Method for predicting near-ground wind field point domain mapping space along railway

Abstract

A method for predicting a near-ground wind field point domain mapping space along a railway comprises the following steps that S1 a three-dimensional model of a near-ground wind field is set up; S2 an installation position of a wind meter is determined, and under the restraint of the installation position of the wind meter, an arranging scheme of wind measuring points is determined with the least favorable wind acceleration factor and the largest turbulence intensity as targets; S3 a high wind speed numerical simulation model is set up, and a mapping relational expression of the wind speed at the wind measuring points and the wind speed of any one point in the three-dimensional model of the near-ground wind field is provided; S4 according to a predicted wind speed sequence and a mixed algorithm based on empirical mode decomposition and the self-adaptive neural-fuzzy reasoning, prediction of the wind speed along the railway to be predicted is achieved. The method for predicting the near-ground wind field point domain mapping space along the railway can monitor the wind speed of a point along the railway to predict continuous wind speed distribution of a domain, overcome the defect that a train is guided to run only according to real-time wind speeds before and behind the train in the prior art, and improve running safety coefficient of the train in a high wind environment.

Description

technical field [0001] The invention relates to the technical field of rail transit safety, in particular to a spatial prediction method for point domain mapping of near-earth wind field along a railway. Background technique [0002] my country has a vast territory, and western provinces such as Xinjiang and Tibet are rich in wind resources. This meteorological feature provides excellent natural conditions for the development of renewable energy such as wind power generation. However, severe wind is one of the main meteorological disasters leading to train accidents. The road network is interrupted at the slightest, and the car is destroyed or killed, which has a great social impact. . [0003] In order to ensure the safe operation of the train, it is necessary to establish wind field observation stations along the railway line to evaluate the wind speed conditions for the safe operation of the train. The windy section along the railway is hundreds of kilometers long, the ...

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Problems solved by technology

[0005] However, my country's railway dispatching department is still unable to obtain the predicted value of the railway space wind speed, and can only use the measured wind speed in front or behind the train running section as a dispatch early warning signal. It cannot reflect the wind speed at other locations in this section. Once there is a strong wind, the consequences will be disastrous

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