Refinement of Wind Loads on Lattice Support Structures of the Intersystem Overhead Power Transmission Lines 750kV

• Published in: Procedia engineering Vol. 117; pp. 1028 - 1035
• Main Authors: Shevchenko, Yevgeny, Nazim, Yaroslav, Tanasoglo, Anton, Garanzha, Igor
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 2015
• Subjects: characteristic value of load; climatic zoning maps; lattice support; longitudinal force; overhead power transmission line; wind load; climatic zoning maps; overhead power transmission line; lattice support; longitudinal force; characteristic value of load; wind load
• ISSN: 1877-7058; 1877-7058
• DOI: 10.1016/j.proeng.2015.08.225

In this paper attention is paid to the intersystem overhead power transmission line (OPTL) 750 kV, which is being operated on the territory of Ukraine. Subjects of research are the intermediate supports of PS750-3i type with 5 m and 10 m stand or without it. Special attention is paid to the formation of climatic zone maps along the route of the OPTL under consideration. It's given a description of the wind load gathering algorithm, which consists of separate units each of which produces the calculation of loading on a predetermined structural element of lattice support. Calculated wind load is defined here as the sum of the static and dynamic of the components. Here are also represented the calculation data of a rod of equivalent stiffness by an engineering practice. Here are provided the numerical values of loadings from current carrying wires and lightning-protective ropes in normal and emergency operation modes of work for the most weighted OPTL supports of the given ground surface profile. On the base of design and extension of the obtained results it was compared the maximum longitudinal forces in support belts from the action of wind loading with the values represented at calculated worksheet (project institute “Ukrenergosetproekt”, Kharkiv).