JP3375923B2 - Demand control device - Google Patents

Demand control device

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Publication number
JP3375923B2
JP3375923B2 JP37114399A JP37114399A JP3375923B2 JP 3375923 B2 JP3375923 B2 JP 3375923B2 JP 37114399 A JP37114399 A JP 37114399A JP 37114399 A JP37114399 A JP 37114399A JP 3375923 B2 JP3375923 B2 JP 3375923B2
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JP
Japan
Prior art keywords
load
group
time
signal
warning signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP37114399A
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Japanese (ja)
Other versions
JP2001186658A (en
Inventor
吉大 山本
Original Assignee
小泉コンピューター株式会社
株式会社洸陽電機
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Filing date
Publication date
Application filed by 小泉コンピューター株式会社, 株式会社洸陽電機 filed Critical 小泉コンピューター株式会社
Priority to JP37114399A priority Critical patent/JP3375923B2/en
Publication of JP2001186658A publication Critical patent/JP2001186658A/en
Application granted granted Critical
Publication of JP3375923B2 publication Critical patent/JP3375923B2/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

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Description

DETAILED DESCRIPTION OF THE INVENTION [0001] [0001] The present invention relates to an electric power demand (demand).
Monitor), and cut off / load the load appropriately, and
Control so that the amount of power supplied to the load does not exceed a predetermined value
The present invention relates to a demand control device. [0002] 2. Description of the Related Art A conventional demand control device has a power supply terminal.
When supplying power to a load group from the
Outputs a shutoff signal when the amount of power
Each load is shut down by the
Input signal) to apply each load.
This controls the supply electric power so that it does not exceed a predetermined value.
You. [0003] However, the conventional Deman
The mode control device simply outputs and stops the shutoff signal as described above.
Because it stops, fine shut-off / closing control is possible.
There is no problem. Specifically, the following issues
There is. First, depending on the type of load, once stopped
Some require a certain amount of time before restarting. For example, cold
In electrical equipment such as freezers and air conditioners, after the
Needs time to collect. Also, depending on the type of load
Are those that require a certain amount of time to stop once started
is there. For example, for refrigerators and air conditioners,
Stopping may cause the temperature to rise too high,
The interval is determined by the specification. So, demand
When using a control device, the required restart time and stop time
A timer is provided on the electrical equipment side to load
Need to be Also, each timer is distributed
Setting takes time. In addition, electrical equipment
There is something I do not want to stop. That is, there is a priority
However, this priority cannot be fully reflected. Also, for each load
When the required stop time is secured, the amount of power supplied is sufficiently suppressed
It becomes difficult to do. In addition, maintenance of electrical equipment as a load
Need to stop the demand control device.
If it does not have a backup power supply,
Setting takes time. In addition, it has a backup power supply
Even if the power is exhausted. The present invention has been made to solve the above problems.
Supplied to electrical equipment and equipment that
When reducing power costs, the
Demand control device that can perform padding cutoff / closing control
The purpose is to provide a device. [0005] Means for Solving the Problems To achieve the above object,
Therefore, of the present invention, the invention described in claim 1 is a power supply terminal.
When supplying power to a load group consisting of one or more loads from
And output / stop the cutoff signal to each load to cut off each load
/ Supply to the load group at predetermined time intervals
A demand control device that controls the amount of power not to exceed a predetermined value.
And the amount of power supplied to the load group within the predetermined time is
Outputs the first warning signal when it exceeds the above specified value
Stop the first warning signal when it is no longer likely to exceed
Supply power monitoring means and shut off for each load in the load group
The first securing time to be secured before the later input can be set
When the first warning signal is output, the setting
In accordance with the said interruption for at least said first securing time
And a load shedding / closing control means for outputting a signal.,the above
The load shedding / closing control means includes a plurality of load groups.
Group, and for each group,
Set the time of interruption based on the start time of interruption, and
The time at which the load first shuts down for each load belonging to the group
The interruption time can be set as a reference.
When a warning signal is received, the above loads are shut off according to the setting
To output the cutoff signal.Features
And According to a second aspect of the present invention, the power supply
When supplying power to a load group consisting of one or more loads from the end
And output / stop the cutoff signal to each load to cut off each load
/ Supply to the load group at predetermined time intervals
A demand control device that controls the amount of power not to exceed a predetermined value.
And the amount of power supplied to the load group within the predetermined time is
Outputs the first warning signal when it exceeds the above specified value
Stop the first warning signal when it is no longer likely to exceed
Supply power amount monitoring means and input for each load of the load group
Configurable second securing time to be secured until after shutdown
Being output based on the first warning signal.
When the shut-off signal is stopped,
At least during the second securing time, the cutoff signal is stopped.
With load shedding / closing control means, Above load shedding / closing
The control means divides the load group into a plurality of groups, and
Based on the shutdown start time of the group to be shut down first for each loop
Set the cutoff time as standard and
Load is interrupted first for each load Time of interruption based on the time of
Time can be set, and the first warning signal is received.
Then, according to the setting, the load is cut off so that the load is cut off.
Output a disconnect signalIs characterized byYou. Ma
Claims3In the invention described in the above, the load shedding / closing control
Means are set to block the plurality of groups sequentially.
If the next group starts blocking, the previous group
Signal to shut off all loads belonging to
It is characterized by output. Also, billing
Term4In the invention described in (1), the load shedding / closing control means includes:
Time of other interruption earlier than the interruption time of each above group
Can be set for each group, and the first warning signal
After receiving the next first warning signal after receiving the signal, the other
The above-described blocking is performed so as to block each group according to the time of the blocking.
It is characterized by outputting a disconnection signal. Ma
Claims5According to the invention described in the above, the supply power amount monitoring means
Has output the first warning signal,
The power supply to the load group is likely to exceed the predetermined value.
Then, a second warning signal is output, and the load
The shutoff / closing control means receives the second warning signal.
And all loads of the group whose load is being cut off
Output the above shut-off signal to shut off
It is characterized by. Claims6The invention described in
The load shedding / closing control means is externally provided in the load group.
