Load management control system and method

Details Load management control system and method Load management control system and method

1984-09-27

1987-08-11

Lall, Parshotam S.

Boots, shoes, and leggings

364483, 307 39, G06F 1506, H02J 310

Patent

active

046866302

ABSTRACT:
A load management control system and method which communicates load shedding information from a central station controller via existing telephone lines to a substation controller. The substation controller in turn controls the tap position selection of a load tap changing transformer to send encoded step voltage signals down a power distribution line to a load control receiver. The load control receiver decodes the encoded signal message and appropriately controls uniquely associated loads. The substation controller interrupts automatic operation of the voltage maintenance circuitry of the load tap changing transformer during transmission of a message. Control is returned to the automatic circuitry of the load tap changing transformer after the message is completed so as to make existence of the load management control system of the present invention transparent to existing equipment in the field. The method of the present invention maximizes utilization of existing lines of communication and existing power distribution field equipment while minimizing the effect on that same equipment.

REFERENCES:
patent: 3359551 (1967-12-01), Dennison
patent: 4204127 (1980-05-01), Carter, II
patent: 4293915 (1981-10-01), Carpenter et al.
patent: 4363101 (1982-12-01), Czerniejewski
patent: 4396844 (1983-08-01), Miller et al.
patent: 4419665 (1983-12-01), Gurr et al.

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