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Method for analyzing galloping characteristic of 10kV overhead insulated line under different wind load and icing conditions

An overhead insulation, line galloping technology, applied in special data processing applications, instruments, data processing applications, etc., can solve problems such as the lack of research on galloping characteristics, avoid land occupation and conditions, and ensure safe operation.

Pending Publication Date: 2021-11-02
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +3
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0011] Traditional galloping research basically only focuses on transmission lines with voltage levels of 110kV and above, and research on galloping characteristics of transmission lines with voltage levels of 35kV and below, especially 10kV voltage levels, is particularly lacking.

Method used

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  • Method for analyzing galloping characteristic of 10kV overhead insulated line under different wind load and icing conditions
  • Method for analyzing galloping characteristic of 10kV overhead insulated line under different wind load and icing conditions
  • Method for analyzing galloping characteristic of 10kV overhead insulated line under different wind load and icing conditions

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Embodiment Construction

[0066] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0067] The analysis method for galloping characteristics of 10kV overhead insulated lines under different wind loads and icing conditions includes the following steps:

[0068] Step 1. Determine the loading and icing conditions of overhead insulated lines. Its load and icing conditions specifically include vertical loads, icing conditions and wind loads of insulated lines.

[0069] The vertical load is the gravity load on the line itself. When the line is covered with ice, the vertical load also includes the gravity on the line covered with ice. The vertical load of the overhead insulated line is directly set by the vertical load in the simulation software Static / Transient Structural, so it does not need to be calculated separately.

[0070] Since the section of the ice-covered overhead line is generally irregular, it is necessary to perform equivalent cal...

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Abstract

The invention relates to a method for analyzing galloping characteristics of a 10kV overhead insulated line under different wind load and icing conditions. The method comprises the following steps: determining different load and icing conditions of a line according to possible meteorological conditions during operation of the 10kV overhead insulated line; building an insulated line 3D model according to a proportion of 1:1; and carrying out reasonable analysis of galloping characteristics of the 10kV overhead insulated line under different wind load and icing conditions. According to the invention, static and dynamic cloud pictures of displacement of the 10kV overhead insulation line under different wind loads and different icing conditions are obtained, static and dynamic change rules of the displacement are obtained, a theoretical basis is laid for analysis of a galloping mechanism of the 10kV overhead insulation line, and the galloping characteristics and mechanism of the 10kV overhead insulation line are explored in principle. Therefore, precaution and early warning of line galloping are facilitated, and safe operation of power transmission lines is ensured.

Description

technical field [0001] The invention belongs to the technical field of power distribution analysis, in particular to a method for analyzing galloping characteristics of 10kV overhead insulated lines under different wind load and ice-covered conditions. Background technique [0002] Line galloping is a vibration phenomenon that occurs when an overhead transmission line is excited by wind when it is covered with ice. Its frequency is low and its duration is long, which will lead to electromechanical faults on the overhead transmission line, such as flashover, insulators and the mechanical In severe cases, even the failure of line breakage and tower collapse may occur. my country is one of the countries with the most severe galloping disasters in transmission lines. According to statistics, there have been more than 1,300 galloping accidents at various voltage levels, resulting in tens of billions of economic losses. Conductor galloping is common in high-voltage transmission l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/28G06Q50/06G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06Q50/06G06F2113/08G06F2119/14Y02E60/00
Inventor 祖国强郑悦姚瑛邓连波杨磊栗薇
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO
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