Aluminum cable steel reinforced for power grid overhead transmission line

Abstract

The invention relates to an aluminum cable steel reinforced for a power grid overhead transmission line, wherein the aluminum cable steel reinforced is low in cost, large in current-carrying capacity, good in anti-corrosion performance, high in strength, non-magnetic and low in loss. According to the technical scheme of the invention, the aluminum cable steel reinforced for the power grid overhead transmission line comprises a tensile core body and a conductor. The conductor is composed of a plurality of electrical aluminum conductor wires. The aluminum cable steel reinforced is characterized in that the tensile core body is composed of a plurality of non-magnetic stainless steel wires and the steel wires are twisted into strands. The Mn content in the non-magnetic stainless steel of the non-magnetic stainless steel wires is 10-15%, and the Ni content thereof is smaller than 5%. The N content in the non-magnetic stainless steel of the non-magnetic stainless steel wires is 0.3-0.4%. the aluminum cable steel reinforced for the power grid overhead transmission line is applied to the power engineering field.

Description

technical field [0001] The invention relates to a steel-cored aluminum stranded wire for an overhead power transmission line of a power network. Applicable to the field of electric power engineering. Background technique [0002] Steel-cored aluminum stranded wire is a common transmission wire suitable for overhead lines, whether it is in the 1920s and 1930s or today in the 21st century, these are very common. Generally, steel-cored aluminum stranded wires are used on utility poles in the field. my country's national standard for steel-cored aluminum stranded wire is GTB-1179-83, and steel-cored aluminum stranded wire is a combination of aluminum conductors and steel wires. Due to the low tensile strength of the aluminum wire, which is only 100-250MPa, and the strength of the galvanized steel wire selected is 1244MPa, the resistivity of the aluminum wire is usually required to be 0.028214Ωmm2 / m. After the combination, it can not only reflect good conductivity, but also It...

AI Technical Summary

Problems solved by technology

There is usually SO in the atmosphere 2 , NO, NO 2 , NH 3 , CO 2 Such acid and alkali substances will cause chemical corrosion to aluminum conductors and galvanized steel wires, especially the corrosion of galvanized steel wires is more serious, usually with a lifespan of only 10 to 15 years, while the design life of line towers is 30 years, and synchronization cannot be achieved during operation. Require

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