JPH07193972A - Power interruption system - Google Patents

Abstract

PURPOSE:To use power effectively by interrupting power to preselected electric appliances selectively according to a priority when the total current exceeds a contract current limit. CONSTITUTION:Interruption signals are delivered according to a preset order to the receiver 23 in an adapter 2 and a second circuit breaker 22 functions. The interruption signals are delivered sequentially until the current through the feeder circuit drops below a contract current limit. If the current of feeder circuit does not drop below the contract current limit even after the function of the second circuit breaker, the second circuit breaker 22 is reset. If the current of feeder circuit does not drop below the limit even after the least significant interruption signal is delivered, a first breaker functions. This system realizes efficient use of power without increasing the contract current limit while taking account of temporary increase of power of the electric appliance 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power cutoff system for cutting off power supply when the amount of current used exceeds a contracted current capacity.

[0002]

2. Description of the Related Art In a general household or the like, a pole transformer is 100V.
Alternatively, the voltage stepped down to 200 V is drawn from a drop line attachment point at the eaves of each household, etc., to a distribution board in the room by a drop line, and power is supplied to a light, a refrigerator, an air conditioner and the like.

This distribution board divides the incoming line from the outside into two or more branch circuits, and is equipped with a circuit breaker, an earth leakage breaker, a current limiter and the like.
Of these, the current limiter (S breaker, ampere breaker,
(It is called a limiter, etc.) is installed by the electric power company based on the charge regulation established by the electric power company, and it is automatically activated when an electric appliance fails and shorts out or when a large number of electric appliances are used and a current exceeding the contract amperage flows It has a function to cut off the circuit and stop the power supply. In the following, this current limiter will be simply referred to as a breaker.

[0004]

By the way, in general, electric power consumers rarely use the electric power consumption, that is, the wattage, for each electric appliance or the like. In addition, since the family often uses electric appliances separately in each room at home, it is the current situation that it is left to the breaker to judge whether the total amount of current used exceeds the contract current capacity. Therefore, when the used current amount exceeds the contracted current capacity, power supply to all electric appliances is instantly stopped. However, some electric appliances do not want to stop the power supply, and for example, a refrigerator or the like wants to always supply the power. However, the conventional breaker does not have a function of selectively interrupting the power supply to the electric load.

In addition, when it is predicted that the total amount of current used will exceed the contracted current capacity, electric appliances that may be stopped may be selectively stopped. It is difficult to determine if it is good to shut down an appliance.

In order to solve such a problem, the applicant of the present application, in Japanese Patent Application No. 5-332173, is composed of one breaker and a plurality of adapters to be attached to an electric appliance. When the total current consumption exceeds the contract current capacity, the power supply to each adapter is cut off in order according to the set cutoff priority, so that the total current consumption falls below the contract current capacity. We have proposed a new power cutoff system.

However, in the above system, not all the electric appliances to which the adapters are attached are always used when the interruption of the power supply to each adapter is started according to the interruption priority. Therefore, even if the power is cut off by the adapter, the total current consumption may not change. If the adapter in which the electric appliance is not used is shut off according to the shut-off priority, the consumer must restore the adapter later, which is inconvenient.

The present invention has been made in view of the above problems, and an object of the present invention is to avoid increasing the contract current capacity of a breaker for the purpose of temporarily increasing the amount of electric power used, and to minimize the current capacity. When a contract is made and the total amount of current used exceeds the contracted current capacity, the power supply to the appliances to which the adapters are attached in advance is cut off in order according to the preset interruption priority, while the appliances to which the adapters are attached If it is not used, the power can be automatically returned to the state in which power can be supplied, the total amount of current used can be kept below the contract current capacity, and power can be used efficiently, and power can be supplied to electric appliances. It is an object of the present invention to provide a power cutoff system capable of preventing a load on an electric appliance due to a sudden stop in advance.

