Health assessment method for 500 kV high-voltage power transmission line in mountain land occurrence environment

A technology for high-voltage transmission lines and health assessment, applied in data processing applications, instruments, calculations, etc., can solve problems such as power outages, achieve significant economic benefits, high computational efficiency and accuracy, optimize load combination mode and numerical modeling. Effect

Inactive Publication Date: 2015-01-07
CENT CHINA BRANCH OF STATE GRID CORP OF CHINA +2
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Problems solved by technology

In recent years, climate anomalies have led to frequent natural disasters and geological d

Method used

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  • Health assessment method for 500 kV high-voltage power transmission line in mountain land occurrence environment
  • Health assessment method for 500 kV high-voltage power transmission line in mountain land occurrence environment
  • Health assessment method for 500 kV high-voltage power transmission line in mountain land occurrence environment

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Embodiment 1

[0036] Taking the high-voltage transmission line in the mountainous environment as the evaluation object; the high-voltage transmission line includes several high-voltage transmission towers built in the mountainous environment with geological hidden dangers; the factor that affects the health status of the transmission line is the location of the high-voltage transmission tower. Geological hazards and wind loads at the location; the geological hazards at the location of the high-voltage transmission tower cause deformation of the tower foundation and wind field variation caused by the mountainous environment;

[0037] 1) Determine the following parameters of the location of the high-voltage transmission tower:

[0038] a) Occurrence environment of high-voltage transmission tower foundation: discontinuous surfaces (faults, joints and fissures), groundwater and rock mass strength parameters,

[0039] b) Mechanical parameters of the bedrock below the high-voltage transmission to...

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Abstract

The invention relates to a health assessment method for a 500 kV high-voltage power transmission line in the mountain land occurrence environment. According to the health assessment method, with a 500 kV high-voltage power transmission tower where geology hidden dangers exist as the research core, internal factors for generating the geology hidden dangers of the power transmission line are described as external factors of tower footing bearing capacity and tower footing rock mass quality assessment, and based on a multi-factor combination control theory, relations between all the influence factors and the health state of a tower footing are described; the change of mountain land geomorphic features is expressed as the important factor for influencing a wind-induced vibration response, and wind speed, the wind-induced vibration response and the wind-induced vibration coefficient are needed by quantitative description in the process of health assessment on the power transmission line; a fine three-dimensional infinite element model is used for simulating a high-voltage power transmission tower system existing in the mountain land occurrence environment, and a high-voltage power transmission line health assessment analysis platform of multi-factor cooperative control is constructed with the tower footing geology hidden dangers and wind loads as main control factors, so that the quantitative index of the health state of the power transmission line is determined.

Description

technical field [0001] The invention relates to a health assessment method for 500kV high-voltage transmission lines in a mountainous environment, especially for operating state judgment, mechanical response and reliability analysis of high-voltage transmission lines with large terrain fluctuations and complex geological environments under different load combinations and health status assessment methods. Background technique [0002] The development of high-voltage and ultra-high-voltage transmission has become the main development mode of power supply in various countries. In order to meet the energy demand of economic development, my country has put forward the power development strategy of "transmitting power from west to east" and "transmitting power from north to south". However, the places where the line corridors pass often have the characteristics of complex natural conditions and existing environments. Therefore, the safety of transmission lines under extreme natur...

Claims

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Application Information

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IPC IPC(8): G06Q50/06
CPCG06Q50/06
Inventor 熊卫红涂长庚李振柱刘先珊许明肖正直张林
Owner CENT CHINA BRANCH OF STATE GRID CORP OF CHINA
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