Detecting the Capacity Reserve in an Overhead Line
There are various solutions for improving existing overhead line systems with the general purpose of increasing their limited capacity. The capacity reserve of the existing overhead lines is an important problem that must be considered from different aspects. The paper contains a comparative analysis of the mechanical and thermal limitations of an existing overhead line based on certain calculation conditions characterizing the examined variants. The methodology of the proposed estimation of the permissible conductor temperature and maximum load current is described in detail. The transmission line model consists of specific information of an existing overhead line of the Latvian power network. The main purpose of the simulation tasks is to find an additional capacity reserve by using accurate mathematical models. The results of the obtained data are presented.
Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1079364Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1832
 Dale A. Douglass, Practical application of High-Temperature Low-Sag (HTLS) Transmission Conductors. New Haven, Connecticut: 2004, p. 53.
 Ozge Ozdemir, Karina C. Veum, Jeroen de Joode, Gianluigi Migliavacca, Andrea Grassi, Alessandro Zani, "The impact of Large-scale Renewable Integration on Europe's Energy corridors", in Proc. of IEEE PowerTech Confrence, Trondheim, 2011, pp. 1-8.
 K. Kopsidas, S. M. Rowland, M. N. R. Baharom, and I. Cotton, "Power transfer capacity improvements of existing overhead line systems," in Proc. of Electrical Insulation (ISEI), Conference Record of the 2010 IEEE International Symposium on, San Diego, 2010, pp. 1-5.
 Svetlana Berjozkina, Vladimirs Bargels, Antans Sauhats, Edvins Vanzovichz, "A Comparative assessment of Conductors with Composite Core", in Proc. of 52nd Annual International conference of RTU, Riga, 2011, pp. 1-6.
 S. Berjozkina, A Sauhats, E. Vanzovichs, "Modeling of the Load Current of the Transmission Line", in Proc. of 10th International Conference on Environment and Electrical Engineering Conference, Roma, 2011, pp. 911-914.
 Santiago Cascante Nogales, José Antonio Lama Miñana, Adrián Alonso, M. PAz Comech, Miguel García-Gracia, Eduardo Martin, "HTLS and HVDC solutions for overhead lines uprating," in Proc.of the 11th Spanish Portuguese Conference on Electrical Engineering, 2009, pp.1-5.
 Dan Lawry, & Bernie Fitzgerald, "Finding Hidden Capacity in Transmission Lines", North American Windpower, April 2007 issue, pp. 1-4.
 E. Rosolowski, J. Izykowski, P. Pierz, M. M. Saha, P. Balcerek, M. Fulczyk, "Optimization of distance protection algorithm for series-compensated transmission line", in Proc. of IEEE PowerTech Confrence, Trondheim, 2011, pp. 1-7.
 Mathematical Model for evaluation of Conductor Temperature in the Steady (or Quasi-Steady) State (Normal Operation), CIGRE, ELECTRA No. 144, Oct. 1992, pp. 109-115.
 IEEE standard for Calculation the Current-Temperature Relationship of Bare Overhead Conductors, IEEE Std. 738-2006 (revision of IEEE Std 738-1993).
 L. Staszewiski, W. Rebizant, "The Differences between IEEE and CIGRE Heat Balance Concepts for Line Ampacity Considerations", in Proc. of the International Symposium of Modern Electric Power Systems (MEPS), Wroclaw, 2010, pp. 1-4.
 TAIHAN, Electric Wire Co. Ltd, "Overhead electrical aluminum conductors", catalogue, online available at: www.taihan.com/customer/pdf_down.asp?file=0902.pdf.
 LS VINA Cable, "Bare conductor for overhead lines", catalogue, online available: http://www.lsvinacable.com.vn/Desktop.aspx/Bare- Conductors/Bare-Conductors-for-Overhead lines/Bare_Conductor_for_Overhead_Lines/.
 Electrical Code. Moscow: Gosenergonadzor, 2000, pp.213-281
[in Russian language].
 LIJIA REN, XIUCHEN JIANG, GEHAO SHENG, WU BO, "Design and calculation method for Dynamic Increasing Transmission Line Capacity", WSEAS Transactions on Circuits and Systems, vol. 7, issue 5, May 2008, pp. 348-357.
 The method of calculation of limit loads for current conditions of the heating wires to the existing power lines. MT 34-70-037-87. Moscow: Soyuztehenergo, 1987, pp. 3-35 (in Russian).
 Svetlana Beryozkina, Antans ASauhats, Edvins Vanzovichs, "Climate Conditions Impact on the Permissible Load Current of the Transmission Line", in Proc. of IEEE PowerTech Confrence, Trondheim, 2011, pp. 1-6.
 I. Albizu, E. Fernandez, A. J. Mazon, J. Bengoechea, and E. Torres, "Hardware and software architecture for overhead line rating", in Proc. of IEEE PowerTech Confrence, Trondheim, 2011, pp. 1-6.