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A three-phase linear load flow solution based on loop-analysis theory for distribution system

机译:一种三相线性荷载流量基于环路分析理论的分配系统

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摘要

Purpose To realize the operation optimizing of today's distribution power system (DPS), like economic dispatch, contingency analysis, and reliability and security assessment etc., it is beneficial and indispensable that a faster linear load flow method is adopted with a reasonable accuracy. Considering the high R/X branch ratios and unbalanced features of DPS, the purpose of this paper is to propose a faster and non-iterative linear load flow solution for DPS.Design/methodology/approach Based on complex function theory, the derivations of the injection current linear approximation have been proposed for the balanced and the single-, double- and three-phase unbalanced loads of DPS on complex plane. Then, a simple and direct linear load flow has been developed with loop-analysis theory and node-branch incidence matrix.Findings The methodology is appropriate for balanced and single-, double- and three-phase hybrid distribution system with different load models. It provides a fast and robust load flow method with a satisfactory accuracy to handle the problems of DPS whenever the load flow solutions are required.Research limitations/implications The distributed generators (DGs) with unity or fixed power factors can be easily included. But the power and voltage nodes cannot be dealt with directly and need to be further studied.Originality/value By combining the current linear approximation with the loop theory-based method, a new linear load flow method for DPS has been proposed. The method is valid and acute enough for balanced and unbalanced systems and has no convergent problems.
机译:目的是实现今天的经济调度,应急分析和可靠性和安全评估等的运行优化,如经济派遣,应急分析和可靠性等,它是有益的,并且采用合理准确性的更快的线性荷载流程。考虑到DPS的高R / X分支比率和不平衡特征,本文的目的是提出用于基于复杂功能理论的DPS.Design/Methodology/aprocation的更快和非迭代的线性荷载流程。已经提出了用于在复杂平面上的平衡和单个,双相,三相不平衡负载的注射电流线性近似。然后,具有循环分析理论和节点分支入射矩阵的简单和直接的线性负载流。采用方法适用于具有不同负载模型的平衡和单相和三相混合分布系统。它提供了一种快速且稳健的负载流量方法,具有令人满意的精度,可以在需要负载流量解决方案时处理DPS的问题。搜索限制/影响分布式发电机(DGS)可以容易地包括单位或固定电源因子。但是,不能直接处理电源和电压节点,并且需要进一步研究。通过将电流线性近似与基于环理论的方法相结合,已经提出了一种用于DPS的新的线性载荷流程方法。该方法对平衡和不平衡的系统有效和急性,并且没有收敛问题。

著录项

  • 来源
    《Compel》 |2019年第2期|703-723|共21页
  • 作者

    Li Hong Wei; Zhu Hairong; Pan Li;

  • 作者单位

    Southwest Petr Univ Sch Elect Engn & Informat Chengdu Sichuan Peoples R China;

    Southwest Petr Univ Sch Elect Engn & Informat Chengdu Sichuan Peoples R China;

    Southwest Petr Univ Sch Elect Engn & Informat Chengdu Sichuan Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Distribution systems; Power systems simulation;

    机译:配电系统;电力系统仿真;

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