Method for monitoring vacuum interrupter's condition and an electric switching device
US12217922B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2020 |
| Grant date | Feb 4, 2025 |
| Priority date | — |
| Expiry date | May 21, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/3275
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Embodiments relate to a method for monitoring the vacuum interrupter's condition of an electric device. The method comprises receiving a first voltage signal indicating a first voltage at a first contact of a switch inside the electric device. The first contact of the switch is coupled to a source line. The method further comprises receiving a second voltage signal indicating a second voltage at a second contact of the switch. The second contact of the switch is coupled to a reactive component. The method comprises receiving a current signal indicating a current at the second contact of the switch. The method comprises determining occurrence of a restrike in response to determining increasing amplitudes of the first voltage signal, the second voltage signal and the current signal in a time slot. The method further comprises determining the vacuum interrupter condition based on the determined occurrence of the restrike.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.