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Method for weakening local field intensity of ultra-high-voltage transmission line

A transmission line and local field technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problems of weakening field strength requirements, shielding line erection locations cannot be erected, and cannot be satisfied, so as to improve the weakening ability, Easy operation and good reliability

Inactive Publication Date: 2019-12-20
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still some problems in the method of only erecting one shielded wire
In many cases, a shielded wire cannot meet the requirement of weakening the field strength, or the shielded wire erection site calculated by simulation cannot be erected

Method used

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  • Method for weakening local field intensity of ultra-high-voltage transmission line
  • Method for weakening local field intensity of ultra-high-voltage transmission line
  • Method for weakening local field intensity of ultra-high-voltage transmission line

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Experimental program
Comparison scheme
Effect test

Embodiment

[0037] In order to verify the effectiveness of the solution of the present invention, the following simulation experiments are carried out.

[0038] The flowchart of the method for weakening the local field strength of UHV transmission lines in the present invention is as follows figure 1 shown.

[0039] Step 1 uses the electromagnetic field analysis software Ansoft Maxwell to establish a transmission line simulation model, and the specific steps are:

[0040] Step 1.1: Start Ansoft Maxwell to create a 2D modeling environment;

[0041] Step 1.2: Generate single-circuit transmission lines according to parameters such as wire radius, coordinates, phase sequence, and materials. The specific positions of three-phase transmission lines are: A phase (0,35m), B phase (-15.5m, 24m), C phase Phases (15.5m, 24m), the line radius is 10mm, and the line material is aluminum; set the ABC three-phase to be 1000kv ultra-high voltage excitation;

[0042] Step 1.3: Generate a land model and ...

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Abstract

The invention discloses a method for weakening the local field intensity of an ultra-high voltage transmission line. The method comprises the steps: building a transmission line simulation model according to the actual sizes of an ultra-high voltage transmission line tower and a wire, and determining the electric field intensity distribution of a target region; adding two shielded wire models on the basis of the power transmission line simulation model; horizontally moving the shielding wire, and determining the horizontal position of the shielding wire for maximally weakening the electric field intensity of the target area; and then fixing the horizontal position, vertically moving the shielding wire, and determining the vertical position of the shielding wire for maximally weakening theelectric field intensity of the target area. The method determines optimal positions of the two shielded wires through simulation, improves the weakening capacity of the field intensity of the targetarea, is easy and convenient in operation, and is good in reliability.

Description

technical field [0001] The invention belongs to the ultra-high voltage transmission and transformation control technology, in particular to a method for weakening the local field strength of an ultra-high voltage transmission line. Background technique [0002] UHV transmission is developed on the basis of EHV transmission, and its purpose is to continue to improve transmission capacity, realize high-power medium and long-distance transmission, and realize long-distance power system interconnection to build a combined power system. At present, my country is densely populated, land is precious, and energy is distributed unevenly. The construction of a strengthened power grid with a 1000kV UHV power grid as the core has become a strategic goal of national power construction. [0003] The 1000kV transmission line has the characteristics of long distance. In special areas with low towers or close to residential houses, local electric field strength may exceed the standard. Fact...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 姚灼燊闻枫李睿张航杨涛
Owner NANJING UNIV OF SCI & TECH
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