When a maintenance command is input with the specified load,
Forcibly stop the cutoff signal for the specified load
It is characterized by being something. Claims7To
In the invention described above, the load shedding / closing control means is an external
When the initialization command is input from the
Is to return to the first setting
You. [0006] Embodiments of the present invention will be described below.
This will be described with reference to the drawings. FIG. 1 relates to the present invention.
It is an external view which shows the apparatus main body of a demand control apparatus. Same figure
In the figure, reference numeral 1 denotes an apparatus main body.
The case of the supplied power amount monitoring unit 5 is provided on the
A touch panel 8 that constitutes a load rejection / input control unit
Is installed. 8a is a screen of the liquid crystal display element.
You. In the apparatus main body 1, a supply power amount monitoring unit and a load shielding
Electronic circuit part, electric circuit and connection terminal of disconnection / closure control part
Group etc. are housed, and commercial AC
Power supply, integrating wattmeter (WHM), demand meter and each
Various types of load devices are connected. FIG. 2 shows a demand control device according to the present invention.
FIG. 3 is a circuit diagram illustrating an electrical configuration. In the figure,
The power control unit 1 mainly includes a supply power monitoring unit 5, a voltage supply unit
6 and a load shedding / closing control section 7 and the like.
Further, the load shedding / closing control section 7 includes a touch panel 8,
Signal processing unit 9 and a group of load shedding circuits 10 as main parts.
Has been established. 2 is a voltage input terminal.
100V AC voltage is applied to terminal 2
I have. Reference numeral 3 denotes a first breaker, and the above-described voltage input is applied to the primary side.
A lead wire 2a from the terminal 2 is connected, and a lead is connected to the secondary side.
A power supply monitoring unit 5 and a voltage supply unit 6 via a line 3a
Are connected to the respective voltage input terminals 5a and 6a.
You. When the first breaker 3 is turned on, AC voltage is supplied.
The power supply monitoring unit 5 and the voltage supply unit 6
It is. [0008] Reference numeral 4 denotes a second breaker.
The lead wire 2a from the pressure input terminal 2 is connected to the secondary side.
Load of the load shedding / closing control section 7 via the lead wire 4a
Each normally open contact 12 that constitutes a group of shutoff circuits 10 and each common terminal
The child 10b is connected. In addition, lead wire 4a
Is connected to the demand control device via the connection terminal 13.
Each operation panel of various load devices that are controlled to shut off is connected
It has become. When the second breaker 4 is turned on,
The AC voltage is applied to each of the output terminals 10a and
And the common terminal 10b.
It is supplied to the rectifier circuit side. The supply power monitoring unit 5 includes an arithmetic circuit and a signal
Signal input / output circuit, etc. This signal input / output circuit
The signal input terminal 5b receives a signal via the signal transmission line 14a.
Connected to input terminal 14. And this signal input
Terminal 14 is an integrating wattmeter installed by the power company
(Not shown).
The pulsed measurement signal to be input is
Operation circuit via signal input terminal 5b and signal input / output circuit
Has been introduced. Also, the above signal input / output
The signal output terminal 5c of the circuit is connected via a signal transmission line 5d.
The signal processing unit 9 is connected to a signal input terminal 9b. Calculation
The circuit receives the measurement signal from the integrating wattmeter and
The amount of power supplied to the vehicle, that is, the power demand
The demand within the demand time period (predetermined time) is
Depending on when the threshold value is about to be exceeded
A configuration to output various warning signals from the signal input / output circuit
Has become. The voltage supply unit 6 supplies an AC voltage of 100 V to 2
A rectifier circuit for converting to a DC voltage of 4 V, and the converted
Voltage output terminals 6a and 6b for outputting a DC voltage.
You. The voltage output terminal 6b is connected to a signal processor via a lead wire 6d.
Connected to the voltage input terminal 9a of the
Is sent to the power supply side of the signal processing unit 9. Also, voltage output
The terminal 6c is connected to a plurality of (in this embodiment, three
) Common terminals 9d, and a plurality of common terminals 9d
In the embodiment, eight are connected to each of the provided output terminals 9c.
The other end of each relay 11 of the load interrupting circuit group 10
The end is connected via a lead wire 6e. to this
As a result, the DC voltage is applied to each of the relays 11 in the load shedding circuit 10 group.
Supplied. [0011] The load shedding / closing control section 7 controls the load shedding /
Input control condition from touch panel 8 in advance
Set in the processing unit 9 and based on the set contents
Automatically shuts off / throws the power supplied to the load
It is configured to enter. Touch panel 8 is a liquid crystal display
Element screen 8a, display controller and matrix
And an input / output terminal 8b and a signal transmission line 8c.
Connected to the input / output terminal 9e of the signal processing unit 9 bidirectionally.
Have been. In addition, the display controller includes a control unit and a memory.
And the use of this demand control device is started.
And the control unit reads the character data from the memory
Images for inputting load shutoff / loading conditions
Display on the screen. Then, operate the required part of the image
When the operator performs a touch operation, the
Event occurrence signal sent from matrix circuit to control unit
Is done. The control unit transmits the event occurrence signal to the
Load cutoff / input condition information corresponding to the event occurrence signal
And sends it to the control circuit of the signal processing unit 9. That
The transmitted shut-off / closing condition information is stored in a memory of the control circuit.
Is stored, whereby the shut-off / closing condition is set.
It has become so. The signal processing section 9 has a programmable
A sequencer and PLC
It is configured with a microcomputer (microcomputer).
You. The sequence circuit is bidirectionally connected to the microcomputer.
And a plurality of groups (three in this embodiment).
A plurality of groups G1 to G3 (in the present embodiment,
24) The output terminal 9c group and each group G1 to G
3 common terminals 9d. Soshi
Although the sequence circuit is not shown, each group
For each output terminal 9c of the group G1 to G3,
To set the operation timing according to the difference in function
Timer. For example, operate as a hold timer
Adjust the power transmission interruption time (first securing time)
Power transmission time (No.
2), and in these cases,
When the operation time is set by a command signal from the
In both cases, start timed operation by selection control of microcomputer
It has become. The holding time is adjusted by the holding timer.
