基于电网分区的配电网无功优化

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1、万方数据西南交通大学硕士研究生学位论文第1I页AbstractPowerdistributionsystemisattheendofthepowersystem．itconnectswithconsumersdirectly,SOitisimportanttomakesurethepowerdistributionsystemisinbothsafeandeconomicoperation．Themainpurposeofthereactiveoptimizationaboutdistributionnetworkistoachievetheb

2、alanceofreactivepower,reduceactivepowerloss，improvethequalityofpowersupplyandensurethesysteminsafeandstableoperationaccordingtodistributethereactivepowerreasonablyandeffectively．Asthedistributionnetworkiscomplex．whendealingwitllthereactivepoweroptimizationdirectly,itmayleadt

3、osomeproblems，suchaslargeamountcalculationandmoreiterations．Sobeforeoptimizingit，wecanmakethepowerdistributionnetworkintoseveralindependentareas，whichisalsocalleddistributionnetworkpartition，thenoptimizingeachareaatthesametime，becausethesubsystemissmallerthanoriginalsystem，t

4、heiterationswilldecreasewhenachievingtheoptimalvalue．Butintraditionalpartitionmethods，regionalpartitionjusttakesnaturalqualityimoaccount，ignoringtheelectricalcharacteristics；Graphpartitionmethodisnotconsistentwithpracticaloperationofdistributionnetwork；andclusteringpartition

5、cannotguaranteethatthereisenoughreactivepowerineveryarea．Therefore，itisnecessarytostudythedistributionnetworkpartitioning．Firstlyintroducethepresentsituationandthesignificanceaboutreactivepoweroptimizationofdistributionnetworkindetail，andmakeacontrastaboutallkindsofoptimizat

6、ionalgorithmsonbothdisadvantagesandadvantages，meanwhile，buildamathematicalmodelofreactivepoweroptimization；Thenaimingatthedefectsincurrentdistributionnetworkpartition，thispaperprocessesanewmethod：basedonthevoltage—reactivesensitivitymethod，defmeelectricaldistancematrix，thenr

7、egardthecentralpivotnodeastheinitialnode，calculatetheelectricaldistancebetweeneachnodeandcentralpivotnode，Onthebasisoftheelectricaldistance，emphasizingonconsideringwhetherthenodevoltagemeetingthedemandofpowerquality,atthesametime，putregionalattributeintoconsidering，thenre—pa

8、rtitionbycalculatingtheelectricaldistanceagainforthosenodeswhichdonotmeetth