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Generalized dynamical modeling of multiple photovoltaic units in a grid-connected system for analyzing dynamic interactions
journal contribution
posted on 2018-01-27, 00:00 authored by Tahsin Orchi, Apel MahmudApel Mahmud, Aman Maung Than OoAman Maung Than OoThis paper aims to develop the generalized dynamical model of multiple photovoltaic (PV) units connected to the grid along with the dynamic interaction analysis among different PV units. The dynamical models of multiple PV units are developed by considering three different configurations through which these PV units are connected to the grid. These configurations include: (a) the direct connection of multiple PV units to the grid; (b) the connection of multiple PV units to the grid through a point of common coupling (PCC); and (c) the connection of PV units without a PCC. The proposed modeling framework provides meaningful insights for analyzing dynamic interaction analysis where these interactions from other PV units are expressed in terms of voltages and line impedances rather than the dynamics of currents. The dynamic interactions among different PV units for all these configurations are analyzed using both analytical and simulation studies. Simulations are carried out on an IEEE 15-bus test system and dynamic interactions are analyzed from the total harmonic distortions (THDs) in the current responses of different PV units. Both analytical and simulation studies clearly indicate that the effects of dynamic interactions are prominent with the increase in PV units.
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Journal
EnergiesVolume
11Issue
2Article number
296Publisher
M D P I AGLocation
Basel, SwitzerlandPublisher DOI
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ISSN
1996-1073Language
engPublication classification
C Journal article; C1 Refereed article in a scholarly journalCopyright notice
2018, The AuthorsUsage metrics
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