Electrical transmission or interconnection systems – Plural load circuit systems – Control of current or power
Patent
1978-02-13
1980-06-17
Gellner, Michael L.
Electrical transmission or interconnection systems
Plural load circuit systems
Control of current or power
307 23, 307 39, 307126, H02J 906
Patent
active
042085934
ABSTRACT:
A method and system for controlling peak electrical demand placed on a source of electrical energy by a plurality of electrical loads that include at least one electrical load of lower priority than at least another of the loads. Demand for electrical energy by the loads connected to the source of electrical energy is sensed and, in response to the sensed demand exceeding a predetermined value the loads are selectively disconnected from the source. Normally, all the loads are connected to the source in the absence of a sensed excessive demand condition. Therefore, all demand control is lost in the event of failure of the controller. Accordingly, the system senses an abnormal operating condition of the controlling system of the type that renders the selective disconnecting means inoperative to disconnect the loads from the source. The electrical load of lower priority is then disconnected from the source for the duration of the sensed abnormal condition. Also disclosed are a system and method for selectively disconnecting loads from a source on the basis of either demand and time or merely demand.
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Energy Management System, En-Co 2000, Inc.
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Gellner Michael L.
Rogers, III L. Lawton
Schneyer S.D.
U.S. Energy Conservation Systems, Inc.
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