变结构与变参数大型电力系统非对称断相故障电气量值的快速计算

本文提出了一种快速计算变结构与变参数电力系统非对称断相故障电气量值的新方法，勿需修改节点阻抗或导纳矩阵，采用一次性处理网络变化及断相口边界条件，可算出各序网断相口的等值参数及节点电压与支路电流。本文还导出了两种非对称断相同序口电流的比值系数，利用它们可根据已算出的任一种非对称断相状态下的电气量值快速算出另一种。

HIGH SPEED CALCULATIONS OPEN CONDUCTOR FAULTS IN LARGE POWER SYSTEMS WITH VARIABLE STRUCTURES AND PARAMETERS

A new method to calculate the unsymmetrical open conductor faults in power systems with variable configuration and parameters is presented.All the electric values and open port equivalent parameters for all sequence networks are calculated in one step procedure to treat network changes and fault conditions without modifying the original Z-bus or Y-bus matrices.The propertionality of the same sequence port currents for the two unsymmetric open conductor faults have been also deduced.By using them the electric val- ues for one of the two open conductor faults can be found from the other one calculated.