning is being issued, it is determined as “warning release”, and when the control level is L1 and only the alarm is being issued, “alarm release” is set. decide. If the target device 10 under demand control exists at the control level L1, “restore control” is determined. Further, when the control level is L2 and no warning and warning are issued, it is determined as “caution warning issued”. Further, if there is a target device 10 that can be demand-controlled at the control level L3 and no alarm is issued, it is determined as “alarm issue”, and there is a target device 10 that can be demand-controlled at the control level L3. In this case, “demand control” is determined. Then, when there is no target device 10 that can be demand-controlled at the control level L3, it is determined as “emergency warning”.

  When it is determined that a warning is issued through the control pattern determining unit 24, the main control unit 21 issues a warning through the warning output unit 27, and when it is determined as an alarm through the control pattern determining unit 24, When the control unit 21 issues an alarm through the alarm output unit 28 and determines that an emergency alarm is issued through the control pattern determination unit 24, the control unit 21 issues an emergency alarm through the emergency alarm output unit 29. When it is determined that the warning information is canceled or the alarm is canceled through the control pattern determination unit 24, the main control unit 21 issues a warning through the warning output unit 27 or issues a warning through the warning output unit 28. To stop.

  On the other hand, when the demand control is determined through the control pattern determination unit 24, the main control unit 21 determines whether or not the conditional expression (1) is satisfied through the device operation control unit 26. Is based on the data stored in the operation control information storage unit 351, and selects the target device 10 having a higher priority and controls the operation of the target device 10. Thereby, the power consumption of the target apparatus 10 can be reduced.

  Further, when the conditional expression (1) is not satisfied, the power consumption amount of the target device 10 at the end of the demand time period is lower than the target power consumption amount only with the target device 10 currently under demand control. As a result, the power consumption of the target device 10 can be reduced.

  When the restoration control is determined through the control pattern determination unit 24, the main control unit 21 determines whether or not the conditional expression (2) is satisfied through the device operation control unit 26. Based on the data stored in the operation control information storage unit 351, the target device 10 having a low priority is selected and the operation of the target device 10 is controlled. Thereby, when there is a device under demand control, the device under demand control can be returned to the original range within a range where the power consumption of the target device 10 at the end of the demand time limit does not exceed the target power consumption.

  In addition, when the conditional expression (2) is not satisfied, if the device that is the restoration candidate is restored, the power consumption of the target device 10 at the end of the demand time limit will exceed the target power consumption. Restoration control is not performed.

  Then, the main control unit 21 of the demand monitoring control device 201 measures the power consumption amount measured by the power consumption amount measurement unit 22 through the performance effect calculation unit 41 and from the power consumption amount appropriately stored in the power consumption amount storage unit 321 of the storage area 30. An actual effect for each control content stored in the operation control information storage unit 351 of the storage area 30 is calculated as a performance effect. The performance effect data calculated in this way is output on the screen of the setting input unit together with the data stored in the operation control information storage unit 351 so that it can be viewed.

  When summarizing the demand monitoring control device 201 in the second embodiment, the power consumption measuring unit 22 constitutes a power consumption measuring unit, and the control level determining unit 23, the control pattern determining unit 24, and the monitoring unit 25 determine processing contents. The device operation control unit 26 constitutes the operation control means.

  And according to the demand monitoring control apparatus 201 in Embodiment 2 of this invention, the target power consumption amount in a demand time interval, ie, the power consumption amount which makes the value at the time of a demand time limit zero, through the control level judgment part 23, The power consumption amount at each time point determined to increase on average toward a preset value at the end point of the demand time period is set as a first threshold, and the upper limit power consumption amount in the demand time period, that is, at the end point of the demand time period The power consumption, which is obtained by multiplying the target power consumption value by the preset upper limit power consumption determination ratio, is the value at the start of the demand time period. Power consumption at each point required to increase on average, and at any point in the demand period The power consumption amount at each time point determined as the target power consumption amount increasing on average toward the value of the target power consumption amount at the end of the demand time period is set as the second threshold value, and the first threshold value and the second threshold value are set. The control level is determined by comparing each and the power consumption amount, and the control pattern is determined based on the data stored in the control pattern storage unit 34 through the control pattern determination unit 24 and the monitoring unit 25. Even if there is a variation in power consumption or a temporary sudden change in power consumption, the possibility that the power consumption of the target device 10 at the end of the demand time limit will exceed the target power consumption is appropriately determined. The power consumption can be suppressed within a predetermined upper limit value.

