Alternate voltage sensing method for increased weather robustness of ungrounded power line sensors
US9347972B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2015 |
| Grant date | May 24, 2016 |
| Priority date | — |
| Expiry date | Feb 13, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R1/025
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A voltage sensing system and method for use with ungrounded power line sensors deployed on each phase of a power line. The voltage of each phase is measured using the sensors. This measurement is used unless there is a snow event. A collector is powered by a transformer connected to the power line being monitored and a voltage measurement circuit is configured to measure the collector supply voltage which is then used to obtain an alternate voltage measurement for each phase. When the sensor measured voltage for any phase deviates from the alternate voltage measurement by a pre-established value, a snow event has occurred and the alternate voltage measurement may then be used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.