JP7019538B2 - Phase-advancing capacitor controller, demand controller and program - Google Patents

Description

The present invention relates to a phase-advancing capacitor control device, a demand control device and a program, particularly to control the operation of the phase-advancing capacitor.

There are two basic electricity charges: a power factor discount and a power factor increase, in which a power factor is discounted when the power factor exceeds 85% and a power factor is increased when the power factor falls below 85%. Therefore, in a normal building, one or a plurality of phase-advancing capacitors are installed in order to improve the deteriorated power factor (delayed power factor). For example, if the power factor deteriorates due to an increase in power consumption due to an increase in the number of operating electrical equipment, the delay power factor should be improved by operating the number of phase-advancing capacitors according to the degree of deterioration. It is in operation.

On the other hand, in the case of the advancing power factor, there is no penalty such as an increase in electricity charges, so the phase advancing capacitor may be operated more than necessary for safety. If this happens, the power factor will advance too much, and as a result, the voltage at the receiving end will rise, which may adversely affect the equipment and wiring.

Therefore, in order to constantly monitor the power factor and operate it so that the power factor approaches 100%, for example, an automatic power factor adjuster is installed to adjust the number of phase-advancing capacitors to the optimum.

Japanese Unexamined Patent Publication No. 8-251824 Japanese Unexamined Patent Publication No. 9-182295 Japanese Unexamined Patent Publication No. 2012-235680

However, in the past, since the phase-advancing capacitor was controlled so as to improve the power factor after the deterioration of the power factor was detected, a state in which the power factor deteriorated occurred when switching between operation and stop of the equipment. Was there. For example, when a plurality of facilities are stopped together by demand control or the like, the power factor advances too much, and when a plurality of facilities are collectively restarted at the end of the demand time limit, a delay occurs in the power factor. Will end up.

An object of the present invention is to prevent deterioration of the power factor that may occur when the operating state of the equipment changes.

The phase-advancing capacitor control device according to the present invention is an acquisition means for acquiring the equipment subject to operation control at a predetermined timing and the operation or stop of the equipment from a plurality of equipment installed in the facility, and the facility. Based on the actual power factor in the above, the power factor predicting means for predicting the power factor when the equipment to be motion-controlled acquired by the acquiring means is controlled to operate at the predetermined timing, and the prediction by the power factor predicting means. If the deterioration of the power factor is predicted from the result of It depends on the capacitor selection means for selecting the phase-advancing capacitor that acts to offset the deterioration of the above, and the capacitor selection means according to the operation control of the equipment to be operated and controlled acquired by the acquisition means at the predetermined timing. It has a capacitor control means that controls the action of the phase-advancing capacitor based on the selection, and the capacitor selecting means deteriorates the power factor from all the phase-advancing capacitors regardless of the current operating state of the phase-advancing capacitor. It is characterized by selecting a phase-advancing capacitor that acts to offset the minute .

Further, the power factor predicting means predicts the amount of change in the power factor when the operation of the equipment subject to motion control acquired by the acquisition means is controlled based on the actual power factor in the facility, and predicts the change amount. It is characterized by predicting the power factor by adding up the amount of change in each equipment.

The demand control device according to the present invention is a demand for selecting a facility for operating or stopping so that the predicted power usage does not exceed the contract power based on the operation record and the power usage record of each of the plurality of facilities installed in the facility. From the power factor predicting means for predicting the power factor when the operation of the equipment selected by the demand management means is controlled based on the management means and the actual power factor in the facility, and the result of the prediction by the power factor predicting means. When deterioration of power factor is predicted, the deterioration of power factor is offset from multiple phase-advancing capacitors installed in the facility by combining those with different capacitances. Capacitor selection means for selecting a phase-advancing capacitor to operate or stop, equipment control means for controlling the operation of the equipment selected by the demand management means, and equipment control means for controlling the operation of the equipment. It has a capacitor control means that controls the operation of the phase-advancing capacitor based on the selection by the capacitor selection means , and the capacitor selection means is among all the phase-advancing capacitors regardless of the current operating state of the phase-advancing capacitor. It is characterized by selecting a phase-advancing capacitor that acts to offset the deterioration of the power factor .

