Direct current transmission with two parallel circuits
US3962623A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 21, 1974 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Nov 21, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.