تجاوز إلى المحتوى الرئيسي

NovelandsimpleschemeforMicro-Gridprotectionbyconnectingits
loads neutralpoints:AreviewonMicro-Gridprotectiontechniques

ملخص البحث
ThelowfaultcurrentphenomenainthestandaloneMicro-Grid(MG)isaresultofelectronicinterfacingof theMGDistributedGenerators(DGs).DuetolowfaultcurrentphenomenaonthestandaloneMG,thereis a difficultyindifferentiatingbetweenthefaultdisturbanceandtheoverloadconditions.Thispaperpre- sentsacomprehensivesurveyaboutthestandaloneMGprotectionissuesandschemes.Allnewtrendsand schemesavailableandsuggestedforMGprotectionduringboththegridconnectedandthestandalone modesaredescribedindetails.Also,thispaperpresentsasimpletechniqueforsolvingtheproblemsdueto lowfaultcurrentphenomenainthestandaloneMG.Theproposedtechniqueisimplementedbycon- nectingallMGloadsneutralpointswiththeMGearthingsystemneutralline.Theproposedtechnique suppressesthetouchvoltagesatallMGbuses.Also,theproposedschemeresultsindoublingtheMGfault currentinthestandalonemode.Consequently,theMGprotectiondevicescaneasilydetectanddiffer- entiatebetweenthefaultdisturbancesandtheoverloadconditions.Also,theproposedtechniquedamps andsuppressesthetouchvoltagenotonlyatfaultlocationbutalsothroughalltheMGnetworkbuses.The mostcommonfaulttypes(singlephasetogroundanddoublephasetoground)areanalyzedindetails. Resultsprovedthat,employingtheproposedtechniqueabletosolvethelowfaultcurrentandthetouch voltagesproblemsfromtheirroots.Noadditionalhardwareisrequiredforimplementingthenewscheme. Theproposedtechniqueisverysimpleandhighlyeconomicalattractive.
مؤلف البحث
Rashad M.Kamel a,b,n, MohammadA.Alsaffar a, M.K.Habib a
مجلة البحث
RenewableandSustainableEnergyReviews
صفحات البحث
pp. 931–942
الناشر
NULL
تصنيف البحث
1
عدد البحث
NULL
موقع البحث
NULL
سنة البحث
2016