孙丽玲,尹思杰,王艳娟.电网电压骤升时DFIG定子磁链暂态全过程及其影响因素研究[J].电测与仪表,2022,59(8):86-91. Sun liling,Yin Sijie,Wang Yanjuan.Transient whole process and influencing factors of stator flux in grid voltage swell of DFIG[J].Electrical Measurement & Instrumentation,2022,59(8):86-91.
电网电压骤升时DFIG定子磁链暂态全过程及其影响因素研究
Transient whole process and influencing factors of stator flux in grid voltage swell of DFIG
In the high voltage ride through problem of doubly fed induction generator (DFIG), the study of transient characteristics of stator flux is the basis and basis for realizing high voltage ride through operation, While the conventional studies only for single mode analysis of grid voltage swell, and ignored the fault dynamic change of stator flux recovery after the fault recovery, so that the transient characteristic analysis is not comprehensive. In this paper, the whole process of stator flux transient in different surge modes of grid voltage is studied. On this basis, the factors influencing the transient characteristics of stator flux are compared and analyzed. Grid voltage surge mode is different, the stator flux transient characteristics are also different, and the transient attenuation component of mode II is much smaller than mode I; When the voltage rise of the adjacent grid is the same and the time interval is , the transient attenuation component of the stator flux can be minimized. The simulation results verify the correctness of the theoretical analysis, The research of this paper has certain reference value to master the dynamic process of DFIG and the formulation of high voltage ride through control strategy.
