Method and device for starting direct-current (DC) transmission line protection, and storage medium
US11742652B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 13, 2019 |
| Grant date | Aug 29, 2023 |
| Priority date | — |
| Expiry date | Nov 17, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/445
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and device for starting direct-current (DC) transmission line protection, and a storage medium. The method includes: determining whether a sudden change of a DC line current at a present moment is greater than a sum of a memory start threshold and a maximum value in sudden changes of the DC line current within a time period preceding the present moment that is multiplied by a preset proportional coefficient, the time period being a time period between a moment preceding the present moment by a first duration and a moment preceding the present moment by a second duration; and starting DC transmission line protection in response to determining that the sudden change of the DC line current at the present moment is greater than the sum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.