Modelling of current transformer for the application of error estimation, estimation factor and ratio error

The research contributed in the investigation of current transformer performance with harmonic distortion. Besides that, the research also contributed in enhances the current transformer efficiency by estimation the phase angle and ratio errors. In this thesis, the correction factors have been esti...

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Main Author:	Khairul Anuar, Mohd Nor
Format:	Thesis
Language:	English
Subjects:	Current transformer Transformers Harmonic distortion Electric transformers
Online Access:	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44128/1/p.1-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44128/2/full%20text.pdf
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spelling	my-unimap-441282016-11-22T08:17:27Z Modelling of current transformer for the application of error estimation, estimation factor and ratio error Khairul Anuar, Mohd Nor The research contributed in the investigation of current transformer performance with harmonic distortion. Besides that, the research also contributed in enhances the current transformer efficiency by estimation the phase angle and ratio errors. In this thesis, the correction factors have been estimated to work up the current transformer performance and accuracy. Throughout this project, the current transformer 15/1A and 7.5/1A are tested with different percentages of total harmonic distortion. The first part of testing is done with software simulation using PSCAD when current transformer modeled with different burden. The PSCAD simulation is compared in terms of primary and secondary current, harmonic current, current transformer ratio and burden. Different percentage of total harmonic distortion current is supplied to test the current transformer performance by using PSCAD software. PSCAD also simulate to see the current transformer saturation when operates with different values of magnetizing impedance. Element of comparative studies was included in the simulation part by doing the comparison with the model from University of Manitoba and other researcher. The second part is the hardware comparison between the linear and non-linear loads used in current transformers. In this part, the bulbs used as linear loads and personal computers as non-linear loads. Reaction and efficiency of current transformer are tested when connected with both types of loads and increasing the input current. Power meter analyzer (PM300) and VPAS software connected to the circuit to plot current waveform and measured phase angle error. The next comparison is between current transformer class 1 and class 3 tested with burden 0.5ohm, 10 ohm and 25 ohm due to the availability of the resistor banks. From the overall experiment of software and hardware, results shows that different percentage of harmonics bring effects to the current transformer in terms of efficiency, phase angle error and ratio error. The effect also counted on the values of secondary burden. The harmonic effects on the current transformer tested presence until the current transformer saturate. These are due to the increment of primary current, DC component, harmonic and frequency changed. Otherwise, current transformer error is strongly influenced by the non-linearity of the magnetizing current. Finally, the study in this field is contributed to enhance current transformer performance in power quality system. Universiti Malaysia Perlis (UniMAP) 2013 Thesis en http://dspace.unimap.edu.my:80/xmlui/handle/123456789/44128 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44128/1/p.1-24.pdf 0d2880c04f0693615ec1754f9b656d5a http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44128/2/full%20text.pdf 24d167cd73521623a8a744a88cce1e30 http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44128/3/license.txt 8a4605be74aa9ea9d79846c1fba20a33 Current transformer Transformers Harmonic distortion Electric transformers School of Electrical Systems Engineering
institution	Universiti Malaysia Perlis
collection	UniMAP Institutional Repository
language	English
topic	Current transformer Transformers Harmonic distortion Electric transformers
spellingShingle	Current transformer Transformers Harmonic distortion Electric transformers Khairul Anuar, Mohd Nor Modelling of current transformer for the application of error estimation, estimation factor and ratio error
description	The research contributed in the investigation of current transformer performance with harmonic distortion. Besides that, the research also contributed in enhances the current transformer efficiency by estimation the phase angle and ratio errors. In this thesis, the correction factors have been estimated to work up the current transformer performance and accuracy. Throughout this project, the current transformer 15/1A and 7.5/1A are tested with different percentages of total harmonic distortion. The first part of testing is done with software simulation using PSCAD when current transformer modeled with different burden. The PSCAD simulation is compared in terms of primary and secondary current, harmonic current, current transformer ratio and burden. Different percentage of total harmonic distortion current is supplied to test the current transformer performance by using PSCAD software. PSCAD also simulate to see the current transformer saturation when operates with different values of magnetizing impedance. Element of comparative studies was included in the simulation part by doing the comparison with the model from University of Manitoba and other researcher. The second part is the hardware comparison between the linear and non-linear loads used in current transformers. In this part, the bulbs used as linear loads and personal computers as non-linear loads. Reaction and efficiency of current transformer are tested when connected with both types of loads and increasing the input current. Power meter analyzer (PM300) and VPAS software connected to the circuit to plot current waveform and measured phase angle error. The next comparison is between current transformer class 1 and class 3 tested with burden 0.5ohm, 10 ohm and 25 ohm due to the availability of the resistor banks. From the overall experiment of software and hardware, results shows that different percentage of harmonics bring effects to the current transformer in terms of efficiency, phase angle error and ratio error. The effect also counted on the values of secondary burden. The harmonic effects on the current transformer tested presence until the current transformer saturate. These are due to the increment of primary current, DC component, harmonic and frequency changed. Otherwise, current transformer error is strongly influenced by the non-linearity of the magnetizing current. Finally, the study in this field is contributed to enhance current transformer performance in power quality system.
format	Thesis
author	Khairul Anuar, Mohd Nor
author_facet	Khairul Anuar, Mohd Nor
author_sort	Khairul Anuar, Mohd Nor
title	Modelling of current transformer for the application of error estimation, estimation factor and ratio error
title_short	Modelling of current transformer for the application of error estimation, estimation factor and ratio error
title_full	Modelling of current transformer for the application of error estimation, estimation factor and ratio error
title_fullStr	Modelling of current transformer for the application of error estimation, estimation factor and ratio error
title_full_unstemmed	Modelling of current transformer for the application of error estimation, estimation factor and ratio error
title_sort	modelling of current transformer for the application of error estimation, estimation factor and ratio error
granting_institution	Universiti Malaysia Perlis (UniMAP)
granting_department	School of Electrical Systems Engineering
url	http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44128/1/p.1-24.pdf http://dspace.unimap.edu.my:80/xmlui/bitstream/123456789/44128/2/full%20text.pdf
_version_	1747836825964118016

Modelling of current transformer for the application of error estimation, estimation factor and ratio error

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