Based on the characteristics of the distributed power flow controller

the established equivalent mathematical model reflects the inner 3rd harmonic power

which relies on the current injection and the power decoupling control. Series and shunt controllers with the fundamental of the 3rd harmonic power balance are designed. With the help of electromagnetic transient simulation function and user definition model function in advanced digital power system simulator(ADPSS)

the simulation platforms are respectively established for distributed power flow controller. Based on the electromagnetic transient experimental platform

the simulation results are compared between the equivalent model and the electromagnetic transient model

which verifies the correctness of the equivalent mathematical model of the distributed power flow controller. Finally

based on the user definition function in electromechanical transient model

the validity of the model is proved by the steady state power control experiments in the standard WSCC9 system and some 500 kV power grid system.