Simulation method and device of complex mountain land surface large wind

A large eddy simulation and pad surface technology, applied in measurement devices, meteorology, scientific instruments, etc., can solve the problems of inaccurate simulation results, inaccurate near-surface wind forecast results, and inability to achieve real-time simulation, and achieve reliable data acquisition. , to achieve the effect of accurate forecasting

Active Publication Date: 2017-11-24
YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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Problems solved by technology

[0006] The present invention provides a method and device for simulating high winds on complex mountain subterranean surfaces, to solve the problem that the existing simulation methods cannot realize real-time simulation, which makes the simulation results inaccurate, and thus leads to inaccurate forecast results of near-surface winds

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  • Simulation method and device of complex mountain land surface large wind
  • Simulation method and device of complex mountain land surface large wind
  • Simulation method and device of complex mountain land surface large wind

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Embodiment Construction

[0064] figure 1 This is a flow chart of a method for simulating strong wind on a complex mountain surface provided by an embodiment of the present invention.

[0065] See figure 1 , The present invention adopts the method of combining WRF simulation technology and large eddy simulation technology to realize accurate prediction of near-surface wind of complex terrain and landforms. The method for simulating strong wind on the underlay surface of a complex mountain provided by the embodiment of the present invention includes the following steps:

[0066] S101. Establish a high-resolution ground surface data set, and determine a lower boundary parameter according to the high-resolution ground surface data set;

[0067] In view of the fact that the near-surface wind is largely affected by complex topography and geomorphology, in order to predict the near-surface wind field more accurately, first, comprehensively use satellite remote sensing observation data combined with field investigat...

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Abstract

The invention discloses a simulation method and device of complex mountain land surface large wind, and a method of the combination of WRF model simulation and large eddy model simulation is used. Ground surface characteristic parameters of a complex land surface with temporal evolution are introduced into a middle size weather forecasting system WRF, further assimilation and correction are carried out with the combination of observation data, then the scale down processing is carried out, and a wind field of a high-precision spatial-temporal resolution is outputted. A large eddy simulation method is used, complex land surface data is inputted into a large eddy mode, the simulation is carried out with the high resolution wind field as an initial field, and a conceptual model is given. Output results of WRF model simulation and large eddy model simulation are compared, and a wind field fine prediction system is established. The invention provides the method and the device, the data acquisition is more reliable, the precise forecast of complex mountain landform surface layer wind can be realized. The method and the device provided by the invention are suitable for the simulation and statistical analysis of the complex surface middle and large scale land layer and the high layer wind under the influence of terrains.

Description

Technical field [0001] The invention relates to the technical field of wind simulation and statistical analysis, and in particular to a method and device for simulating strong wind on the underlying surface of a complex mountain. Background technique [0002] Wind damage is one of the main factors that cause failures in the operation of transmission lines, and wind protection has always been paid attention to by the power grid operation department. The primary prerequisite for the study of power grid wind damage is the accurate forecast of near-surface wind. However, the near-surface wind speed is affected by factors such as topography, surface conditions, vegetation coverage, turbulence in the near-surface atmosphere, and the entrainment process between the near-surface atmosphere and the mixed layer, residual layer, and stable boundary layer. Its wind speed has strong fluctuations. The time scale can be on the order of minutes or even seconds, and drastic changes in wind speed...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01W1/10
Inventor 申元马仪王科徐肖伟张其林潘浩杨明昆
Owner YUNNAN POWER GRID CO LTD ELECTRIC POWER RES INST
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