A New Grid-support Strategy with PV Units to Enhance Short-term Voltage Stability

Islam, M; Mithulananthan, N; Hossain, MJ; Bhumkittipich, K

A New Grid-support Strategy with PV Units to Enhance Short-term Voltage Stability

Islam, M Mithulananthan, N Hossain, MJ Bhumkittipich, K

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Publisher:: IEEE
Publication Type:: Conference Proceeding
Citation:: 2019 IEEE PES GTD Grand International Conference and Exposition Asia, GTD Asia 2019, 2019, pp. 142-147
Issue Date:: 2019-05-15

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Field	Value	Language
dc.contributor.author	Islam, M
dc.contributor.author	Mithulananthan, N
dc.contributor.author	Hossain, MJ
dc.contributor.author	Bhumkittipich, K
dc.date	2019-03-19
dc.date.accessioned	2020-06-11T20:30:06Z
dc.date.available	2020-06-11T20:30:06Z
dc.date.issued	2019-05-15
dc.identifier.citation	2019 IEEE PES GTD Grand International Conference and Exposition Asia, GTD Asia 2019, 2019, pp. 142-147
dc.identifier.isbn	9781538674345
dc.identifier.uri	http://hdl.handle.net/10453/141373
dc.description.abstract	© 2019 IEEE. Modern grid codes demand the integration of voltage support capability with photo-voltaic (PV) generators to ensure a secure and reliable grid operation. On the other hand, short-term voltage instability (STVI) of distribution networks (DNs) is one of the key issues to be addressed due to the rising proportion of induction motor (IM) loads. However, the literature lacks an extensive analysis of short-term voltage stability (STVS) following an unsymmetrical fault in a DN, as well as an effective voltage-support strategy for PV units to improve the STVS while mitigating the excessive voltage swell. Therefore, at first, this paper thoroughly investigates the STVS of a DN subjected to an unbalanced fault. It is perceived that voltage support through conventional methods can increase the risk of STVI and excessive voltage swell. Secondly, a new voltage-support strategy is proposed based on the negative sequence voltage at the point of common coupling (PCC) to improve the STVS and to limit the voltage swell within requirement. The key features of the proposed method are (1) fast and accurate estimation of a network's impedance at PCC is not required, and (2) can be re-designed considering the network behaviors. The proposed method is validated on two IEEE benchmark test systems, and the provided results designate the effectiveness in improving the STVS and alleviating over voltage issues in a DN.
dc.language	en
dc.publisher	IEEE
dc.relation.ispartof	2019 IEEE PES GTD Grand International Conference and Exposition Asia, GTD Asia 2019
dc.relation.ispartof	IEEE PES GTD Grand International Conference and Exposition Asia
dc.relation.isbasedon	10.1109/GTDAsia.2019.8715883
dc.rights	© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.	en_US
dc.rights	info:eu-repo/semantics/closedAccess
dc.title	A New Grid-support Strategy with PV Units to Enhance Short-term Voltage Stability
dc.type	Conference Proceeding
utslib.location.activity	Bangkok, Thailand
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
pubs.organisational-group	/University of Technology Sydney
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2020-06-11T20:30:03Z
pubs.finish-date	2019-03-23
pubs.place-of-publication	piscataway, USA
pubs.publication-status	Published
pubs.start-date	2019-03-19
dc.location	piscataway, USA

Abstract:

© 2019 IEEE. Modern grid codes demand the integration of voltage support capability with photo-voltaic (PV) generators to ensure a secure and reliable grid operation. On the other hand, short-term voltage instability (STVI) of distribution networks (DNs) is one of the key issues to be addressed due to the rising proportion of induction motor (IM) loads. However, the literature lacks an extensive analysis of short-term voltage stability (STVS) following an unsymmetrical fault in a DN, as well as an effective voltage-support strategy for PV units to improve the STVS while mitigating the excessive voltage swell. Therefore, at first, this paper thoroughly investigates the STVS of a DN subjected to an unbalanced fault. It is perceived that voltage support through conventional methods can increase the risk of STVI and excessive voltage swell. Secondly, a new voltage-support strategy is proposed based on the negative sequence voltage at the point of common coupling (PCC) to improve the STVS and to limit the voltage swell within requirement. The key features of the proposed method are (1) fast and accurate estimation of a network's impedance at PCC is not required, and (2) can be re-designed considering the network behaviors. The proposed method is validated on two IEEE benchmark test systems, and the provided results designate the effectiveness in improving the STVS and alleviating over voltage issues in a DN.

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http://hdl.handle.net/10453/141373