A Numerical Calculation Method for the Cutting Length of Soft Conductors in Substation Based on Catenary

Abstract

The invention relates to a transformer substation flexible circuit conductor blanking length numerical solution method based on catenary. A transformer substation flexible circuit conductor is divided into a strain insulator string and a flexible bus, structural parameters and material parameters are determined, the hitch point of the strain insulator string serves as an origin, a X-Y coordinate system is established, and an analysis model of transformer substation flexible circuit conductor blanking length is established; secondly, a sag step length dichotomy adjustment module is constructed; thirdly, a horizontal stress calculation adjustment module is established; fourthly, a hardware space coordinate calculation module is established; fifthly, a total sag calculation error adjustment module is established; finally, the calculation of modules is combined, and the blanking length of the flexible circuit conductor can be obtained. On the basis of the known structural parameters and material parameters, stress is obtained by using sag, designed sag serves as a limiting condition, by means of a numerical method, accurate sag, horizontal stress and the like are obtained, the accurate flexible circuit conductor blanking length is obtained, and the transformer substation flexible circuit conductor blanking length numerical solution method has very high application value.

Description

technical field [0001] The invention relates to a method for calculating the blanking length of flexible conductors in substations, in particular to a numerical solution method for the blanking length of flexible conductors in substations based on a catenary. Background technique [0002] In the catenary-based analytical model of the cutting length of soft conductors in substations, in addition to the known structural parameters and material parameters, there are still unknown quantities and multiple intermediate variables, and the expressions of the intermediate variables are complex and coupled with each other, which is difficult to obtain. Their analytical solution expressions cannot be directly applied to actual projects, and some restrictions and simplifications are required. [0003] Generally, in engineering practice, during the calculation process of non-uniform load flexible conductors, substation construction personnel often determine the stress values ​​of all fle...

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Problems solved by technology

[0006] The object of the present invention is to provide a kind of numerical calculation method based on catenary catenary that can obtain accurate blanking length by numerical method, solves the existing theoretical analytical model of blanking length of flexible conductor, the expression The structure is complex and coupled with each other, and it is difficult to obtain their analytical solution expressions. At the same time, the horizontal stress of the soft conductor in the construction site is unknown, which greatly limits the practical application value of the theoretical analytical model of cutting length

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