雷擊時(shí)地下電纜過電壓的仿真研究

1、華中科技大學(xué)碩士學(xué)位論文雷擊時(shí)地下電纜過電壓的仿真研究姓名：莊麗申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：高電壓與絕緣技術(shù)指導(dǎo)教師：劉潯20101223華中科技大學(xué)碩士學(xué)位論文華中科技大學(xué)碩士學(xué)位論文IIABSTRACTSincetimeimmemiallightningaccidentsoccursfrequently.Varioustypesoftransmissionequipmentelectronicequipmenthavebeeninven

2、tedwiththedevelopmentofsciencetechnology.Howevertheseobjectsaremelessaffectedbylighting.Fromthe“field““road“anglescrespondingfmulashavebeenobtainedbythestudiesofdifferentequipmentstrikedbylighting.Cablesarealsovulnerable

3、totheimpactoflightning.Thegeneralapproachisfromthe“road“anglethatisthecablecircuitisequivalenttoresistanceinductancecapacitanceconductance.wewillobtainthecrespondingequationbyanalysingthelightningelectromagicfieldanumber

4、ofmathematicalfmulasphysicsfmulasengineeringfmulas.Inadditionsomefmulasaregivendirectly.wecandeterminewhetherthecableisstruckbylightningnot.Onthebasisofthesetheeticalstudiesfcommunicationcablewehaveestablisheditsundergro

5、undlocationanalysedlightninginducedovervoltagecalculation.Thentheprogrammingflowtisshowedwehaveprogrammedmadesomesimulation.Finallywecontrast、analysetheresultsofcalculationsimulationdiscussvariousfactsoflightninginducedo

6、vervoltage.Thelightningprotectionofcommunicationcablesareproposed.Fopticalcablewehaveestablisheditsundergroundlocationshowedflowtwhichcanjudgetheopticalcablecandestroybylightingnot.Finallypreventionmeasuresofopticalcable

7、faultareputfward.Inthispapermodelsofseveralgroundingmethodsfpowercablesareestablished.Generatingmechanismcalculationfmulaofovervoltageinsecuritylayerareanalyzedprogrammingflowtofthefmulaislisted.ThewriteruseFTRANprogramm