NDLI: A High-Performance Hybrid Current Transformer Based on a Fast Variable Optical Attenuator

Content Provider	IEEE Xplore Digital Library
Author	Pu Wei Cheng Cheng Xuefeng Wang Xuekang Shan Xiaohan Sun
Copyright Year	1986
Abstract	We present a novel hybrid electro-optic current transformer based on a fast variable optical attenuator (FVOA) with the features of ultra-low power consumption and polarization insensitivity. An optic-electro feedback loop with a PID control algorithm is designed to compensate the nonlinearity of the FVOA. In addition, the impacts of the power drift of the optical source and variance of fiber loss have been investigated and eliminated. The transformer is built with a verified power consumption of 0.85 mW. Experiments were made in which the linearity, the robustness, the accuracy and the temperature stability of the transformer were tested. The results show that the ratio errors and the phase errors are below 0.07% and 5 min, respectively, when the primary current increased from 25 to 600 A. In addition, the maximum error drifts of 0.17% and 2.8 min were recorded over the -20 to 80°C range.
Sponsorship	IEEE Power Engineering Society
Starting Page	2656
Ending Page	2663
Page Count	8
File Size	1512041
File Format	PDF
ISSN	08858977
Volume Number	29
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Optical attenuators Current transformers Optical feedback Optical sensors Optical polarization Adaptive optics Feedback loop ultra-low power consumption Current measurement current transformers (CTs) electro-optic measurement optical transducers
Content Type	Text
Resource Type	Article
Subject	Energy Engineering and Power Technology Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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