Abstract
In this paper, the model of steam turbine and speed control system considering the influence of boiler and other equipment is established, and the load is simulated by upper step to verify the correctness of the model. Combined with the negative damping mechanism of power oscillation and forced power oscillation mechanism, the mathematical model of power oscillation caused by speed regulation system is derived, and several typical fault modes are summarized. For different fault modes, the corresponding simulation methods are given. Finally, Prony algorithm is used to identify the characteristic parameters of power response, and the measures to suppress power oscillation are analyzed and given.