Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units

Abstract—Many aspects of Phasor Measurement Unit (PMU) performance are tested using the existing (and evolving) IEEE C37.118 standard. However, at present the reaction of PMUs to power network faults is not assessed under C37.118. Nevertheless, the behaviour of PMUs under such conditions may be im...

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Main Author:	Mohd Yunos , Ali
Format:	Thesis
Language:	English
Published:	2014
Subjects:	TK Electrical engineering Electronics Nuclear engineering
Online Access:	http://eprints.utem.edu.my/id/eprint/15285/1/Improving%20Frequency%20and%20ROCOF%20Accuracy%20During%20Faults%2C%20for%20P%20Class%20Phasor%20Measurement%20Units.pdf
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spelling	my-utem-ep.152852015-11-19T00:44:27Z Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units 2014 Mohd Yunos , Ali TK Electrical engineering. Electronics Nuclear engineering Abstract—Many aspects of Phasor Measurement Unit (PMU) performance are tested using the existing (and evolving) IEEE C37.118 standard. However, at present the reaction of PMUs to power network faults is not assessed under C37.118. Nevertheless, the behaviour of PMUs under such conditions may be important when the entire closed loop of power system measurement, control and response is considered. This paper presents ways in which P class PMU algorithms may be augmented with software which reduces peak frequency excursions during unbalanced faults by factors of typically between 2.5 and 6 with no additional effect on response time, delay or latency. Peak ROCOF excursions are also reduced. In addition, extra filtering which still allows P class response requirements to be met can further reduce excursions, in particular ROCOF. Further improvement of triggering by using midpoint taps of the P class filter, and adaptive filtering, allows peak excursions to be reduced by total factors of between 8 and 40 (or up to 180 for ROCOF), compared to the C37.118 reference device. Steady-state frequency and ROCOF errors during sustained faults or unbalanced operation, particularly under unbalanced conditions, can be reduced by factors of hundreds or thousands compared to the C37.118 reference device. 2014 Thesis http://eprints.utem.edu.my/id/eprint/15285/ http://eprints.utem.edu.my/id/eprint/15285/1/Improving%20Frequency%20and%20ROCOF%20Accuracy%20During%20Faults%2C%20for%20P%20Class%20Phasor%20Measurement%20Units.pdf text en public http://library.utem.edu.my:8000/elmu/index.jsp?module=webopac-d&action=fullDisplayRetriever.jsp&szMaterialNo=0000094723 phd doctoral University of Strathclyde Deparment of Electronic and Electrical Engineering
institution	Universiti Teknikal Malaysia Melaka
collection	UTeM Repository
language	English
topic	TK Electrical engineering Electronics Nuclear engineering
spellingShingle	TK Electrical engineering Electronics Nuclear engineering Mohd Yunos , Ali Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units
description	Abstract—Many aspects of Phasor Measurement Unit (PMU) performance are tested using the existing (and evolving) IEEE C37.118 standard. However, at present the reaction of PMUs to power network faults is not assessed under C37.118. Nevertheless, the behaviour of PMUs under such conditions may be important when the entire closed loop of power system measurement, control and response is considered. This paper presents ways in which P class PMU algorithms may be augmented with software which reduces peak frequency excursions during unbalanced faults by factors of typically between 2.5 and 6 with no additional effect on response time, delay or latency. Peak ROCOF excursions are also reduced. In addition, extra filtering which still allows P class response requirements to be met can further reduce excursions, in particular ROCOF. Further improvement of triggering by using midpoint taps of the P class filter, and adaptive filtering, allows peak excursions to be reduced by total factors of between 8 and 40 (or up to 180 for ROCOF), compared to the C37.118 reference device. Steady-state frequency and ROCOF errors during sustained faults or unbalanced operation, particularly under unbalanced conditions, can be reduced by factors of hundreds or thousands compared to the C37.118 reference device.
format	Thesis
qualification_name	Doctor of Philosophy (PhD.)
qualification_level	Doctorate
author	Mohd Yunos , Ali
author_facet	Mohd Yunos , Ali
author_sort	Mohd Yunos , Ali
title	Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units
title_short	Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units
title_full	Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units
title_fullStr	Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units
title_full_unstemmed	Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units
title_sort	improving frequency and rocof accuracy during faults, for p class phasor measurement units
granting_institution	University of Strathclyde
granting_department	Deparment of Electronic and Electrical Engineering
publishDate	2014
url	http://eprints.utem.edu.my/id/eprint/15285/1/Improving%20Frequency%20and%20ROCOF%20Accuracy%20During%20Faults%2C%20for%20P%20Class%20Phasor%20Measurement%20Units.pdf
_version_	1747833868237406208

Improving frequency and ROCOF accuracy during faults, for P class phasor measurement units

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