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静止同步补偿器(STATCOM)具有强大的无功支撑和电压控制能力,利用其附加阻尼控制可以在稳定接入点电压的同时可抑制其接入引起的振荡以及系统中出现的次同步谐振(SSR)。通过对系统时域仿真数据的Prony辨识,得到STATCOM定电压控制系统参考电压到发电机转速偏差的等效传递函数;辨识出系统的振荡模态及其特征信息。在此基础上,采用状态反馈的极点配置技术设计了STATCOM附加次同步阻尼控制器(SSDC)。在IEEE次同步谐振第一标准测试系统上,利用PSCAD/EMTDC进行仿真实验,验证了Prony辨识方法用于STATCOM阻尼控制器设计的可行性和所设计的阻尼控制器的有效性。
Static Synchronous Compensator (STATCOM) has powerful reactive power support and voltage control capability. With its additional damping control, it can stabilize the access point voltage and suppress its access-induced oscillation and subsynchronous resonance (SSR ). Through the Prony identification of the system time-domain simulation data, the equivalent transfer function of stator voltage control system reference voltage to the generator speed deviation is obtained. The oscillation mode and its characteristic information of the system are identified. On this basis, STATCOM additional subsynchronous damping controller (SSDC) is designed by using state feedback pole placement technique. In the IEEE subsynchronous resonance first standard test system, the simulation experiment was carried out by using PSCAD / EMTDC to verify the feasibility of the Prony identification method for the STATCOM damping controller design and the effectiveness of the damping controller.