Fault magnitude calculation during current transformer saturation
US10637233B2 · kind B2 · utility
2Cited by
4References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 15, 2018 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Sep 8, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/2639
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Improvements in the functioning of a line-mounted device to calculate a fault current magnitude during current transformer (CT) saturation are disclosed herein. The line-mounted device may determine direct current (DC) components of a sampled current signal using valid sample pairs obtained during unsaturated regions of peaks of the sampled current signal. The DC components may be removed from the sampled current signal to produce a sinusoidal current signal. The fault current magnitude may be calculated using the sinusoidal current signal with the DC components removed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.