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Terrain modeling and grid generation method and device

A grid generation and terrain technology, applied in the field of power simulation, can solve the problems of slow node search and positioning speed, inability to restore terrain details more realistically, and large amount of calculations

Active Publication Date: 2018-03-23
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

[0004] The present invention provides a method and device for terrain modeling and grid generation, which are used to solve the problem of using point coordinates extracted from contour lines for terrain modeling and grid generation in the prior art, but the generated The grid is relatively sparse, and the terrain details cannot be restored more realistically. Moreover, if the number of extracted data points is increased, the node search and positioning speed will be slow, and the technical problems of large calculations

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  • Terrain modeling and grid generation method and device

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Embodiment Construction

[0045] The embodiment of the present invention provides a wind-induced vibration response simulation method and device for transmission tower lines, which solves the problem that the existing wind-induced vibration response simulation method does not consider multi-tower modeling, nor does it consider the rotation angle of transmission towers in space, and , the process of manual calculation of wind load is cumbersome, which leads to the technical problem that those skilled in the art need to provide a simulation method for wind-induced vibration response of transmission tower lines.

[0046] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all,...

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Abstract

The present invention discloses a terrain modeling and grid generation method and device. The method comprises the steps of: converting rule grid terrain elevation data to a form of X, Y and Z three-dimensional coordinates, performing triangular grid division, achieving consistence of a bottom-layer plane grid topological structure and generating multiple layers of triangular prism grids with suitable lengths of stretch. The technical problems are solved that a method for extraction of point coordinates from contour lines is employed to perform terrain modeling and grid generation, the generated grids are sparse and cannot realistically restore terrain details and if the number of extracted data points is added to caused slow speed of node searching and positioning and the computation amount is large in the prior art.

Description

technical field [0001] The invention relates to the field of electric power simulation, in particular to a terrain modeling and grid generation method and device. Background technique [0002] Real terrain has complex topography, high and low terrain, and a large terrain range. There are high requirements for the number of grid units, grid density, generation difficulty, and calculation accuracy that make up the 3D model. [0003] In the existing technology, the method of point coordinates extracted from the contour line is used for terrain modeling and grid generation, but the generated grid is relatively sparse, and the terrain details cannot be restored more realistically. Moreover, if the extracted The number of data points will lead to technical problems such as slow node search and positioning speed and large amount of calculation. Contents of the invention [0004] The present invention provides a method and device for terrain modeling and grid generation, which ar...

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Application Information

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IPC IPC(8): G06T17/05G06T17/20
CPCG06T17/05G06T17/20
Inventor 罗啸宇谢文平肖凯聂铭雷旭姚博刘震卿熊世树吴晓波
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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