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1、第38卷第10期電網(wǎng)技術(shù)Vol.38No.102014年10月PowerSystemTechnologyOct.2014文章編號:1000-3673(2014)10-2651-07中圖分類號:TM711文獻(xiàn)標(biāo)志碼:A學(xué)科代碼:470·4054舟山多端柔性直流輸電工程主接線方案設(shè)計吳方劼,馬玉龍,梅念,鄒欣(國網(wǎng)北京經(jīng)濟(jì)技術(shù)研究院,北京市西城區(qū)100052)DesignofMainConnectionSchemeforZhoushanFlexibleMulti-TerminalHVDCTransmissi
2、onProjectWUFangjie,MAYulong,MEINian,ZOUXin(StatePowerEconomicResearchInstitute,XichengDistrict,Beijing100052,China)ABSTRACT:Themainconnectiondesignisthepremisefor方案的設(shè)計過程,給出了典型的站內(nèi)主接線方案??勺鳛楹髏henengineeringdesignoftransmissionproject,andboththe續(xù)多端柔性直流輸電工程主接
3、線研究的參考。calculationofmaincircuitandthetype-selectionofequipment關(guān)鍵詞:柔性直流輸電;多端系統(tǒng);主接線;運(yùn)行方式shouldbecarriedoutunderthepremiseofdeterminingtheDOI:10.13335/j.1000-3673.pst.2014.10.006mainconnectionscheme.OtherwisethantraditionalHVDCtransmissionprojectsthereisnot
4、determinatemainconnection0引言formsfortheflexibleHVDCtransmissionproject,buta柔性直流輸電技術(shù)作為一種非常具有應(yīng)用前flexiblemainconnectionschemecanbeadoptedaccordingto景的輸電和配電解決方案,其在輸送有功功率的同theengineeringrequirement.ThemainconnectionschemesandthegroundingschemesfortheflexibleH
5、VDCtransmission時還可以獨(dú)立地控制無功功率,進(jìn)行動態(tài)補(bǔ)償,projectareresearched,andthefeaturesofdifferentmain穩(wěn)定交流母線電壓,為交流系統(tǒng)提供電壓支撐;connectionschemesarecomparedindetail;theadvantagesand柔性直流輸電換流站可以工作在無源換流的方defectsofdifferentgroundingschemesaswellastheirscopes式,不需要外加的換相電壓,可用于弱系統(tǒng)或無
6、ofapplicationarediscussed;besides,theconnectionmodes源系統(tǒng)供電;當(dāng)潮流反轉(zhuǎn)時,柔性直流輸電系統(tǒng)amongconverterstationsofmulti-terminalflexibleHVDC的直流電壓極性不變,直流電流方向反轉(zhuǎn),有利transmissionsystemanditsoperatingmodesareresearched于構(gòu)成并聯(lián)多端直流輸電系統(tǒng);柔性直流輸電系also.Takingthefive-terminalZhoushanfle
7、xibleHVDC統(tǒng)自身基本不需濾波和無功補(bǔ)償裝置,對交流系transmissiondemonstrationprojectforexample,accordingtoactualconditionsforZhoushanHVDCtransmissionprojectand統(tǒng)無功無特殊需求,非常適用于可再生能源并網(wǎng)、thesitesforconverterstations,thedesignofthemain分布式發(fā)電并網(wǎng)、孤島供電、大型城市電網(wǎng)供電connectionschemeissystemica
8、llyresearched,andthetypical等方面的應(yīng)用[1-5]。mainconnectionschemeinsidetheconverterstation,whichis柔性直流輸電的主接線方案也是靈活多變的,availableforreferencetothefollow-upresearchonthemain根據(jù)系統(tǒng)要求及接地點(diǎn)的選擇不同,可以采用單極connectionschemeformulti-terminalfle