The program according to the present invention is a power factor in an acquisition means and a facility for acquiring a computer from a plurality of facilities installed in the facility, which is the target of operation control at a predetermined timing, and whether the facility is operated or stopped. From the results of prediction by the power factor predicting means and the power factor predicting means for predicting the power factor when the equipment subject to motion control acquired by the acquiring means is controlled to operate at the predetermined timing based on the actual rate. If deterioration of the power factor is predicted, the deterioration of the power factor is due to the deterioration of the power factor from among the multiple phase-advancing capacitors installed in the facility, which are composed by combining those with different capacitances . Capacitance selection means for selecting a phase-advancing capacitor to offset the It functions as a capacitor control means that controls the action of the phase capacitor, and the capacitor selection means cancels out the deterioration of the power factor from all the phase-advancing capacitors regardless of the current working state of the phase-advancing capacitor. Select the phase-advancing capacitor to act .

According to the present invention, it is possible to prevent deterioration of the power factor that may occur when the operating state of the equipment changes.

It is a schematic block diagram which shows the apparatus and equipment installed in the facility in Embodiment 1. FIG. It is a block block diagram of the central monitoring apparatus in Embodiment 1. FIG. It is a flowchart which shows the demand control processing in Embodiment 1. FIG. It is a block block diagram of the central monitoring apparatus in Embodiment 2. FIG.

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.
FIG. 1 is a schematic configuration diagram showing devices and equipment related to the electric power system installed in the facility. A plurality of facilities 1 to which electric power is supplied and operated are set in the facility. In the present embodiment, since a building is assumed as a facility, the equipment 1 includes air conditioning equipment, lighting equipment, an elevator device, and the like installed on each floor of the building. In FIG. 1, a transformer 2 for stepping down a high voltage transmitted from an electric power company (power plant), a phase advancing capacitor 4 connected to a power line 3 in parallel with the transformer 2 (equipment 1), and a phase advancing capacitor 4 are shown. A power factor measuring circuit 5 for measuring the electric power and the power factor supplied from the electric power company is shown. Further, breakers 6 and 7 are arranged between the transformer 2 and each facility 1 and between the power line 3 and each phase-advancing capacitor 4, and the breakers 6 and 7 are turned on / off (connection / disconnection). ), The supply of electric power to each facility 1 and each phase-advancing capacitor 4 is controlled. The controller 8 controls on / off switching of the breakers 6 and 7. Further, the controller 8 controls the operation of each equipment 1. For example, when the equipment 1 is an air-conditioning equipment, the power is turned on / off, the temperature is set, and the like. Further, the controller 8 acquires the power and the power factor measured by the power factor measuring circuit 5. The controller 8 is connected to the central monitoring device 10 so as to be capable of data communication, and performs the above-mentioned various controls under the instruction of the central monitoring device 10.

The central monitoring device 10 is an information processing device that monitors and controls the operations of the equipment 1, the controller 8, and the like in the facility. The central monitoring device 10 can be realized by the hardware configuration of a general-purpose computer that has existed in the past. That is, the central monitoring device 10 is configured by connecting a CPU, a ROM, a RAM, a hard disk drive (HDD) as a storage means, and a network interface provided as a communication means to an internal bus. Further, if necessary, a user interface having an input means such as a mouse or a keyboard and a display means such as a display may be provided.

The phase-advancing capacitor 4 is connected in parallel with the load of the equipment 1 or the like, and is a means for improving the lagging power factor and making it possible to effectively consume the electric power by setting the advancing power factor in the power system. It is also called a power factor improving capacitor. In the present embodiment, a plurality of phase-advancing capacitors 4 are installed, and the capacitance load in the entire phase-advancing capacitor 4 can be adjusted by controlling the on / off of the breaker 7. The phase-advancing capacitors 4 are prepared by combining different capacitors having the same capacitance rather than having the same capacitance.

