Three-phase power distribution network communication system

Details Three-phase power distribution network communication system Three-phase power distribution network communication system

1981-04-09

1982-11-02

Yusko, Donald J.

Communications: electrical

Systems

Selsyn type

375 4, 34082501, H04B 356

Patent

active

043575986

ABSTRACT:
A communication system for a three-phase power distribution network is comprised of a plurality of remote devices, with certain of the remote devices being used as signal repeaters. Injection point circuitry provides an out-going communication signal which is coupled to the three-phase conductors such that each phase conductor carries an identical, independent, outgoing communication signal. The signal repeaters are each coupled to at least two of the three-phase conductors. Each signal repeater includes circuitry for producing a composite signal in response to the coupled signals. The composite signal has a signal-to-noise ratio typically superior to, but not worse than, the signal-to-noise ratio of the best of the coupled signals. The remainder of the remote devices are independently coupled to at least one of the three-phase conductors so as to facilitate communication with each of the remote devices.

REFERENCES:
patent: 4065763 (1977-12-01), Whyte et al.
patent: 4159470 (1979-06-01), Strojny et al.
patent: 4188619 (1980-02-01), Perkins
patent: 4276605 (1981-06-01), Okamoto et al.

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