接地極電流場計算方法研究.pdf

1、上海交通大學碩士學位論文接地極電流場計算方法研究姓名：王乃盾申請學位級別：碩士專業(yè)：電氣工程指導教師：朱子述2002.12.1上海交通人學碩士學位論文接地極電流場計算方法研究THEOALCULAT10NMETHODRESEARCHOFTHEELEOTRICCURRENTFIELDOFTHEGROUNDlNGELEOTRODEABSTRAOTInthiSpaper，acalculationmodeloftheelectriCcurrent

2、fieldofthegroundingelectrodeiSestablishedandanalyzedinordertomeettheengineeringrequirementsIntheelectriCpowersystem，thecurrentofthegroundingelectrodepasstoinfinitivedistantplaceThesizeandthearrangementofthegroundingelect

3、rodewillnotonlyaffectthegroundresistanceandthepotentialofthegroundingconnection，butalSOaffectthesteppotentialdifferenceFurthermore，fordirectcurrentground，weshouldconcernthecurrentdensityonthegroundingelectrodesurfaceBein

4、gtheanodeofthecathodeprotectiOnsystem，thegroundelectrodeputcurrenttotheprotectedobject(egpipeline)oversollThus，thecurrentdensityonthesurfaceofthegroundingelectrodeandtheprotectedobjectiSconcerned，sinceitaffectsthelongevi

5、tyofthegroundingelectrodeandtheprotectionelfitiencyThestandardSimulativecurrentofgroundingelectrodeiStheuniformline—currentdensitybasedontheaverage—voltagemethodThiSpaperetablishesacalculationmodelofthecurrentfieldintow—

6、layersoilonthebasiSofequalvoltagedistribution，liststheelectriCpotentialequationsandgetsoutthecurrentdensitydistributionandgroundresiStanceTheauthorusestheiterativemethodtosolvetheequationsIthastheadvantageofquickspeedThu

7、s，itiSanefficientmethodincalculationofthe10ngpipelinecurrentfieldThentheauthorcomparesthedeep～wellelectrodewiththehorizontalelectrodewhi1ediSCUSSeSthecalculationmethodincaseofmultiplegroundingelectrodes，F(xiàn)inallY，calcu]are