FIG. 2 is a block configuration diagram of the central monitoring device 10 according to the present embodiment. The central monitoring device 10 in the present embodiment functions as a demand control device and a phase advance capacitor control device, and has a demand management unit 11, a facility control unit 12, a power factor change amount prediction unit 13, a power factor prediction unit 14, and a capacitor. Selection unit 15, capacitor control unit 16, equipment operation record database (DB) 21, power factor record database (DB) 22, power factor transition record database (DB) 23, device control information storage unit 24, and power factor information for each facility. It has a storage unit 25. The components not used in the description of the present embodiment are omitted from the drawings.

In the equipment operation record database 21, actual information that can specify the operating state of the equipment 1, particularly the operating or stopped time of the equipment 1, is accumulated for each equipment 1. Specifically, the information collected at a predetermined time interval, specifically, the operating state (operating or stopped) of each equipment 1 at the time is accumulated. As for the operating state of the equipment 1, for example, when the equipment 1 is an air-conditioning equipment, the power consumption differs depending on the contents of the setting even if the equipment 1 is in operation because it is not always operated at the maximum capacity depending on the set temperature and the like. However, in the present embodiment, for convenience of explanation, it is assumed that the state is either operating or stopped. In other words, the controller 8 will be described assuming a case where the equipment 1 is changed from a stopped state to an operating state (full operating state) and a case where the equipment 1 is changed from the operating state to the stopped state.

The actual power consumption database 22 stores actual data indicating the transition of the electric power used in the entire facility, that is, time-series data indicating the actual value of the electric power used. Specifically, since the power used in each facility 1 is sent to the controller 8 at predetermined time intervals, the power used in the entire facility at that time is calculated and accumulated by adding up the power used. ..

The power factor transition record database 23 stores actual data showing the transition of the power factor in the facility, that is, time-series data showing the actual value of the power factor. Specifically, the power factor is measured by the power factor measuring circuit 5 at predetermined time intervals and the power factor is accumulated.

It is desirable that data is measured and accumulated in each database 21 to 23 at the same cycle, for example, a 1-minute cycle. In the present embodiment, for convenience of explanation, each database 21 to 23 is provided in the central monitoring device 10, but data contained in each database 21 to 23 is acquired from an external database server via a network. It may be configured to do so.

The central monitoring device 10 in the present embodiment performs demand control. Therefore, the demand management unit 11 is provided. The demand management unit 11 predicts the power consumption within the demand time limit based on the equipment operation record database 21 and the power consumption record database 22, and if the predicted power consumption exceeds the contract power, the equipment is in operation so as not to exceed it. Select the equipment 1 to be stopped from among 1. In the case of demand control, basically, the equipment 1 to be stopped is selected from the equipment 1 in operation, but if the power consumption is sufficient, the equipment 1 to be operated is selected from the equipment 1 in operation. You may choose. The selection result of the equipment 1 by the demand management unit 11 is registered in the equipment control information storage unit 24. The equipment control unit 12 controls the operation of the equipment 1 selected by the demand management unit 11 by instructing the controller 8. That is, the controller 8 controls the breaker 6 connected to the equipment 1 to be stopped, and cuts off the electric power to the equipment 1. It also controls the circuit breaker 6 connected to the equipment 1 to be operated and supplies electric power to the equipment 1.

The power factor change amount prediction unit 13 and the power factor prediction unit 14 are provided as power factor prediction means. Among them, the power factor change amount prediction unit 13 operates the equipment 1 based on the power factor transition actual database 23. The amount of change in the power factor when the state is changed is predicted for each facility 1. Specifically, the amount of change in the power factor when the operation of the stopped equipment 1 is started (operated) is predicted. On the contrary, the amount of change in the power factor when the operating equipment 1 is stopped is predicted. The predicted result is stored in the equipment power factor information storage unit 25. The power factor prediction unit 14 predicts the power factor when the equipment 1 selected by the demand management unit 11 is operation-controlled at a designated timing, that is, within the demand time limit, from the equipment-by-equipment power factor information storage unit 25. When the deterioration of the power factor is predicted by the prediction by the power factor prediction unit 14, the capacitor selection unit 15 selects the phase-advancing capacitor 4 from among the plurality of phase-advancing capacitors 4 so as to offset the deterioration of the power factor. Select. The capacitor control unit 16 controls the operation of the equipment 1 selected by the demand management unit 11 at a designated timing by instructing the controller 8, and the phase-advancing capacitor 4 is selected by the capacitor selection unit 15. Control the action. That is, the controller 8 controls the breaker 7 connected to the phase-advancing capacitor 4 that does not act, and cuts off the power to the phase-advancing capacitor 4. Further, it controls the breaker 7 connected to the phase-advancing capacitor 4 to act on, and supplies electric power to the phase-advancing capacitor 4.