  Further, according to the demand monitoring control device 201, since the operation of the target device 10 is controlled through the device operation control unit 26 based on the data stored in the operation control information storage unit 351, particularly demand control or restoration is performed. Since the determination of the execution of the control is performed using the conditional expression (1) or the conditional expression (2), the power consumption status of the target device 10 is monitored to control the operation of the plurality of target devices 10 in the target facility. It can be done efficiently without waste.

  Furthermore, according to the demand monitoring control apparatus 201, the actual results for each control content stored in the operation control information storage unit 351 from the power consumption amount appropriately stored in the power consumption storage unit 321 through the performance effect calculation unit 41. As the result effect is calculated, the calculated result effect data is output on the screen of the setting input unit together with the data stored in the operation control information storage unit 351 so that it can be viewed. The difference from the expected effect stored in advance can be confirmed, and if the difference is large, the accuracy of control can be promptly improved by changing the setting.

  As described above, the demand monitoring control device according to the present invention controls these target devices by controlling the operation of a plurality of target devices connected to a common power supply line in a facility such as a store, a building, or a factory. This is useful for suppressing the amount of power consumption within a predetermined upper limit.

It is the block diagram which showed typically the structure of the demand monitoring control apparatus in Embodiment 1 of this invention. It is the chart which showed the image of the determination process in the control level determination part in FIG. It is the chart which showed the image of the determination process in the control level determination part in FIG. It is the chart which showed the image of the data stored in the control pattern storage part in FIG. It is the chart which showed the image of the data stored in the operation control information storage part in FIG. It is the block diagram which showed typically the structure of the demand monitoring control apparatus in Embodiment 2 of this invention. 3 is a chart showing an image of data stored in an operation control information storage unit in FIG. 1 and data calculated by a performance effect calculation unit.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Target apparatus 20,201 Demand monitoring control apparatus 21 Main control part 22 Power consumption measuring part 23 Control level determination part 24 Control pattern determination part 25 Monitoring part 26 Equipment operation control part 27 Warning output part 28 Alarm output part 29 Emergency warning Output unit 30 Storage area 31 Main memory 32, 321 Power consumption storage unit 33 Judgment criterion storage unit 34 Control pattern storage unit 35, 351 Operation control information storage unit 41 Actual effect calculation unit

Claims (4)

Power consumption measuring means for measuring the power consumption of the target device;
Processing content determining means for determining the processing content of power consumption control of the target device based on the power consumption measured by the power consumption measuring means within a demand time period that is a predetermined unit time;
Operation control means for controlling the operation of the target device based on the processing content determined by the processing content determination means,
In the demand monitoring control device that suppresses the power consumption of the target device within a predetermined upper limit within the demand time limit,
The processing content determination means includes
The power consumption amount at each time point, which is calculated as an average increase in the power consumption amount with zero value at the start time of the demand time period, toward the value at the time point when the demand time period ends is set as the target power consumption amount. A first threshold value,
The target power consumption at any point in the demand time period is the power consumption that is obtained by multiplying the target power consumption value at the end of the demand time period by the preset upper-limit power consumption rate and the value at the start of the demand time period. The power consumption amount at each time point required to increase on average toward the power amount value, and the target power consumption at an arbitrary time point of the demand time period are directed toward the target power consumption value at the end point of the demand time period. And determining a processing content using a second threshold value with the power consumption at each time point determined as an average increase as the upper limit power consumption.   The demand monitoring control apparatus according to claim 1, wherein the operation control unit controls the operation of the target device based on target device control information in which control priority and control contents of the target device are stored in advance.   The operation control means controls the operation of the target device based on the target device control information in which the control priority order of the target device, the control content, the control execution availability condition, and the expected effect by the control execution are stored in advance. The demand monitoring control apparatus according to claim 1.   An actual effect calculating means for calculating an actual effect for each control content stored in advance in the target device control information from the electric power consumption measured by the electric energy consumption measuring means and outputting as an actual effect is provided. The demand monitoring control apparatus according to claim 3.

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