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Risk monitoring method and system for transmission tower in typhoon

A technology for power transmission towers and risk monitoring, applied in electrical digital data processing, instruments, design optimization/simulation, etc., can solve problems such as large wind speed prediction errors in middle towers

Active Publication Date: 2021-04-20
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0005] The purpose of the present invention is to provide a method and system for monitoring the risk of transmission towers during typhoons, so as to solve the problem of wind speed prediction of towers in power transmission lines when typhoons come in the prior art Technical problems with large errors

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  • Risk monitoring method and system for transmission tower in typhoon
  • Risk monitoring method and system for transmission tower in typhoon
  • Risk monitoring method and system for transmission tower in typhoon

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Embodiment Construction

[0034] Explanation of terms:

[0035] National weather station: The national weather station generally refers to the national basic weather station. The national basic weather station is the main station of the national weather and climate station network. It is equipped with type II comprehensive wired telemetry equipment. Long-term continuity, and prepare monthly (yearly) reports. The location of this type of station is required to remain unchanged for a long time, and the distance between the two stations is generally about 150km. It also undertakes the tasks of weather report, important weather report and aviation hazard report. Surface meteorological observation is one of the basic tasks of each surface meteorological observation station. The basic tasks of surface meteorological observation work are observation, recording, processing, and compilation and distribution of weather reports. Climate stations, national basic meteorological stations and national general meteor...

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Abstract

The invention provides a method and system for monitoring the risk of a power transmission tower in typhoon. The method comprises steps of obtaining DEM data of an area where a power transmission line is located, and carrying out the mesh generation to obtain a CFD mesh; acquiring wind speed and wind direction data monitored by meteorological stations around the power transmission line, and performing CFD calculation by taking the monitored wind speed and wind direction data as an input condition to obtain a wind field of the power transmission line when a wind direction pointing to the power transmission line exists; extracting wind speed and wind direction data of the power transmission tower and the wire, judging whether the wind speed of the power transmission tower is greater than the designed wind speed, and if yes, sending an early warning signal; and if not, calculating the overall stress of the transmission tower and the wire according to the wind speed and direction data and the finite element model of the transmission line, and sending an early warning signal when the stress exceeds the limit stress. The method is advantaged in that CFD calculation is performed according to the actually measured wind speed and wind direction data of the meteorological stations around the power transmission line so that the accurate wind speed and wind direction data and the overall stress of the tower and the wire can be obtained, and early warning can be timely performed.

Description

technical field [0001] The invention relates to the technical field of power grid safety monitoring, in particular to a risk monitoring method and system for power transmission towers during typhoons. Background technique [0002] The transmission tower is an important part of the transmission line. It is mainly used to support the line or prevent the ground fault caused by the contact between the line and other conductors, so as to ensure the safe and reliable transportation of electric energy to various users in the transmission link. According to statistics, typhoon disasters are the main cause of damage to transmission line towers in coastal areas, causing huge losses to the power grid and seriously affecting social production and life. [0003] In the prior art, some typhoon paths and wind circle information from weather forecasts are used as the source of wind speed. The error of the weather forecast path and wind speed is large, and the error of the path can reach ten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/28G06F30/23G06F113/04G06F113/08G06F119/14
Inventor 罗啸宇聂铭谢文平刘小璐黄正
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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