Distribution network power line communication system

Details Distribution network power line communication system Distribution network power line communication system

1975-12-08

1977-12-27

Caldwell, Sr., John W.

Communications: electrical

Systems

Selsyn type

307149, 323128, H04B 356

Patent

active

040657639

ABSTRACT:
A distribution network power line communication system which includes coupling means for applying a carrier current communication signal to the polyphase primary distribution conductors with a proportional relationship between the signal voltages applied to the various conductors selected to provide a predetermined propagation mode. Impedance elements are connected between the conductors at selected points remote from the coupling point, such as at the location of unbalanced loads, line taps, branches, capacitor banks, distribution transformers, and other line discontinuities which may cause mode conversion. The impedance elements are selected and connected to re-establish the predetermined propagation mode.

REFERENCES:
patent: 2294735 (1942-09-01), Du Mont
patent: 2347512 (1944-04-01), Schroeder
patent: 2713145 (1955-07-01), Storsand
patent: 2743434 (1956-04-01), Fleming
patent: 3942170 (1976-03-01), Whyte
patent: 3967264 (1976-06-01), Whyte et al.

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