Research on the interface algorithm of power system electromechanical-electromagnetic hybrid simulation

With the increase of the number and capacity of HVDC, the influence of HVDC system on AC power network is more and more complex. Electromechanical transient simulation and electromagnetic transient simulation cannot meet the requirements of HVDC system study in large power grid. Therefore, research on power system electromechanical-electromagnetic hybrid simulation has very important significance. In this paper, we improve the algorithm of the interface based on the PSD-PSModel hybrid simulation. The optimization curve fitting algorithm based on FFT is proposed to improve the accuracy of the algorithm. The test method of interface algorithm is proposed, and the practical conclusion of PSD-PSModel interface is obtained.