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Method for pre-estimating overhead power transmission line wire designed ice thickness

A technology for overhead transmission lines and conductors, which is applied in the field of forecasting and can solve problems such as difficulties in the characteristics of ice-covered loads.

Active Publication Date: 2015-04-29
STATE GRID CORP OF CHINA +2
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Problems solved by technology

For areas where the basic data related to ice coating is scarce and the terrain is very complex, the design ice thickness of the area near the line corridor through spatial interpolation of the ice thickness of meteorological stations has certain uncertainties, which brings great difficulties to accurately grasp the characteristics of ice coating load. difficulty

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  • Method for pre-estimating overhead power transmission line wire designed ice thickness
  • Method for pre-estimating overhead power transmission line wire designed ice thickness
  • Method for pre-estimating overhead power transmission line wire designed ice thickness

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Embodiment Construction

[0055] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0056] Such as figure 1 , the present invention provides a method for estimating the design ice thickness of an overhead transmission line conductor, said method comprising the following steps:

[0057] Collect basic data and establish fine grid meteorological background field data over the years;

[0058] Estimate the ice thickness of the fine mesh wire;

[0059] Correct the icing thickness of fine grid wires;

[0060] Estimation of return period conductor ice thickness.

[0061] The basic data include global reanalysis meteorological data over the years, daily weather data in winter over the years, transmission line operation experience data, digital elevation model data and topographic map base map data.

[0062] The global reanalysis meteorological data over the years include global reanalysis products provided by NCEP (National Center for Environment...

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Abstract

The invention provides a method for pre-estimating an overhead power transmission line wire designed ice thickness. The method includes the step of collecting basic data and establishing fine grid meteorological background field data of past years, the step of estimating a fine grid wire icing thickness, the step of correcting the fine grid wire icing thickness and the step of estimating a wire icing thickness in a return period. The method for pre-estimating the overhead power transmission line wire designed ice thickness provides an effective solution for determining power transmission line wire designed ice thicknesses of regions lack of icing basic data and regions with complex terrain.

Description

technical field [0001] The invention relates to a method for estimating, in particular to a method for estimating the designed ice thickness of conductors of overhead transmission lines. Background technique [0002] Reasonably determining the design ice thickness of overhead transmission line conductors has always been one of the important problems in line design work, which is directly related to the ability of transmission lines to resist ice disasters and the overall investment. Scientific and reasonable grasp of regional ice distribution is the prerequisite for anti-icing design of lines. At present, when determining the design ice thickness of transmission line conductors, the design ice thickness of conductors near meteorological stations or line corridors is generally determined by empirical survey method, ice coating data method, CRREL model method, meteorological parameter regression method, and local topographic meteorological method. For areas where the basic da...

Claims

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Application Information

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IPC IPC(8): H02J3/00H02G7/16
CPCG06Q10/04G06Q50/06
Inventor 程永锋高克利刘彬朱宽军杨加伦李军辉尹泉张立春
Owner STATE GRID CORP OF CHINA
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