Electrical equipment and load equipment immediately shut off the supply voltage
Cooling and heating of refrigerators, air conditioners, etc.
It is a cell device. These cooling and heating devices are given a stop command.
Minutes to tens of minutes before restarting
There is. On the other hand, the power transmission time is adjusted by the restart timer.
If the load equipment is stopped for a long time,
If something goes wrong, such as a longer downtime
In air conditioners, etc., where the temperature rises or falls
You. Thus, in the present embodiment, the timer
Each load device can be set for each
It is possible to omit the timer provided in the container. The microcomputer includes a load shedding / closing controller 7.
It controls the entire operation, and is controlled via the signal input terminal 9b.
The output signal from the supplied power monitoring unit 5 is introduced,
Information from the touch panel 8 is guided through the force terminal 9e.
ing. This microcomputer is used for input operation of the touch panel 8
Settings in the work memory and supply power
In response to various alarm signals sent from the
Control the sequence circuit, and turn off the signal (ON
Signal), and becomes a closing signal (OFF signal) at "L" level
A binary signal (see FIGS. 12 to 18) is output. to this
Each of the relays 11 connected between the lead wires 6e
Is turned on by the cutoff signal, while
Turns off, and as a result,
Function or breaker or other function as described below.
Add The load cutoff circuit 10 includes a pair of relays 11 and
A normally open contact 12 corresponding to the output terminal 9c.
It has 24 circuits. These groups of load shedding circuits 10
8 circuits together with the output terminals 9c and 9d of the signal processing unit 9
As a group, a first group G1, a second group
G2 and a third group G3.
Target load devices are grouped or
Shut-off / closing control can be performed individually. relay
11 turns on the normally open contact 12 by ON operation, and
At the time of the F operation, the normally open contact 12 is opened. Each of this normally open
The other end of the contact 12 is connected to each of the output terminals 1 of the load interrupting circuit 10 group.
0a. This group of output terminals 10a
Corresponding to the first to third groups G1 to G3, respectively.
Is provided with a common terminal 10b. Then, each output terminal 10a and the common terminal 10
b, the above-mentioned cooling / heating device, air conditioner and the like are connected.
In addition, electrical equipment and load equipment other than
The terminals 10a, 10a,
Connected between 10b. In addition, the above electrical equipment and load equipment
Of the above, it is necessary to secure the above power transmission interruption time or power transmission time
The connection terminals 13 are provided on each operation panel.
Rectifier circuit that receives AC voltage via
Control circuit and start / stop operation signals.
A start / stop switch, etc.
The terminal of the load breaking circuit 10 is connected to the connection point between the control circuit and the like.
10a and 10b are connected. And the normally open contact 12
When closed, the start / stop switch etc.
When the equipment is stopped and the normally open contact 12 is opened,
In response, the start / stop switch activates the electrical equipment, etc.
It has become so. Electrical equipment and load equipment other than these
Is connected to the control terminal of the circuit breaker
The child 10a, 10b is connected. And the normally open contact 12
When the circuit breaker is closed, the circuit breaker
When the normally open contact 12 is opened, the blocking is performed accordingly.
A breaker is used to supply the electric equipment or the like. FIG. 3 shows the output set value of the warning signal and the current hoax.
6 is a graph showing a relationship with a command. Power supply monitoring unit 5
The operation circuit receives the measurement signal from the integrating wattmeter and
Calculate the amount of power supplied to the side, that is, the power demand (demand)
Process and the demand within the demand time limit is the target value (predetermined value)
When the signal is about to exceed
The warning signal of
Stop the warning signal. Also, the first warning signal is issued.
Demand exceeds the target
If so, output a second warning signal as an emergency alert
Configuration. More specifically, the horizontal axis in FIG.
(T) indicates the calculation time limit of the demand, and is calculated once.
Demand time period is 1800 seconds (30 minutes)
You. In addition, the vertical axis (KW) is a hoax based on the integration of the electric energy.
Shows the value of the command. (A) is a standard demand value
In the demand time period, the power
That is, when demand increases due to electricity,
The command represents a straight line that reaches the target value. Ma
(B) and (C) are actual demand values,
(B) shows the case where the current demand value exceeds the standard demand value.
If (C), the current demand value is below the standard demand value
In each case. (S1) is the target value
It is determined by the value of the contract power with the power company,
Considering the deviation from the detection timing of the electric energy, usually contract
It is set slightly lower than the power value. (S2) is a fixed alarm
This fixed alarm set value (S2) is a target value.
(S1) is set to 80%, for example, the target value (S
If 1) is 300 KW, the fixed alarm set value (S2) is
240 KW. (S3) is an emergency alert set value,
Near the target value (S1) higher than the fixed alarm set value (S2)
Is set to The power amount monitoring unit 5 determines the current state as shown in FIG.
Point P1 when the on-demand demand reaches the fixed alarm set value (S2)
And the value exceeds the standard demand value (A)
Means that the total demand will reach the target value (S1)
At the time point P1, the first first
Outputs a warning signal. Then, the first warning signal is issued.
As a result, the current demand value becomes the standard demand value (A)
, The first warning is given at time P2.
Stop the signal. And then also the current Deman
When the load value exceeds the standard demand value (A), the time point P3
Outputs a first warning signal. On the other hand, as shown in FIG.
Point P0 when the on-demand demand reaches the fixed alarm set value (S2)
And the value is below the standard demand value (A)
Means that the total demand is the target value (S1)
Since there is no possibility of exceeding the value, the first first
No warning signal is output. Furthermore, as shown by the two-dot chain line
In spite of outputting the first warning signal,
Alarm value while the demand exceeds the standard demand (A)
If (S3) is reached, a second warning signal is issued at that time P4.
Output a signal. One demand time period ends
And all the demand calculation values and the first and second warning signals
Cancel and start the next demand period
You. FIG. 4 is displayed on the screen of the touch panel.
FIG. 4 is an explanatory diagram showing a menu. The screen of this touch panel 8
When the demand control device is started to use,
The initial menu of `` fixed mode '' and `` maintenance mode ''
Is displayed. Then touch any display item with your finger
Is displayed, the next screen is displayed by selecting the item.
