Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality

 

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dc.contributor.advisor Folly, Komla A en_ZA
dc.contributor.advisor Khan, Mohamed Azeem en_ZA
dc.contributor.author Ntsadu, Ntlahla en_ZA
dc.date.accessioned 2018-01-23T11:54:52Z
dc.date.available 2018-01-23T11:54:52Z
dc.date.issued 2017 en_ZA
dc.identifier.citation Ntsadu, N. 2017. Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality. University of Cape Town. en_ZA
dc.identifier.uri http://hdl.handle.net/11427/26891
dc.description.abstract Wind power generation has gained a large share in the renewable energy market over the past few years. This study investigates the impact of large scale penetration of permanent magnet synchronous generator (PMSG) based wind turbines on power quality of the grid. PMSGs are attractive due to the absence of a gearbox in the drive-train, which results in lower maintenance costs and higher reliability. Moreover, the advancements in power electronics have facilitated PMSGs to generate optimal power at varying wind speed conditions. This is achieved through the use of maximum power point tracking algorithms. The drawbacks of PMSG-based wind energy systems are that they inject harmonics into the network and cause flicker as well as other power quality issues. Despite these disadvantages, the grid code requires that PMSGs stay connected to the grid even under grid disturbances. This is because the reactive power control capability of PMSG-based wind energy systems can actually assist with voltage support. It will be shown in this study that disconnecting large scale PMSGs based wind turbines during grid disturbances has a detrimental effect on transient stability of the grid. This study will show that PMSG-based wind energy systems improve transient stability and assist in voltage support through reactive power control. Moreover, the impacts of large scale PMSG based wind turbines on power quality of the grid can be reduced by various means, which are also addressed in the study. en_ZA
dc.language.iso eng en_ZA
dc.subject.other Electrical Engineering en_ZA
dc.subject.other Permanent magnet en_ZA
dc.subject.other synchronous generators en_ZA
dc.subject.other renewable energy en_ZA
dc.subject.other power quality en_ZA
dc.title Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality en_ZA
dc.type Master Thesis
uct.type.publication Research en_ZA
uct.type.resource Thesis en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Engineering and the Built Environment
dc.publisher.department Department of Electrical Engineering en_ZA
dc.type.qualificationlevel Masters
dc.type.qualificationname MSc (Eng) en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Ntsadu, N. (2017). <i>Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality</i>. (Thesis). University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering. Retrieved from http://hdl.handle.net/11427/26891 en_ZA
dc.identifier.chicagocitation Ntsadu, Ntlahla. <i>"Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality."</i> Thesis., University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 2017. http://hdl.handle.net/11427/26891 en_ZA
dc.identifier.vancouvercitation Ntsadu N. Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality. [Thesis]. University of Cape Town ,Faculty of Engineering & the Built Environment ,Department of Electrical Engineering, 2017 [cited yyyy month dd]. Available from: http://hdl.handle.net/11427/26891 en_ZA
dc.identifier.ris TY - Thesis / Dissertation AU - Ntsadu, Ntlahla AB - Wind power generation has gained a large share in the renewable energy market over the past few years. This study investigates the impact of large scale penetration of permanent magnet synchronous generator (PMSG) based wind turbines on power quality of the grid. PMSGs are attractive due to the absence of a gearbox in the drive-train, which results in lower maintenance costs and higher reliability. Moreover, the advancements in power electronics have facilitated PMSGs to generate optimal power at varying wind speed conditions. This is achieved through the use of maximum power point tracking algorithms. The drawbacks of PMSG-based wind energy systems are that they inject harmonics into the network and cause flicker as well as other power quality issues. Despite these disadvantages, the grid code requires that PMSGs stay connected to the grid even under grid disturbances. This is because the reactive power control capability of PMSG-based wind energy systems can actually assist with voltage support. It will be shown in this study that disconnecting large scale PMSGs based wind turbines during grid disturbances has a detrimental effect on transient stability of the grid. This study will show that PMSG-based wind energy systems improve transient stability and assist in voltage support through reactive power control. Moreover, the impacts of large scale PMSG based wind turbines on power quality of the grid can be reduced by various means, which are also addressed in the study. DA - 2017 DB - OpenUCT DP - University of Cape Town LK - https://open.uct.ac.za PB - University of Cape Town PY - 2017 T1 - Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality TI - Impact assessment of large-scale penetration of permanent magnet synchronous generators on power quality UR - http://hdl.handle.net/11427/26891 ER - en_ZA


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