Method and system for calculating wire length of large-cross-section lead wire

Abstract

The invention discloses a method for calculating wire length of a large-cross-section lead wire. The method comprises the steps of calculating basic wire length of the lead wire under the tension of stringing; calculating a first wire length increment according to primary elongation and creep deformation of the lead wire in a stringing construction process; calculating a second wire length increment according to wire length change of the lead wire caused by self weight of a tension insulator hardware string; calculating a third wire length increment according to the influence of a connection plate on the wire length of the lead wire; calculating a fourth wire length increment according to wire length change of the lead wire caused by tolerance of the tension insulator hardware string; calculating the wire length according to the basic wire length, the first wire length increment, the second wire length increment, the third wire length increment and the fourth wire length increment; and according to the influence of the temperature and the tension on the wire length of the lead wire, converting the calculated wire length into theoretical wire length. The method has the beneficial effects that the influence of multiple factors on the wire length of the lead wire in the construction process is comprehensively considered, so that accurate calculation of the wire length of the lead wire is realized and the calculation errors are reduced.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation engineering construction, and more specifically, to a method and system for calculating the length of a large-section wire. Background technique [0002] At present, the stringing construction of UHV transmission lines is mostly based on the traditional tension stringing construction technology. In a tension section, the wire is set out by applying a constant tension to the wire, and the wire is tightened by the method of sag observation. This traditional The tension stringing method does not require accurate calculation of the wire length of large cross-section wires. With the wide application of UHV engineering and large cross-section conductor technology, traditional tension stringing technology is difficult to solve the stringing construction under various typical terrain conditions. The staged laying construction technology of multi-split conductors and assembly...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a method and system for calculating the wire length of a large cross-section wire to solve the problem of how to accurately calculate the wire length of a large cross-section wire

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