System and method for optimizing power shed/restore operations

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307 35, 307 38, H02J 314, G06F 1556

Patent

active

044647247

ABSTRACT:
A power shedding-restoring system for controlling delivery of electrical energy from a power line to a residence having a plurality of controlled loads with predetermined priorities includes a plurality of load relays, a circuit for measuring total power delivered to the residence, a computer for computing and storing a shed value for each controlled load as it is shed, a minor average equal to the average power delivered to the residence over the past minute, and a major average equal to the average power delivered to the residence over the past hour. The computer also stores a power limit preset by the residence owner, and compares the minor average and the major average to the power limit. If the minor average and the major average both exceed the power limit, the system sheds the lowest priority controlled load that is presently electrically connected to the power line. If the minor average and the major average both are less than the power limit, the system restores the highest priority controlled load that is presently not electrically connected to the power lines. If either the minor average or the major average exceeds the power limit and the other is less than the power limit, the system postpones any decision to shed or restore a load until both the minor average and the major average either exceed or are less than the power limit.

REFERENCES:
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patent: 4181950 (1980-01-01), Carter
patent: 4213182 (1980-07-01), Eichelberger et al.
patent: 4253151 (1981-02-01), Bouve
patent: 4293915 (1981-10-01), Carpenter et al.
patent: 4347576 (1982-08-01), Kensinger et al.
patent: 4360879 (1982-11-01), Cameron

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