Each component 11 to 16 in the central monitoring device 10 is realized by a cooperative operation of a computer forming the central monitoring device 10 and a program operated by a CPU mounted on the computer. Further, each of the storage means 21 to 25 is realized by the HDD mounted on the central monitoring device 10. Alternatively, RAM or an external storage means may be used via the network.

Further, the program used in the present embodiment can be provided not only by communication means but also by storing it in a computer-readable recording medium such as a CD-ROM or a USB memory. Programs provided from communication means and recording media are installed in a computer, and various processes are realized by sequentially executing the programs by the CPU of the computer.

Next, the demand control process in the present embodiment will be described with reference to the flowchart shown in FIG. This process is performed periodically within the demand time limit.

Generally, in demand control, when the expected power consumption within the demand time limit exceeds the contract power, the power consumption is reduced by stopping some of the operating facilities 1. In order to select the equipment 1 to be stopped, the demand management unit 11 refers to the equipment operation record database 21 and the power consumption record database 22 to determine the power consumption from the current power consumption within the demand time limit to the power consumption at the end of the demand time point. Predict (step 101). Then, it is determined whether or not the predicted power consumption (predicted power) exceeds the target power. In the case of demand control, the target power is a contract power or a threshold value set based on the contract power (for example, power 5% lower than the contract power).

If the predicted power does not exceed the target power (N in step 102), the current operating status of the equipment 1 may be maintained, and this process is terminated. When the predicted power exceeds the target power (Y in step 102), the demand management unit 11 selects the equipment 1 to be stopped from the operating equipment 1 so that the predicted power at the end of the demand time point does not exceed the target power. do. Then, the equipment control information including the operation / stop of the selected equipment 1 and the equipment 1 is generated and registered in the equipment control information storage unit 24 (step 103). In the case of demand control, since the equipment 1 is basically only stopped, it is not necessary to set the operation / stop distinction.

Then, as will be described later, the equipment control unit 12 will control the operation of the corresponding equipment 1 with reference to the setting contents of the equipment control information, but if the demand control itself is processed in the same manner as before. good.

Subsequently, the power factor change amount prediction unit 13 predicts the change amount of the power factor for each equipment 1 when the operating state of the equipment 1 is changed based on the power factor transition actual database 23 (step 104). In the power factor transition record database 23, the power factor at that time point and the equipment 1 in operation at that time point are stored in association with each other at a predetermined cycle (for example, every minute). If the operating state of the equipment 1 at the time of measuring the power factor is stored in the equipment operation record database 21, the equipment operation record database 21 may be referred to.

The power factor change amount prediction unit 13 executes machine learning by inputting the power factor transition actual database 23, so that the power factor of each equipment 1 when the operation is started from the state where the equipment 1 is stopped is calculated. The amount of change (for example, + x%) is output as a learning result. For example, if the current power factor is 100%, the power factor deteriorates (it becomes a value smaller than 100%) when the equipment 1 starts operation, so in order to improve the deteriorated amount (x%). It is necessary to advance the power factor. "+" Is used to indicate that progress is being made. That is, since the power factor deteriorates (becomes a delayed power factor) when the equipment 1 is operated, the power factor is obtained by advancing the phase of the current by operating the phase-advancing capacitor 4 more than ever to obtain the power factor. Means that it is predicted that + x% needs to be improved.