[0009]

In order to achieve the above object, in a first aspect of the present invention, a first circuit breaker for interrupting a power supply circuit and a current capacity detection for detecting a current value of the power supply circuit. Device, a contracting current capacity, storage means for storing information for outputting a plurality of interruption signals and return signals, a transmission device for outputting the interruption signals and the return signals, and detection by the current capacity detector A first control for controlling the operation of the transmitter and the first circuit breaker based on the stored current value, the contracted current capacity stored in the storage means, and information for outputting a cutoff signal and a return signal. A breaker having means, a second breaker for cutting off power supply to an electric load, a storage means for storing information for identifying a cutoff signal and a return signal from the breaker, the cutoff signal and A plurality of receiving devices for receiving the return signal and a second control means for controlling the operation of the second circuit breaker when the signal received by the receiving device is identified as a cutoff signal or a return signal. The power cutoff system is configured from the adapter, and the cutoff signal output according to the set output order is received by the receiver of the adapter and the second circuit breaker is activated. As a result, the current value of the power supply circuit is the contract current capacity. When the current value of the power supply circuit does not decrease as a result of the operation of the second circuit breaker as a result of the second circuit breaker being sequentially output until the following, the second circuit breaker that has been operated is restored, When the current value of the power supply circuit does not fall below the contract current capacity as a result of outputting the cutoff signal having the lowest output order, the first circuit breaker is activated. Further, the cutoff signal and the return signal are transmitted through the indoor wiring by changing the power supply voltage level at regular intervals.

Further, as a second aspect, a first circuit breaker for cutting off the power supply circuit, a current capacity detector for detecting a current value of the power supply circuit, a contract current capacity and a plurality of cutoff signals for outputting. First storage means for storing information, a first transmitting device for outputting the cutoff signal, a first receiving device for receiving a signal from the adapter, and the current capacity detector. A breaker having a first control means for controlling the operation of the transmitter and the first circuit breaker based on a current value and information for outputting the cutoff signal stored in the storage means; A second circuit breaker for cutting off the power supply to the load; and a second storage means for storing information for identifying a cutoff signal from the breaker,
A second receiving device that receives the cutoff signal, a second transmitting device that transmits a cutoff ignoring signal to the breaker, an electric load use detector, a signal received by the second receiving device, and the second A second control circuit for controlling the operation of the second circuit breaker and the second transmission device based on the information for identifying the cutoff signal stored in the storage means and the information from the electric load use detector. And a plurality of adapters having a control means, which constitutes a power supply cutoff system, and the second reception device receives a cutoff signal output according to a set output order, and a result that the second breaker operates. When a cutoff signal is sequentially output until the current value of the power supply circuit becomes less than or equal to the contracted current capacity and the second breaker operates, and the electric load use detector detects that the electric load is not used. Is the second When the current value of the power feeding circuit does not fall below the contract current capacity as a result of transmitting the interruption disregard signal from the second transmitter without operating the breaker and outputting the interruption signal having the lowest output order The first circuit breaker was activated. Further, the cutoff signal and the cutoff neglected signal are transmitted and received wirelessly or as a harmonic signal through indoor wiring.

[0011]

[Function] When the total current amount detected by the current capacity detector exceeds the contract current capacity, the power supply to the electric appliances to which the adapter is attached in advance is interrupted in order according to the preset interruption priority order. However, if the electrical equipment to which the adapter was attached was not used, the once interrupted adapter was automatically returned to the state in which power could be supplied, or the electrical equipment to which the adapter was attached was not used. If you do not shut off the adapter. If the current value does not fall below the contracted current capacity even if the power supply is cut off by the adapter, the breaker cuts off the power supply to all distribution systems.

[0012]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a diagram schematically showing the entire power cutoff system according to the present invention. Electric power supplied from the outside by the service line 5 is first led to the breaker 1 and then divided into a plurality of branch circuits, and the indoor wiring 4 is used to connect the electric appliances 6a, 6b, 6 through the outlet 3 of each room.
c, 6d, 6e. In FIG. 1, the refrigerator 6a and the water purifier 6b that the consumer wants to be constantly energized
For the air conditioner 6c, the hair dryer 6d, and the microwave oven 6e, the adapter 2 is attached to the outlet 3 and power is supplied via both.

