D2.3 - Unambiguous Wide-Range Optical Voltage Sensor with Dual Operating Wavelengths
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- D2 - Optical Sensors
- X. Gu, S. Marchese, K. Bohnert - ABB Switzerland Corporate Research Center, Baden-Dättwil (Switzerland)
- 536 - 540
We extend the unambiguous measurement range of an electro-optic voltage sensor from 75 kV to 100s of kilovolts (spanning multiple 2π phase shift ranges), by combining phase shift principal value measurements at two different wavelengths. Compared with previous two-wavelength techniques, this new approach completely eliminates all remaining measurement ambiguities.