On the other hand, when the equipment 1 is stopped from the operating state, the amount of change in the power factor (for example, −y%) at that time is also output as a learning result. For example, if the current power factor is 100%, the power factor will go too far and worsen (beyond 100%) due to the shutdown of equipment 1, so in order to improve the deteriorated amount (y%). The power factor needs to be delayed. "-" Is used to indicate that it is delayed. That is, when the equipment 1 is stopped, the power factor deteriorates (progresses too much). Therefore, by stopping some of the working phase-advancing capacitors 4 and delaying the phase of the current to obtain the delayed power factor, the power factor is obtained. Means that we are predicting that we need to improve by -y%.

As mentioned above, "improvement of power factor" means to make the value of power factor as close to 1 (100%) as possible in order to improve power factor. This is equivalent to making the apparent power almost equal to the active power by making the power factor angle (phase angle) as close to 0 degrees as possible to reduce the phase difference between the voltage and the current.

In this embodiment, the amount of change in the power factor of each equipment 1 is predicted by machine learning using the power factor transition record database 23 as an input, but if possible, the equipment 1 is stopped from the operating state one by one. Then, the power factor change amount of each equipment 1 may be obtained by switching from the stopped state to the operating state.

When the power factor change amount prediction unit 13 predicts the power factor change amount for each equipment 1 as described above, the power factor change amount prediction unit 13 registers the power factor change amount information storage unit 25 for each equipment.

Subsequently, the power factor prediction unit 14 reads out the equipment 1 registered in the device control information storage unit 24 and the operation / stop of the equipment 1, and refers to the operation / stop of each of the read equipment 1 to correspond to the corresponding equipment 1. The amount of change in the power factor to be performed is acquired from the power factor information storage unit 25 for each equipment. Then, by adding up the acquired power factor change amounts, the power factor change amount due to the equipment 1 to be operated and controlled, that is, the power factor change amount in the entire facility is calculated (step 105). In the case of demand control, since the equipment 1 is basically stopped, the values of −y% obtained for each of the above-mentioned equipment 1 are added up. Assuming that the total power factor change amount is −y _all %, it is predicted that the current power factor will be 100% and y _all % will be advanced too much. By calculating the amount of change in the power factor, the power factor when the equipment 1 to be controlled is stopped can be predicted.

Therefore, the capacitor selection unit 15 selects the phase-advancing capacitor 4 to stop the action from the phase-advancing capacitors 4 currently acting to delay the power factor (step 106). Since the current apparent power is measured, the reactive power corresponding to the power factor y _all % can be obtained. For example, it is assumed that the reactive power at this time is y _e [var]. On the other hand, since the capacitance of each phase-advancing capacitor 4 (here, the capacitance display is referred to as var [var]) is known, the total capacitance of the currently operating phase-advancing capacitors 4 is y _e [var]. ], The phase advancing capacitor 4 may be selected. In order to combine a plurality of phase-advancing capacitors 4 to obtain a desired capacitance ( _ye [var]), it is desirable to prepare phase-advancing capacitors 4 having different capacitances as described above.

In the above description, in order to reduce the number of switching of the operating state, the phase-advancing capacitor 4 to be stopped is selected from the phase-advancing capacitors 4 currently operating, and is invalid corresponding to the amount of power factor change. I tried to reduce power. However, without considering the current operating state of the phase-advancing capacitor 4, for example, in step 105, the power factor is predicted instead of the power factor change amount (can be calculated from the current power factor and the power factor change amount). The phase-advancing capacitor 4 that acts to improve the power factor to 100% may be selected from all the phase-advancing capacitors 4. By selecting the phase-advancing capacitor 4 whose total capacitance is y _e [var] from the phase-advancing capacitors 4 currently in operation, all the phase-advancing capacitors 4 can be selected as candidates for selection, so that the power factor It can be made as close as possible to 100%.

By the above processing, the equipment 1 and the phase advance capacitor 4 to be controlled can be selected. Then, the equipment control unit 12 controls the operation of the corresponding equipment 1 with reference to the setting contents of the equipment control information, while the capacitor control unit 16 controls the operation of the phase-advancing capacitor 4 selected by the capacitor selection unit 15. Control (step 107).

