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Article: An improved approach for AC-DC power flow calculation with multi-infeed DC systems

TitleAn improved approach for AC-DC power flow calculation with multi-infeed DC systems
Authors
KeywordsAC-DC
HVDC transmission
multi-infeed DC systems
Newton-Raphson method
power flow analysis
Issue Date2011
PublisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=59
Citation
Ieee Transactions On Power Systems, 2011, v. 26 n. 2, p. 862-869 How to Cite?
AbstractAn improved approach based on sequential method for the AC-DC power flow calculation is proposed in this paper. This approach solves the convergence problem caused by voltage violations at AC buses during the power flow calculation for the DC subsystems. The convergence property can be significantly improved by adjusting the converter transformer tap position flexibly. In order to adjust the tap position of the converter transformer flexibly, three mainly modifications are proposed. Firstly, the equations for whole DC systems are decoupled into individual DC systems so as to easily figure out which DC system's tap position needs adjustment. Secondly, the tap ratio of a converter transformer is selected as an alternative state variable to replace the cosine of the control angle when necessary. Thirdly, the Newton-Raphson method is utilized to solve DC subsystems instead of the method using the linear equations. Furthermore, a theoretical analysis of the advantages of the proposed approach is also presented. Numerical simulations and practical applications show that the proposed approach meet the requirement of different system operating conditions and has advantages in terms of convergence and speed. The proposed approach has been successfully integrated into the Energy Management System (EMS) for China Southern Power Grid. © 2010 IEEE.
Persistent Identifierhttp://hdl.handle.net/10722/132174
ISSN
2015 Impact Factor: 3.342
2015 SCImago Journal Rankings: 4.126
ISI Accession Number ID
Funding AgencyGrant Number
Special Fund of the National Key Technology R&D Program of China2008BAA14B05
National Natural Science Foundation of China50807013
"111" of ChinaB08013
Funding Information:

This work was supported in part by the Special Fund of the National Key Technology R&D Program of China (2008BAA14B05) and National Natural Science Foundation of China (50807013) and in part by "111" Project (B08013) of China. Paper no. TPWRS-00165-2010.

References

 

DC FieldValueLanguage
dc.contributor.authorLiu, Cen_HK
dc.contributor.authorZhang, Ben_HK
dc.contributor.authorHou, Yen_HK
dc.contributor.authorWu, FFen_HK
dc.contributor.authorLiu, Yen_HK
dc.date.accessioned2011-03-21T08:58:58Z-
dc.date.available2011-03-21T08:58:58Z-
dc.date.issued2011en_HK
dc.identifier.citationIeee Transactions On Power Systems, 2011, v. 26 n. 2, p. 862-869en_HK
dc.identifier.issn0885-8950en_HK
dc.identifier.urihttp://hdl.handle.net/10722/132174-
dc.description.abstractAn improved approach based on sequential method for the AC-DC power flow calculation is proposed in this paper. This approach solves the convergence problem caused by voltage violations at AC buses during the power flow calculation for the DC subsystems. The convergence property can be significantly improved by adjusting the converter transformer tap position flexibly. In order to adjust the tap position of the converter transformer flexibly, three mainly modifications are proposed. Firstly, the equations for whole DC systems are decoupled into individual DC systems so as to easily figure out which DC system's tap position needs adjustment. Secondly, the tap ratio of a converter transformer is selected as an alternative state variable to replace the cosine of the control angle when necessary. Thirdly, the Newton-Raphson method is utilized to solve DC subsystems instead of the method using the linear equations. Furthermore, a theoretical analysis of the advantages of the proposed approach is also presented. Numerical simulations and practical applications show that the proposed approach meet the requirement of different system operating conditions and has advantages in terms of convergence and speed. The proposed approach has been successfully integrated into the Energy Management System (EMS) for China Southern Power Grid. © 2010 IEEE.en_HK
dc.languageengen_US
dc.publisherI E E E. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=59en_HK
dc.relation.ispartofIEEE Transactions on Power Systemsen_HK
dc.rightsIEEE Transactions on Power Systems. Copyright © IEEE.-
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rights©2011 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.-
dc.subjectAC-DCen_HK
dc.subjectHVDC transmissionen_HK
dc.subjectmulti-infeed DC systemsen_HK
dc.subjectNewton-Raphson methoden_HK
dc.subjectpower flow analysisen_HK
dc.titleAn improved approach for AC-DC power flow calculation with multi-infeed DC systemsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0885-8950&volume=26&issue=2&spage=862&epage=869&date=2011&atitle=An+improved+approach+for+AC-DC+power+flow+calculation+with+multi-infeed+DC+systems-
dc.identifier.emailHou, Y: yhhou@hku.hken_HK
dc.identifier.emailWu, FF: ffwu@eee.hku.hken_HK
dc.identifier.authorityHou, Y=rp00069en_HK
dc.identifier.authorityWu, FF=rp00194en_HK
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1109/TPWRS.2010.2068579en_HK
dc.identifier.scopuseid_2-s2.0-79955541898en_HK
dc.identifier.hkuros177871en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-79955541898&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume26en_HK
dc.identifier.issue2en_HK
dc.identifier.spage862en_HK
dc.identifier.epage869en_HK
dc.identifier.isiWOS:000289904200039-
dc.publisher.placeUnited Statesen_HK
dc.identifier.scopusauthoridLiu, C=7409785192en_HK
dc.identifier.scopusauthoridZhang, B=7406904407en_HK
dc.identifier.scopusauthoridHou, Y=7402198555en_HK
dc.identifier.scopusauthoridWu, FF=7403465107en_HK
dc.identifier.scopusauthoridLiu, Y=23501835200en_HK

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