天津电网动态等值算法

随着我国电力系统向大电网、区域互联方向发展,各个地区的电力公司在进行本地电网暂态稳定性分析时必须考虑互联区域电网的运行状态对本区域的影响,这就导致了计算数据的过于庞大,影响计算速度。为此,需要研究一定的等值方法来对外网进行简化处理。针对天津电网的特点,采用同调等值法研究适合天津电网计算分析的方法,并通过对天津电网500kV电压等级线路的暂态稳定分析,验证了所研究方法的可行性。

Research on dynamic equivalent arithmetic of Tianjin power grid

Due to the interconnections of regional power systems, when the analyses of the transient stability are carried on for local power grids, it must consider other areas' situation and the influence on their local network, which results in the redundancy of the system data and reduces the calculating speed. The method to deal with the external network was studied, and a coherency-based dynamic equivalence method was developed. Dynamic simulation results of transient stability analyses on the 500 kV transmission lines in Tianjin verify the effectiveness of the presented method.