Patent · US Active

Optical high voltage sensor

US8233754B2 · kind B2 · utility

10Cited by

10References

61Claims

0Family size

Assignee

ABB RESEARCH LTD. · CH

Inventors

Klaus Bohnert · Oberrohrdorf, CH
Andreas Frank · Sindelfingen, DE
Hubert Brandle · Oberengstringen, CH

Key dates

Filing date	Jun 22, 2009
Grant date	Jul 31, 2012
Priority date	—
Expiry date	Mar 27, 2030

Classification

Technology area (CPC G)Physics
CPC primaryG01R15/247
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

An electro-optical high-voltage sensor includes a waveguiding sensing fiber of an electro-optical material. The electrical field of the voltage to be measured is substantially parallel to the longitudinal axis of the sensing fiber. The sensing fiber carries two orthogonally polarized light waves, with the applied field affecting the birefringence between the waves. Using an electro-optical waveguiding fiber in this configuration allows the voltage between two widely spaced points to be accurately measured.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.