一种改进构网型虚拟同步发电机同步稳定性的系统化小信号分析方法

The integration of converter-interfaced generators(CIGs)into power systems is rapidly replacing traditional syn-chronous machines.To ensure the security of power supply,modern power systems require the application of grid-forming technologies.This study presents a systematic small-signal anal-ysis procedure to assess the synchronization stability of grid-forming virtual synchronous generators(VSGs)considering the power system characteristics.Specifically,this procedure offers guidance in tuning controller gains to enhance stability.It is ap-plied to six different grid-forming VSGs and experimentally tested to validate the theoretical analysis.This study concludes with key findings and a discussion on the suitability of the ana-lyzed grid-forming VSGs based on the power system character-istics.