JP2003244842A - Device for preventing interruption of commercial power - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent power failures caused by a trip of a breaker because of heavy loads of electrical apparatus. <P>SOLUTION: Allowed current values of a main breaker 5 and branch breakers 2, 3, 4 are preset by a power consumption controlling board 15. If the currents of the breakers become equal to or exceed each preset value, a conduction/ interruption control plug socket 36 of low priority on a conduction/interruption control plug socket board 30 is interrupted by radio and then, a conduction/ interruption control plug socket 37 is interrupted. If the currents become lower than the preset values, the sockets are conducted in order of higher priorities. When an interruption/conduction automatic/manual changeover switch 27 is set to manual operation, interruption is maintained until a conduction-restoring switch 42 is operated. When this conduction-restoring switch 42 is operated, power interruption can be prevented by conducting the sockets of higher priority, while checking each current. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to commercial power interruption prevention control. 2. Description of the Related Art In order to cover an increase in load, a power supply company works to increase the current capacity, or switches the load according to human judgment to operate another load. [0003] In recent years, there has been no power outage by electric power companies, and there has been notice in advance of construction and the like. Because it is not economically possible to increase the current capacity so much, if you try to simultaneously supply power to multiple devices that use electric heat, such as heating, an overcurrent will occur immediately, the breaker will be cut off, and a power failure will occur. The purpose is to solve the problem by assigning priorities to the power outlets of a plurality of devices by setting values and controlling the energization or cutoff of each. According to the present invention, the current of a main breaker or a branch breaker is measured in real time, taken into a computer and prioritized to each load within a preset current value. The problem is solved by controlling energization or cutoff. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A power supply line immediately after a main breaker and a plurality of branch breakers of a switchboard is provided with a magnetic core provided with a coil, and a current is detected by electromagnetic induction. The value set within the allowable current value of the breaker and the breaker of each branch is compared with each current actually flowing, and priority is given to a plurality of loads of each power supply line so as not to exceed the set value. According to the supply power conduction,
The shutoff is controlled so that neither the main breaker nor the branch breakers are shut off within an acceptable range. FIG. 1 is a diagram of a general household in which commercial electric power is routed from power lines 6 and 7 of a switchboard 1 through main breakers 5, breakers 2, 3 and 4 to respective power outlets. The current flowing through the main breaker is
The detected current is sent to the 16 detected current / voltage conversion amplifiers 1 of the 15 power control boards, and the currents flowing through the breakers of the 2, 3, and 4 branches are detected at 11, 10, and 9 and the induced currents detected at 19 and 18 are. , 17 are sent to the 23 CPUs in real time. [0007] The current flowing in each branch breaker is detected, and if the current is equal to or exceeds the set value of the current, the CPU disconnects the outlet 36 of the 30 low-priority power supply cutoff control outlet board from the CPU. 24 DTMF for
Sends a signal to the modulator to perform DTMF demodulation and load outlet control of 32. When the current is equal to or exceeds the set value of the main breaker, the CPU cuts off the current of 36 outlets from the CPU in the same way. If the current that is cut off by the control relay 1 and the current flowing through each branch and the main breaker is equal to or exceeds the set value, the CPU cuts off the power supply cut-off socket 37 or connects to the power supply line of the breakers 2 and 3. The outlets of another 30 power supply cutoff control outlet boards are cut off. The current flowing through each of the branch breakers is detected, and if the set value of each current is lower than the set value, 2
If the cut-off energization automatic manual changeover switch of 7 is automatic, power is automatically supplied from the outlet with high priority power supply cut-off control. Prevents power outages by detecting the current of each power supply line in order from the highest power supply cutoff control outlet to prevent power outages.Also, although an antenna was used in wireless communication, it is possible to communicate by placing radio waves on the power supply line it can. As described above, the commercial power outage prevention device of the present invention assigns priorities to a plurality of power supply loads, and determines a load having a lower priority according to a current setting value within a permissible current value. By shutting off the power supply from electric kotatsu that has a heat storage effect, you can use the hair dryer you want to use now and prevent the blackout due to excessive use of electrical equipment without losing the convenience as much as possible. Prevents losing precious data that was wasted due to overcurrent power outage by obtaining power directly from the power line outlet, and saving power by setting the current set value to a value significantly lower than the allowable value Can be obtained considerably.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a diagram showing one embodiment of a commercial power consumption control device of the present invention. [Description of Signs] 1 switchboard 2 branch breaker 1 3 branch breaker 2 4 branch breaker 3 5 main breaker 6 commercial power line 1 7 commercial power line 2 8 main breaker induction current detecting magnetic core 1 9 branch Induction current detection magnetic core 2 of breaker 3 Induction current detection magnetic core 2 of branch breaker 2 Induction current detection magnetic core 2 of branch breaker 1 12 Power outlet 2 13 Power outlet 1 14 Power outlet 3 15 Consumption Power control board 16 Detection current-voltage conversion amplifier 1 17 Detection current-voltage conversion amplifier 2 18 Detection current-voltage conversion amplifier 3 19 Detection current-voltage conversion amplifier 4 20 Receiving antenna 1 21 Receiver 1 22 DTMF demodulation 23 CPU (H8 / 3048) 24 DTMF modulation 25 Transmitter 1 26 Transmission antenna 1 27 Power switch 29 Power plug 29 Receiving antenna 2 30 Power cutoff control socket board 31 Receiver 2 32 DTMF demodulation and load socket control 33 Fuse 34 Fuse 35 Power cutoff control relay 1 36 Power cutoff control socket 1 37 Power cutoff control socket 2 38 energization cutoff control relay 2 39 transmitting antenna 2 40 transmitter 2 41 DTMF modulation 42 energization return switch

Claims (1)

Claims: 1. An electric current value of an allowable power consumption in an electric power supplied to a general household or a company is set within an allowable current consumption value, a current is measured in real time, and a plurality of loads are wirelessly transmitted. A device that automatically switches between energizing and de-energizing according to the priority order to prevent power failure due to overcurrent.