Electrical transmission or interconnection systems – Plural supply circuits or sources – Plural converters
Patent
1974-12-04
1976-04-20
Schaefer, Robert K.
Electrical transmission or interconnection systems
Plural supply circuits or sources
Plural converters
321 27R, 307 94, H02H 102
Patent
active
039522105
ABSTRACT:
A double-pole high-voltage direct-current transmission system is provided with two stations and an overhead line or cable, each of the stations having rectifier bridges connected in series from a positive line pole to a ground electrode and from the ground electrode to a negative line pole. The ground or earth serves as return line if one of the line poles should fail. The ground electrode at one of the stations is a depth electrode regularly operated as an anode, and the ground electrode at the other of the stations is regularly operated as a cathode. Two pairs of reversing switches are provided, each of the pairs, when the other of the stations is operated as a rectifier, being connected on the direct-current side of and to the respective rectifier bridges located between the negatively operated line pole and the depth electrode, on the one hand, and between the negatively operated line pole and the ground electrode operated as a cathode, on the other hand.
REFERENCES:
patent: 3454783 (1969-07-01), Hunt
Lacy, DC Power Transmission, "Electronics World", May 1968, pp. 42-43, 69.
Brown Boveri & Cie AG
Ginsburg M.
Lerner Herbert L.
Schaefer Robert K.
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