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《高壓直流輸電換相失敗對交流線路保護(hù)的影響(一)含直流饋入的山東電網(wǎng)EMTDC建模與仿真.pdf》由會(huì)員上傳分享,免費(fèi)在線閱讀,更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、第39卷第24期電力系統(tǒng)保護(hù)與控制V_01.39No.242011年12月l6日PowerSystemProtectionandControlDec.16,2011高壓直流輸電換相失敗對交流線路保護(hù)的影響(一)含直流饋入的山東電網(wǎng)EMTDC建模與仿真于占勛,朱倩茹,趙成勇,張汝蓮,衛(wèi)鵬杰(1.山東省電力調(diào)度中心,山東濟(jì)南250001;2.電力系統(tǒng)保護(hù)與動(dòng)態(tài)安全監(jiān)控教育部重點(diǎn)實(shí)驗(yàn)室(華北電力大學(xué)),河北保定071003)摘要:寧東一山東直流輸電工程的投運(yùn)將對山東電網(wǎng)的安全穩(wěn)定運(yùn)行帶來挑戰(zhàn),交直流系統(tǒng)的相互作用研究尤顯重要。在
2、PSCAD環(huán)境下,對山東電網(wǎng)進(jìn)行了電磁暫態(tài)仿真建模,包括交流系統(tǒng)的等值簡化建模和寧東直流系統(tǒng)的詳細(xì)建模。對直流輸電系統(tǒng)的靜態(tài)響應(yīng)特性和常見故障時(shí)暫態(tài)響應(yīng)特性進(jìn)行仿真分析,結(jié)果表明直流輸電控制系統(tǒng)具有快速穩(wěn)定的響應(yīng)特性,驗(yàn)證了所建模型的正確性和有效性。并對整個(gè)山東電網(wǎng)的潮流分布和主要變電站母線短路電流大小進(jìn)行調(diào)節(jié)和校核,使之與PSASP環(huán)境下的數(shù)據(jù)基本一致,保證了所建模型的穩(wěn)態(tài)和動(dòng)態(tài)特性與實(shí)際電網(wǎng)基本相同。關(guān)鍵詞:高壓直流輸電;PSCAD/EMTDC;電磁暫態(tài)模型;靜態(tài)響應(yīng)特性;故障暫態(tài)響應(yīng)特性;潮流分布;短路電流Study
3、oninfluenceofHVDCcommutationfailureonAClineprotectionPartone:modelingandsimulationofShandongGridwithDCfeed—insystembasedonEMTDCYUZban.xun,ZHUQian.ru,ZHAOCheng.yong2,ZHANGRu.1ian,WEIPeng~ie(1.ShandongPowerDispatchingCenter,Jinan250001,China;2.KeyLaboratoryofPowerSy
4、stemProtectionandDynamicSecurityMonitoringandControl(NorthChinaElectricPowerUniversity),MinistryofEducation,Banding071003,China)Abstract:Ningdong-ShandongHVDCprojectwillbeputintooperation,whichisachallengetothesecurityandstabilityofShandongpowergrid,SOitbecomesmor
5、eimportanttoresearchAC-DCsysteminteraction.InPSCADenvironment,theelectromagnetictransientsimulationmodelofShandongpowergridisestablished,includingthesimplifiedmodelingofShandongACsystemandthedetailmodelingofNingdongHVDCsy~em.BasedontheDCmodel,thestaticresponsescha
6、racteristicsandtransientresponsecharacteristicsundercommonfaultsofDCtransmissionsystemaresimulatedandanalyzed.ThesimulationresultsshowthatcontrolsystemofFIVDCtransmissionsystemhassteadyandfastresl:Ionsecharacteristicsandalsoverifythecorrectnessandvalidityoftheesta
7、blishedmode1.ThepowerflowdislributioninShandongpowerdandthreephaseshortcircuitcurrentsof廿1ebusinmainstationsareadjustedandcheckedtoensurethatthedatagenerallyagreewiththecorrespondingdatainPSASPenvironmentandthesteady-stateanddynamiccharacteristicsoftheestablishedm
8、odelarenearlythesameasthoseinactualnetwork.Keywords:HVDC;PSCAD/EMTDC:electromagnetictransientmodel;staticresponsecharacteristics;faulttransientresponsec