中壓配電網(wǎng)狀態(tài)估計(jì)方法研究.pdf

1、學(xué)位論文創(chuàng)新性聲明本人聲明所呈交的學(xué)位論文是我個人在導(dǎo)師指導(dǎo)下進(jìn)行的研究工作及取得的研究成果。盡我所知，除了文中特別加以標(biāo)注和致謝中所羅列的內(nèi)容以外，論文中不包含其他人已經(jīng)發(fā)表或撰寫過的研究成果：也不包含為獲得西安石油大學(xué)或其它教育機(jī)構(gòu)的學(xué)位或證書而使用過的材料。與我一同工作的同志對本研究所做的任何貢獻(xiàn)均已在論文中做了明確的說明并表示了謝意。申請學(xué)位論文與資料若有不實(shí)之處，本人承擔(dān)一切相關(guān)責(zé)任。論文作者簽名：墨魚日期：20Lr62學(xué)位論

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3、themethodofmediumvoltagedistributionstateestimationSpeciality：PowerElectronicsandPowerDrivesName：LuYu(signature)叢塾InstructorD0ngzh蛐g(shù)zhuo(signatu嘲均凼學(xué)缸AbstractThedistributionnetworkmasterstationisoneofthemainpartsofthedist

4、ributionnetworkautomationsystemStateestimationinthemasterstationoftransmissiongridhasalreadybeenmatureandusedwidily111elimitationofmeasurementsofdistributionnetworkthatgainedbydistributionnetworkautomationsystemandthedif

5、ferentstructurewithtransmissiongridleadthestatemethodsinmastersationoftransmissiongridcannotbedirectlyappliedtodistributionnetworkmasterstationMediumvoltagedistributionnetworkisoneofthemostimportantpartsofthedistribution

6、networkanditsstatesestimationisthefundamentalfunctionofthemasterstationofdistributiobnetworkautomationsystemandthebasisofcomprehensiveanalysisandothercalculationsAlargeamountofresearchhasbeendoneonthemethodsofofdistribut

7、ionnetworkstateestimation，butthestudyofthemethodofmediumvoltagedistributionnetworkstateestimationaredeficientandhavenotbeenappliedpracticallyandwidelyTheresearchonthemethodsofmediumvoltagedistributionnetworkstateestimati

8、onisnecessaryInthispaperfirstlytheresearchstatusandthechallengeofstateestimationofmediumvoltagedistributionnetworkhavebeenanalyzedThethreephasemathematicalmodelofmediumvoltagedistributionnetworkisestablishedbytheprimaryc

9、onnectonmodeofmediumvoltagedistributionnetworkandtheelementsthreephasemodelsnleapplicationsandfunctions，andtheconfigurationsituationofmeasurementequipmentinthemeasurementsystemofmediumvoltagedistributionnetworkhavebeenex

10、plainedInordertoresolvethedeficiencyofmeasuremensthepseudo—measurementsareaddedThepseudomeasurementsaretheloadpowerandgainedbythecombinationofshort—termloadforecastingandultra—shorttermloadforecastingnledisadvantagesofWe

11、ightedLeastSquaresmethodappliedtothestateestimationmethodsofmediumvoltagedistributionnetworkarelisted111efeedersofmediumvoltagedistributionnetworkaredecoupledbycomprehensivenodestoformsubregionsnecurrentamplitudesthatpas

12、sthroughtheedgenodesofthesubregionarechoseasstatevariablesrnlesubregionsoffeederaregeneralizenodesFinallythecurrentamplitudesofthecomprehensivenodesinthewholefeederareestimatedbytheKCLbasedontheloadcurrentamplitudesthate