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Method and system for measuring downburst wind field parameters near a power transmission line

A technology for transmission lines and wind farms, applied in the field of thunderstorm wind field measurement, can solve problems such as threatening the normal operation of transmission lines, and achieve the effect of improving the reliability of power supply

Pending Publication Date: 2020-11-27
CHONGQING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen from the above that the strong winds formed by thunderstorms and strong convective weather have seriously threatened the normal operation of transmission lines.

Method used

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  • Method and system for measuring downburst wind field parameters near a power transmission line
  • Method and system for measuring downburst wind field parameters near a power transmission line
  • Method and system for measuring downburst wind field parameters near a power transmission line

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Embodiment 1: as figure 1 As shown, a method for measuring downburst wind field parameters near the transmission line provided by the present invention includes:

[0046] S1 measures the wind speed and direction of the downburst passing through the observation point whose wind field parameters are to be determined;

[0047] S2 For each set of wind field parameters in multiple sets of wind field parameters, based on the set life cycle, use the pre-built downburst wind field model to simulate the wind speed and wind direction, and fit the simulated wind speed and wind direction with the measured wind speed and wind direction Get the goodness-of-fit results;

[0048] S3 Determine the wind field parameters corresponding to the best goodness-of-fit results from all groups as the wind field parameters of the downburst to be determined.

[0049] The technical solution provided by the invention obtains the wind field parameters when the downburst occurs by combining the measu...

Embodiment 2

[0097] Embodiment 2: Based on the same inventive concept, the present invention also provides a system for measuring downburst wind field parameters near transmission lines, including:

[0098] The measurement module is used to measure the wind speed and direction of the downburst passing through the observation point for the wind field parameters to be determined;

[0099] The calculation module is used for simulating wind speed and wind direction by using a pre-built downburst wind field model based on the set life cycle for each set of wind field parameters among multiple sets of wind field parameters, and combining the simulated wind speed and wind direction with the measured wind speed and The wind direction is fitted to obtain the goodness of fit result;

[0100] The determination module is configured to determine the wind field parameters corresponding to the best goodness-of-fit results from all groups as the wind field parameters of the downburst to be determined.

...

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Abstract

The invention discloses a method and a system for measuring downburst wind field parameters near a power transmission line. The method comprises the following steps: measuring the wind speed and the wind direction of a downburst of a to-be-determined wind field parameter passing through an observation point; for each group of wind field parameters in the multiple groups of wind field parameters, simulating a wind speed and a wind direction by utilizing a pre-constructed downburst wind field model based on a set downburst life cycle, and fitting the simulated wind speed and the wind direction with the measured wind speed and the measured wind direction to obtain a goodness-of-fit result; and determining the wind field parameter corresponding to the optimal goodness-of-fit result from all the groups as the wind field parameter of the downburst to be determined. The method provides data support for guiding the design work of windproof measures of the power transmission line, improving thepower supply reliability of the power transmission line and researching downburst.

Description

technical field [0001] The invention relates to the field of thunderstorm wind field measurement, in particular to a method and system for measuring downburst wind field parameters near transmission lines. Background technique [0002] Severe convective thunderstorms and strong winds are one of the main causes of wind-induced damage to transmission lines. For example: in 2005, a strong storm caused an accident on the 5237 line of the 500KV East China Power Grid, causing the 10-base transmission tower to collapse at one time; in 2007, a thunderstorm hit the Henan 500KV Zhengxiang line, causing serious damage to the 6-base tower; in 2009, strong winds and thunderstorms in southern Hebei 8 bases of the 500KV Xinpeng Line collapsed; in 2018, a sudden short-term extreme windy weather in Shunyi District, Beijing caused 2 bases of 110KV transmission towers to fall and so on. It can be seen from the above that the strong winds formed by thunderstorms and strong convective weather h...

Claims

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Application Information

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IPC IPC(8): G06F30/28
CPCG06F30/28
Inventor 汪之松方智远程永锋吴静
Owner CHONGQING UNIV
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