Split conductor surface field intensity distribution calculation method and system

Abstract

The invention discloses a split conductor surface field intensity distribution calculation method and system. The method comprises the steps of enabling a split conductor of a power transmission lineto be equivalent to a single equivalent conductor; segmenting the equivalent wire according to an arc sag catenary equation to obtain a plurality of line charge unit small segments; calculating each line charge unit small section by adopting an analog charge method so as to obtain the surface field intensity of the equivalent wire; and calculating the surface field intensity distribution of the split conductor according to the equivalent relationship between the surface field intensity of the equivalent conductor and the maximum field intensity of the surface of the split conductor. Accordingto the invention, the sag influence is considered during segmentation; a three-dimensional model of the power transmission line is established; and the surface field intensity of the equivalent conductor is calculated through a charge simulation method, the three-dimensional distribution situation of the surface field intensity of the split conductor of the power transmission line considering thesag influence is calculated, the longitudinal distribution of the surface field intensity of the conductor along the conductor can be effectively analyzed, and finally the calculation accuracy of thesurface field intensity of the conductor is improved.

Description

technical field [0001] The invention relates to the technical field of electromagnetic detection, in particular to a method and system for calculating the surface field strength distribution of split conductors. Background technique [0002] When the transmission line is working normally, a strong electric field intensity is often generated near the wire. When the electric field strength on the surface of the wire exceeds the corresponding inception field strength of the wire, audible noise and radio interference will be generated. [0003] With the continuous improvement of the voltage level of AC transmission lines, the deterioration of the electromagnetic environment around EHV / UHV transmission lines has aroused strong public repercussions. The electromagnetic environment of the transmission line is closely related to the surface field strength of the split conductor, and the calculation accuracy of the surface field strength of the conductor directly affects the electro...

AI Technical Summary

Problems solved by technology

[0004] At present, the calculation of conductor surface field strength for AC transmission lines is studied by establishing a two-dimensional model, which does not consider the influence of conductor sag, and does not involve the analysis of the longitudinal distribution of conductor surface field strength along the conductor direction, which affects the conductor surface. Calculation accuracy of field strength

Images