With the advancement of the interconnection process of power grid

the regional power grids are connected as a whole by tie lines

in which

the unbalance of power flow distribution during the operation of the

multiple parallel lines may be occurred and the safe and stable operation of the power system may be threatened. In view of this issue

a topological structure of electromagnetic power flow controller composed of voltage phase shifter and voltage regulator in series is proposed. The power flow regulation mechanism is analyzed

and an electromagnetic power flow controller control strategy for power balance regulation of multiple parallel lines is proposed. The three-phase power system circuit equation is transformed into

dq

coordinates through coordinate transformation to achieve independent control of active and reactive power of the regulating circuit. The simulation results of the two-line in parallel show that the proposed control strategy can be well applied to the electromagnetic power flow controller. It has a good regulation effect for the power system with load fluctuation and small regulation error. The adoption of electromagnetic power flow controller has a high economical efficiency and durability.