基于Matlab的计算机距离保护微分方程算法仿真与研究

Simulating and studying differential equation algorithms of the digital computer distance relaying protection based on Matlab

运用M atlab完成电力系统计算机距离保护的仿真,应用了两种基于线路模型的解微分方程的阻抗算法,分析了其应用于不同参数线路时的适应性,并通过分析在考虑存在干扰和误差时的阻抗计算结果,对两种算法的稳定性进行了研究。还对这两种算法的工程应用提出了有益的建议。

This paper simulates a power system digital computer distance relaying protection with Matlab. Two kinds of transmission line model differential equation algorithms are applied, the applicability to the transmission lines with different parameters is analyzed. Based the results of impedance calculation considering the disturbance and error, the paper studies the stabilities of the line impedance algorithms. And some helpful advices with the algorithms in power system protection are brought forwrd.