Direct current transmission and method of operating the same
US3968419A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 13, 1975 |
| Grant date | Jul 6, 1976 |
| Priority date | — |
| Expiry date | Mar 13, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In the operation of a bipolar direct-current transmission system having bipolar convertor stations with earthed center taps and transmission lines connecting the stations, one for each polarity, in which system in the event of disconnection of one pole of the stations the corresponding pole of the transmission line is connected as a return conductor for the remaining pole, in order to load the return connector with current and discharge the ground connections between the stations, the current of the corresponding pole in one of the stations is increased to the same value as the pole in operation, and thereafter the ground connection of such corresponding pole is interrupted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.