The damping characteristics of the ASTG and the STG with PSS in the system was analyzed and compared.The reason why the damping characteristics of the STG with PSS was improved is opened out.

• 利用所建模型，对加装PSS后同步汽轮发电机的阻尼特性与采用双通道励磁控制策略的异步化汽轮发电机进行了分析和比较。