In suppressing the transient surge of power system

phase-controlled is more economical and advanced than traditional methods

such as installing a closing resistor or a lightning arrester. With the application and popularization of smart substation technology

new requirements are proposed for phase-controlled. Firstly the paper introduces the realization of process level interface

data communication mode and equipment installation mode of the intelligent phase-controlled equipment. Then two different implementation models of intelligent phase-controlled equipment are proposed based on the functional integration degree of intelligent components

and the modeling of phase-controlled equipment based on IEC 61850 and information interactive mode are discussed. Finally

this paper gives a brief summary of key technology of deviation control and prospects the advanced applications.