Load shedding control means

Details Load shedding control means Load shedding control means

1979-06-08

1982-11-16

Gellner, Michael L.

Electrical transmission or interconnection systems

Plural load circuit systems

Selectively connected or controlled load circuits

340310R, 307 3, H04B 354

Patent

active

043596444

ABSTRACT:
An electrical information transmitting means for consumer load control comprises a transmitter which transmits a coded signal through the conductors of an alternating current electrical distribution network as a sequence of wave-form distortions to a receiver which decodes the signal. The receiver comprises two correlators connected in quadrature, and the transmitters and each correlator synthesize synchronous signals from the power frequency, all of which is locked thereto. The D.C. voltage outputs of the correlators are squared and summed so that the receiver is independent of phase angle.

REFERENCES:
patent: 3488517 (1970-01-01), Cowan et al.
patent: 3626297 (1971-12-01), Green
"Pulse Coded Inverter for Utility Load Management System", Galloway et al., IAS '77 Annual, pp. 149-155.
Principles of Communication Engineering, Wazencraft and Jacobs, pp. 516, 517, 1967.
Information Transmission, Modulation and Noise, Schwartz, pp. 197-201, 1970.

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