Wave transmission lines and networks – Automatically controlled systems – With control of equalizer and/or delay network
Patent
1974-11-21
1976-06-08
Shoop, William M.
Wave transmission lines and networks
Automatically controlled systems
With control of equalizer and/or delay network
333 3, H02M 700
Patent
active
039626237
ABSTRACT:
A direct current transmission system includes two separate parallel transmission circuits each including convertors. The transmission circuits are bipolar. One pole of one of the circuits is provided with pole reversing switches for the convertors of that pole. The poles of each of the circuits are connected in parallel by transmission lines. Switches are provided by which one of the transmission lines of one circuit can be disconnected from that circuit and connected across a faulty transmission line of the other circuit, which meanwhile is disconnected therefrom, so as to substitute for the disconnected transmission line of the second circuit.
REFERENCES:
patent: 3526780 (1970-09-01), Uhemann et al.
patent: 3536930 (1970-10-01), Stackegard
patent: 3543045 (1970-11-01), Hammarlund et al.
Allmanna Svenska Elektriska Aktiebolaget
Shoop William M.
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