天津电网小干扰稳定分析及控制

小干扰稳定中的一个中心和重要问题就是低频振荡问题，在系统扩大，特别是在大区联网下，这个问题更为突出。利用线性化分析和prony检测相结合的方法完成了大区联网条件下天津电网的低频振荡分析工作。求出了与天津电网相关的低频振荡模式，特别是弱阻尼低频振荡模式，并提出了增强系统阻尼，改进系统小干扰稳定的方法和措施。

Analysis and Control of Small Disturbance Stability for Tianjin Power Grid

Low frequency oscillation is a major problem in small disturbance stability, and it is a more critical one for an enlarged power system, especially in the context of interconnection of regional grids. This paper, by means of combined method of the linearzed analysis and prony detection, analyzes the low frequency oscillation of Tianjin power grid in the context of interconnection of the regional grids, and finds out the low frequency oscillation mode, especially one for the weak damping, which is related to Tianjin grid. Methods and measures are proposed for enhancing the system damping and improving the small disturbance stability of the system.