The interaction between controllers is fatal to the whole control system.The design and its coordination of controllers is an important task in the application research of modern power system.In this paper

a modification solution of reactive power compensation system of substation coordinated with integrated automation system of substation is proposed with combination of presently mature static var compensator（SVC） technology both at home and abroad.Reactive voltage optimization control of reactive power compensation equipment（type FC-TCR SVC） of substation is carried out by the use of regional reactive power voltage optimization control system（AVC） and it can be completely accessed to the integrated automation system of substation

overcoming the problem of controller’s interaction between isolated operation and the shortcoming of previous substation in which reactive power compensation system can only be in the control strategies alone through the controller.The proposal and feasibility of control strategy is verified through simulation and it is shown that the simulation display system has perfect dynamic and static performance.