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Sparse Computation of Power System Fault Impedance Matrices

机译:电力系统故障阻抗矩阵的稀疏计算

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This paper presents a contribution that enhances the efficiency of sparsity techniques for solving some problems in large-scale power systems. Alterations are introduced on storage schemes and node ordering to lead to a reduction of the computation time and space memory. The fast sparse vector approach (FSV) is presented and implemented in a short circuit program to compute fault currents and fault bus voltages. It is based on a formulation that computes only the required column of the Z impedance matrix (or some elements of the column) for any particular type of fault. The tests carried out on several power systems ranging from the IEEE 30 bus to a 1084 bus test system show that the proposed approach gives an important reduction of computation time.
机译:本文提出了有助于提高稀疏技术解决大型电力系统中某些问题的效率的贡献。引入了对存储方案和节点排序的更改,以减少计算时间和空间内存。提出并在短路程序中实现了快速稀疏矢量方法(FSV),以计算故障电流和故障总线电压。它基于仅针对任何特定类型的故障计算Z阻抗矩阵所需的列(或该列的某些元素)的公式。在从IEEE 30总线到1084总线测试系统的多种电源系统上进行的测试表明,所提出的方法大大减少了计算时间。

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