Method, system and apparatus for fault detection
US11885843B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 13, 2019 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Aug 24, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/086
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method, system and apparatus for fault detection in line protection for a power transmission system. The method includes: obtaining a sampled value of voltage at a measurement point, at which a protection device for the line protection is installed, on an electrical line; obtaining a sampled value of current at the measurement point; calculating an instantaneous measurement point voltage value specified by operation criterion of a protection device from the sampled value of voltage at the measurement point and the sampled value of current at the measurement point by using measurement differential equation according to a time domain lumped parameter model for the electrical line; calculating an instantaneous comparison voltage value specified by operation criterion of a protection device from the sampled value of voltage at the measurement point and the sampled value of current at the measurement point by using comparison differential equation according to a time domain lumped parameter model for the electrical line; and performing the fault detection based on the comparison result of the instantaneous measurement point voltage value and the instantaneous comparison voltage value.…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.