In this system, a predetermined number N of adapters 2 are introduced to the breaker 1 as a set, and these adapters 2 are each provided with a predetermined ID # at the time of shipment. Has been done. Here, 3 adapters 2 for 1 breaker
Is 1 set, the ID # of the adapter 2 attached to the air conditioner 6c is 1, the ID # of the adapter 2 attached to the hair dryer 6d is 2, and the ID # of the adapter 2 attached to the microwave oven 6e is It is 3.

Further, when this system is introduced, the consumer sets the interruption priority order for each ID # of the adapter 2 by designating the ID # by a setting device (not shown) provided in the breaker 1. . In this case, multiple IDs
It is also possible to set the same cutoff priority for #, in which case the power supply of the adapters set for the same cutoff priority will be cut off at the same time (for example, ID
The blocking priority of the adapters of # 1 and ID # 2 is set to 1 and I
(The blocking priority of D # 3 is 2.)

Here, the shut-off priority of the adapter of ID # 2 attached to the hair dryer 6d is 1, and the air conditioner 6 is
The interruption priority order of the adapter of ID # 1 attached to c is set to 2, and the interruption priority order of the adapter of ID # 3 attached to the microwave oven 6e is set to 3.

The outline of the power supply cutoff system according to the present invention will be described below. A consumer attaches the adapter 2 to the air conditioner 6c, the hair dryer 6d, and the microwave oven 6e, which has no problem even if the power supply is suddenly cut off. By setting the priority order, when the total current consumption of the entire home exceeds the contract current capacity, the cutoff mechanism built into the adapter 2 cuts off the power supply to the electric appliances which are supplied with power via the adapter 2. Shut down according to rank. That is, first, the power supply to the hair dryer 6d having the cutoff priority of 1 is cut off, and if the total amount of current used still does not fall below the contract current capacity, the power supply to the air conditioner 6c having the cutoff priority of 2 is cut off. Furthermore, if the total amount of current used still does not fall below the contracted current capacity, the power supply to the microwave oven 6e having a cutoff priority of 3 is cut off.

In this case, if it is assumed that only the air conditioner 6c whose cutoff priority is 2 is not used,
Even if the power supply to the air conditioner 6c is cut off, the total current consumption does not change from the time when the power supply to the hair dryer 6d is cut off. Therefore, in such a case, the shutoff state of the adapter of the air conditioner 6c is restored (first embodiment), or the shutoff is not performed by the adapter (second embodiment).

If the total current consumption does not fall below the contracted current capacity even if the adapter with the lowest shutdown priority is shut down, the breaker 1 shuts off the power supply to all distribution systems. ing. When it is desired to change the cutoff priority later, the breaker 1 can be set or changed at any time.

Next, the first of the power supply interruption system according to the present invention
The configurations of the breaker 1 and the adapter 2 constituting the embodiment of FIG. 2 will be described with reference to FIGS. 2 and 3.

FIG. 2 shows the configuration of the breaker 1, in which electric power supplied from the service wire outside the circuit breaker 1, the circuit breaker 12, the current capacity detector 13, and the transmitter 1 are supplied.
5, the power is transmitted from the power transmission terminal 14 to the outlet of each room through the indoor wiring 4. The ROM 18 corresponds to the N ID # s that are predetermined at the time of shipment and corresponds to the adapter 2
N signals for operating the circuit breaker 22 (see FIG. 3) provided in the circuit (hereinafter referred to as “interruption signal”) and N signals for recovering the circuit breaker 22 to make it possible to supply power (hereinafter referred to as “signal”). The information for outputting the "return signal" is stored. In this embodiment, since the ID # is 1 to 3, the information for outputting the three cutoff signals and the three return signals is stored. Remembered On the other hand, ID on the setting device 20
The interruption priority order set for # is stored in the RAM 31 as information of the interruption signal output order corresponding to ID #. The CPU 16 controls the controller 17 based on the current value detected by the current capacity detector 13, the contract current capacity stored in the ROM 18, the information about the three cutoff signals and the return signal, and the information about the cutoff signal output order stored in the RAM 31.
The operation of the circuit breaker 12 and the transmitter 15 is controlled via the. The transmitter 15 transmits the cutoff signal and the return signal to the adapter 2 through the indoor wiring 4. Also, the clock 19
Is used to synchronize the operation timing of the CPU 16, and gives the CPU 16 a timepiece function as necessary.

