Simulation method based on no-load impact of main transformer of RTDS

The invention relates to a simulation method for no-load impact of a main transformer of a power system, in particular to a simulation method based on no-load impact of a main transformer of an RTDS.The method comprises the following steps: establishing a simulation model of no-load impact based on RTDS transformer, wherein the generator model, the transformer model, the pi-type line and the equivalent model are connected in sequence; proposing a suppression strategy of power fluctuation caused by the no-load impact of the main transformer: adopting the phase-closing switch to ensure that each phase is closed at the ideal closing angle alpha equal to 90 degrees, and the generated magnetizing inrush current is the smallest. The invention establishes a simulation model of no-load impact ofthe main transformer based on the RTDS, and proposes a power oscillation suppression strategy method. While ensuring the high efficiency of the simulation model, an effective solution to the suppression problem is proposed, so