考慮安全性的電網分級分區(qū)電壓無功控制研究

1、華中科技大學碩士學位論文考慮安全性的電網分級分區(qū)電壓無功控制研究姓名：李晨申請學位級別：碩士專業(yè)：電力系統及其自動化指導教師：涂光瑜20060429ABSTRACTWiththedevelopmentofpowersystemitbecomesmeimpotenttoreducethelossofpowerwk.Peoplegiveattentiontooptimalreactivepowergradually.Thetargetofc

2、ommonoptimalreactivepoweriseconomy.Whenthestructureofpowerwkbecomesmemecomplexthedemsofloadincreaserapidly，theaccidentsaboutsecurityhappenfrequently.Thiswillrefertosecuritywhichisthemostimpotentthingfthewholepowerwkthere

3、feitisnecessaryfoptimalreactivepowertoconsiderbotheconomysecurity.Thethesismakesabriefoverviewofthehistycurrentstatusoftheresearchonvoltvarcontrol.Themethodsofvoltvarcontroltheiradvantagedisadvantageareintroduced.Thethey

4、ofoptimalreactivepowerisdiscussed.Algithmofoptimalreactivepoweritsadvantagedisadvantageareanalyzed.Theresearchaboutsecuritytheindexofsecurityareintroduced.Indertomakethepowersystemmesecureseconomicthesecurityisaddedintoo

5、bjectfunctionoftheoptimalreactivepowertocombinewiththeeconomy.Thehierarchicalreactivepoweroptimizationconsideringsecurityonareaisproposed.Powerwkcanbedividedintouppergradelowergrade.Differentindexofsecurityassessmentisco

6、nsideredineachgradeaccdingitsacteristictoindicatethesecurestateofthisgrade.Thegradesaredividedtomanyareassubareas.Becauseofthedifferentacteristicineachareasubareatheirvaluesofthesecurityindexaredifferenttheindexofsecurit

7、yassessmentiscalculatedineachregionisusedinsecurityobjectfunctiontocompletetheoptimalreactivepower.Differentfmulaofsecurityassessmentcanbeusedindifferentgradetoquantizethestateofsecurityhencethehierarchicalreactivepowero