FIG. 3 shows the configuration of the adapter 2, and the electric power supplied from the indoor wiring 4 is an outlet (not shown).
To the power receiving terminal 21 of the adapter 2, and the receiving device 23,
It is supplied from the power supply terminal 24 to the electric appliance 6 via the circuit breaker 22. At the time of shipment, the ROM 28 stores information for identifying the cutoff signal and the return signal of the adapter. CPU 26 is a signal received by the receiving device 23 and ROM
Based on the information for identifying the cutoff signal and the return signal stored in 28, the circuit breaker 2 via the controller 27.
Control the operation of 2. The return switch 29 is provided to manually return the adapter 2 to the original power-supplyable state when the breaker 22 operates. The setting device 20 provided on the breaker side for setting the interruption priority may be provided on the adapter side.

Next, communication means between the breaker 1 and the adapter 2 will be described with reference to FIGS. 4 to 6.

As a method of transmitting the cutoff signal and the return signal from the breaker 1 to the adapter 2, this embodiment employs a method of transmitting and receiving the cutoff signal and the return signal by changing the voltage level by using indoor wiring. . That is, it is a method in which the voltage level is changed within a range where there is no problem in using the electric appliance, and the change pattern is transmitted and received as a signal.

FIG. 4 shows an example of a signal pattern created by changing the voltage level, and 100 V to 90 V is adopted as an example of the voltage level changing width. This is because it is known that current electric appliances have no problem with a short-time voltage drop of up to about 90V.

In FIG. 4, the receiving device 23 of the adapter 2
Based on the change in the voltage level received by the CPU 26 (see FIG.
4) recognizes 100V as 1 and 90V as 0, the signal pattern shown in FIG. 4 becomes (10110100).
10) is recognized. Therefore, in the CPU 26, in the signal flow of (1011010010), the first 6 bits (101101) are set as a start bit, and when this signal is recognized, it is set to be recognized as a cutoff signal or a return signal. , Of the subsequent 4 bits (0010), the first 3 bits (00
1) may be set as the ID # so that if the last bit is 0, it is set to be recognized as a cutoff signal, and if the last bit is 1, it is set to be recognized as a return signal. . For example, if a signal of (1011010100) is received, 3 bits following the start bit (101101)
Bit (010) becomes ID # and binary calculation yields I
It means D # 2. Further, since the last bit is 0, it can be seen that it is a cutoff signal.

FIG. 5 shows a transmitter 1 provided on the breaker 1.
5 shows the configuration of FIG. 5, and the generation of the cutoff signal and the return signal described above will be described with reference to FIG.

The wiring connected from the power source side is the transmitter 15.
It is divided into 2 circuits A and B, and the circuit A is CMOS15a
Circuit B is connected to the CMOS 15b. C
A buffer IC 15 is provided in the MOS 15a and the CMOS 15b.
A voltage of about 5 V is applied to the circuit A or circuit B via d via a control signal from the CPU 16 to switch the flow of current into the circuit A or the circuit B. That is, 1 from the power supply
If a voltage of 00V is supplied, the CMOS
When a voltage of 5V is applied to 15a to make it conductive and a current flows in the circuit A, a voltage of 100V is taken out to the terminal-. On the other hand, when a voltage of 5V is applied to the CMOS 15b to make it conductive and a current flows through the circuit B, the voltage is reduced by the transformer 15c and a voltage of 90V is taken out to the terminal-. The voltage extracted at the terminal − is supplied to the adapter 2 via the power transmission terminal 14 (see FIG. 2).

