基于电压幅值对数变换的配电网三相不平衡线性潮流计算

doi:10.11930/j.issn.1004-9649.202101019

中国电力 ›› 2022, Vol. 55 ›› Issue (5): 143-148.DOI: 10.11930/j.issn.1004-9649.202101019

基于电压幅值对数变换的配电网三相不平衡线性潮流计算

李红伟¹, 潘力¹, 韩璐¹, 葛茗瑞²

1. 西南石油大学电气信息学院，四川成都 610500;
2. 西南交通大学电气工程学院，四川成都 610031

收稿日期:2021-01-13 修回日期:2022-04-14 出版日期:2022-05-28 发布日期:2022-05-18
作者简介:李红伟（1977—），男，通信作者，博士，教授，从事配电网分析与优化、多能量优化与控制研究，E-mail：lhwmail@126.com;潘力（1995—），男，硕士研究生，从事主动配电网分析与优化研究，E-mail：paindora@163.com
基金资助:
国家自然科学基金资助项目（51607151）。

Three-Phase Unbalanced Linear Power Flow Calculation Based on Voltage Magnitude Logarithmic Transformation

LI Hongwei¹, PAN Li¹, HAN Lu¹, GE Mingrui²

1. School of Electrical Engineering and Information, Southwest Petroleum University, Chengdu 610500, China;
2. School of Electrical Engineering, Southwest Jiaotong University, Chengdu 610031, China

Received:2021-01-13 Revised:2022-04-14 Online:2022-05-28 Published:2022-05-18
Supported by:
This work is supported by National Natural Science Foundation of China (No.51607151)

摘要/Abstract

摘要： 线性潮流计算方法可为主动配电网分析与运行调控提供更好的鲁棒性与更高的效率。提出一种新的三相不平衡线性潮流计算方法。在极坐标下将三相潮流方程的电压幅值进行对数变换，然后根据三相配电网实际特点进行合理的线性近似。所提方法可以无须迭代直接计算配电网辐射状、弱环状和含PV节点3种情况的三相不平衡潮流。通过IEEE33三相不平衡算例进行了测试和比较，验证了所提方法的有效性。

关键词: 线性潮流, 三相不平衡, 配电网, 电压幅值对数变换

Abstract: The linear power flow calculation method can provide better robustness and higher efficiency for active distribution network analysis and operation regulation. In this paper, a new three-phase unbalanced linear power flow calculation method is proposed. The voltage magnitude of the three-phase power flow equation is transformed into logarithmic form under polar coordinates. And then a reasonable linear approximation is formed according to the actual characteristics of the three-phase distribution network. The proposed method avoids iterating and can directly calculate the three-phase unbalanced power flow of the radial and weak-loop distribution networks as well as the distribution networks containing PV nodes.The proposed method is tested and compared through an IEEE33 three-phase unbalanced example, and its effectiveness has been verified.

Key words: linear power flow, three-phase unbalanced, distribution network, voltage magnitude logarithmic transformation

李红伟, 潘力, 韩璐, 葛茗瑞. 基于电压幅值对数变换的配电网三相不平衡线性潮流计算[J]. 中国电力, 2022, 55(5): 143-148.

LI Hongwei, PAN Li, HAN Lu, GE Mingrui. Three-Phase Unbalanced Linear Power Flow Calculation Based on Voltage Magnitude Logarithmic Transformation[J]. Electric Power, 2022, 55(5): 143-148.

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基于电压幅值对数变换的配电网三相不平衡线性潮流计算

Three-Phase Unbalanced Linear Power Flow Calculation Based on Voltage Magnitude Logarithmic Transformation

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基于电压幅值对数变换的配电网三相不平衡线性潮流计算

Three-Phase Unbalanced Linear Power Flow Calculation Based on Voltage Magnitude Logarithmic Transformation

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