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Article: Enhancing Flexibility of An Islanded Microgrid with Electric Springs

TitleEnhancing Flexibility of An Islanded Microgrid with Electric Springs
Authors
KeywordsCritical loads
Electric spring
Model predictive control
Renewable energy
Water heating system
Issue Date2017
PublisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=5165411
Citation
IEEE Transactions on Smart Grid, 2017, v. 10 n. 1, p. 899-909 How to Cite?
AbstractAn electric spring (ES) is effective in enhancing the operational flexibility and facilitating renewable energy integration. An ES can determine the operation status of the connected noncritical loads (NCLs) by adjusting its output voltage. It is possible to use NCLs as operation resources for renewable integration. In this paper, a model predictive control (MPC) based strategy is proposed to dispatch ESs with a water heating system (WHS) used as an NCL in an islanded microgrid to accommodate fluctuating renewables. Critical loads (CLs) in the microgrid can also benefit from ESs by obtaining a reliable supply voltage with smaller deviations than other loads. The CL is modeled using a ZIP static load model, which is commonly used to represent loads of a power system. The temperature constraint of the WHS and the ramping constraint of a diesel generator are consider and can be effectively managed by the proposed MPC strategy. Finally, the capabilities of NCLs with ESs to enhance operational flexibility are studied through sensitivity analyses with different ramping abilities of the microgrid.
Persistent Identifierhttp://hdl.handle.net/10722/247410
ISSN
2017 Impact Factor: 7.365
2015 SCImago Journal Rankings: 4.784
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLiang, L-
dc.contributor.authorHou, Y-
dc.contributor.authorHill, DJ-
dc.date.accessioned2017-10-18T08:26:48Z-
dc.date.available2017-10-18T08:26:48Z-
dc.date.issued2017-
dc.identifier.citationIEEE Transactions on Smart Grid, 2017, v. 10 n. 1, p. 899-909-
dc.identifier.issn1949-3053-
dc.identifier.urihttp://hdl.handle.net/10722/247410-
dc.description.abstractAn electric spring (ES) is effective in enhancing the operational flexibility and facilitating renewable energy integration. An ES can determine the operation status of the connected noncritical loads (NCLs) by adjusting its output voltage. It is possible to use NCLs as operation resources for renewable integration. In this paper, a model predictive control (MPC) based strategy is proposed to dispatch ESs with a water heating system (WHS) used as an NCL in an islanded microgrid to accommodate fluctuating renewables. Critical loads (CLs) in the microgrid can also benefit from ESs by obtaining a reliable supply voltage with smaller deviations than other loads. The CL is modeled using a ZIP static load model, which is commonly used to represent loads of a power system. The temperature constraint of the WHS and the ramping constraint of a diesel generator are consider and can be effectively managed by the proposed MPC strategy. Finally, the capabilities of NCLs with ESs to enhance operational flexibility are studied through sensitivity analyses with different ramping abilities of the microgrid.-
dc.languageeng-
dc.publisherInstitute of Electrical and Electronics Engineers. The Journal's web site is located at http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=5165411-
dc.relation.ispartofIEEE Transactions on Smart Grid-
dc.rightsIEEE Transactions on Smart Grid. Copyright © Institute of Electrical and Electronics Engineers.-
dc.rights©20xx 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.subjectCritical loads-
dc.subjectElectric spring-
dc.subjectModel predictive control-
dc.subjectRenewable energy-
dc.subjectWater heating system-
dc.titleEnhancing Flexibility of An Islanded Microgrid with Electric Springs-
dc.typeArticle-
dc.identifier.emailLiang, L: lliang@eee.hku.hk-
dc.identifier.emailHou, Y: yhhou@hku.hk-
dc.identifier.emailHill, DJ: dhill@eee.hku.hk-
dc.identifier.authorityHou, Y=rp00069-
dc.identifier.authorityHill, DJ=rp01669-
dc.identifier.doi10.1109/TSG.2017.2754545-
dc.identifier.scopuseid_2-s2.0-85030625818-
dc.identifier.hkuros280708-
dc.identifier.volume10-
dc.identifier.issue1-
dc.identifier.spage899-
dc.identifier.epage909-
dc.identifier.isiWOS:000455180900082-
dc.publisher.placeUnited States-

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