!!,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,!,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,1,,I,/,V:,,TZ,Jl..J...01,,,T:,,,,T,,,1,I,I,I,I,I,,,n,,,,,,,,,,,,,,,,,,I,,,,,,PSS,,,,,l,0.880.83:,,,,,,,,,,,19952,,1988.20~453,1991.67~804AndersonPM,FouadAA.Powersystemeontrolandstability.TheJowaStateUniversityPress,Ames,Jows,USA:1977.77~1005,1983.213~231ImProvementonStabilityofElectriePowerSystembyCoordinatedControlofSteamTurbine,HohaiUniv.Nanjing210098)AbstraetThroughinflueneeanalysisofeonventionalsteamturbineandgeneratoreontrolontransientstabilityofpowersystems,thispaperpresentsaneweontrolstrategyforstabilityimprovement,1.e.,theleadinginphaseeompensationforbotheleetriealandturbinesidesatthesametime,andtheeoordinationoftheiraetions.Thevalidityandfeasibilityofthemethodhavebeenverifiedbythesimulatedtestsresults.KeywordsPowersystem;transientstabilityanalysis;coordinatedeontrol