You. Next, when this display item is touched,
Display and select operations, such as displaying new items
Operation commands and settings by repeating
Has become. There are various setting modes in the initial menu.
This is the mode for setting the program.
In the `` sense mode, '' the maintenance of the load to be controlled is performed.
This is the mode selected when First, the "setting mode" will be described.
The operator touches “Setting mode” on the display screen.
Then, as shown in Fig. 5, various setting items are displayed.
You. The setting items are “Skip control” and “Group setting”.
Set, cutoff speed, step cutoff, emergency cutoff
Input operation using the numeric keypad displayed on the right side of the screen.
It is designed to work. This numeric keypad
Numeric keys for input, arrow keys for
"Cancel" key to delete, to determine the input content
It consists of “Enter” key, etc.
By doing so, desired settings can be made. The first "skip control" is the first to
Electrical equipment and load equipment connected to three groups G1 to G3
Is to determine the respective cutoff control method.
If you select “Yes” in the display, skip cutoff is set.
You. This “skip control” is performed as shown in FIG.
Whether the shutoff operation of one group G1 has been started at time t1
In the process, each load of the group G1 is sequentially cut off.
When the shutoff operation of the second group G2 is started during
At time t2, all remaining loads of the previous group G1 are cut off.
You. Further, each load of the second group G2 is sequentially cut off.
It is said that the breaking operation of the third group G3 is started on the way.
At that time t 3, the remaining full load of the previous second group G2
Cut off. Thus, the first to third groups G1 to G
3 is quickly shut off, so the current demand value is fixed alarm
When the set value is reached and the first warning signal is output continuously
Power supply to the load is efficiently shut off. What
The next "group setting" is the first to third group G1.
To G3. Here, for example,
1 group G1, 2nd group G2, 3rd group G3
It is set in order. The next "blocking speed" is the blocking speed of the first group.
After the shutdown operation is started, the shutdown operation of the next group starts.
The time interval before the start
Can be set arbitrarily within the range of 0 to 120 seconds.
You. This time interval is, as shown in FIG.
Start time t1 of the opening of the group G1 and the opening of the opening of the second group G2.
The time difference T1 from the start time t2, the cutoff of the second group G2 is opened.
The time between the start time t2 and the shutoff start time 3 of the third group G3
It means the difference T2. In the present embodiment, this time
Set intervals T1 and T2 to 25 seconds as standard shutoff speed
are doing. The next “step block” is for another group.
Changes the shutoff speed of the next group during shutoff control.
is there. Normally, it is set so that the cutoff speed after the change will be faster.
It is. For example, as shown in FIG.
If you set the “degree” to the standard speed of 25 seconds,
The “interruption” is defined as a time point t1 at which the first group G1 starts interception.
Time interval T1 between the start of interruption t2 of second group G2
For 10 seconds, the time t2 at which the second group G2 is
The time interval T2 between the start of the interruption of the group G3 and the time 3 is 8 seconds.
Set to. Then, for example, based on the first cutoff signal,
While the first group G1 is shut off, the second shutoff immediately
When a signal is input, intervals of 10 seconds and 8 seconds respectively
To open the second group G2 and the third group G3.
Begun. As a result, the interception time interval between groups is
Power supply to the load side as soon as possible.
Can be turned off. The last “emergency shutoff” is emergency shutoff
When a second warning signal, which is a signal, is input,
All the normally open contacts 12 of the third groups G1 to G3 are immediately closed.
It is to make it. When you set this "emergency shutoff"
Power supply to the load side can be quickly cut off. As described above, when the basic items are set,
Although illustration is omitted, the screen shows “Setting mode”, “Group”
Please select "and the group name
, Are displayed. This group is above
First group G1, second group G2, third group G
3 corresponding to each, the optional setting of each group
It is possible. Where the operator is a group
Is selected, the input signal is displayed on the screen as shown in FIG.
"Control program", "duty timer", and
The "Timer" program mode is displayed. And
Touching any of the displayed items will set the item
Enter mode. The first "input signal" is a supplied power monitoring unit.
5 from the signal output terminal 5c to the signal input terminal of the signal processing unit 9
9b, when transmitting signals to a plurality of terminals (in this embodiment,
Is only one, so only one is shown in FIG. 2)
Is set in advance. Normally,
Since it is sufficient to use one terminal, enter the terminal number.
Force setting. And after setting, via this terminal number
When a signal is input from the supplied power monitoring unit 5,
Executes a predetermined program operation. The next "control program" is shown in FIG.
As described above, "Cyclic cutoff control" and "Priority cutoff"
There are two types of "control".
Select whether to execute the program in advance.
is there. `` Cyclic cutoff control '' includes multiple groups and
And the load in each group
FIG. 14 shows an example. The first
To the third group G1 to G3, the first group G1
At time t1, the second group G2 at t2, the third group
If the loop G3 is sequentially controlled to be interrupted at time t3,
One group G1 at time t4 and the second group G2 at t5
At this time, the third group G3 is sequentially turned on at time t6.
You. The "priority cutoff control" includes a plurality of groups.
About the last blocked group, not the order in which they were blocked
From the start, and then successively launch the previous group
FIG. 15 shows an example. First to third glue
In the groups G1 to G3, when the first group G1 is t1
Point, the second group G2 is at time t2, the third group G3
Are sequentially interrupted at time t3, the third group G3
At time t4, the second group G2 at time t5, and the first group G2.
The loop G1 is sequentially turned on at time t6.
Note that these "cyclic shutoff control" and "priority order"
Is controlled not only between groups but also within each group.
Performing the same shut-off / closing control for multiple loads
Can be. The next “duty timer” is
Use duty timer in Gram mode
It is for setting whether or not. "Dutyta
When “IMA” is selected, the glue is displayed as shown in the display screen of FIG.
Start date and time for each load
The end date is displayed. And input frame of each load
Enter the date and time in the
By operating the timer, the
Thus, power supply can be cut off to save power. This setting
The interruption time based on the fixed time is in units of one hour, and FIG.
3 levels of 10%, 15% and 20% as shown on the display screen
Can be done with For example, if 10% is set, FIG.
