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Conference Paper: Interaction analysis of vector- and droop-controlled VSCs in parallel

TitleInteraction analysis of vector- and droop-controlled VSCs in parallel
Authors
KeywordsPower conversion
Power system stability
Voltage control
Stability criteria
Damping
Issue Date2019
PublisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1003148
Citation
2019 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), Washington, DC, USA, 18-21 February 2019, p. 1-5 How to Cite?
AbstractVoltage source converters (VSCs) can be either vector-controlled to follow the variation of the primary energy sources, or droop-controlled to support the grid frequency/voltage. To meet both the local and system-level demand, hybrid operation of VSCs with the two control schemes is foreseen, while the dynamic interactions within such a system is less focused. This paper investigates the stability issues of a system with both types of VSCs in parallel connection to the main grid, particular attention is given to low-frequency outer power control dynamics. Net-damping criteria is used for qualitative stability evaluation. Comparative study with only vector-controlled case indicates that the hybrid controlled VSCs system can have a better stability for the smaller negative damping region presented. In addition, a potential low-frequency instability phenomenon, due to the interaction between the AC voltage control mode of vectored-controlled inverter and the droop control mode of droop-inverter, is identified by participation factor analysis. Detailed time-domain simulations are carried out to verify the above analysis.
Persistent Identifierhttp://hdl.handle.net/10722/290202
ISSN

 

DC FieldValueLanguage
dc.contributor.authorWang, D-
dc.contributor.authorLu, X-
dc.contributor.authorHou, Y-
dc.date.accessioned2020-10-22T08:23:28Z-
dc.date.available2020-10-22T08:23:28Z-
dc.date.issued2019-
dc.identifier.citation2019 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT), Washington, DC, USA, 18-21 February 2019, p. 1-5-
dc.identifier.issn2167-9665-
dc.identifier.urihttp://hdl.handle.net/10722/290202-
dc.description.abstractVoltage source converters (VSCs) can be either vector-controlled to follow the variation of the primary energy sources, or droop-controlled to support the grid frequency/voltage. To meet both the local and system-level demand, hybrid operation of VSCs with the two control schemes is foreseen, while the dynamic interactions within such a system is less focused. This paper investigates the stability issues of a system with both types of VSCs in parallel connection to the main grid, particular attention is given to low-frequency outer power control dynamics. Net-damping criteria is used for qualitative stability evaluation. Comparative study with only vector-controlled case indicates that the hybrid controlled VSCs system can have a better stability for the smaller negative damping region presented. In addition, a potential low-frequency instability phenomenon, due to the interaction between the AC voltage control mode of vectored-controlled inverter and the droop control mode of droop-inverter, is identified by participation factor analysis. Detailed time-domain simulations are carried out to verify the above analysis.-
dc.languageeng-
dc.publisherIEEE. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/conhome.jsp?punumber=1003148-
dc.relation.ispartof2019 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT)-
dc.rightsInnovative Smart Grid Technologies (ISGT) Conference. Copyright © IEEE.-
dc.rights©2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.-
dc.subjectPower conversion-
dc.subjectPower system stability-
dc.subjectVoltage control-
dc.subjectStability criteria-
dc.subjectDamping-
dc.titleInteraction analysis of vector- and droop-controlled VSCs in parallel-
dc.typeConference_Paper-
dc.identifier.emailHou, Y: yhhou@hku.hk-
dc.identifier.authorityHou, Y=rp00069-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1109/ISGT.2019.8791670-
dc.identifier.scopuseid_2-s2.0-85071428191-
dc.identifier.hkuros316718-
dc.identifier.spage1-
dc.identifier.epage5-
dc.publisher.placeUnited States-

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