OPTICAL SENSORS FOR ELECTRIC SUBSTATIONS - A VOLTAGE PRESENCE DETECTOR USING A LIQUID-CRYSTAL CELL

Authors
ANAGNI F BARTOLETTI C MARCHETTI U PODESTA L SACERDOTI G
Citation
F. Anagni et al., OPTICAL SENSORS FOR ELECTRIC SUBSTATIONS - A VOLTAGE PRESENCE DETECTOR USING A LIQUID-CRYSTAL CELL, IEEE transactions on instrumentation and measurement, 43(3), 1994, pp. 475-480
Citations number
31
Categorie Soggetti
Engineering, Eletrical & Electronic","Instument & Instrumentation
Journal title
IEEE transactions on instrumentation and measurement → ACNP
ISSN journal
00189456
Volume
43
Issue
3
Year of publication
1994
Pages
475 - 480
Database
ISI
SICI code
0018-9456(1994)43:3<475:OSFES->2.0.ZU;2-Y
Abstract
A new fiber optic voltage presence detector is presented, based on the detection of the excitation state of a liquid crystal cell by means o f an optical technique. The sensor was designed to work in electric me tal-clad medium-voltage (MV) switchboards with SF6 insulation where EM immunity and insulation requirements make fiber optic sensing the mos t suitable choice. The small size of the probe, its high reliability, and its low cost make it especially suited for these compact structure s. Working principle and design details are reported.