Static-dynamic Performance Analysis of Flexible Power Transformer

Aiming at the problem that intermittent wind power and randomness of wind speed will lead to frequent and large fluctuation of grid connected voltage in large-scale wind power grid connected scenarios, a flexible power transformer based on power electronic devices is proposed. Firstly, the topology of flexible power transformer is proposed and its operation principle is analyzed; Secondly, its mathematical model is constructed and the corresponding control strategy is proposed; Finally, by building a flexible power transformer simulation model and analyzing the simulation results of its voltage regulation under wind speed changes, the rationality of the proposed flexible power transformer topology and the effectiveness of the flexible power transformer in regulating wind speed changes and grid connected voltage fluctuations are verified.