大型風電場對靜態(tài)電壓穩(wěn)定性的影響研究.pdf

1、天津大學碩士學位論文大型風電場對靜態(tài)電壓穩(wěn)定性的影響研究姓名：劉春曉申請學位級別：碩士專業(yè)：電力系統(tǒng)及其自動化指導教師：王成山20090601ABSTRACTAsoneformofrenewablepowerwindpowerhasthemostmaturetechnologyanddevelopedrapidlyinrecentyearsHoweverwindpowerisintermittentandnonschedulablewh

2、ileprovidingcleanenergyThesefeatureswillposeanegativeeffectonconventionalpowersystemAlso，windfarmswillabsorbconsiderableamountofreactivepowerfromsystemwhilesendingoutactivepowerandduetothecloserevalenceofvoltagestability

3、andreactivepowerlarge—scalewindfarmshavecertaininfluenceonvoltagestabilityThisthesisfocusesonstaticvoltagestabilityconsideredwithlarge—scalewindfarms，mainworkisasfollowing：1Currentwindfarmmodelsusedinpowerflowanalysisare

4、discussedandcompared，andthemodelofasynchronouswindgeneratoranddoublyfedwindgeneratorusedinthisthesisisestablishedrespectively2Animprovedcontinuouspowerflowmethodconsideringthebehaviorofselfcuttingoflargescalewindfarmsisp

5、roposedThisalgorithemimprovedthestepsizecontrolsegmentofconventionalcontinuouspowerflowmethodandcouldobtainaccuratelocationwhereeachoneofwindfarmshappenstoselfcutSOtoinsuretheveracityofvoltagestabilitymarginresultandrela

6、tedinformation3Byusingtheabovemethod，staticvoltagestabilityofacertainareaiscarefullystudied，andtheimprovedcontinuouspowerflowmethodisprovedtobeeffectiveFuthermore，controloptionsthatcouldimprovestaticvoltagestabilityofthi

7、sareaisanalysed4Maximumpenetrationlevelofwindpowerofacertainareaiscalculated，whichcouldbeusefulinwindpowerplanningandconstructioninthisareaKEYWORDS：LargescalewindfarmStaticvoltagestabilityContinuouspowerflowmethod，Maximu