不平衡配电系统的快速短路分析方法

J. Teng
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引用次数: 6

摘要

提出了一种不平衡配电系统的快速短路分析方法。采用基于配电系统拓扑结构的两个矩阵分析了故障条件下母线电压、母线注入电流和支路电流的变化。基于这两个矩阵,可以建立具有精确三相模型的短路分析方法,并可用于解决各种类型的单一或同时不对称故障。由于该方法不使用传统的导纳矩阵,因此不需要耗时的矩阵三因子分解和/或矩阵逆过程;因此,该方法具有速度快、鲁棒收敛和精度高等优点。测试结果表明,该方法具有集成到现有配电自动化系统中的巨大潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Fast short circuit analysis method for unbalanced distribution systems
A fast short circuit analysis method for unbalanced distribution systems is proposed in the paper. Two matrices developed based on the topological structures of distribution systems are used to analyze the variations of bus voltages, bus current injections and branch currents under fault conditions. The proposed short circuit analysis method with exact three-phase models can then be developed from these two matrices and be exploited to solve the various types of single or simultaneous unsymmetrical faults. Since the proposed method does not use the traditional admittance matrix, the time-consuming procedures including matrix tri-factorization and/or matrix inverse are not necessary; therefore, the proposed method can achieve the advantages of high speed, robust convergence and accuracy. Test results show that the proposed method has great potential to be integrated into the existent distribution automation.
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