Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors

The interactions between randomly fluctuating power outputs from photovoltaic (PV) at the DC side and background voltage distortions at the AC side could generate interharmonics in the PV grid-connected system (PVGS). There is no universal method that can reveal the transmission mechanism of interha...

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Autores principales:	Qing Zhong, Yangxin Qiu, Yuming Zhao, Haifeng Li, Gang Wang, Fushuan Wen
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Dynamic phasor sequence component (DPSC) harmonic interharmonic photovoltaic grid-connected system (PVGS) power quality Production of electric energy or power. Powerplants. Central stations TK1001-1841 Renewable energy sources TJ807-830
Acceso en línea:	https://doaj.org/article/2cb19bf47ae145e5b1454414742ecadf
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spelling	oai:doaj.org-article:2cb19bf47ae145e5b1454414742ecadf2021-11-27T00:00:16ZInterharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors2196-542010.35833/MPCE.2020.000241https://doaj.org/article/2cb19bf47ae145e5b1454414742ecadf2021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9465774/https://doaj.org/toc/2196-5420The interactions between randomly fluctuating power outputs from photovoltaic (PV) at the DC side and background voltage distortions at the AC side could generate interharmonics in the PV grid-connected system (PVGS). There is no universal method that can reveal the transmission mechanism of interharmonics and realize accurate calculation in different scenarios where interharmonics exist in the PVGS. Therefore, extended dynamic phasors (EDPs) and EDP sequence components (EDPSCs) are employed in the interharmonic analysis of the PVGS. First, the dynamic phasors (DPs) and dynamic phasor sequence components (DPSCs) are extended into EDPs and EDPSCs by selecting a suitable fundamental frequency other than the power frequency. Second, an interharmonic analysis model of the PVGS is formulated as a set of state space equations. Third, with the decoupling characteristics of EDPSCs, generation principles and interactions among the interharmonics in the PVGS are presented by the sequence components, and its correctness is verified by simulation and experiment. The presented model can be used to accurately calculate the interharmonics generated in the PVGS both at the AC and DC sides. Because of the decoupling among the EDPSCs, the set of state space equations can effectively describe the principle.Qing ZhongYangxin QiuYuming ZhaoHaifeng LiGang WangFushuan WenIEEEarticleDynamic phasor sequence component (DPSC)harmonicinterharmonicphotovoltaic grid-connected system (PVGS)power qualityProduction of electric energy or power. Powerplants. Central stationsTK1001-1841Renewable energy sourcesTJ807-830ENJournal of Modern Power Systems and Clean Energy, Vol 9, Iss 6, Pp 1540-1547 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Dynamic phasor sequence component (DPSC) harmonic interharmonic photovoltaic grid-connected system (PVGS) power quality Production of electric energy or power. Powerplants. Central stations TK1001-1841 Renewable energy sources TJ807-830
spellingShingle	Dynamic phasor sequence component (DPSC) harmonic interharmonic photovoltaic grid-connected system (PVGS) power quality Production of electric energy or power. Powerplants. Central stations TK1001-1841 Renewable energy sources TJ807-830 Qing Zhong Yangxin Qiu Yuming Zhao Haifeng Li Gang Wang Fushuan Wen Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors
description	The interactions between randomly fluctuating power outputs from photovoltaic (PV) at the DC side and background voltage distortions at the AC side could generate interharmonics in the PV grid-connected system (PVGS). There is no universal method that can reveal the transmission mechanism of interharmonics and realize accurate calculation in different scenarios where interharmonics exist in the PVGS. Therefore, extended dynamic phasors (EDPs) and EDP sequence components (EDPSCs) are employed in the interharmonic analysis of the PVGS. First, the dynamic phasors (DPs) and dynamic phasor sequence components (DPSCs) are extended into EDPs and EDPSCs by selecting a suitable fundamental frequency other than the power frequency. Second, an interharmonic analysis model of the PVGS is formulated as a set of state space equations. Third, with the decoupling characteristics of EDPSCs, generation principles and interactions among the interharmonics in the PVGS are presented by the sequence components, and its correctness is verified by simulation and experiment. The presented model can be used to accurately calculate the interharmonics generated in the PVGS both at the AC and DC sides. Because of the decoupling among the EDPSCs, the set of state space equations can effectively describe the principle.
format	article
author	Qing Zhong Yangxin Qiu Yuming Zhao Haifeng Li Gang Wang Fushuan Wen
author_facet	Qing Zhong Yangxin Qiu Yuming Zhao Haifeng Li Gang Wang Fushuan Wen
author_sort	Qing Zhong
title	Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors
title_short	Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors
title_full	Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors
title_fullStr	Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors
title_full_unstemmed	Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors
title_sort	interharmonic analysis model of photovoltaic grid-connected system with extended dynamic phasors
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/2cb19bf47ae145e5b1454414742ecadf
work_keys_str_mv	AT qingzhong interharmonicanalysismodelofphotovoltaicgridconnectedsystemwithextendeddynamicphasors AT yangxinqiu interharmonicanalysismodelofphotovoltaicgridconnectedsystemwithextendeddynamicphasors AT yumingzhao interharmonicanalysismodelofphotovoltaicgridconnectedsystemwithextendeddynamicphasors AT haifengli interharmonicanalysismodelofphotovoltaicgridconnectedsystemwithextendeddynamicphasors AT gangwang interharmonicanalysismodelofphotovoltaicgridconnectedsystemwithextendeddynamicphasors AT fushuanwen interharmonicanalysismodelofphotovoltaicgridconnectedsystemwithextendeddynamicphasors
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Interharmonic Analysis Model of Photovoltaic Grid-connected System with Extended Dynamic Phasors

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