As shown in (a), 27 minutes x 2 times out of 60 minutes
Time, 3 minutes x 2 times is the cutoff time, 1 hour total 6 minutes
Power saving. Also, if 15% is set, FIG.
As shown in FIG. 6 (b), 17 minutes × 3 times out of 60 minutes
Entry time, 3 minutes x 3 times becomes cutoff time, 1 hour total 9 minutes
It is possible to save power during the period. Furthermore, if you set 20%,
As shown in FIG. 16 (c), 12 minutes × 4 times out of 60 minutes
Is the injection time, 3 minutes x 4 times is the shut-off time, and is counted in one hour
It is possible to save power for 12 minutes. In addition, the first and second warnings
When a signal is sent, the microcomputer
Stop the timer control and give priority to the normal shutoff control.
Swelling. The next "timer selection" is the program mode
In the mode, any of the above hold timer or restart timer
This is the setting for the cutoff control. These two types
Connected to 24 groups of 24 load shedding circuits
For the full load, as shown in the display screen of FIG.
1800 seconds per group and 8 loads
It is possible to set the time for shutoff and closing. Retainer
When inputting and setting the operation time of the
Time according to the function in the group to which the cooling and heating equipment such as
The settings are made. Also, input the operation time of the restart timer.
When setting, respond to the function in the group to which the air conditioner belongs.
Time setting is performed. First, hold on touch panel 8
When you enter the operating time of the timer,
As shown in FIG. 17 (a), the time is limited by the operation command of the microcomputer.
From time t0 when operation starts to time t1 when operation stops
, The holding time (first securing time) T0 is set. As described above, the operation time is set in the holding timer.
When the first warning signal is input to the microcomputer,
Control of the load according to the duration of the first warning signal
Done. For example, this warning signal is shown in FIG.
When the duration of the holding timer is shorter than the stop time t1
If the duration is equal to or equal to T1
Shutdown control is performed with priority given to the holding time T0 of the holding timer.
That is, upon receiving the first warning signal, the microcomputer
Activating the relay 11 and the holding timer
You. Normally open contact 12 is closed in response to ON operation of relay 11
Then, the shut-off signal is instructed to stop on the operation panel of the load device.
Given as Therefore, the power supplied to the load side
Be cut off. During the operation of the holding timer, the relay 11 is also ON.
Since the operation continues, the hold timer operation stop time t1
Even if the first warning signal stops at a shorter time,
State is continued. Then, as shown in FIG.
The relay 11 is turned off at time t1 when the holding time T0 elapses.
And the normally open contact 12 is opened, and a closing signal is
It is given as a start command. Thus, the load monitoring unit 5 supplies the load
The first warning signal is input to the microcomputer of the shutoff / closing control unit 7.
After a short time interval, the first warning signal stops
Since the holding time T0 is secured by the holding timer,
No power is supplied to the loading equipment during the holding time T0.
Therefore, at least the length of the holding time T0 is saved.
As well as a certain amount of time after stopping and before restarting
Avoid failures of refrigerators and air conditioners that need to be performed.
Can be. Note that the first warning signal is generated as shown in FIG.
As shown in (d), the operation of the holding timer is stopped at time t1.
In case of a long duration T2, the holding time T0 of the holding timer
Is passed, but in this case, the first warning signal is
The relay 11 keeps ON operation ahead of time,
Power is supplied for the duration T2 shown in FIG.
Absent. Accordingly, power is saved by the length of the duration T2.
At the same time, the refrigerator and air conditioner were started without any trouble.
You. Next, the restart timer of the touch panel 8
When the operation time is input, the holding timer is set as shown in FIG.
As shown in (a), the timed operation is performed by the operation command of the microcomputer.
From the time point t0 when starting to the time point t1 when the operation is stopped,
The holding time T0 (second securing time) is set. like this
When the operating time is set in the restart timer,
When the first warning signal is input intermittently, this warning signal
The power transmission control of the load device is performed according to the stop time of the load device. An example
For example, when this warning signal is issued as shown in FIG.
If the stop time T1 is shorter than the time t1 at which the timer stops,
Or if the stop time is equal, this restart timer
The power transmission control gives priority to the holding time T0 on the side. That is, upon receiving the first warning signal,
Since the relay operates the relay 11, the normally open contact 12
Is closed and the shut-off signal is output to the operation panel of the load device as a stop command.
Then, the power supplied to the load side is cut off. This
After the first warning signal stops, the microcomputer
11 is turned off and the restart timer is operated
Let it. Normally open contact 12 according to OFF operation of relay 11
When the load is opened, the operation signal of the load
Given as a motion command. Therefore, power supply to the load side
Is started. During the operation of the restart timer, the relay 11
Since the OFF operation continues, the operation of this restart timer stops.
At a time point shorter than the time point t1, the first warning signal is input again.
Even if the force is applied, the closing state is continued. And FIG.
As shown in (c), at time t1 when the holding time T0 elapses,
When the relay 11 is turned ON and the normally open contact 12 is closed
A shutoff signal is given to the operation panel as a stop command. Thus, the first input to the microcomputer
After the warning signal has been stopped, the first warning is restarted at short intervals.
Even if the notification signal is input, the holding time T0 is determined by the restart timer.
Is maintained, so that the load device side is maintained for the holding time T0.
Power continues to be supplied. Therefore, the first warning signal is input
The power supply was cut off to save power,
After the notification signal stops and power transmission starts, the first warning
When a signal is input, power transmission continues for a certain period of time
Maintains room temperature without prolonged downtime of air conditioners
can do. Note that the above warning signal is
As shown in (d), after the restart timer operation stop time t1
When the restart timer is held when
After the time T0 has elapsed, in this case, the first warning signal
Signal is given priority and the relay 11 continues to operate OFF, and the load side
Is supplied for a duration T2 shown in FIG.
Continue to be. Therefore, the duration T2 is determined by the operation of the air conditioner.
As it continues to roll, changes in room temperature are avoided. Next, "maintenance" will be described.
You. The operator operates the “Maintainer” on the display screen shown in FIG.
Touch operation of “Single”, as shown in FIG.