As described above, by switching the circuit A and the circuit B at a constant timing by the CPU 16, only the voltage level can be changed without changing the frequency to generate the cutoff signal and the return signal patterns. In this case, the signal switching timing is from 100 msec to 200
It is about msec, and the clock 19 has a function of synchronizing the operation timing of the CPU 16. ROM1
Reference numeral 8 stores in advance information for outputting N interruption signals and return signals corresponding to the N attachable adapters that are initially set for shipment to the breaker 1. Then, the CPU 16 causes the transmitting device 15 to output the cutoff signal based on the information for outputting the cutoff signal stored in the ROM 18 and the output order of the cutoff signal set by the setting device 20 and stored in the RAM 31. Also, RO
The transmitter 15 outputs the return signal based on the information for outputting the return signal stored in the M18 and the current value detected by the current capacity detector 13 (see FIG. 2).

The method of using the indoor wiring to change the voltage level within a range where there is no problem in using the electric appliance and transmitting the change pattern as a signal is not limited to the above method or apparatus.

FIG. 6 is a diagram for explaining a method of receiving the cutoff signal and the return signal in the adapter 2.

In the receiving device 23 provided in the adapter 2, the voltage determination IC 23a used in the AC tester measures the voltage value at a constant timing, for example, at intervals of 25 msec, and the data is transmitted to the CPU 26. CPU2
6, the voltage value is 100 V based on the data.
If so, the flag is set to 1, and if the voltage value is 90V, the flag is set to 0, and the result is sequentially assigned to, for example, 32 bits, and the change in voltage is calculated every 100 msec based on the data. Further, the calculation result is compared with the information for identifying the cutoff signal or the return signal stored in the ROM 28, and when it is judged as the cutoff signal, the circuit breaker 22
(See FIG. 3) is activated, and when it is determined that the signal is a return signal, the circuit breaker 22 (see FIG. 3) that has been interrupted is returned to a state in which power can be supplied. The clock 30 has a function of synchronizing the operation timing of the CPU 26.

Next, the operation of the power cutoff system according to the present invention will be described with reference to FIG.

The customer uses each I of the adapter 2 attached using the setting device 20 of the breaker 1 when operating this system.
Set the blocking priority for D # (F-1). The set cutoff priority is RA as the output order of cutoff signals.
It is stored in M31. Current capacity detector 13 of breaker 1
Always detects the current value flowing through the indoor wiring, and the detected data is transmitted to the CPU 16 (F-2). CPU16
Compares the contract current capacity stored in the ROM 18 with the current value detected by the current capacity detector 13 (F-3),
When the current value exceeds the contract current capacity, the current value is stored in the RAM 31 (F-4), and then the ID # with the highest cutoff priority (the hair dryer 6d in the example shown in FIG. 1 is used. A blocking signal corresponding to the ID # 2) of the adapter connected to is transmitted from the transmitting device 15 to the adapter 2 (F-5). When the cutoff signal is transmitted, the receiving device 23 of the adapter 2 receives the cutoff signal, and this information is transmitted to the CPU 26. The CPU 26 compares this signal with the information for identifying the interruption signal stored in the ROM 28, and if it judges that it is the interruption signal, the controller 2
Activating the circuit breaker 22 via 7.

When the electric appliance (the hair dryer 6d in the example shown in FIG. 1) to which the adapter 2 having the interruption priority 1 is attached is in use, the total current consumption is reduced by the operation of the circuit breaker 22 of the adapter 2. However, if the electric appliance to which the adapter 2 having the disconnection priority 1 is attached is not used, the total current consumption does not decrease even if the circuit breaker 22 operates.

Therefore, the CPU 16 again causes the current capacity detector 1 to
The current value detected in step 3 is compared with the current value stored in step (F-4) (F-6), and if the current value is not decreased, the shut off adapter 2 is attached to the electric appliance. When it is determined that there is no such error, a return signal is output from the transmitter 15 (F-7). When the transmitted return signal is received by the receiving device 23 of the adapter 2 and this information is transmitted to the CPU 26, the CPU 26 compares this signal with the information for identifying the return signal stored in the ROM 28, When it is determined that the signal is a return signal, the controller 2
The power cut-off state in the circuit breaker 22 is released via 7.
After that, the CPU 16 causes the transmission device 15 to output a cutoff signal having the next cutoff priority (F-11).

