Health assessment method for 500kv high-voltage transmission lines in mountainous environment

A high-voltage transmission line, health assessment technology, applied in the direction of electrical digital data processing, data processing applications, instruments, etc., can solve problems such as power grid outages, achieve significant economic benefits, high calculation efficiency and accuracy, and optimize load combination modes and values modeling effect

Inactive Publication Date: 2017-10-27
CENT CHINA BRANCH OF STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

In recent years, climate anomalies have led to frequent natural disasters and geological disasters, which can easily lead to the risk of large-scale power outages in the power grid

Method used

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  • Health assessment method for 500kv high-voltage transmission lines in mountainous environment
  • Health assessment method for 500kv high-voltage transmission lines in mountainous environment
  • Health assessment method for 500kv high-voltage transmission lines in mountainous environment

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Experimental program
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Embodiment 1

[0034] A method for evaluating the health of 500kV high-voltage transmission lines in a mountainous environment,

[0035] Take 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 mountain environment with hidden geological hazards; the factors affecting the health of the transmission line are the location of the high-voltage transmission tower Hidden geological hazards and wind loads at the location; hidden geological hazards at the location of the high-voltage power transmission tower cause tower base deformation and mountain environment to cause wind field variation;

[0036] 1) Determine the following parameters at the location of the high-voltage transmission tower:

[0037] a) Existing environment of high-voltage transmission tower base: discontinuous surfaces (faults, joints and cracks), groundwater and rock mass strength parameters,

[0038] ...

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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 method for evaluating the health of a 500kV high-voltage transmission line in a mountainous environment, in particular to the operation state judgment, mechanical response and reliability analysis of the high-voltage transmission line with large undulations and complex geological environment under different load combinations And methods of health assessment. Background technique [0002] The development of high-voltage and ultra-high-voltage power transmission has become the main development model for 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 "West-East Power Transmission" and "North-South Power Transmission", and the route corridors often have the characteristics of natural conditions and complex environments. Therefore, the safety of transmission lines under extreme natural disasters and complex occurrence environme...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06Q50/06
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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