Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm

The kinetic energy stored in the doubly-fed induction generators (DFIG)-based wind farm can be utilized to sustain the dynamic system frequency. However, difficulties arise in determining the control gain to effectively improve the frequency nadir and smoothly return to the maximum power point track...

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Autores principales:	Dejian Yang, Shun Sang, Xinsong Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	generation power system control short-term frequency response two phase second frequency drop General Works A
Acceso en línea:	https://doaj.org/article/ec34726179644660a982065e5bc39c33
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spelling	oai:doaj.org-article:ec34726179644660a982065e5bc39c332021-11-22T05:08:06ZTwo-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm2296-598X10.3389/fenrg.2021.781989https://doaj.org/article/ec34726179644660a982065e5bc39c332021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenrg.2021.781989/fullhttps://doaj.org/toc/2296-598XThe kinetic energy stored in the doubly-fed induction generators (DFIG)-based wind farm can be utilized to sustain the dynamic system frequency. However, difficulties arise in determining the control gain to effectively improve the frequency nadir and smoothly return to the maximum power point tracking (MPPT) operation. This paper addresses a two-phase short-term frequency response (STFR) scheme to boost the frequency nadir and minimize the second drop in the system frequency based on a piecewise control gain. To achieve the first goal, a constant control coefficient, which is determined according to the initial operating conditions of the DFIG-based wind farm, is employed until the frequency nadir produces. To achieve the second goal, the control coefficient, which changes with time, facilitates to smoothly return to the MPPT operation. The effectiveness of the proposed two-phase STFR scheme is verified under various wind power penetration levels, wind speeds, and disturbances. The results reveal that the frequency nadir is improved, and simultaneously, it smoothly returns to the MPPT operation and minimizes the second drop in the system frequency.Dejian YangShun SangShun SangXinsong ZhangFrontiers Media S.A.articlegenerationpower system controlshort-term frequency responsetwo phasesecond frequency dropGeneral WorksAENFrontiers in Energy Research, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	generation power system control short-term frequency response two phase second frequency drop General Works A
spellingShingle	generation power system control short-term frequency response two phase second frequency drop General Works A Dejian Yang Shun Sang Shun Sang Xinsong Zhang Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm
description	The kinetic energy stored in the doubly-fed induction generators (DFIG)-based wind farm can be utilized to sustain the dynamic system frequency. However, difficulties arise in determining the control gain to effectively improve the frequency nadir and smoothly return to the maximum power point tracking (MPPT) operation. This paper addresses a two-phase short-term frequency response (STFR) scheme to boost the frequency nadir and minimize the second drop in the system frequency based on a piecewise control gain. To achieve the first goal, a constant control coefficient, which is determined according to the initial operating conditions of the DFIG-based wind farm, is employed until the frequency nadir produces. To achieve the second goal, the control coefficient, which changes with time, facilitates to smoothly return to the MPPT operation. The effectiveness of the proposed two-phase STFR scheme is verified under various wind power penetration levels, wind speeds, and disturbances. The results reveal that the frequency nadir is improved, and simultaneously, it smoothly returns to the MPPT operation and minimizes the second drop in the system frequency.
format	article
author	Dejian Yang Shun Sang Shun Sang Xinsong Zhang
author_facet	Dejian Yang Shun Sang Shun Sang Xinsong Zhang
author_sort	Dejian Yang
title	Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm
title_short	Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm
title_full	Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm
title_fullStr	Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm
title_full_unstemmed	Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm
title_sort	two-phase short-term frequency response scheme of a dfig-based wind farm
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/ec34726179644660a982065e5bc39c33
work_keys_str_mv	AT dejianyang twophaseshorttermfrequencyresponseschemeofadfigbasedwindfarm AT shunsang twophaseshorttermfrequencyresponseschemeofadfigbasedwindfarm AT shunsang twophaseshorttermfrequencyresponseschemeofadfigbasedwindfarm AT xinsongzhang twophaseshorttermfrequencyresponseschemeofadfigbasedwindfarm
_version_	1718418196561657856

Two-Phase Short-Term Frequency Response Scheme of a DFIG-Based Wind Farm

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