中壓配電網(wǎng)采用20kV電壓等級的技術(shù)經(jīng)濟研究.pdf

1、天津大學碩士學位論文中壓配電網(wǎng)采用20kV電壓等級的技術(shù)經(jīng)濟研究姓名：石帥申請學位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導(dǎo)教師：葛少云20090601ABSTRACTWiththerapiddevelopmentofeconomyandtheincreasingdemandofelectricalpowerinourcountrythetraditional10kVvoltageleveldoesnotmeetpowersupplyreq

2、uirementsintheregionswithhighloaddemandanddensitySOthe20kVvoltagelevelwhichismatureinothercountriescouldbeappliedinmedium—voltagedistributionsystemHowevertheproblemsofthesuperiorityandtheappropriatelocationof20kVpowersup

3、plystillneedcomprehensivetechnicalandeconomicresearchTheexistingresearchinthisfieldlacksareasonabletheoreticalmodel，SOtheanalysisandcalculationsarenotveryaccurateTherefore，throughawellestablishedanalysismodel，thesuitabil

4、ityof20kVindistributionsystemisprovensufficientlyinthefollowingthreerespectsinthispaper：technologyeconomicandsocialresourcesAndweobtainedsomeremarkableandpracticalconclusionsOnthebasisofthefullyresearchoftheapplicationof

5、20kVvoltagelevelathomeandabroad，thispaperproposestheboundaryconditionsandavarietyofindexesincludingtechnologyeconomicandsocialresources，thenanapproachwhichtaketheeconomicasthedecision—makingfactorandtheothertwoasreferenc

6、esispresentedFinallyatechnicalandeconomicanalysismodelof20kVindistributionvoltagelevelsisestablishedThecharacteristicsoftechnologyconsistofasinglecomparisonoftechnicalparameters，powerstructure，reliabilityandvoltagequalit

7、yApplying‘thesmallestannualcostofunitload”toeconomicanalysis，wecouldcalculatethetotalannualcostofsmallestunitload，takingthenetworkstructureoftheconnectionpatterninmediumvoltagelines，thesuperiorpowersource，HVlineandoutage

8、costintotheconsiderationFinallytheabove—mentionedtechnicalandeconomicanalysismodelisappliedtoanewareainourcountrywithspecificconditionAseriesofvoltagelevelsforthenewareaareobtained，andtheeconomicsensitivityanalysisiscarr

9、iedoutThetechnicalandeconomicanalysismodelinthispaperisprovedmoreadaptable，becauseofmorefactorsconsideredandreasonableindexesThismethodhasgreatmeaninginthecorrelativepracticeKEYWORDS：medium—voltagedistributionnetwork，vol