Hydrogenerator system with doubly fed generators (DFG) have superior performances such as good stability, ensuring variable speed constant frequency (VSCF), regulating active power and reactive power independently, and absorbing lag reactive power deeply.

• 变速恒频水轮发电系统的出现改变了这一局面,这种发电机具有良好的稳定性及变速恒频发电能力、独立的有功与无功调节能力和较强的进相运行能力。