Parameter estimation of three-phase distribution feeder/ UG cable using branch current magnitude and power flow measurements

IF 4.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2025-07-01 Epub Date: 2025-03-04 DOI:10.1016/j.epsr.2025.111549

Mohd Tauhid Alam, Biswarup Das

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引用次数: 0

Abstract

The precision of line parameters (resistance, reactance) and shunt parameters (susceptance) significantly affect the operation and planning of the power distribution system. However, environmental factors such as temperature, conductor aging as well as human errors can cause the actual line parameters to deviate from those recorded in the manufacturer’s database. To address the challenge, this article present a line parameter estimation method for the three-phase unbalanced distribution system using branch current magnitude and power flow measurements. The present study can accurately estimate the series parameters (r, x) and shunt parameter (

b_{s h}

) of the three-phase overhead distribution feeder as well as the underground cable feeder. Additionally, this paper also describes an approach for identifying errors in the line parameters of a three-phase distribution system using the normalized Lagrange multiplier test (NLM). The performance index is developed by utilizing the maximum absolute percentage error (MAPE) values to evaluate the accuracy of the estimated line parameters. The efficiency of the proposed feeder parameter estimation method are validated on the modified IEEE 37 and 123 bus distribution systems. The results show that the proposed line parameter estimation method works effectively, even when dealing with erroneous measurements.

查看原文本刊更多论文

用支路电流大小和潮流测量方法估算三相配电馈线/ UG电缆参数

线路参数（电阻、电抗）和并联参数（电纳）的精度对配电系统的运行和规划有着重要的影响。然而，环境因素，如温度、导体老化以及人为错误可能导致实际线路参数偏离制造商数据库中记录的参数。为了解决这一问题，本文提出了一种利用支路电流大小和潮流测量来估计三相不平衡配电系统线路参数的方法。本研究可以准确地估计三相架空配电馈线和地下电缆馈线的串联参数（r, x）和分流参数（bsh）。此外，本文还介绍了一种利用归一化拉格朗日乘子检验（NLM）识别三相配电系统线路参数误差的方法。性能指标是利用最大绝对百分比误差（MAPE）值来评价估计的线路参数的准确性。在改进的ieee37和ieee123总线配电系统上验证了所提馈线参数估计方法的有效性。结果表明，即使在处理误差测量时，所提出的线参数估计方法也是有效的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.