Method of fault phase selection and fault type determination
US9118181B2 · kind B2 · utility
1Cited by
3References
6Claims
0Family size
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Key dates
| Filing date | Aug 6, 2010 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Aug 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/26
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention is concerned with a method for faulted phase selection and fault type determination in electric power lines applicable both to series compensated and uncompensated power lines. The method comprising a fault inception detection and an estimation of fault phase current signals, pre-fault current signals and zero-sequence current in order to receive the absolute value of incremental current signals and their maximum value from which real value indicators for phase to phase faults, real value indicators for 3-phase fault and a real value indicator for ground fault are determined. The method further comprises
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.