Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Patent
1978-05-26
1980-07-08
Hix, L. T.
Electrical transmission or interconnection systems
Plural load circuit systems
Control of current or power
307 38, H02J 314
Patent
active
042119332
ABSTRACT:
An energy management method employing apparatus for automatically limiting the total instant consumption of electrical energy in a residential circuit having a plurality of energy-consuming variable demand loads having different nominal current demands. A predetermined load shedding sequence is established which is independent of the nominal current demands of the load. The actual current consumption value of each load shed is measured. Shed loads are restored which, according to their actual values and independent of their nominal values, can be restored without causing the total current in residential circuit to exceed the preselected demand. Measurement of the consumption values of the shed loads enables load restoration selections based thereon without modification of the energy management apparatus to account for variations in the nominal demands of the loads.
In a presently preferred embodiment the total current loads in the total current demand is periodically remeasured and additional loads are restored if the actual current demand thereof, added to the actual demands of the loads then in operation, do not exceed the predetermined peak demand.
In a further presently preferred embodiment, the loads are automatically restored sequentially if possible. But if not possible, the priority sequence is ignored and loads of lower priority are restored, if possible without exceeding the predetermined peak demand.
REFERENCES:
patent: 3652838 (1972-03-01), Dillon et al.
patent: 4064485 (1977-12-01), Leyde
patent: 4075699 (1978-02-01), Scheider et al.
patent: 4146923 (1979-03-01), Borkan
Hedges Walter P.
Sullivan, II C. Gardner
Cyborex Laboratories, Inc.
Drummond William H.
Dwyer James L.
Hix L. T,.
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