Wind speed valuing method and device for power transmission line design
A transmission line and wind speed technology, applied in design optimization/simulation, calculation, special data processing applications, etc., can solve the problems of small design wind speed, extreme value simulation is smaller than the actual value, insufficient wind resistance of transmission lines, etc. The effect of improving accuracy and ensuring safety
Pending Publication Date: 2021-04-09
STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD
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[0005] However, using the WRF model for meteorological numerical simulation has the problem that the extreme value simulation is smaller than the actual value. Directly using the meteorological numerical results to design the wind speed value will easily lead to too small design wind speed and insufficient wind resistance of the transmission line.
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[0053] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.
[0054] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those skilled in the art. Before further describing the implementation manner of the application in detail, some terms for understanding the embodiments of the application will be explained.
[0055] In order to make the technical solutions and advantages of the present application clearer, the implementation manne...
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The invention provides a wind speed valuing method and device for power transmission line design. The method comprises the following steps: obtaining short-term meteorological observation data; screening out a plurality of strong wind events from the long-term meteorological observation data according to the recurrence period wind speed of a reference meteorological station; assimilating the short-term observation data into the initial field data, and establishing a weather forecast model of the research area based on the collected data and the assimilated initial field data; simulating the screened-out strong wind events to obtain wind speed simulation results of a plurality of strong wind events; calculating the ratio of the maximum wind speed of each grid point of the research area to the preset height of the grid point corresponding to the temporary meteorological station in each strong wind event, and calculating the recurrence period wind speed of each grid point based on the ratio and the recurrence period wind speed of the temporary meteorological station, and performing section division and conversion on the to-be-built power transmission line to obtain a design wind speed value of a preset height of each section of the power transmission line. The method can effectively improve the accuracy of the design wind speed value of the power transmission line in the area with scarce data.
Description
technical field [0001] The application relates to the field of transmission line engineering design, in particular to a design wind speed value and device for transmission lines. Background technique [0002] For transmission line engineering, wind load is one of the loads that need to be considered. The higher the value of the design wind speed, the stronger the wind resistance of the project, and the higher the project cost. Therefore, it is of great significance to determine the design wind speed reasonably for the design of transmission lines. [0003] For areas with dense weather stations and rich data, the weather stations are better representative of the climate of the project location. By collecting the measured wind speed data of multiple weather stations, applying the probability statistics method to calculate the wind speed in different return periods of the weather stations, combined with terrain correction, a more accurate design wind speed of transmission lin...
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IPC IPC(8): G06F30/20G06Q50/06
CPCG06F30/20G06Q50/06
Inventor 李磊谷洪钦朱永楠李志龙于万春张梦飞晏正滨
Owner STATE NUCLEAR ELECTRIC POWER PLANNING DESIGN & RES INST CO LTD