| 分块稀疏矩阵因子表的修正 |
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| 引用本文： | 严正,陈雪青,相年德.分块稀疏矩阵因子表的修正[J].清华大学学报(自然科学版),1989(4). |
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| 作者姓名： | 严正 陈雪青 相年德 |
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| 作者单位： | 电机工程系
(严正，陈雪青)，电机工程系(相年德) |
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| 摘 要： | 结合稀疏矢量法中因子分解道路的概念，研究了对６×ｂ分块稀疏矩阵的因子表进行 直接修正及部分再分解的算法，在电力系统计算中两种算法能显著提高计算速度。在各 类与稀疏矩阵有关的工程问题中，本文导出的算法同样具有非常广泛的应用前景。
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| 关 键 词： | 稀疏矩阵 稀疏矢量 电力系统计算 |
Factors Modification of Blocked Sparse Matrices |
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| Yan Zheng, Chen Xueqing, Xiang Niande.Factors Modification of Blocked Sparse Matrices[J].Journal of Tsinghua University(Science and Technology),1989(4). |
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| Authors: | Yan Zheng Chen Xueqing Xiang Niande |
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| Institution: | Yan Zheng; Chen Xueqing; Xiang Niande Department of Electrical Engineering |
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| Abstract: | It is unnecessary to refactorize a modified sparse Inatrix if its modified non-zero elements are relatively few. This paper presents two factors modification methods-direct modification method and partial refactorization method-both are mainly based on the concept of fact ornation path. The two methods can be used to update the affected factors of a modified b x b blocked sparse matrix and have been proven to be highly efficiont in solving reactive power optimization problems of power systems. |
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| Keywords: | sparse matrix sparse vector power systems computation |
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