Open AccessOptimization techniques for determining the section and the economic current density of medium and low voltage power lines
Author(s) -
Leon Pană,
Florenţiu Deliu,
Dragoș Păsculescu
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1297/1/012006
Subject(s) - voltage drop , sizing , voltage , overhead (engineering) , electrical engineering , drop (telecommunication) , line (geometry) , power (physics) , electric power , mechanics , materials science , engineering , physics , mathematics , chemistry , thermodynamics , geometry , organic chemistry
In most situations encountered in practice, the choice of section of the overhead or cable lines is made on the basis of the economic criterion in normal operating mode, which is the basic criterion for sizing. The central theme of this paper is the optimization of the section and the economic current density in the medium and low voltage power lines. The first part presents the calculation mathematical model for the determination of the optimal section and the economic current density for the medium and low voltage electric lines, and the section obtained has to be verified based on the criteria of the maximum admitted voltage drop and the mechanical resistance. The case studies presented reflect the results of the corresponding voltage drop in the case of an electric line portion through which a load unit is transmitted, respectively the power corresponding to the optimal cross section and the maximum voltage drop allowed for a medium voltage overhead line.