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Transient Analysis of Current Transformers

The objective of the present work is to investigate the performance and transient behavior of conventional electromagnetic current transformers in comparison to the unconventional current transducers during power system faults. The research has been carried out using PSPICE simulation tools and expe...

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Main Author: Ghumman, Muhammad Ramzan
Format: Thesis
Language:English
Published: 2001
Online Access:http://ethesis.upm.edu.my/id/eprint/3392/1/FK_2001_18_F.pdf
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id oai:ethesis.upm.edu.my:3392
record_format eprints
spelling oai:ethesis.upm.edu.my:3392 http://ethesis.upm.edu.my/id/eprint/3392/ Transient Analysis of Current Transformers Ghumman, Muhammad Ramzan The objective of the present work is to investigate the performance and transient behavior of conventional electromagnetic current transformers in comparison to the unconventional current transducers during power system faults. The research has been carried out using PSPICE simulation tools and experimental testing of current transducers. Different types of transducers considered in this research include normal electromagnetic current transformers (EMCT) and its various types, Hall effect current transformers (HECT) and Opto-couplers. The simulation results have shown that electromagnetic current transformers (EMCT) can suffer from transient saturation during high frequency disturbances or permanent saturation during high fault currents. The electromagnetic current transformers (EMCT) were found to saturate above 20 kHz current surges whilst the Hall effect current transducers (HECT) were found to work up to several 100 kHz. The transformation capability of opto-coupler current transducers, using LED/Si based opto-coupler, was found to be more than 1 MHz. It was estimated that a laser and avalanche photo-detector (APD) based magnetooptic current transformer (MOCT) could effectively translate 1 GHz frequency surges. The simulation results have been experimentally tested and found to be correct within the accuracy resolution of available test and measurement equipment. Based on this work it is safe to declare that EMCT can be used for normal monitoring and measurement applications in utility. It is not good for the reliable protection and control application. Anyway, it does not compete the alternate options such as HECT and MOCT in protection and control applications regarding bandwidth, rise time and fault current diagnostics. 2001-10 Thesis NonPeerReviewed application/pdf en http://ethesis.upm.edu.my/id/eprint/3392/1/FK_2001_18_F.pdf Ghumman, Muhammad Ramzan (2001) Transient Analysis of Current Transformers. Masters thesis, Universiti Putra Malaysia. (FK 2001 18).
institution UPM eTHESES
collection UPM eTHESES
language English
description The objective of the present work is to investigate the performance and transient behavior of conventional electromagnetic current transformers in comparison to the unconventional current transducers during power system faults. The research has been carried out using PSPICE simulation tools and experimental testing of current transducers. Different types of transducers considered in this research include normal electromagnetic current transformers (EMCT) and its various types, Hall effect current transformers (HECT) and Opto-couplers. The simulation results have shown that electromagnetic current transformers (EMCT) can suffer from transient saturation during high frequency disturbances or permanent saturation during high fault currents. The electromagnetic current transformers (EMCT) were found to saturate above 20 kHz current surges whilst the Hall effect current transducers (HECT) were found to work up to several 100 kHz. The transformation capability of opto-coupler current transducers, using LED/Si based opto-coupler, was found to be more than 1 MHz. It was estimated that a laser and avalanche photo-detector (APD) based magnetooptic current transformer (MOCT) could effectively translate 1 GHz frequency surges. The simulation results have been experimentally tested and found to be correct within the accuracy resolution of available test and measurement equipment. Based on this work it is safe to declare that EMCT can be used for normal monitoring and measurement applications in utility. It is not good for the reliable protection and control application. Anyway, it does not compete the alternate options such as HECT and MOCT in protection and control applications regarding bandwidth, rise time and fault current diagnostics.
format Thesis
author Ghumman, Muhammad Ramzan
spellingShingle Ghumman, Muhammad Ramzan
Transient Analysis of Current Transformers
author_facet Ghumman, Muhammad Ramzan
author_sort Ghumman, Muhammad Ramzan
title Transient Analysis of Current Transformers
title_short Transient Analysis of Current Transformers
title_full Transient Analysis of Current Transformers
title_fullStr Transient Analysis of Current Transformers
title_full_unstemmed Transient Analysis of Current Transformers
title_sort transient analysis of current transformers
publishDate 2001
url http://ethesis.upm.edu.my/id/eprint/3392/1/FK_2001_18_F.pdf
_version_ 1819310365573382144
score 13.4562235

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