Conventionally, when a deterioration of the power factor is detected in response to a change in the operating state of the equipment 1, an automatic power factor adjuster is used to switch the operating state of the phase advancing capacitor 4 in order to improve the power factor. Was there. In the present embodiment, when the equipment 1 to be controlled is selected as described above, the power factor that changes with the change of the operating state of the equipment 1 is predicted, and the predicted power factor change (deterioration). ) The phase-advancing capacitor 4 that acts to offset the minute is selected in advance. Since the operation of the phase-advancing capacitor 4 is controlled together with the equipment 1, it is possible to prevent the power factor from deteriorating due to the change in the operating state of the equipment 1.

In the present embodiment, as described above, the power factor change amount prediction unit 13 predicts the change amount of the power factor for all the equipment 1, but the equipment 1 to be controlled is acquired. At least, the amount of change in the power factor may be predicted for the acquired equipment 1. Further, in the present embodiment, the amount of change in the power factor is predicted in the demand control process, but the amount of change in the power factor is determined for each facility 1 at a desired timing separately from the demand control process. You may try to predict. If the number of equipment 1 is enormous and it takes too much time to predict the amount of change in the power factor, the operation control for the equipment 1 may be delayed and the power consumption may exceed the target power. Therefore, this is to avoid this.

Embodiment 2.
In the first embodiment, the case where the characteristic control of the phase-advancing capacitor 4 in the present invention is applied to the demand control has been described as an example. In this embodiment, a case where it is applied to other than demand control will be described as an example.

FIG. 4 is a block configuration diagram of the central monitoring device according to the present embodiment. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. The central monitoring device 10 in the present embodiment replaces the demand management unit 11, the equipment operation record database 21, and the power consumption record database 22 of the first embodiment with the operation plan information analysis unit 17 and the operation plan information storage unit 26. have. That is, unlike the first embodiment, the central monitoring device 10 does not function as a demand control device but functions as a phase-advancing capacitor control device. Of course, in the present embodiment, these components 11, 1, 2, and 22 are not used, so they are omitted from FIG. 4, but they may be configured in combination with the first embodiment.

In the operation plan information storage unit 26, the operation plan of the equipment 1, in other words, the schedule information regarding the operation of each equipment 1 is set and registered. The operation plan information analysis unit 17 analyzes the operation plan information set and registered in the operation plan information storage unit 26 to extract information on when and which equipment 1 is changed to start / stop, and the operation state. The device control information including the date and time information to be switched, the equipment 1 to be controlled at that time, and the operation / stop of the equipment 1 is generated and set and registered in the equipment control information storage unit 24. The operation plan information analysis unit 17 is realized by the cooperative operation of the computer forming the central monitoring device 10 and the program operated by the CPU mounted on the computer. Further, the operation plan information storage unit 26 is realized by the HDD mounted on the central monitoring device 10. Alternatively, RAM or an external storage means may be used via the network.

In the above embodiment 1, the equipment 1 to be controlled is selected when performing the demand control, but in the present embodiment, the equipment 1 to be operated or stopped is selected according to the operation plan of the equipment 1. The equipment. In demand control, the equipment 1 is basically stopped, but according to the operation plan, there is a high possibility that the operation and the stop of the equipment 1 are mixed. However, since the amount of change in the power factor is coded, the process related to the power factor (steps 104 to 106) described in the demand control process can be used as it is even when the operation and the stop are mixed. The difference from the first embodiment is the selection of the equipment 1 whose operating state is changed, but the operation plan information analysis unit 17 determines the date and time when the operating state is changed by analyzing the operation plan information, and the change target. The equipment 1 and the operation / stop of the equipment 1 are extracted, and the equipment control information is generated and registered in the equipment control information storage unit 24. Since the further processing may be the same as that of the first embodiment, the description thereof will be omitted.

In each of the above embodiments, the case where the phase-advancing capacitor control device is applied to a building to which high-voltage power is supplied has been described as an example. It may be applied to facilities that need to improve the power factor by applying the system.