On the other hand, when the current value detected in step (F-6) is smaller than the current value stored in step (F-4), the current value detected by the current capacity detector 13 is changed again. It is determined whether the contract current capacity is exceeded (F-8). If it is not exceeded, the process returns to step (F-2) to continue the power supply as it is, and the current capacity detector 13 continues to monitor the current value.

If the current value detected in step (F-8) still exceeds the contract current capacity, it is confirmed whether or not the interrupting priority of the interrupted ID # is the lowest (F-9). If it is not the lowest, the current value is stored in the RAM 31 (F-10), the interruption signal of the next interruption priority is output (F-11), and the process returns to the step (F-6). In this way, the interruption by the adapter 2 is repeated in the order of the interruption priority order until the current value detected by the current capacity detector 13 becomes equal to or less than the contract current capacity.

If the interrupting priority of the interrupted ID # is still the lowest, but the contract current capacity is still exceeded, the CPU 16 of the breaker 1 operates the circuit breaker 12 via the controller 17 to interrupt the power supply of all systems. (F-12).

When the power supply to the adapter 2 being used is cut off, the consumer must restore the adapter 2. Therefore, the circuit breaker 22 is provided with a return switch 29. When the power supply is cut off by the adapter 2, the consumer turns on the return switch 29 of the adapter 2. When power supply to the adapter 2 is cut off, the adapter 2 side uses an LED or the like to warn the consumer of the cutoff, and the breaker 1
A display unit may be provided on the side to display the ID # of the blocked adapter, which is convenient for a consumer to restore the adapter.

In the above-described embodiment, as a method of transmitting a signal from the breaker 1 to the adapter 2, a method of changing the voltage level by using indoor wiring is adopted. Therefore, the transmission from the breaker 1 to the adapter 2 is performed. Only the direction is possible, and the signal cannot be transmitted from the adapter 2 to the breaker 1. However, if another transmission method, for example, a wireless transmission method is adopted, two-way communication becomes possible, and when the adapter 2 that has transmitted the cutoff signal does not use an electric appliance, the adapter 2 cuts off each time. It is possible to maintain a state in which power can be supplied without repeating the operation of and return.

Therefore, as a second embodiment of the present invention, an embodiment in which a wireless signal transmission method is adopted will be described below with reference to FIG.
And it demonstrates with reference to FIG.

The same reference numerals as those in FIGS. 2 and 3 denote the same components, and the description thereof will be omitted.

FIG. 8 shows the structure of the breaker 1, and C
It has a PU 16, a circuit breaker 12, and a current capacity detector 13, and C
The PU 16 includes a ROM 18, a RAM 31, a setting device 20,
The transmitter 40 and the receiver 41 are connected. ROM
18 stores information for outputting N cutoff signals and contract current capacity corresponding to the ID # of each of N adapters determined in advance at the time of shipment. Further, the RAM 31 stores the output order of the cutoff signals corresponding to the ID # set by the setting device 20. Transmitter 4
0 and the receiver 41 both use wireless means, and transmit and receive signals to and from the adapter 2 through the antenna 42. The setting device 20 may be provided on the adapter 2 side.

FIG. 9 shows the configuration of the adapter 2, which is C
It has a PU 26 and a circuit breaker 22, and the CPU 26 has a ROM 2
8, transmitter 75, receiver 76, instrument usage detector 68
Are connected. The appliance usage detector 68 communicates information to the CPU 26 whether the appliance is currently being used. The ROM 28 stores information for identifying that the signal received by the receiving device 76 is the cutoff signal of its own adapter 2. Transmitting device 75 and receiving device 76
All use wireless means, and transmit and receive signals to and from the breaker 1 through the antenna 77.

