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1、機(jī)電振蕩模式屬性和機(jī)組參與特性的量化剖析研究*榮娜,李澤滔,韓松(貴州大學(xué)電氣工程學(xué)院,貴陽550025)摘要:機(jī)電振蕩模式屬性和機(jī)組參與特性的量化剖析是大規(guī)?;ヂ?lián)電力系統(tǒng)安全穩(wěn)定運(yùn)行的態(tài)勢感知理論的基礎(chǔ)性問題。為此本文借助相對局域性量化指標(biāo)厶心研究了不同邊界條件,涉及發(fā)電機(jī)類型、區(qū)間潮流以及旋轉(zhuǎn)備用,對于機(jī)電模式的局域性和機(jī)組參與特性影響。利用PSS/EV33仿真工具,經(jīng)典的2區(qū)4機(jī)系統(tǒng)及其變化案例的仿真結(jié)果說明,首先,厶厶指標(biāo)可量化機(jī)電振蕩模式屬性,有潛力用于跟蹤區(qū)域模式或局部模式的演化。其
2、次,形如負(fù)荷和發(fā)電的波動以及雙饋式感應(yīng)發(fā)電機(jī)(DFIG)的引入產(chǎn)生的系統(tǒng)邊界條件變化會使得發(fā)電機(jī)參與度發(fā)生變化,進(jìn)而可能使得機(jī)電模式屬性從局部模式向區(qū)域模式轉(zhuǎn)變,反之亦然。最后,DFIG接入?yún)^(qū)域電網(wǎng)后,預(yù)測區(qū)間模式中最大參與度的發(fā)電機(jī)是可能的。關(guān)鍵詞:機(jī)電振蕩;模式屬性量化;相對局域性指標(biāo);參與特性;模式演化中圖分類號:TM711文獻(xiàn)標(biāo)識碼:A文章編號:1001-1390(2016)00-0000-00Researchofthequantificationanalysisonmodalprope
3、rtyandparticipationfeatureinvolvingelectromechanicaloscillationmodeRongNa,LiZetao,HanSong(DepartmentofElectricalEngineering,GuizhouUniversity,Guiyang550025,China)Abstract:Fordevelopingthesituationalawarenesstechnologyforthelargescalepowersystems,itis
4、importanttostudythequantificationanalysisaboutthepropertyofelectromechanicaloscillationmodeandtheparticipationfeatureofgenerator.Therefore,thispaperpresentsanimprovedquantitativeindicatorfortherelativelocalnessindexofelectromechanicaloscillationmode,
5、denotedby厶也丫?Thentheimpactsofdifferentboundaryconditionssuchasgeneratortype,powerflowoftieline,andspinningreservecapacityonthemodallocalnessofandtheparticipationfeatureofgeneratorelectromechanicaloscillationmodehavebeenstudied.Thecasestudieshavebeenc
6、arriedoutonaKundur4-machineand2-areasystemanditsvariants,utilizedbyPSS/EV33,andtheresultsverifytheeffectivenessof厶厶whichcouldbehelpfultotracktheevolutionofinter-areamodeorlocalmode.Moreover,itindicatesthattheparticipationfeatureofgeneratorwouldbechan
7、gedandconsequentlymodalpropertywouldbetransformedfromlocalmodetointer-areamodeorviceversaiftheboundaryconditionissignificantlyvariedforinstancethefluctuationsfromloadconsumingorpowergeneratingandtheintegrationofdoubly-fedinductiongenerator(DFIG),andv
8、iceversa?Furthermore,itispossibletopredictthegeneratorwithmaximumparticipationforinter-areamodewhentheDFIGisintegratedintoaregionalpowergrid?Keywords:electromechanicaloscillation,quantificationofmodalproperty,relativelocalnessindex,participationfeatu