蕭氏集團中低壓配電網改造中繼電保護故障分析與優(yōu)化設計畢業(yè)設計

1、三峽大學科技學院畢業(yè)設計題目蕭氏集團中低壓配電網改造中繼電保護故障分蕭氏集團中低壓配電網改造中繼電保護故障分析與優(yōu)化設計析與優(yōu)化設計學生姓名：學號：2010209239專業(yè)：發(fā)電廠及電力系統(tǒng)班級：20102092指導教師：評閱教師：完成日期二○一三年五月二十日WhenthearticleISectionIIthesensitivitycoefficientisnotenoughcanusecurrentvoltageinterlocki

2、ngspeedprotection.Thefirstsectionprotectionactiontimeisshtgoodspeedbuttheactioncurrentislargefulllengthcannotprotectcircuitprotectionrangeminimumsecondsectionprotectionhasashtactiontimecanprotectthelinelengthbutnotasabac

3、kupprotectionofadjacentelementsChapterIIIactioncurrentprotectionovertheprevioustwosmallbigprotectionrangefulllengthcanprotectthelinecanbeusedasbackupprotectionadjacentlinesensitivityisbestbuttheactiontimeislongerthespeed

4、difference.ThemainadvantageofusingthesectionISectionIIIIIpartstagecurrentprotectionissimplereliablecanmeettherequirementsoffastfaultclearingingeneral.Thegraduationprojectisthesubjectofanalysisoptimizationdesignofrelaypro

5、tectionfaultoflowvoltagedistributionwkreconstructionofXiaosgroup.Themaintaskistoensurethesafeoperationofpowergridtheneedfrelayprotectiondeviceconfigurationperfect.Accdingtothepowergridstructurethevoltagelevellinelengthop

6、eratingmodeloadpropertiesrequirementstorelayprotectionoflowvoltagedistributionwkXiaoShigroupdesignappropriate.Keywds:lowvoltagewkrelayprotectionsettingcalculationfaultanalysisdesignprinciple目錄目錄內容摘要內容摘要..................