When the CPU 16 of the breaker 1 detects that the current value detected by the current capacity detector 13 exceeds the contract current capacity stored in the ROM 18, it sends a cutoff signal from the transmitter 40 to the adapter 2 according to the cutoff priority. Send. In the adapter 2, the cutoff signal transmitted from the breaker 1 is received by the receiving device 76, and the information is transmitted to the CPU 26. When the CPU 26 determines from the information from the appliance usage detector 68 that the electric appliance attached to the adapter 2 is in use, it activates the circuit breaker 22 to cut off the power supply. On the other hand, when the CPU 26 determines that the electric device to which the adapter 2 is attached is not used, the circuit breaker 22 is not operated, and the transmitter 75 transmits a signal notifying that the circuit has not been cut off (hereinafter referred to as a “cutoff ignore signal”). Is sent to the breaker 1. When the receiving device 41 of the breaker 1 which has received the interruption disregard signal transmits the information to the CPU 16, the CPU 16 stores the ID # of the adapter 2 which has not been intercepted in the RAM 31, and the adapter of the ID # corresponding to the next interruption priority. 2 sends a cutoff signal.

As described above, when bidirectional communication is possible, the adapter 2 can be supplied with power when the electric appliance is not used without performing the operation for returning the adapter 2 from the breaker 1 side. Can be kept in good condition.

Further, in the second embodiment, the transmitter 40
However, the present invention is not limited to this, and the transmitting device 40 may be connected to indoor wiring and a harmonic signal may be placed there.
In that case, the transmission / reception device of each of the breaker 1 and the adapter 2 is provided with a waveform analysis calculation function and the like to exchange signals. For example, a signal of several kinds of frequencies of 1 kHz or higher is placed on the indoor wiring, frequency analysis is performed on the receiving side that receives the signal, and the meaning of the signal is analyzed based on the predetermined corresponding conditions. Then, a method of performing a predetermined operation can be implemented. When this method is used, the voltage fluctuates, but it does not fluctuate so much as to impair the actual efficiency. Since the frequency used is high and is in the so-called noise range, the influence on the instrument is very small.

In the above two embodiments, the adapter 2 is described as an independent device attached to an outlet, but the electric appliance itself may have the function of this adapter.

[0050]

As described above, according to the present invention,
When the total current consumption exceeds the contract current capacity, the power supply to the preselected electric appliances is selectively cut off according to the cutoff priority, and the power supply to the unused electric appliances is not cut off. It has the effect described in. (1) Power can be used efficiently without increasing the contract current capacity in preparation for temporary increase in the amount of power used,
Electricity costs are low. (2) It is possible to prevent unnecessary power outages and prevent in advance the burden on electric appliances that would otherwise be suddenly cut off from power supply to electric appliances that should be energized. The manufacturing cost of the adapter can be lower than that of providing a constant function. (3) Since the power supply to the adapter is not cut off by an electric appliance that is not in use, it is possible to save the trouble of resetting the cutoff. (4) If bidirectional communication is possible between the breaker and the adapter as the communication means, the number of operations of the return cutoff in the adapter can be reduced and the life of the adapter can be extended.

[Brief description of drawings]

FIG. 1 is a diagram schematically showing an entire power cutoff system according to the present invention.

FIG. 2 is a diagram showing an example of the configuration of a breaker that constitutes the first embodiment of the power supply interruption system according to the present invention.

FIG. 3 is a diagram showing an example of a configuration of an adapter which constitutes the first embodiment of the power supply cutoff system according to the present invention.

FIG. 4 is a diagram showing an example of a signal pattern generated by a change in voltage.

FIG. 5 is a diagram showing an example of a configuration of a transmission device which constitutes a first embodiment of a power supply cutoff system according to the present invention.

FIG. 6 is a diagram showing an example of a configuration of a receiving device which constitutes a first embodiment of the power supply cutoff system according to the present invention.

FIG. 7 is a flowchart illustrating an operation of the power supply cutoff system according to the present invention.

FIG. 8 is a diagram showing an example of the configuration of a breaker that constitutes a second embodiment of the power supply interruption system according to the present invention.

FIG. 9 is a diagram showing an example of a configuration of an adapter which constitutes a second embodiment of the power supply interruption system according to the present invention.

