<abstract xmlns="http://www.w3.org/1999/xhtml"><p> Approach is proposed to the choice of overhead line cross-sections that would be optimal under market conditions. For this purpose, in the design practice and at network reconstruction two methods exist: of the economic current density, and of the economic intervals. As of now, none of them works properly, since the cost of electrical materials, of building and construction as well as the total investments in a line are determined by the market prices. Therefore, a modified economic intervals’ method has been developed that can work under market conditions. The method allows also considering the discrete character of standard cross-sections for the lines and concrete technical and technically-economic parameters. For practical application of the proposed method, universal economic nomograms for 20-110-330 kV overhead lines have been calculated and constructed. In the paper, a user interface is proposed for realization of the modified method in Matlab environment.</p></abstract>

Approach is proposed to the choice of overhead line cross-sections that would be optimal under market conditions. For this purpose, in the design practice and at network reconstruction two methods exist: of the economic current density, and of the economic intervals. As of now, none of them works properly, since the cost of electrical materials, of building and construction as well as the total investments in a line are determined by the market prices. Therefore, a modified economic intervals’ method has been developed that can work under market conditions. The method allows also considering the discrete character of standard cross-sections for the lines and concrete technical and technically-economic parameters. For practical application of the proposed method, universal economic nomograms for 20-110-330 kV overhead lines have been calculated and constructed. In the paper, a user interface is proposed for realization of the modified method in Matlab environment.

Choice of the Optimum Cross-Sections for 20–110–330 kV Overhead Lines Under Market Conditions / 20–110–330 Kv Gaisvadu Līniju Optimālo Šķērsgriezumu Izvēle Tirgus Apstākļos

Riga Technical University, Power Engineering Institute, 1 Kronvalda Blvd., Riga, LV-1010, LATVIA

Latvian Journal of Physics and Technical Sciences

Approach is proposed to the choice of overhead line cross-sections that would be optimal under market conditions. For this purpose, in the design practice and...

Choice of the Optimum Cross-Sections for 20–110–330 kV Overhead Lines Under Market Conditions / 20–110–330 Kv Gaisvadu Līniju Optimālo Šķērsgriezumu Izvēle Tirgus Apstākļos

Published Online: Feb 01, 2013

Page range: 13 - 22

DOI: https://doi.org/10.2478/v10047-012-0031-3

Keywords
overhead lines, optimum cross-section, annual costs, nomograms, user interface

This content is open access.

Choice of the Optimum Cross-Sections for 20–110–330 kV Overhead Lines Under Market Conditions / 20–110–330 Kv Gaisvadu Līniju Optimālo Šķērsgriezumu Izvēle Tirgus Apstākļos

Published Online: Feb 01, 2013

Page range: 13 - 22

DOI: https://doi.org/10.2478/v10047-012-0031-3

Keywordsoverhead lines, optimum cross-section, annual costs, nomograms, user interface

This content is open access.

Keywords
overhead lines, optimum cross-section, annual costs, nomograms, user interface