Maintenance, Initialize, and Initial Settings
Is displayed. Here, touch “Batch maintenance”
Although it is not shown in the illustration, the following screen displays "Maintenance
Select the sense mode? , "Select" and "cancel"
Is displayed. Touch "Select" on this display screen,
Forced, i.e. with or without warning signal
Sends a batch maintenance command to the sequence circuit from the
Will be issued. Then, this command causes the relay 11 to
And the normally open contact 12 is opened. Thus, the electric power of each group G1 to G3
The control voltage between terminals 10a and 10b is output to equipment and load equipment.
Worker is electrocuted to the control voltage
There is no fear. Therefore, separate power supplies for these loads
The inspection can be performed for each part by shutting off. this
At this time, since the breaker 3 remains in the ON state,
Power supply monitoring unit 5, voltage supply unit 6, load shedding / closing control
The voltage is continuously supplied to the unit 7. Therefore, touch panel
Channel 8 can be used, and a microcomputer or sequence circuit
Since the demand control device 1 is in the operating state,
If there is no backup power supply, resetting is not necessary.
Backup power supply 1
Power consumption can be reduced. On the other hand, the "Batch maintenance" display screen
If you touch “Release”, the illustration is omitted.
However, along with “Maintenance mode control release”, three
Numbers 1 to 8 are displayed for each group. This table
Touch operation of any of numbers 1 to 8 among the indicated numbers
And the maintenance mode of the selected number is released,
The relay 11 corresponding to the number is turned on, and the normally open contact 12
Closes. Therefore, it is connected to this load interrupting circuit 10.
Control of the selected load device is started, and the
Perform inspection work on other load equipment without stopping control
It becomes possible. At this point, the above "Batch maintenance
On the display screen of
Display, and touch this "Individual maintenance"
When you make, specify each load of three groups ~
It may be configured to perform the above maintenance operation.
No. Next, the operator operates the table shown in FIG.
Touching "Initialize" on the display screen
The initialize function is selected, and "Initialize"
Reset to default? "And" Return "are displayed. this
The initialize function resets all settings to the default settings.
If you operate "Return", the
The first time all of the entered settings were made at the start of use
Setting. As a result, an unskilled person mistakenly performs the setting operation.
If you get confused in the middle of setting,
If you select, it will be in the state set first, so this setting
It can be entered sequentially from the content. Therefore,
When cancel operation is performed as shown in
Must be reset from the beginning to be deleted
The complicated problem as in the case where there is none is eliminated. The operation
Operates the “Initial setting” on the display screen shown in FIG.
The following screen will display “Initial Settings” and “Save to Initial Settings”.
will you do? "And" MEMORY "are displayed. Here,
By operating the `` Remote '', the maintenance mode
The settings of the mode are initialized. By the way, in the "maintenance mode",
In the illustration, although omitted from the illustration,
`` Alarm display '', `` Alarm output number display '', `` Set value list ''
It has functions such as “display” and “screen erase”. "Interruption
Force compulsion is a function for using load equipment for interlock tests, etc.
Yes, the load specified through the screen is
The normally closed contact 12 of the load shedding circuit 10 is closed by the
Thereby, power transmission to the load is interrupted.
The “display during alarm” is performed by various alarms from the supplied power monitoring unit 5.
When the notification signal is sent out, the microcomputer responds accordingly.
The normally open contact 12 of the load interrupting circuit 10 is closed, and the load device
"Alarming" is displayed on the screen when power transmission to
Things. During this “alarming”, no alarm signal is input.
It is displayed continuously until it becomes empty. The "alarm output number display" is the same as the "alarm output number".
Displaying the `` Alarm output number '' in
Switch operation, which load interrupting circuit 10 operates and the load
Whether it was blocked is indicated by the group number. further,
“Set value list display” displays the current set values input and set.
It is displayed, and when you select it, a list of setting contents
Is displayed so that the operator can
You can check your status. In addition, "screen clear"
Is used to turn off the display screen.
The character `` OFF '' is displayed, and when you touch this, it is displayed
The screen disappears and the initial screen is displayed when you touch the screen
It has become. Next, the operation of the demand control device will be described.
This will be described with reference to the drawings. Where the demand value is
3 (B). This hoax
When the use of the command controller starts, the integrated power meter
The measurement signal is input to the supplied power monitoring unit 5 shown in FIG. this
The arithmetic circuit of the supplied power monitoring unit 5 receives the measurement signal and
The demand within 800 seconds is integrated and shown in the graph of FIG.
As described above, the current demand value (B) is
When (P2) reaches (S2), the first signal is input from the signal input / output circuit.
Output a warning signal. My load shedding / closing controller 6
When the computer receives the first warning signal, it
8 based on the setting contents inputted by
To operate the group of load shedding circuits 10. At this time, the microcomputer immediately shuts off power transmission.
For the load that may be
The relay 11 of the road 10 is turned on. With this,
Since the open contact 12 is closed, its output terminals 10a, 10a
A stop command is given to the load connected to b. Yo
The load or operation stops and the power supply
Is shut off. After this, the current demand value (B) is
When the value falls below the command value (P2), the first warning signal is stopped.
Then, the microcomputer turns off the relay 11. to this
Accordingly, the normally open contact 12 is opened, and a start command is given to the load side.
Power transmission to this load is started and started.
You. As a result, after the first warning signal is output,
Power is saved until the signal stops. Note that the first warning signal is input to the microcomputer.
When the timer is restarted,
If it is a group of loads to be controlled,
Activate the relay 11 of the load shedding circuit 10 according to the loop.
At the same time, one of the timers is timed. example
If the microcomputer is connected to a group such as a refrigerator or air conditioner,
When the group hold timer is activated, the negative
When a stop command is given to the load equipment, the power supplied to this load
Is shut off. And the duration of the first warning signal is
When it is shorter than the holding time set in the holding timer,
When this holding time has elapsed, the normally open contact 12 is opened,
A start command is given to the load side. This allows holding ties
The retention time secured by the machine saves power and freezes
It is possible to restart the machine by avoiding failure of the machine and air conditioner.
You. On the other hand, the first warning signal is input to the microcomputer.
(P1), the group connected to the air conditioner etc.
