Fault location in DC networks
US10310003B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2015 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Oct 12, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY04S10/52
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
This application relates to methods and apparatus for fault protection in a DC power transmission network or grid that aid in determining the location of a fault in the network. The method involves, in the event of a fault, controlling at least one current limiting element of the network so as to limit a fault current flowing to below a first current level which is within the expected current operating range of the network in normal operation, i.e. a safe level. The fault current is then controlled to maintain a non-zero level of fault current flow and the characteristics of the fault current flow at different parts of the network are determined by fault current detection modules. The location of the fault is then determined based on the determined characteristics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.