[Explanation of symbols]

 1 Breaker 2 Adapter 3 Outlet 4 Indoor wiring 5 Service wire 6 Electric equipment 12, 22 Breaker 13 Current capacity detector 15 Transmitter 16, 26 CPU 17, 27 Controller 18, 28 ROM 19, 30 Clock 20 Setter 23 Receiver 31 RAM 40,75 transmitter 41,76 receiver

 ─────────────────────────────────────────────────── --- Continuation of the front page (72) Inventor Tokushige Masuko 2174 C-608, Koyo-cho, Tokorozawa, Saitama Prefecture (72) Inventor Mitsunori Komaki 2-4-17-705 Sarue, Koto-ku, Tokyo (72) Inventor Nakayama Kanako 7-39-10 Koganehara, Matsudo City, Chiba Prefecture

Claims (5)

[Claims] 1. A first circuit breaker for interrupting a power supply circuit, a current capacity detector for detecting a current value of the power supply circuit, a contract current capacity, and information for outputting a disconnection signal and a return signal are stored. The first storage means, the transmitter that outputs the cutoff signal and the return signal, the current value detected by the current capacity detector, the contract current capacity and the cutoff signal and the return signal stored in the storage means. A breaker having a first control means for controlling the operations of the transmitter and the first circuit breaker based on information for outputting the second circuit breaker, and a second circuit breaker for cutting off power supply to an electric load. Second storage means for storing information for identifying a cutoff signal and a return signal from the breaker, a receiving device for receiving the cutoff signal and the return signal, and a signal received by the receiving device for cutoff Belief Or a plurality of adapters having a second control means for controlling the operation of the second circuit breaker when it is identified as a return signal, and the cutoff signal output according to a preset output order As a result of the second circuit breaker operating as a result of reception by the receiving device of the adapter, the interrupt signal is sequentially output until the current value of the power supply circuit becomes equal to or less than the contract current capacity, and the result of the second circuit breaker operating When the current value of the power supply circuit does not decrease from that before the operation, the operated second circuit breaker is restored, and as a result of the cutoff signal having the lowest output order, the current value of the power supply circuit is the contract current. A power supply interruption system characterized in that the first circuit breaker is activated when the capacity does not fall below the capacity. 2. The power cutoff system according to claim 1, wherein the cutoff signal and the return signal are signals which are generated by changing a power supply voltage level at regular intervals and are transmitted through an indoor wiring. . 3. A first circuit breaker for cutting off the power supply circuit, a current capacity detector for detecting a current value of the power supply circuit, a contract current capacity and information for outputting a cutoff signal are stored. No. 1 storage unit, a first transmission device that outputs the cutoff signal, a first reception device that receives a signal from an adapter, a current value detected by the current capacity detector, and the storage unit that stores the current value. The transmitting device and the first device based on the contracted current capacity and the information for outputting the cutoff signal.
A circuit breaker having a first control means for controlling the operation of the circuit breaker, a second circuit breaker for cutting off the power supply to the electric load, and information for identifying a breaker signal from the breaker. Second storage means, a second receiving device that receives the cutoff signal, and a second transmission device that transmits a cutoff ignore signal to the breaker.
Of the transmission device, an electric load use detector for detecting the use state of the electric load, information for identifying the signal received by the second reception device and the cutoff signal stored in the second storage means. And a plurality of adapters having second control means for controlling the operation of the second circuit breaker and the second transmitting device based on the information from the electric load use detector, and preset. The interruption signal output according to the output order is received by the second receiving device, and the interruption signal is sequentially output until the current value of the power feeding circuit becomes equal to or less than the contract current capacity as a result of the operation of the second circuit breaker. Even when the second receiving device receives the cutoff signal, when the electric load use detector detects that the electric load is not used, the second breaker is not operated and the cutoff ignoring signal is output. 2 transmitters When the current value of the power supply circuit does not fall below the contract current capacity as a result of outputting the cutoff signal having the lowest output order, the first breaker is activated. Power cutoff system. 4. The power cutoff system according to claim 3, wherein the cutoff signal and the cutoff neglect signal are transmitted and received wirelessly. 5. The power cutoff system according to claim 3, wherein the cutoff signal and the cutoff neglect signal are composed of harmonic signals and are transmitted and received through indoor wiring.