王绪伟,苏建徽,秦骏达,刘盼盼,施永.基于补偿二乘法的VSG惯性辨识问题及解决方法[J].电测与仪表,2023,60(7):52-57. Wang Xuwei,Su Jianhui,Qin Junda,Liu Panpan,Shi Yong.Problems and solutions of VSG inertial identification based on compensation least squares[J].Electrical Measurement & Instrumentation,2023,60(7):52-57.
基于补偿二乘法的VSG惯性辨识问题及解决方法
Problems and solutions of VSG inertial identification based on compensation least squares
The inertia of the virtual synchronous generator (VSG) is an important parameter of the microgrid inverter. In the process of identifying VSG inertial parameters of existing literature, in order to avoid the data divergence during the recursive process, the output data needs to be filtered preprocessing. However, experiments have found that the cut-off frequency of the output filter will affect the final identification result of the recursive algorithm. Aiming at the above problem, firstly this paper analyzes the mechanism of the filtering method affecting the identification results, and then proposes an identification strategy which performs recursive calculation after equivalent filtering of input and output data. Finally, the correctness of the theoretical analysis and the effectiveness of the proposed strategy are verified by the simulations and experiments.
