Time-domain directional line protection of electric power delivery systems
US10090664B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2016 |
| Grant date | Oct 2, 2018 |
| Priority date | — |
| Expiry date | May 17, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H1/0092
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to detection of faults in an electric power system. In one embodiment, an incremental quantities subsystem is configured to determine a forward torque, an operating torque, and a reverse torque based on the plurality of time-domain representations of electrical conditions. Each of the forward torque, the operating torque, and the reverse torque may be integrated over an interval. A fault detection subsystem may determine an occurrence of the fault based on a comparison of the operating torque to the forward torque and the reverse torque. Further, a direction of the fault may be determined based on the comparison of the forward torque, the operating torque, and the reverse torque. A fault may be declared based on the comparison and the direction. A protective action subsystem may implement a protective action based on the declaration of the fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.