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Split conductor surface field intensity distribution calculation method and system

A technology for splitting wires and surface field strength, applied in CAD circuit design, detecting faults by conductor type, fault location, etc., can solve the influence of wire sag without considering the influence of wire sag, affecting the calculation accuracy of wire surface field strength, and not involving wires Problems such as the analysis of the longitudinal distribution of the surface field strength to achieve the effect of improving the calculation accuracy

Active Publication Date: 2020-01-31
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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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

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  • Split conductor surface field intensity distribution calculation method and system
  • Split conductor surface field intensity distribution calculation method and system
  • Split conductor surface field intensity distribution calculation method and system

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Embodiment Construction

[0093] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0094] see figure 1 , a method for calculating the surface field strength distribution of a split conductor provided in the first embodiment of the present invention, including steps S101 to S104:

[0095] S101, equating the split wires of the transmission line into a single equivalent wire.

[0096] Wherein, the purpose of equating the spl...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/30G01R31/08
CPCG01R31/085Y02E60/00
Inventor 王华云李琼王文彬蒙天骐郭亮邓才波蔡木良邓志祥
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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