When operating the start timer, load devices of the group
Is given a stop command and the power supply to the load is cut off.
It is. After the interruption, the time point P2 when the first warning signal stops
Then, power transmission to the load side is started, and the first warning signal is input again.
When the power is input, the power transmission is interrupted at the point P3. Only
Power is transmitted for a certain holding time while the restart timer is running.
As the air conditioner continues to operate, the room temperature increases.
It is maintained without increasing or decreasing in width. Therefore,
Even if the first warning signal is input intermittently, the holding timer and the
And the restart timer operate at the appropriate time,
Even if the machine etc. repeatedly starts and stops, it will not break down
Energy saving is achieved while maintaining the inside at an appropriate temperature. The current demand value (B) is calculated as shown in FIG.
The emergency alert set value changes as indicated by the two-dot chain line
When (S3) is reached, at the time point P4, the supplied power monitoring unit
5 outputs a second warning signal. Load shedding / closing system
When the microcomputer of the control unit 6 receives the second warning signal,
Sequence according to the pre-set emergency shutdown conditions
Control circuit to operate the load interrupting circuit group 10. one
If you want to shut off all power at once,
Power supply to load equipment immediately and shut down immediately.
The hold timer for load equipment with
As a result, power transmission is interrupted after a certain period of time. That's all
Thus, the desired load shedding / closing conditions are set in advance,
Is the demand in 1800 seconds likely to exceed the target value?
If a warning signal is output / stopped depending on whether
The load is turned on / off based on the set conditions
Therefore, fine power saving can be performed. In the above embodiment, the power supply
Negative in response to various warning signals output from the power monitoring unit 5.
The microcomputer of the load interception / injection control unit 6 executes operation control.
As described above, this microcomputer and touch panel
Configuration that uses a personal computer etc. instead of channel
It may be. Also, by connecting to this demand control device
The electrical equipment and load devices that control shutoff are mainly air conditioning and heating devices and
And air conditioners, etc.
And other various load devices.
The output of the warning signal is compared with the standard demand value.
Although output is performed, other methods may be used. example
Total demand based on the current demand increase
How to predict the risk, set multiple thresholds and
Warning signal depending on whether the command has reached the threshold
Can be used. [0050] As described above, according to the present invention, the claims
The invention described in Item 1 is the power supply to the load group within a predetermined time.
The first warning signal is issued when the amount is about to exceed the predetermined value.
Force to cut off the power supply to the load side,
Supply during the power saving control because the first securing time
If power is cut off shortly after power is turned off,
Equipment and load equipment can be properly protected.
effective. As a result, a timer to secure the restart time
There is no need to install on the load side. Also, restart each load.
Operation time can be set collectively, which is convenient.
There is fruit. Further, the invention according to claim 2 is a method for
When the amount of power supplied to the load group is likely to exceed the specified value
The first warning signal output to the power supply is stopped and power is supplied.
After the first warning signal is output,
Since the power supply is continued for the second secured time, power saving control
If power supply to equipment and load equipment is cut off for a long time,
Avoid problems caused by changes in the elephant and environment
There is an effect that can be. As a result, secure downtime
There is no need to install a timer on the load side. Also, each
This is convenient because the load stop time can be set collectively.
This has the effect. Further, the invention described in claim 3 is
When receiving the first warning signal, each grouped negative
The load is blocked based on the preset group start time.
Priority order among each load
Can be reflected, and a negative
Separate the load and the load to be shut
There is an advantage that it can be controlled. Further, according to claim 4
In the invention, the plurality of groups are set to be sequentially cut off.
And the next group starts blocking, the previous group
Since all loads belonging to the loop are cut off,
Value reaches the fixed alarm set value, and the first warning signal follows.
When output, load side divided into multiple groups
There is an advantage that the power supply to the device can be quickly cut off. In addition,
The invention according to claim 5 is a method according to claim 5, wherein after receiving the first warning signal,
When the following first warning signal is received, each group is shut off
Each group is blocked according to the time of another block earlier than the time of
Supply even if the first warning signal is output
If the suppression of the increase in the electric energy is insufficient,
There is an advantage that can be accelerated. In addition, claim 6
The above-mentioned invention is not limited to outputting the first warning signal.
Nevertheless, the power supply to the load group is likely to exceed the specified value.
Receiving the second warning signal output when
Block all loads of the group whose load is being blocked
Therefore, if the supply of electric power is curtailed,
There is an advantage that the power supply amount can be suppressed. In addition,
In the invention described in claim 7, maintenance is performed by designating a load from outside.
When a nonce command is entered,
Since the output of the cutoff signal is forcibly stopped,
The signal eliminates the risk of electric shock for the operator.
There is no need to stop the command control device. as a result,
If the demand controller does not have a backup power supply
The resetting becomes unnecessary, and the demand control device is backed up.
Even if you have a backup power supply, its backup power supply is consumed
There is an advantage that can be reduced. Claim 8
In the described invention, an initialization command is input from outside.
Then, various settings are returned to the first setting.
