1. College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;2. Electric Power Research Institute of State Grid Zhejiang Electric Power Company, Hangzhou 310014, China

The validation of synchronous generator parameters critically affects the effectiveness of power system dynamic simulation and stability control results. However, there are a number of discontinuous dynamic components in the excitation and speed governing system, which significantly restrict the effective application of existing online estimation methods. In order to tackle this problem, a space regularization parameter estimation method is proposed for the discontinuous dynamic synchronous generators. This method converts discontinuous dynamic equations of different variable spaces into a unified representation. Then the reduced-space interior point method is applied to the discretized unified dynamic constrained nonlinear programming problem to obtain the estimated parameters and achieve the accurate and efficient handling of discontinuous dynamic equations. Finally, a large amount of numerical experiments and filed tests are demonstrated to verify the effectiveness of the proposed method.