Further Results on Newton-Raphson Method in Feasible Power-Flow for DC Distribution Networks

Further Results on Newton-Raphson Method in Feasible Power-Flow for DC Distribution Networks
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直流配电网可行潮流中牛顿-拉夫逊法的进一步结果

DOI:
10.1109/tpwrd.2021.3080132
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发表时间:
2022-04
影响因子:
4.4
通讯作者:
Peng Wang
Peng Wang
中科院分区:
工程技术2区
文献类型:
--
作者:
Zhangjie Liu;Ruisong Liu;Xin Zhang;Mei Su;Yao Sun;Hua Han;Peng Wang

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本文分析了具有恒功率负载的直流配电网潮流方程的牛顿-拉夫森方法的收敛性。具体地说,本文的目的是:1)确定潮流方程可解的充要条件;2)推导出牛顿-拉夫森(NR)法的收敛条件。对于第一个问题,给出了潮流方程可解的充要条件。在此基础上,对NR方法的收敛进行了分析,得到了迭代初值的收敛条件。此外,只要潮流方程是可解的,证明了在所提出的收敛条件下NR方法是收敛的。最后,通过案例分析验证了本文理论分析的正确性。
This letter analyzes the convergence of the Newton-Raphson method for the power-flow equation of a DC distribution network with constant power loads (CPLs). Specifically, this letter aims to: 1) determine the sufficient and necessary solvability condition of the power-flow equation; 2) derive the convergence condition of the Newton-Raphson (NR) method. For the first issue, the necessary and sufficient solvability condition for the power-flow equation is derived. On this basis, the convergence of the NR method is analyzed, and the convergence condition about the initial iterative value is obtained. Moreover, it is proved that the NR method under the proposed convergence condition is convergent as long as the power-flow equation is solvable. Finally, case studies verify the correctness of the presented theoretical analysis.
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发表时间: 2020-09
影响因子: 6.6
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