Various settings due to operation by a person who lacks knowledge of the device
Even if the data becomes confused, you can easily reset it
There is an advantage that can be.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an external view showing a device main body of a demand control device according to an embodiment of the present invention. FIG. 2 is a circuit diagram showing an electrical configuration of the demand control device. FIG. 3 is a graph showing a relationship between an output set value of a warning signal and a current demand. FIG. 4 is a screen of a touch panel on which a main menu is displayed. FIG. 5 is a screen on which basic items of a setting mode are displayed. FIG. 6 is a screen on which various programs to be set for each group are displayed. FIG. 7 is a screen on which a type of a control program is displayed. FIG. 8 is a screen displaying an input frame of a duty timer that can be set for each load of a group. FIG. 9 is a screen displaying a time setting ratio of a duty timer and a load number. FIG. 10 is a screen displaying a timer operation time input frame that can be set for each load. FIG. 11 is a screen on which basic items of a maintenance mode are displayed. FIG. 12 is a timing chart showing skip control between groups. FIG. 13 is a timing chart showing a breaking speed between groups. FIG. 14 is a timing chart showing cyclic control between groups. FIG. 15 is a timing chart showing priority control between groups. FIG. 16 is a timing chart showing duty timer control. FIG. 17 is a timing chart showing shutoff / closing control by a holding timer. FIG. 18 is a timing chart showing shutoff / closing control by a restart timer. [Description of Signs] 1 Apparatus main body, 1a front panel, 2 voltage input terminal, 2a lead wire, 3rd breaker, 3a lead wire, 4th breaker, 4a lead wire, 5 power supply monitoring section, 5a voltage input Terminal, 5b signal input terminal, 5
c signal output terminal, 5d signal transmission line, 6 voltage supply unit, 6a voltage input terminal, 6b voltage output terminal, 6c
Voltage output terminal, 6d lead wire, 6e lead wire, 7
Load shedding / input control section, 8 touch panel, 8a screen, 8b input / output terminal, 8c signal transmission line, 9 signal processing section, 9b signal input terminal, 9c output terminal, 9d common terminal, 9e input / output terminal, 10 load shedding circuit , 10
a output terminal, 10b common terminal, 11 relay, 12
Normally open contact, 13 connection terminal, 14 signal input terminal, 1
4a Signal transmission line, G1 first group, G2 second group, G3 third group.

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-6-197450 (JP, A) JP-A-7-336889 (JP, A) JP-A-50-67942 (JP, A) JP-A-57-1979 106339 (JP, A) (58) Field surveyed (Int. Cl. 7 , DB name) H02J 3/00-5/00

Claims (1)

  1. (57) [Claim 1] When supplying power from a power supply end to a load group consisting of one or more loads, a cutoff signal is output to each load.
    A demand control device that controls the amount of power supplied to the load group at predetermined time intervals by stopping and turning on / off the loads so as not to exceed a predetermined value. Supply power amount monitoring means for outputting a first warning signal when the supplied power amount of the load group is about to exceed the predetermined value, and stopping the first warning signal when the supply power amount of the load group is not about to exceed the predetermined value; In addition, a first securing time to be secured before the closing and then closing can be set, and when the first warning signal is output, the shutoff is performed at least during the first securing time in accordance with the setting. And a load shedding / closing control means for outputting a signal . The load shedding / closing control means includes a plurality of load groups.
    Group that is divided into loops and first cut off for each group
    Set the cutoff time based on the cutoff start time of
    First, the load is first cut off for each load belonging to the group.
    The cutoff time can be set based on the time.
    When the first warning signal is received, each of the loads described above is set according to the setting.
    A demand control device for outputting the cutoff signal so as to cut off the demand. 2. When supplying power from a power supply end to a load group including one or more loads, a cutoff signal is output to each load.
    A demand control device that controls the amount of power supplied to the load group at predetermined time intervals by stopping and turning on / off the loads so as not to exceed a predetermined value. Supply power amount monitoring means for outputting a first warning signal when the supplied power amount of the load group is about to exceed the predetermined value, and stopping the first warning signal when the supply power amount of the load group is not about to exceed the predetermined value; In addition, it is possible to set a second securing time to be secured after the closing until the shutoff, and when the shutoff signal being output based on the first warning signal is stopped, at least according to the setting, the between second securing time, and a load shedding / input control means for stopping said blocking signal, the load shedding / input control means, a plurality of grayed the load group
    Group that is divided into loops and first cut off for each group
    Set the cutoff time based on the cutoff start time of
    First, the load is first cut off for each load belonging to the group.
    The cutoff time can be set based on the time.
    When the first warning signal is received, each of the loads described above is set according to the setting.
    A demand control device for outputting the cutoff signal so as to cut off the demand. 3. The load shedding / closing control means includes:
    If you set to block a number of groups sequentially,
    When a group starts blocking, all members belonging to the previous group
    Output the above shut-off signal to shut off all loads.
    The demand control device according to claim 1 or 2. 4. The load shedding / closing control means includes:
    The time of other interruptions earlier than the time of interruption for each group
    It can be set for each group and receives the first warning signal.
    When the next first warning signal is received after the
    The shut-off signal to shut off each group according to time
    3. The demand system according to claim 1, wherein the demand system is output.
    Control device. 5. The power supply amount monitoring means according to claim 1, wherein:
    Despite outputting a warning signal,
    If the amount of supplied power is about to exceed the predetermined value, a second alarm is issued.
    And it outputs a WARNING signal, the load shedding / input control means, the second warning signal
    All of the groups whose load is being cut off
    The above-mentioned shutoff signal is output to shut off the load of
    3. The demand control device according to claim 1, wherein: 6. The load shedding / closing control means may be an external device.
    The maintenance command by specifying the load in the above load group.
    When input, the cutoff signal for the specified load
    6. The method according to claim 1, wherein
    The demand control device according to any one of the preceding claims. 7. The load shedding / closing control means may be an external device.
    When the initialization command is input from the
    Is returned to the first setting.
    The demand control device according to any one of the above items.
JP37114399A 1999-12-27 1999-12-27 Demand control device Expired - Lifetime JP3375923B2 (en)

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JP4855982B2 (en) * 2007-03-20 2012-01-18 株式会社東芝 Building energy management equipment
JP2010075015A (en) * 2008-09-22 2010-04-02 Mitsubishi Electric Corp Demand control system for household electric appliance
KR101207142B1 (en) * 2012-06-21 2012-11-30 배문수 UPS using Li-polymer battery
JP5940956B2 (en) * 2012-10-18 2016-06-29 未来工業株式会社 Electricity monitoring device
JP6093600B2 (en) * 2013-03-07 2017-03-08 株式会社ミナミテクノ Demand control system, demand control method and program
JP2014236579A (en) * 2013-05-31 2014-12-15 パナソニック デバイスSunx竜野株式会社 Demand controller
WO2015104740A1 (en) * 2014-01-10 2015-07-16 パナソニックIpマネジメント株式会社 Control system and distribution board
KR101821895B1 (en) * 2016-10-28 2018-01-24 주식회사 엘지유플러스 Method and system for controlling power of equipment
KR101877700B1 (en) * 2018-01-17 2018-07-11 주식회사 엘지유플러스 Method and system for controlling power of equipment

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