模糊控制與神經(jīng)網(wǎng)絡(luò)在電壓穩(wěn)定性問(wèn)題中的應(yīng)用研究.pdf

1、江蘇大學(xué)碩士學(xué)位論文模糊控制與神經(jīng)網(wǎng)絡(luò)在電壓穩(wěn)定性問(wèn)題中的應(yīng)用研究姓名：吳侗申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：系統(tǒng)工程指導(dǎo)教師：李醫(yī)民20061215江蘇大學(xué)碩士學(xué)位論文ABSTRACTThepowersystemisallessentiallynonlineardynamicsystem；itsstabilityhasbeenamajorresearchtopicVoltagestabilityisanimportantresearchaspe

2、ctinthestabilityofthepowersystemVoltagequalityisoneofthekeyindicatorstomeasurepowerqualityToensurethesystem’Seconomyandreducethelossofthepowersystem，mostofthepowercompaniesinstalltheonloadtapchanger(OLTC)transformerandpa

3、rallelcompensationcapacitorbanksinthesubstationByadjnstingtransformertaprunningpositionandparallelcompensationcapacitorswitching，itcallensurethesystem’svoltagestabilityandeconomicoperationatthesametimeInthepowersystemthe

4、rearethreeprimaryfactorsaffectedthevoltage’SstabilitythatistheparallelcapacitorscompensationOLTCandtheloadinherentnonlinearcharacteristicsrespectivelyThisthesispresentedafuzzycontrolmethodbasedonthecombinationcontrolofth

5、ecompensatorcapacitorbanksandtheOLTCmaintransformerfurnishedinlarge—scaleelectricsubstationByestablishingthemodelwithreactivepowerandvoltageparametersbasedonthecombinationcontrolofthecompensatorcapacitorbanksandtheOLTCma

6、intransformerfurnishedinlargescaleelectricsubstationtestedthefuzzycontrolsystem，Inthecontrolsystem，thechangeofvoltageandpowerfactorwerefuzzifiedastheinputvariableandtheOLTCandthecapacitorbankswerecontrolledbytheoutputsig

7、nalwhichWascalculatedafterfuzzyinferenceanddefuzzilyingTheresultprovesitsstabilityandvaliditybysimulationwhichcombinedwiththerealizedsubstationparametersByanalysisallfactorsthatimpactvoltagestabilitytheOLTCnegativeeffect

8、sandtheloadcharacteristicsaretwomajorreasonsThispaperdesignstheOLTCnegativeeffectsearlywarningsystemandtheloadcharacteristics’earlywarningsystemusingartificialneuralnetworktoolseparatelyInthedesignoftheartificialneuralne