With　the　wide　application　of　synchronized　phase　measurement　unit(PMU)　in　power　system,　the　wide-area　measurement　system(WAMS)　has　enabled　the　use　of　a　combination　of　measured　signals　from　remote　location　for　global　control　purpose.　Since　in　nature　power　system　stability　is　related　to　all　generators,　the　introduction　of　wide-area　information　into　nonlinear　integrated　control　can　improve　the　dynamic　performance　of　power　system　and　enhance　power　system　stability.　According　to　multivariable　inverse　system　theory,　this　paper　verifies　the　invertibility　of　excitation　and　turbine　control　system　for　a　turbogenerator　under　the　center　of　inertia　reference　frame(COI),　and　presents　a　novel　nonlinear　global　integrated　controller　based　on　wide-area　information　including　the　on-line　measured　center　of　rotor　angle　and　total　unbalanced　power.　This　controller　makes　the　relative　rotor　angle　to　the　center　of　angle　return　to　its　pre-disturbance　value　by　modulating　excitation　voltage　and　turbine　valve,　and　is　considered　as　a　＂control　the　local　to　serve　the　global＂　controller.　Digital　simulation　demonstrates　that　the　four-machine　power　system　under　the　nonlinear　global　integrated　control　has　less　settling　time,　swing　times,　oscillatory　peak　value　and　more　critical　clear　time　and　better　transient　stability　performance　than　that　under　PID　control　and　nonlinear　decentralized　integrated　control.