A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES

With the increased penetration of the photovoltaic (PV) energy, the power system stability problem becomes an issue, as the output power of PV plants has unpredictable fluctuations. To maintain the power stability of the PV plants, battery energy storages (BESs) play an important role due to their f...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Yuchen Hao, Dawei Su, Zhen Lei
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	PV plant battery energy storage PV-string current characteristics power fluctuations operation cost General Works A
Acceso en línea:	https://doaj.org/article/effc68ecd73f4df285d4348e27708145
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:effc68ecd73f4df285d4348e27708145
record_format	dspace
spelling	oai:doaj.org-article:effc68ecd73f4df285d4348e277081452021-11-11T07:50:05ZA Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES2296-598X10.3389/fenrg.2021.785420https://doaj.org/article/effc68ecd73f4df285d4348e277081452021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fenrg.2021.785420/fullhttps://doaj.org/toc/2296-598XWith the increased penetration of the photovoltaic (PV) energy, the power system stability problem becomes an issue, as the output power of PV plants has unpredictable fluctuations. To maintain the power stability of the PV plants, battery energy storages (BESs) play an important role due to their fast and accurate response speed. However, it is challenging that the BES with multiple sub-modules responds well to the PV power fluctuations resulting from the various influence factors, such as defects, faults, and partial shading. Therefore, a bi-level control strategy is proposed in this paper, aiming at minimizing the operation cost of BES in maintaining power stability. The control strategy consists of the PV power fluctuations identification block and the mitigation block. In specific, the identification block can output the power fluctuation of a PV system by the PV power fluctuation identification technique. The technique is developed based on the characteristics of PV-string current under electrical faults and partial shading conditions. Meanwhile, the mitigation block can manage the multiple battery sub-modules with different regulation characteristics to meet the power fluctuations. At last, the promising results are obtained by MATLAB\Simulink with the coordinated operation of those two blocks, including the precise condition of the PV system and the optimal power output of each battery sub-module. Therefore, a comprehensive bi-level control strategy is developed to regulate the operation of battery sub-modules for PV-BES systems.Yuchen HaoDawei SuZhen LeiFrontiers Media S.A.articlePV plantbattery energy storagePV-string current characteristicspower fluctuationsoperation costGeneral WorksAENFrontiers in Energy Research, Vol 9 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	PV plant battery energy storage PV-string current characteristics power fluctuations operation cost General Works A
spellingShingle	PV plant battery energy storage PV-string current characteristics power fluctuations operation cost General Works A Yuchen Hao Dawei Su Zhen Lei A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES
description	With the increased penetration of the photovoltaic (PV) energy, the power system stability problem becomes an issue, as the output power of PV plants has unpredictable fluctuations. To maintain the power stability of the PV plants, battery energy storages (BESs) play an important role due to their fast and accurate response speed. However, it is challenging that the BES with multiple sub-modules responds well to the PV power fluctuations resulting from the various influence factors, such as defects, faults, and partial shading. Therefore, a bi-level control strategy is proposed in this paper, aiming at minimizing the operation cost of BES in maintaining power stability. The control strategy consists of the PV power fluctuations identification block and the mitigation block. In specific, the identification block can output the power fluctuation of a PV system by the PV power fluctuation identification technique. The technique is developed based on the characteristics of PV-string current under electrical faults and partial shading conditions. Meanwhile, the mitigation block can manage the multiple battery sub-modules with different regulation characteristics to meet the power fluctuations. At last, the promising results are obtained by MATLAB\Simulink with the coordinated operation of those two blocks, including the precise condition of the PV system and the optimal power output of each battery sub-module. Therefore, a comprehensive bi-level control strategy is developed to regulate the operation of battery sub-modules for PV-BES systems.
format	article
author	Yuchen Hao Dawei Su Zhen Lei
author_facet	Yuchen Hao Dawei Su Zhen Lei
author_sort	Yuchen Hao
title	A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES
title_short	A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES
title_full	A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES
title_fullStr	A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES
title_full_unstemmed	A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES
title_sort	bi-level control strategy for pv-bes system aiming at the minimum operation cost of bes
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/effc68ecd73f4df285d4348e27708145
work_keys_str_mv	AT yuchenhao abilevelcontrolstrategyforpvbessystemaimingattheminimumoperationcostofbes AT daweisu abilevelcontrolstrategyforpvbessystemaimingattheminimumoperationcostofbes AT zhenlei abilevelcontrolstrategyforpvbessystemaimingattheminimumoperationcostofbes AT yuchenhao bilevelcontrolstrategyforpvbessystemaimingattheminimumoperationcostofbes AT daweisu bilevelcontrolstrategyforpvbessystemaimingattheminimumoperationcostofbes AT zhenlei bilevelcontrolstrategyforpvbessystemaimingattheminimumoperationcostofbes
_version_	1718439363088482304

A Bi-Level Control Strategy for PV-BES System Aiming at the Minimum Operation Cost of BES

Ejemplares similares