Reliability evaluation of smart distribution grids

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Kazemi, Shahram 2012-08-31T07:40:45Z 2012-08-31T07:40:45Z 2011
dc.identifier.isbn 978-952-60-4240-4 (printed)
dc.identifier.isbn 978-952-60-4241-1 (PDF)
dc.identifier.issn 1799-4934
dc.description.abstract The term "Smart Grid" generally refers to a power grid equipped with the advanced technologies dedicated for purposes such as reliability improvement, ease of control and management, integrating of distributed energy resources and electricity market operations. Improving the reliability of electric power delivered to the end users is one of the main targets of employing smart grid technologies. The smart grid investments targeted for reliability improvement can be directed toward the generation, transmission or distribution system level. However, radial operating status, aging infrastructures, poor design and operation practices and high exposure to environmental conditions have caused the electric power distribution systems to be addressed as the main contributor to the customer reliability problems. Therefore, developing a smart distribution grid can be an attractive reliability enhancement solution for the electric utilities. Whenever the targeted reliability enhancement solutions are limited to the simple conventional solutions, the available reliability assessment techniques can be easily used for purposes of the value-based reliability planning. However, the electric utilities face a challenge when the reliability enhancement solutions include sophisticated measures such as those of the smart grid technologies. Generally, the available reliability assessment approaches cannot be employed directly for such purposes. In this situation, it is necessary to develop a reliability evaluation approach for predicting the reliability performance of the electric power distribution systems when employing such sophisticated solutions. A novel approach is proposed and demonstrated in this thesis for reliability assessment of an electric power distribution system when employing the advanced reliability enhancement technologies. In the proposed reliability evaluation approach, the overall impacts of the targeted reliability enhancement solutions on the sustained interruptions, momentary interruptions and voltage sags experienced by the customers are taken into account. The results of various reliability case studies directed in this thesis show that employing a suitable set of the smart grid technologies in the functional zone of an electric power distribution system can virtually mitigate all the reliability indices. It is also possible to reduce the range of variation of the reliability indices among different customers. In addition, there is a possibility to reduce the burden on the utility repair crews. en
dc.format.extent 147
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Aalto University, School of Electrical Engineering en
dc.relation.ispartofseries Aalto University publication series. Doctoral dissertations, 69/2011 en
dc.subject.other Electrical engineering
dc.title Reliability evaluation of smart distribution grids en
dc.type G4 Monografiaväitöskirja fi Sähkötekniikan korkeakoulu fi
dc.contributor.department Sähkötekniikan laitos fi
dc.contributor.department Department of Electrical Engineering en
dc.subject.keyword distribution automation en
dc.subject.keyword distribution substation automation en
dc.subject.keyword distance to fault estimator en
dc.subject.keyword dynamic voltage restorer en
dc.subject.keyword feeder automation en
dc.subject.keyword fault current limiter en
dc.subject.keyword fault locator scheme en
dc.subject.keyword fault passage indicator en
dc.subject.keyword electric power distribution system en
dc.subject.keyword fault management en
dc.subject.keyword reliability evaluation en
dc.subject.keyword smart grid en
dc.subject.keyword sub-transmission substation automation en
dc.subject.keyword voltage sag en
dc.identifier.urn URN:ISBN:978-952-60-4241-1
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (monografia) fi
dc.type.ontasot Doctoral dissertation (monograph) en
dc.contributor.supervisor Lehtonen, Matti, Prof.
dc.contributor.supervisor Fotuhi-Firuzabad, Mahmud, Prof., Sharif University of Technology

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