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dc.contributor.authorSchönleber, Kevin
dc.contributor.authorRatés Palau, Sergi
dc.contributor.authorGomis Bellmunt, Oriol
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica
dc.identifier.citationSchönleber, K., Ratés, S., Gomis-Bellmunt, O. Analysis of reactive power strategies in HVDC-connected wind power plant clusters. "Wind energy", Desembre 2017, vol. 20, núm. 12, p. 1971-1982.
dc.description.abstract© 2017 John Wiley & Sons, Ltd. Offshore wind power plants (WPPs) built near each other but far from shore usually connect to the main grid by a common high-voltage DC (HVDC) transmission system. In the resulting decoupled offshore grid, the wind turbine converters and the high-voltage DC voltage-source converter share the ability to inject or absorb reactive power. The overall reactive power control dispatch influences the power flows in the grid and hence the associated power losses. This paper evaluates the respective power losses in HVDC-connected WPP clusters when applying 5 different reactive power control strategies. The case study is made for a 1.2-GW-rated cluster comprising 3 WPP and is implemented in a combined load flow and converter loss model. A large set of feasible operating points for the system is analyzed for each strategy. The results show that a selection of simulations with equal wind speeds is sufficient for the annual energy production comparison. It is found that the continuous operation of the WPPs with unity power factor has a superior performance with low communication requirements compared with the other conventional strategies. The optimization-based strategy, which is developed in this article, allows a further reduction of losses mainly because of the higher offshore grid voltage level imposed by the high-voltage DC voltage-source converter. Reactive power control in HVDC-connected WPP clusters change significantly the overall power losses of the system, which depend rather on the total sum of the injected active power than on the variance of wind speeds inside the cluster.
dc.format.extent12 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Energies::Energia eòlica
dc.subjectÀrees temàtiques de la UPC::Energies::Tecnologia energètica
dc.subject.lcshWind power
dc.subject.lcshElectric driving
dc.subject.lcshElectric power transmission
dc.subject.lcshWind power plants
dc.subject.otherGrid integration
dc.subject.otherHVDC transmission
dc.subject.otherLoad flow
dc.subject.otherPower system management
dc.subject.otherReactive power
dc.subject.otherVoltage control
dc.subject.otherWind power plants
dc.titleAnalysis of reactive power strategies in HVDC-connected wind power plant clusters
dc.subject.lemacEnergia eòlica
dc.subject.lemacControl elèctric
dc.subject.lemacEnergia elèctrica--Transmissió
dc.subject.lemacParcs eòlics
dc.contributor.groupUniversitat Politècnica de Catalunya. CITCEA - Centre d'Innovació Tecnològica en Convertidors Estàtics i Accionaments
dc.rights.accessOpen Access
dc.description.versionPostprint (author's final draft)
upcommons.citation.authorSchönleber, K., Ratés, S., Gomis-Bellmunt, O.
upcommons.citation.publicationNameWind energy

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