VoltageInstabilityofPowerSystemsandItsPreventiveMeasuresGuangdongPowerGridCorporationMaomingPowerSupplyBureauZhuGuangmingAbstractTheresearchonvoltagestabilityisveryimportanttothehealthyoperationofpowersystem.Inthispaperthestaticanddynamicmechanismofvoltageinstabilityofpowersystemisanalyzedandfromthatthemeasuresagainstvoltageinstabilityhavebeendiscussed.KeywordsVoltageinstabilityMechanismStability112IEEECIGRE#35⊕4-dQ/dV56OLTC735#-8/6MWMvarOLTCOLTCOLTCOLTCOLTCOLTC91031SVC2AVRs34HVDCOLTC51...2004.2..200533279-84.3..200125951-54.4..199919426-30.5..20052521-9.6MorisonGKGaoB.VoltageStabilityanalysisusingstaticanddynamicapproaches.IEEETransonPS.199383589-597.7..1991321-6.8..199822946-49.9.20021424-7.10KundurP...2002.1973-7⊕