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Proceedings Paper

Fiber optic current and voltage sensors for electric power transmission systems
Author(s): Klaus Bohnert; Andreas Frank; Georg M. Müller; Lin Yang; Miklos Lenner; Philippe Gabus; Xun Gu; Sergio V. Marchese
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Paper Abstract

Optical current and voltage sensors have become attractive alternatives to conventional instrument transformers in high voltage electric power transmission systems. The optical sensors offer important benefits such as small size and weight, enhanced performance, and constitute an important part of the transition to digital substations. The sensors must comply with stringent accuracy and reliability requirements. Commonly, substation applications demand accuracy to within ±0.2% over outdoor temperature ranges. Other aspects are insensitivity to shock and vibration and stray fields as well as life times in excess of 30 years. We review the technology of the sensors and present particular measures that were necessary to achieve the required performance. This includes the exploration of different sensing fiber types, inherent temperature compensation, accelerated life tests, and, in case of voltage sensors, adequate high voltage proof insulation and packaging. We discuss the integration of a current sensor into a circuit breaker and show results from a corresponding field test.

Paper Details

Date Published: 14 May 2018
PDF: 12 pages
Proc. SPIE 10654, Fiber Optic Sensors and Applications XV, 1065402 (14 May 2018); doi: 10.1117/12.2303945
Show Author Affiliations
Klaus Bohnert, ABB Corporate Research (Switzerland)
Andreas Frank, ABB Corporate Research (Switzerland)
Georg M. Müller, ABB Corporate Research (Switzerland)
Lin Yang, ABB Corporate Research (Switzerland)
Miklos Lenner, ABB Corporate Research (Switzerland)
Philippe Gabus, ABB Ltd. (Switzerland)
Xun Gu, ABB Ltd. (Switzerland)
Sergio V. Marchese, ABB Ltd. (Switzerland)

Published in SPIE Proceedings Vol. 10654:
Fiber Optic Sensors and Applications XV
Alexis Mendez; Christopher S. Baldwin; Henry H. Du, Editor(s)

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