Dynamic Resonance Sensitivity Analysis in Wind Farms

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Abstract

Unlike conventional power systems, where resonance frequencies are mainly determined by passive impedances, wind farms present a more complex situation, where the control systems of the power electronic converters introduce also active impedances. This paper presents an approach to find the resonance frequencies of wind farms by considering both active and passive impedances and to identify which bus of the wind farm has more contribution to resonance frequencies. In the approach, a wind farm is introduced as a Multi-Input Multi-Output (MIMO) dynamic system and the bus Participation Factors (PFs) are calculated by critical eigenvalue sensitivity analysis versus the entries of the MIMO matrix. The PF analysis locates the most exciting bus of the resonances, where can be the best location to install the passive or active filters to reduce the harmonic resonance problems. Time-domain simulation results in PSCAD software for a 400-MW wind farm shows that the presented analytical approach is able to find the critical bus for electrical resonance problems.
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Unlike conventional power systems, where resonance frequencies are mainly determined by passive impedances, wind farms present a more complex situation, where the control systems of the power electronic converters introduce also active impedances. This paper presents an approach to find the resonance frequencies of wind farms by considering both active and passive impedances and to identify which bus of the wind farm has more contribution to resonance frequencies. In the approach, a wind farm is introduced as a Multi-Input Multi-Output (MIMO) dynamic system and the bus Participation Factors (PFs) are calculated by critical eigenvalue sensitivity analysis versus the entries of the MIMO matrix. The PF analysis locates the most exciting bus of the resonances, where can be the best location to install the passive or active filters to reduce the harmonic resonance problems. Time-domain simulation results in PSCAD software for a 400-MW wind farm shows that the presented analytical approach is able to find the critical bus for electrical resonance problems.
Original languageEnglish
Title of host publicationProceedings of the 2017 IEEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
Number of pages5
PublisherIEEE Press
Publication dateApr 2017
ISBN (Print)978-1-5090-5339-1
DOI
StatePublished - Apr 2017
Publication categoryResearch
Peer-reviewedYes
Event2017 IEEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG) - Florianópolis, Brazil
Duration: 17 Apr 201720 Apr 2017

Conference

Conference2017 IEEE 8th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
LandBrazil
ByFlorianópolis
Periode17/04/201720/04/2017

    Research areas

  • Dynamic resonance, Power electronics converters wind farm, Sensitivity Analysis, Control system

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