附加励磁阻尼控制器(SEDC)是抑制次同步谐振的一种经济且有效的措施。SEDC是励磁系统的附加控制器。文中基于实用励磁系统详细模型,采用RTDS搭建了具有实际工程背景的串联补偿输电系统,对SEDC与励磁系统常规功能,如比例—积分—微分(PID)控制、各种限制、电力系统稳定器(PSS)、调差控制等的相互影响进行了大量的仿真研究。研究结果表明:SEDC对励磁系统除强励限制之外的其余常规功能影响很小,而对强励限制的影响可以通过设置动态限幅等措施避免;除强励限制外,励磁系统其余常规功能对SEDC基本没有影响。 Additional excitation damping controller (SEDC) is to suppress subsynchronous resonance is an economical and effective measures. SEDC is an additional controller for the excitation system. Based on the detailed model of practical excitation system, RTDS is used to build a series compensated transmission system with practical engineering background. The control system of SEDC and excitation system, such as proportional-integral-derivative (PID) control, PSS), transfer control and other interactions conducted a lot of simulation. The results show that SEDC has little influence on the other conventional functions except for the excitation excitation, while the influence on the excitation excitation can be avoided by setting the dynamic limiting and other measures. In addition to the excitation excitation limitation, the rest of the excitation system’s conventional functions SEDC basically no effect.