1 equipment, 2 transformers, 3 power lines, 4 phase-advanced capacitors, 5 power factor measurement circuits, 6, 7 breakers, 8 controllers, 10 central monitoring devices, 11 demand management units, 12 equipment control units, 13 power factor change prediction Unit, 14 Power factor prediction unit, 15 Capacitor selection unit, 16 Capacitor control unit, 17 Operation plan information analysis unit, 21 Equipment operation record database (DB), 22 Power factor record database (DB), 23 Power factor transition record database (DB), 24 equipment control information storage unit, 25 equipment power factor information storage unit, 26 operation plan information storage unit.

Claims (4)

From among the multiple equipment installed in the facility, the equipment subject to operation control at a predetermined timing, the acquisition means for acquiring the operation or stop of the equipment, and the acquisition means.
A power factor predicting means for predicting the power factor when the equipment subject to motion control acquired by the acquisition means is motion-controlled at the predetermined timing based on the actual power factor in the facility.
When deterioration of the power factor is predicted from the result of prediction by the power factor predicting means, a plurality of phase-advancing capacitors installed in the facility and having different capacitances are combined to form a plurality of phase-advancing capacitors. Capacitor selection means for selecting a phase-advancing capacitor that acts to offset the deterioration of the power factor from among the capacitors,
Capacitor control means that controls the operation of the phase-advancing capacitor based on the selection by the capacitor selection means according to the operation control of the equipment subject to operation control acquired by the acquisition means at the predetermined timing.
Have,
The capacitor selection means is characterized in that a phase-advancing capacitor that acts to offset the deterioration of the power factor is selected from all the phase-advancing capacitors regardless of the current operating state of the phase-advancing capacitor. Capacitor controller. The power factor predicting means predicts the amount of change in the power factor when the operation of the equipment subject to motion control acquired by the acquisition means is controlled based on the actual power factor in the facility, and each predicted amount is predicted. The phase-advancing capacitor control device according to claim 1, wherein the power factor is predicted by adding up the changes in the equipment. Demand management means for selecting equipment to operate or stop so that the estimated power consumption does not exceed the contracted power based on the operation results and power usage results of each of the multiple facilities installed in the facility.
A power factor predicting means for predicting the power factor when the operation of the equipment selected by the demand management means is controlled based on the actual power factor in the facility.
When deterioration of the power factor is predicted from the result of prediction by the power factor predicting means, a plurality of phase-advancing capacitors installed in the facility and having different capacitances are combined to form a plurality of phase-advancing capacitors. Capacitor selection means for selecting a phase-advancing capacitor to operate or stop so as to offset the deterioration of the power factor from among the capacitors.
Equipment control means that controls the operation of the equipment selected by the demand management means, and
A capacitor control means that controls the operation of a phase-advancing capacitor based on the selection by the capacitor selection means according to the equipment control means controlling the operation of the equipment.
Have,
The capacitor selection means is a demand control characterized by selecting a phase-advancing capacitor that acts to offset the deterioration of the power factor from all the phase-advancing capacitors regardless of the current operating state of the phase-advancing capacitor. Device. Computer,
An acquisition means for acquiring the operation or stop of the equipment subject to operation control at a predetermined timing from among a plurality of equipment installed in the facility.
A power factor predicting means that predicts the power factor when the equipment subject to motion control acquired by the acquisition means is motion-controlled at the predetermined timing based on the actual power factor in the facility.
When deterioration of the power factor is predicted from the result of prediction by the power factor predicting means, a plurality of phase-advancing capacitors installed in the facility and having different capacitances are combined to form a plurality of phase-advancing capacitors. Capacitor selection means for selecting a phase-advancing capacitor that acts to offset the deterioration of the power factor from among the capacitors.
A capacitor control means that controls the operation of a phase-advancing capacitor based on the selection by the capacitor selection means according to the operation control of the equipment subject to operation control acquired by the acquisition means at the predetermined timing.
To function as
The capacitor selection means is a program that selects a phase-advancing capacitor that acts to offset the deterioration of the power factor from all the phase-advancing capacitors regardless of the current operating state of the phase-advancing capacitor .

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