Virtual ground following single-phase trip
US6667866B1 · kind B1 · utility
21Cited by
2References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 2000 |
| Grant date | Dec 23, 2003 |
| Priority date | — |
| Expiry date | Jan 19, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H3/083
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A three phase trip of a power line is prevented in a power distribution network delivering electrical power through multiple current carrying conductors and a neutral/ground line. The three phase trip is prevented after a change in the current in the neutral/ground line caused by a partial trip of a recloser. A partial trip is detected in the power distribution network, and then a threshold current is automatically adjusted from a first level to a second level for the neutral/ground line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.