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

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub 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.

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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.